diff --git a/l10n_us_hr_payroll/data/state/mi_michigan.xml b/l10n_us_hr_payroll/data/state/mi_michigan.xml
index df67c982..ca0b18ba 100644
--- a/l10n_us_hr_payroll/data/state/mi_michigan.xml
+++ b/l10n_us_hr_payroll/data/state/mi_michigan.xml
@@ -6,19 +6,11 @@
         <field name="code">us_mi_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mi_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">9000.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mi_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://taxnews.ey.com/news/2020-2141-michigan-sui-taxable-wage-base-expected-to-increase-for-2021-due-to-covid-19s-depletion-of-ui-trust-fund#:~:text=Michigan%20employers%20should%20expect%20to,be%20used%20by%20delinquent%20employers. -->
-        <record id="rule_parameter_us_mi_suta_wage_base_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">9500.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mi_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mi_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">9000.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mi_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
     <record id="rule_parameter_us_mi_suta_rate" model="hr.rule.parameter">
@@ -27,7 +19,6 @@
         <field name="country_id" ref="base.us"/>
     </record>
     <data noupdate="1">
-        <!-- same for 2021 https://www.michigan.gov/leo/0,5863,7-336-94422_97241_89981_90255-502287-  -,00.html -->
         <record id="rule_parameter_us_mi_suta_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">2.7</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_mi_suta_rate"/>
@@ -40,21 +31,11 @@
         <field name="code">us_mi_sit_exemption_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mi_sit_exemption_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">4750.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mi_sit_exemption_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://www.michigan.gov/documents/taxes/446_711611_7.pdf -->
-        <record id="rule_parameter_us_mi_sit_exemption_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">4900.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mi_sit_exemption_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
-
-    <!-- todo: income tax rate https://www.michigan.gov/taxes/0,4676,7-238-43519_43531-  -  -,00.html -->
+    <record id="rule_parameter_us_mi_sit_exemption_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">4750.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mi_sit_exemption_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_mi_dor" model="res.partner">
diff --git a/l10n_us_hr_payroll/data/state/mn_minnesota.xml b/l10n_us_hr_payroll/data/state/mn_minnesota.xml
index 997fcb46..8a5ab7ce 100644
--- a/l10n_us_hr_payroll/data/state/mn_minnesota.xml
+++ b/l10n_us_hr_payroll/data/state/mn_minnesota.xml
@@ -6,14 +6,11 @@
         <field name="code">us_mn_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mn_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">35000.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mn_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- todo: 2021 base when published -->
-    </data>
+    <record id="rule_parameter_us_mn_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">35000.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mn_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
     <record id="rule_parameter_us_mn_suta_rate" model="hr.rule.parameter">
@@ -27,7 +24,6 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_mn_suta_rate"/>
             <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
         </record>
-        <!-- todo: 2021 rates when published -->
     </data>
 
     <record id="rule_parameter_us_mn_sit_tax_rate" model="hr.rule.parameter">
@@ -35,68 +31,35 @@
         <field name="code">us_mn_sit_tax_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://www.revenue.state.mn.us/sites/default/files/2019-12/wh_inst_20_0.pdf -->
-        <!-- Chart for step 5 value -->
-        <record id="rule_parameter_us_mn_sit_tax_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'single': (
-                    ( 30760,   3800, 5.35,     0.00),
-                    ( 92350,  30760, 6.80,  1442.36),
-                    (168200,  92350, 7.85,  5630.48),
-                    ( 'inf', 168200, 9.85, 11584.71),
-                ),
-                'married': (
-                    (  51310,  11900,  5.35,      0.00),
-                    ( 168470,  51310,  6.80,   2108.44),
-                    ( 285370, 168470,  7.85,  10075.32),
-                    (  'inf', 285370,  9.85,  19251.97),
-                ),
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_tax_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- page 34 https://www.revenue.state.mn.us/sites/default/files/2021-01/wh_inst_21.pdf -->
-        <record id="rule_parameter_us_mn_sit_tax_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'single': (
-                    ( 31055,   3825, 5.35,     0.00),
-                    ( 93265,  31055, 6.80,  1418.82),
-                    (169865,  93265, 7.85,  5687.09),
-                    ( 'inf', 169865, 9.85, 11700.19),
-                ),
-                'married': (
-                    (  51810,  12000,  5.35,     0.00),
-                    ( 170140,  51810,  6.80,   2129.84),
-                    ( 288200, 170140,  7.85,  10176.28),
-                    (  'inf', 288200,  9.85,  19443.99),
-                ),
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_tax_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mn_sit_tax_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'single': (
+                ( 30760,   3800, 5.35,     0.00),
+                ( 92350,  30760, 6.80,  1442.36),
+                (168200,  92350, 7.85,  5630.48),
+                ( 'inf', 168200, 9.85, 11584.71),
+            ),
+            'married': (
+                (  51310,  11900,  5.35,      0.00),
+                ( 168470,  51310,  6.80,   2108.44),
+                ( 285370, 168470,  7.85,  10075.32),
+                (  'inf', 285370,  9.85,  19251.97),
+            ),
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_tax_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <record id="rule_parameter_us_mn_sit_allowances_rate" model="hr.rule.parameter">
         <field name="name">US MN Minnesota Allowances Rate</field>
         <field name="code">us_mn_sit_allowances_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://www.revenue.state.mn.us/sites/default/files/2019-12/wh_inst_20_0.pdf -->
-        <!-- Step 3. -->
-        <record id="rule_parameter_us_mn_sit_allowances_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">4300.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_allowances_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- page 34 step 3 https://www.revenue.state.mn.us/sites/default/files/2021-01/wh_inst_21.pdf -->
-        <record id="rule_parameter_us_mn_sit_allowances_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">4350.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_allowances_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mn_sit_allowances_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">4300.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mn_sit_allowances_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_mn_dor" model="res.partner">
diff --git a/l10n_us_hr_payroll/data/state/mo_missouri.xml b/l10n_us_hr_payroll/data/state/mo_missouri.xml
index cea9bb6c..7319dc3b 100644
--- a/l10n_us_hr_payroll/data/state/mo_missouri.xml
+++ b/l10n_us_hr_payroll/data/state/mo_missouri.xml
@@ -6,19 +6,11 @@
         <field name="code">us_mo_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mo_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">11500.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://labor.mo.gov/news/press-releases/missouri-employers-receive-unemployment-tax-rate-reduction-2021#:~:text=Jefferson%20City%2C%20MO%20%E2%80%93%20Effective%20January,as%20of%20January%201%2C%202021. -->
-        <record id="rule_parameter_us_mo_suta_wage_base_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">11000.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mo_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">11500.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mo_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
     <record id="rule_parameter_us_mo_suta_rate" model="hr.rule.parameter">
@@ -32,13 +24,6 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_mo_suta_rate"/>
             <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
         </record>
-        <!-- https://labor.mo.gov/DES/Employers/tax_rates -->
-        <!-- In "Beginning Tax Rates" section, the last sentence says "or 2.7%, whichever is highest -->
-        <record id="rule_parameter_us_mo_suta_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">2.7</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_suta_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
     </data>
 
     <record id="rule_parameter_us_mo_sit_rate" model="hr.rule.parameter">
@@ -46,73 +31,36 @@
         <field name="code">us_mo_sit_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://dor.mo.gov/forms/4282_2020.pdf -->
-        <!-- Income Tax Withholding Percentage Table-->
-        <record id="rule_parameter_us_mo_sit_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">[
-                (1073.0, 1.5),
-                (1073.0, 2.0),
-                (1073.0, 2.5),
-                (1073.0, 3.0),
-                (1073.0, 3.5),
-                (1073.0, 4.0),
-                (1073.0, 4.5),
-                (1073.0, 5.0),
-                ( 'inf', 5.4),
-            ]</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-
-        <!-- todo: This parameter is to the example not to the rates-->
-        <!-- page 13 https://dor.mo.gov/forms/4282_2021.pdf -->
-        <record id="rule_parameter_us_mo_sit_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">[
-                (1088.0, 1.5),
-                (1088.0, 2.0),
-                (1088.0, 2.5),
-                (1088.0, 3.0),
-                (1088.0, 3.5),
-                (1088.0, 4.0),
-                (1088.0, 4.5),
-                (1088.0, 5.0),
-                ( 'inf', 5.4),
-            ]</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mo_sit_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">[
+            (1073.0, 1.5),
+            (1073.0, 2.0),
+            (1073.0, 2.5),
+            (1073.0, 3.0),
+            (1073.0, 3.5),
+            (1073.0, 4.0),
+            (1073.0, 4.5),
+            (1073.0, 5.0),
+            ( 'inf', 5.4),
+        ]</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <record id="rule_parameter_us_mo_sit_deduction" model="hr.rule.parameter">
         <field name="name">US MO Missouri SIT Deduction</field>
         <field name="code">us_mo_sit_deduction</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://dor.mo.gov/forms/4282_2020.pdf -->
-        <!-- 2020 Missouri Withholding Tax Formula Page.12 -->
-        <record id="rule_parameter_us_mo_sit_deduction_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'single':             12400.0,
-                'married':            24800.0,
-                'head_of_household':  18650.0,
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_deduction"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://dor.mo.gov/forms/4282_2021.pdf -->
-        <!-- 2020 Missouri Withholding Tax Formula Page.12 -->
-        <record id="rule_parameter_us_mo_sit_deduction_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'single':             12550.0,
-                'married':            25100.0,
-                'head_of_household':  18800.0,
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_deduction"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mo_sit_deduction_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'single':             12400.0,
+            'married':            24800.0,
+            'head_of_household':  18650.0,
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mo_sit_deduction"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_mo_dor" model="res.partner">
diff --git a/l10n_us_hr_payroll/data/state/ms_mississippi.xml b/l10n_us_hr_payroll/data/state/ms_mississippi.xml
index 4c6566b7..f63fab4d 100644
--- a/l10n_us_hr_payroll/data/state/ms_mississippi.xml
+++ b/l10n_us_hr_payroll/data/state/ms_mississippi.xml
@@ -6,14 +6,11 @@
         <field name="code">us_ms_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- not changed for 2021 https://mdes.ms.gov/employer-faqs/ -->
-        <record id="rule_parameter_us_ms_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">14000.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_ms_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_ms_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">14000.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_ms_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
     <record id="rule_parameter_us_ms_suta_rate" model="hr.rule.parameter">
@@ -27,13 +24,6 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_ms_suta_rate"/>
             <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
         </record>
-        <!-- 1% for first year of new employers -->
-        <!-- https://mdes.ms.gov/employers/unemployment-tax/reporting-and-filing/unemployment-tax-rates/ -->
-        <record id="rule_parameter_us_ms_suta_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">1.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_ms_suta_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
     </data>
 
     <record id="rule_parameter_us_ms_sit_rate" model="hr.rule.parameter">
@@ -41,51 +31,31 @@
         <field name="code">us_ms_sit_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://www.dor.ms.gov/Documents/Computer%20Payroll%20Flowchart.pdf -->
-        <!-- Table D. -->
-        <record id="rule_parameter_us_ms_sit_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">[
-                    (  10000.00,  260.0,  0.05),
-                    (   5000.00,   60.0,  0.04),
-                    (   3000.00,    0.0,  0.03),
-                ]</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_ms_sit_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://www.dor.ms.gov/Documents/Computer%20Payroll%20Flowchart%209-9-20.pdf -->
-        <!-- Table D. -->
-        <record id="rule_parameter_us_ms_sit_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">[
-                    (  10000.00,  230.0,  0.05),
-                    (   5000.00,   30.0,  0.04),
-                    (   3000.00,    0.0,  0.03),
-                ]</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_ms_sit_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_ms_sit_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">[
+                (  10000.00,  260.0,  0.05),
+                (   5000.00,   60.0,  0.04),
+                (   3000.00,    0.0,  0.03),
+            ]</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_ms_sit_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <record id="rule_parameter_us_ms_sit_deduction" model="hr.rule.parameter">
         <field name="name">US MS Mississippi SIT Deduction</field>
         <field name="code">us_ms_sit_deduction</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://www.dor.ms.gov/Documents/Computer%20Payroll%20Flowchart.pdf -->
-        <!-- Table C. -->
-        <!-- Unchanged in 2021 https://www.dor.ms.gov/Documents/Computer%20Payroll%20Flowchart%209-9-20.pdf -->
-        <record id="rule_parameter_us_ms_sit_deduction_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'single':             2300.0,
-                'head_of_household':  3400.0,
-                'married_dual':       2300.0,
-                'married':            4600.0,
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_ms_sit_deduction"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_ms_sit_deduction_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'single':             2300.0,
+            'head_of_household':  3400.0,
+            'married_dual':       2300.0,
+            'married':            4600.0,
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_ms_sit_deduction"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_ms_dor" model="res.partner">
diff --git a/l10n_us_hr_payroll/data/state/mt_montana.xml b/l10n_us_hr_payroll/data/state/mt_montana.xml
index 7df6da1c..2660c407 100644
--- a/l10n_us_hr_payroll/data/state/mt_montana.xml
+++ b/l10n_us_hr_payroll/data/state/mt_montana.xml
@@ -1,24 +1,16 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <odoo>
     <!-- Wage Base -->
-    <!--2021 change: http://dli.mt.gov/news/225#:~:text=The%20Montana%20Department%20of%20Labor,MCA%2039%2D51%2D1108. -->
     <record id="rule_parameter_us_mt_suta_wage_base" model="hr.rule.parameter">
         <field name="name">US MT Montana SUTA Wage Base</field>
         <field name="code">us_mt_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mt_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">34100.00</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <record id="rule_parameter_us_mt_suta_wage_base_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">35300.00</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mt_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">34100.00</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
     <record id="rule_parameter_us_mt_suta_rate" model="hr.rule.parameter">
@@ -39,132 +31,70 @@
         <field name="code">us_mt_suta_aft_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mt_suta_aft_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">0.13</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_aft_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
-        <record id="rule_parameter_us_mt_suta_aft_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">0.13</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_aft_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mt_suta_aft_rate_2019" model="hr.rule.parameter.value">
+        <field name="parameter_value">0.13</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mt_suta_aft_rate"/>
+        <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
+    </record>
 
     <record id="rule_parameter_us_mt_sit_rate" model="hr.rule.parameter">
         <field name="name">US MT Montana SIT Rate Table</field>
         <field name="code">us_mt_sit_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mt_sit_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly': (
-                    (    135.00,       0.0,  1.80),
-                    (    288.00,       2.0,  4.40),
-                    (   2308.00,       9.0,  6.00),
-                    (     'inf',     130.0,  6.60),
-                ),
-                'bi-weekly': (
-                    (    269.00,       0.0,  1.80),
-                    (    577.00,       5.0,  4.40),
-                    (   4615.00,      18.0,  6.00),
-                    (     'inf',     261.0,  6.60),
-                ),
-                'semi-monthly': (
-                    (    292.00,       0.0,  1.80),
-                    (    625.00,       5.0,  4.40),
-                    (   5000.00,      20.0,  6.00),
-                    (     'inf',     282.0,  6.60),
-                ),
-                'monthly': (
-                    (    583.00,       0.0,  1.80),
-                    (   1250.00,      11.0,  4.40),
-                    (  10000.00,      40.0,  6.00),
-                    (     'inf',     565.0,  6.60),
-                ),
-                'annually': (
-                    (   7000.00,       0.0,  1.80),
-                    (  15000.00,     126.0,  4.40),
-                    ( 120000.00,     478.0,  6.00),
-                    (     'inf',    6778.0,  6.60),
-                ),
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
-        <!-- https://app.mt.gov/myrevenue/Endpoint/DownloadPdf?yearId=705 -->
-        <!-- Table Montana Withholding Tax Formula for Computerized Payroll Systems -->
-        <record id="rule_parameter_us_mt_sit_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly': (
-                    (    135.00,       0.0,  1.80),
-                    (    288.00,       2.0,  4.40),
-                    (   2308.00,       9.0,  6.00),
-                    (     'inf',     130.0,  6.60),
-                ),
-                'bi-weekly': (
-                    (    269.00,       0.0,  1.80),
-                    (    577.00,       5.0,  4.40),
-                    (   4615.00,      18.0,  6.00),
-                    (     'inf',     261.0,  6.60),
-                ),
-                'semi-monthly': (
-                    (    292.00,       0.0,  1.80),
-                    (    625.00,       5.0,  4.40),
-                    (   5000.00,      20.0,  6.00),
-                    (     'inf',     282.0,  6.60),
-                ),
-                'monthly': (
-                    (    583.00,       0.0,  1.80),
-                    (   1250.00,      11.0,  4.40),
-                    (  10000.00,      40.0,  6.00),
-                    (     'inf',     565.0,  6.60),
-                ),
-                'annually': (
-                    (   7000.00,       0.0,  1.80),
-                    (  15000.00,     126.0,  4.40),
-                    ( 120000.00,     478.0,  6.00),
-                    (     'inf',    6778.0,  6.60),
-                ),
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mt_sit_rate_2019" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'weekly': (
+                (    135.00,       0.0,  1.80),
+                (    288.00,       2.0,  4.40),
+                (   2308.00,       9.0,  6.00),
+                (     'inf',     130.0,  6.60),
+            ),
+            'bi-weekly': (
+                (    269.00,       0.0,  1.80),
+                (    577.00,       5.0,  4.40),
+                (   4615.00,      18.0,  6.00),
+                (     'inf',     261.0,  6.60),
+            ),
+            'semi-monthly': (
+                (    292.00,       0.0,  1.80),
+                (    625.00,       5.0,  4.40),
+                (   5000.00,      20.0,  6.00),
+                (     'inf',     282.0,  6.60),
+            ),
+            'monthly': (
+                (    583.00,       0.0,  1.80),
+                (   1250.00,      11.0,  4.40),
+                (  10000.00,      40.0,  6.00),
+                (     'inf',     565.0,  6.60),
+            ),
+            'annually': (
+                (   7000.00,       0.0,  1.80),
+                (  15000.00,     126.0,  4.40),
+                ( 120000.00,     478.0,  6.00),
+                (     'inf',    6778.0,  6.60),
+            ),
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_rate"/>
+        <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
+    </record>
 
     <record id="rule_parameter_us_mt_sit_exemption_rate" model="hr.rule.parameter">
         <field name="name">US MT Montana SIT Exemption Rate Table</field>
         <field name="code">us_mt_sit_exemption_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_mt_sit_exemption_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly':         37.0,
-                'bi-weekly':      73.0,
-                'semi-monthly':   79.0,
-                'monthly':       158.0,
-                'annually':     1900.0,
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_exemption_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
-        <!-- https://app.mt.gov/myrevenue/Endpoint/DownloadPdf?yearId=705 -->
-        <!-- Table Montana Withholding Tax Formula for Computerized Payroll Systems -->
-        <record id="rule_parameter_us_mt_sit_exemption_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly':         37.0,
-                'bi-weekly':      73.0,
-                'semi-monthly':   79.0,
-                'monthly':       158.0,
-                'annually':     1900.0,
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_exemption_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_mt_sit_exemption_rate_2019" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'weekly':         37.0,
+            'bi-weekly':      73.0,
+            'semi-monthly':   79.0,
+            'monthly':       158.0,
+            'annually':     1900.0,
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_mt_sit_exemption_rate"/>
+        <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_mt_dor" model="res.partner">
diff --git a/l10n_us_hr_payroll/data/state/nc_northcarolina.xml b/l10n_us_hr_payroll/data/state/nc_northcarolina.xml
index 5134c4d0..7866f45d 100644
--- a/l10n_us_hr_payroll/data/state/nc_northcarolina.xml
+++ b/l10n_us_hr_payroll/data/state/nc_northcarolina.xml
@@ -1,27 +1,18 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <odoo>
     <!-- Wage Base -->
-<!--    https://des.nc.gov/employers/tax-rate-information-->
     <record id="rule_parameter_us_nc_suta_wage_base" model="hr.rule.parameter">
         <field name="name">US NC North Carolina SUTA Wage Base</field>
         <field name="code">us_nc_suta_wage_base</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <record id="rule_parameter_us_nc_suta_wage_base_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">25200.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_nc_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <record id="rule_parameter_us_nc_suta_wage_base_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">26000.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_nc_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_nc_suta_wage_base_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">25200.0</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_nc_suta_wage_base"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Rate -->
-<!--    https://des.nc.gov/employers/tax-rate-information-->
     <record id="rule_parameter_us_nc_suta_rate" model="hr.rule.parameter">
         <field name="name">US NC North Carolina SUTA Rate</field>
         <field name="code">us_nc_suta_rate</field>
@@ -33,11 +24,6 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_nc_suta_rate"/>
             <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
         </record>
-        <record id="rule_parameter_us_nc_suta_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">1.0</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_nc_suta_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
     </data>
 
     <record id="rule_parameter_us_nc_sit_allowance_rate" model="hr.rule.parameter">
@@ -45,34 +31,16 @@
         <field name="code">us_nc_sit_allowance_rate</field>
         <field name="country_id" ref="base.us"/>
     </record>
-    <data noupdate="1">
-        <!-- https://files.nc.gov/ncdor/documents/files/2020-NC-30_Final.pdf -->
-        <!-- Allowance Table  Page 19. + SD For single or married + SD for Head of household (SD Page. 16-18)-->
-        <record id="rule_parameter_us_nc_sit_allowance_rate_2020" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly':        {'allowance':  48.08, 'standard_deduction': 206.73, 'standard_deduction_hh':  310.10},
-                'bi-weekly':     {'allowance':  96.15, 'standard_deduction': 413.46, 'standard_deduction_hh':  620.19},
-                'semi-monthly':  {'allowance': 104.17, 'standard_deduction': 447.92, 'standard_deduction_hh':  671.88},
-                'monthly':       {'allowance': 208.33, 'standard_deduction': 895.83, 'standard_deduction_hh': 1343.75},
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_nc_sit_allowance_rate"/>
-            <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
-        </record>
-        <!-- https://files.nc.gov/ncdor/documents/files/2021-NC-30-Final.pdf -->
-        <!-- 'allowance': Get from Withholding Allowance Chart  Page 19. -->
-        <!-- 'standard_deduction': Get from 'Percentage Method - Formula Tables' line 2 SD For single or married (Page. 16-18)-->
-        <!-- 'standard_deduction_hh': Also get from 'Percentage Method - Formula Tables' line 2 (SD Page. 16-18)-->
-        <record id="rule_parameter_us_nc_sit_allowance_rate_2021" model="hr.rule.parameter.value">
-            <field name="parameter_value">{
-                'weekly':        {'allowance':  48.08, 'standard_deduction': 206.73, 'standard_deduction_hh':  310.10},
-                'bi-weekly':     {'allowance':  96.15, 'standard_deduction': 413.46, 'standard_deduction_hh':  620.19},
-                'semi-monthly':  {'allowance': 104.17, 'standard_deduction': 447.92, 'standard_deduction_hh':  671.88},
-                'monthly':       {'allowance': 208.33, 'standard_deduction': 895.83, 'standard_deduction_hh': 1343.75},
-            }</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_nc_sit_allowance_rate"/>
-            <field name="date_from" eval="datetime(2021, 1, 1).date()"/>
-        </record>
-    </data>
+    <record id="rule_parameter_us_nc_sit_allowance_rate_2020" model="hr.rule.parameter.value">
+        <field name="parameter_value">{
+            'weekly':        {'allowance':  48.08, 'standard_deduction': 206.73, 'standard_deduction_hh':  310.10},
+            'bi-weekly':     {'allowance':  96.15, 'standard_deduction': 413.46, 'standard_deduction_hh':  620.19},
+            'semi-monthly':  {'allowance': 104.17, 'standard_deduction': 447.92, 'standard_deduction_hh':  671.88},
+            'monthly':       {'allowance': 208.33, 'standard_deduction': 895.83, 'standard_deduction_hh': 1343.75},
+        }</field>
+        <field name="rule_parameter_id" ref="rule_parameter_us_nc_sit_allowance_rate"/>
+        <field name="date_from" eval="datetime(2020, 1, 1).date()"/>
+    </record>
 
     <!-- Partners and Contribution Registers -->
     <record id="res_partner_us_nc_dor" model="res.partner">