diff --git a/l10n_us_hr_payroll/data/state/id_idaho.xml b/l10n_us_hr_payroll/data/state/id_idaho.xml
index ef908d13..46dcce9d 100644
--- a/l10n_us_hr_payroll/data/state/id_idaho.xml
+++ b/l10n_us_hr_payroll/data/state/id_idaho.xml
@@ -47,52 +47,324 @@
         <record id="rule_parameter_us_id_sit_tax_rate_2019" model="hr.rule.parameter.value">
             <field name="parameter_value">{
                 'single': {
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-                    'annually': ((12200, 0.00, 0.00), (13741, 0.00, 1.125), (15281, 17.00, 3.125), (16822, 65.00, 3.625), (18362, 121.00, 4.625), (19903, 192.00, 5.625), (23754, 279.00, 6.625), ('inf', 534.00, 6.925)),
+                    'weekly': (
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+                        ( 1659, 16.00, 5.625),
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+                        (19903, 192.00, 5.625),
+                        (23754, 279.00, 6.625),
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                 'married': {
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-                    'semi-monthly': ((1017, 0.00, 0.00), (1145, 0.00, 1.125), (1273, 1.00, 3.125), (1402, 5.00, 3.625), (1530, 10.00, 4.625), (1659, 16.00, 5.625), (1980, 23.00, 6.625), ('inf', 45.00, 6.925)),
-                    'monthly': ((2033, 0.00, 0.00), (2290, 0.00, 1.125), (2547, 3.00, 3.125), (2804, 11.00, 3.625), (3060, 20.00, 4.625), (3317, 32.00, 5.625), (3959, 47.00, 6.625), ('inf', 89.00, 6.925)),
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+                        (  529,  0.00, 1.125),
+                        (  588,  0.00, 3.125),
+                        (  647,  1.00, 3.625),
+                        (  706,  2.00, 4.625),
+                        (  766,  4.00, 5.625),
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+                        ( 1531, 15.00, 5.625),
+                        ( 1827, 21.00, 6.625),
+                        ('inf', 41.00, 6.925),
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+                    'semi-monthly': (
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+                        ( 1530, 10.00, 4.625),
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+                        ('inf', 45.00, 6.925),
+                    ),
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+                        ( 2033,  0.00, 0.000),
+                        ( 2290,  0.00, 1.125),
+                        ( 2547,  3.00, 3.125),
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+                        ( 3060, 20.00, 4.625),
+                        ( 3317, 32.00, 5.625),
+                        ( 3959, 47.00, 6.625),
+                        ('inf', 89.00, 6.925),
+                    ),
+                    'annually': (
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+                        (39806,  385.00, 5.625),
+                        (47508,  558.00, 6.625),
+                        ('inf', 1068.00, 6.925),
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                 },
                 'head of household': {
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-                    'annually': ((12200, 0.00, 0.00), (13741, 0.00, 1.125), (15281, 17.00, 3.125), (16822, 65.00, 3.625), (18362, 121.00, 4.625), (19903, 192.00, 5.625), (23754, 279.00, 6.625), ('inf', 534.00, 6.925)),
+                    'weekly': (
+                        (  235,  0.00, 0.000),
+                        (  264,  0.00, 1.125),
+                        (  294,  0.00, 3.125),
+                        (  324,  1.00, 3.625),
+                        (  353,  2.00, 4.625),
+                        (  383,  4.00, 5.625),
+                        (  457,  5.00, 6.625),
+                        ('inf', 10.00, 6.925),
+                    ),
+                    'bi-weekly': (
+                        (  469,  0.00, 0.000),
+                        (  529,  0.00, 1.125),
+                        (  588,  1.00, 3.125),
+                        (  647,  3.00, 3.625),
+                        (  706,  5.00, 4.625),
+                        (  766,  7.00, 5.625),
+                        (  914, 11.00, 6.625),
+                        ('inf', 21.00, 6.925),
+                    ),
+                    'semi-monthly': (
+                        (  508,  0.00, 0.000),
+                        (  573,  0.00, 1.125),
+                        (  637,  1.00, 3.125),
+                        (  701,  3.00, 3.625),
+                        (  765,  5.00, 4.625),
+                        (  829,  8.00, 5.625),
+                        (  990, 12.00, 6.625),
+                        ('inf', 22.00, 6.925),
+                    ),
+                    'monthly': (
+                        ( 1017,  0.00, 0.000),
+                        ( 1145,  0.00, 1.125),
+                        ( 1273,  1.00, 3.125),
+                        ( 1402,  5.00, 3.625),
+                        ( 1530, 10.00, 4.625),
+                        ( 1659, 16.00, 5.625),
+                        ( 1980, 23.00, 6.625),
+                        ('inf', 45.00, 6.925),
+                    ),
+                    'annually': (
+                        (12200,   0.00, 0.000),
+                        (13741,   0.00, 1.125),
+                        (15281,  17.00, 3.125),
+                        (16822,  65.00, 3.625),
+                        (18362, 121.00, 4.625),
+                        (19903, 192.00, 5.625),
+                        (23754, 279.00, 6.625),
+                        ('inf', 534.00, 6.925),
+                    ),
                 },
             }</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_id_sit_tax_rate"/>
             <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
         </record>
+        <!-- https://tax.idaho.gov/pubs/EPB00744_06-16-2020.pdf -->
+        <!-- Page 1 to 3 -->
         <record id="rule_parameter_us_id_sit_tax_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">{
                 'single': {
-                    'weekly': ((235, 0.00, 0.00), (264, 0.00, 1.125), (294, 0.00, 3.125), (324, 1.00, 3.625), (353, 2.00, 4.625), (383, 4.00, 5.625), (457, 5.00, 6.625), ('inf', 10.00, 6.925)),
-                    'bi-weekly': ((469, 0.00, 0.00), (529, 0.00, 1.125), (588, 1.00, 3.125), (647, 3.00, 3.625), (706, 5.00, 4.625), (766, 7.00, 5.625), (914, 11.00, 6.625), ('inf', 21.00, 6.925)),
-                    'semi-monthly': ((508, 0.00, 0.00), (573, 0.00, 1.125), (637, 1.00, 3.125), (701, 3.00, 3.625), (765, 5.00, 4.625), (829, 8.00, 5.625), (990, 12.00, 6.625), ('inf', 22.00, 6.925)),
-                    'monthly': ((1017, 0.00, 0.00), (1145, 0.00, 1.125), (1273, 1.00, 3.125), (1402, 5.00, 3.625), (1530, 10.00, 4.625), (1659, 16.00, 5.625), (1980, 23.00, 6.625), ('inf', 45.00, 6.925)),
-                    'annually': ((12200, 0.00, 0.00), (13741, 0.00, 1.125), (15281, 17.00, 3.125), (16822, 65.00, 3.625), (18362, 121.00, 4.625), (19903, 192.00, 5.625), (23754, 279.00, 6.625), ('inf', 534.00, 6.925)),
+                    'weekly': (
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+                        (  329,  1.00, 3.625),
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+                    'bi-weekly': (
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+                        (  598,  1.00, 3.125),
+                        (  658,  3.00, 3.625),
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+                        (  778,  8.00, 5.625),
+                        (  929, 11.00, 6.625),
+                        ('inf', 21.00, 6.925),
+                    ),
+                    'semi-monthly': (
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+                        (  582,  0.00, 1.125),
+                        (  647,  1.00, 3.125),
+                        (  713,  3.00, 3.625),
+                        (  778,  5.00, 4.625),
+                        (  843,  8.00, 5.625),
+                        ( 1007, 12.00, 6.625),
+                        ('inf', 23.00, 6.925),
+                    ),
+                    'monthly': (
+                        ( 1033,  0.00, 0.000),
+                        ( 1164,  0.00, 1.125),
+                        ( 1295,  1.00, 3.125),
+                        ( 1425,  6.00, 3.625),
+                        ( 1556, 10.00, 4.625),
+                        ( 1687, 16.00, 5.625),
+                        ( 2013, 24.00, 6.625),
+                        ('inf', 45.00, 6.925),
+                    ),
+                    'annually': (
+                        (12400,   0.00, 0.000),
+                        (13968,   0.00, 1.125),
+                        (15536,  18.00, 3.125),
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+                        (18672, 124.00, 4.625),
+                        (20240, 197.00, 5.625),
+                        (24160, 285.00, 6.625),
+                        ('inf', 545.00, 6.925),
+                    ),
                 },
                 'married': {
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-                    'bi-weekly': ((938, 0.00, 0.00), (1057, 0.00, 1.125), (1175, 1.00, 3.125), (1294, 5.00, 3.625), (1412, 9.00, 4.625), (1531, 15.00, 5.625), (1827, 21.00, 6.625), ('inf', 41.00, 6.925)),
-                    'semi-monthly': ((1017, 0.00, 0.00), (1145, 0.00, 1.125), (1273, 1.00, 3.125), (1402, 5.00, 3.625), (1530, 10.00, 4.625), (1659, 16.00, 5.625), (1980, 23.00, 6.625), ('inf', 45.00, 6.925)),
-                    'monthly': ((2033, 0.00, 0.00), (2290, 0.00, 1.125), (2547, 3.00, 3.125), (2804, 11.00, 3.625), (3060, 20.00, 4.625), (3317, 32.00, 5.625), (3959, 47.00, 6.625), ('inf', 89.00, 6.925)),
-                    'annually': ((24400, 0.00, 0.00), (27482, 0.00, 1.125), (30562, 35.00, 3.125), (33644, 131.00, 3.625), (36724, 243.00, 4.625), (39806, 385.00, 5.625), (47508, 558.00, 6.625), ('inf', 1068.00, 6.925)),
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+                        (  598,  0.00, 3.125),
+                        (  658,  1.00, 3.625),
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+                        (  778,  5.00, 5.625),
+                        (  929, 11.00, 6.625),
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+                        ( 1557, 15.00, 5.625),
+                        ( 1858, 22.00, 6.625),
+                        ('inf', 42.00, 6.925),
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+                    'semi-monthly': (
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+                        ( 1164,  0.00, 1.125),
+                        ( 1295,  1.00, 3.125),
+                        ( 1425,  6.00, 3.625),
+                        ( 1556, 10.00, 4.625),
+                        ( 1687, 16.00, 5.625),
+                        ( 2013, 24.00, 6.625),
+                        ('inf', 45.00, 6.925),
+                    ),
+                    'monthly': (
+                        ( 2067,  0.00, 0.000),
+                        ( 2328,  0.00, 1.125),
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+                        ( 3112, 21.00, 4.625),
+                        ( 3373, 33.00, 5.625),
+                        ( 4027, 47.00, 6.625),
+                        ('inf', 91.00, 6.925),
+                    ),
+                    'annually': (
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+                        (27482,    0.00, 1.125),
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+                        (39806,  385.00, 5.625),
+                        (47508,  558.00, 6.625),
+                        ('inf', 1068.00, 6.925),
+                    ),
                 },
                 'head of household': {
-                    'weekly': ((235, 0.00, 0.00), (264, 0.00, 1.125), (294, 0.00, 3.125), (324, 1.00, 3.625), (353, 2.00, 4.625), (383, 4.00, 5.625), (457, 5.00, 6.625), ('inf', 10.00, 6.925)),
-                    'bi-weekly': ((469, 0.00, 0.00), (529, 0.00, 1.125), (588, 1.00, 3.125), (647, 3.00, 3.625), (706, 5.00, 4.625), (766, 7.00, 5.625), (914, 11.00, 6.625), ('inf', 21.00, 6.925)),
-                    'semi-monthly': ((508, 0.00, 0.00), (573, 0.00, 1.125), (637, 1.00, 3.125), (701, 3.00, 3.625), (765, 5.00, 4.625), (829, 8.00, 5.625), (990, 12.00, 6.625), ('inf', 22.00, 6.925)),
-                    'monthly': ((1017, 0.00, 0.00), (1145, 0.00, 1.125), (1273, 1.00, 3.125), (1402, 5.00, 3.625), (1530, 10.00, 4.625), (1659, 16.00, 5.625), (1980, 23.00, 6.625), ('inf', 45.00, 6.925)),
-                    'annually': ((12200, 0.00, 0.00), (13741, 0.00, 1.125), (15281, 17.00, 3.125), (16822, 65.00, 3.625), (18362, 121.00, 4.625), (19903, 192.00, 5.625), (23754, 279.00, 6.625), ('inf', 534.00, 6.925)),
+                    'weekly': (
+                        (  238,  0.00, 0.000),
+                        (  269,  0.00, 1.125),
+                        (  299,  0.00, 3.125),
+                        (  329,  1.00, 3.625),
+                        (  359,  2.00, 4.625),
+                        (  389,  4.00, 5.625),
+                        (  465,  5.00, 6.625),
+                        ('inf', 10.00, 6.925),
+                    ),
+                    'bi-weekly': (
+                        (  477,  0.00, 0.000),
+                        (  537,  0.00, 1.125),
+                        (  598,  1.00, 3.125),
+                        (  658,  3.00, 3.625),
+                        (  718,  5.00, 4.625),
+                        (  778,  8.00, 5.625),
+                        (  929, 11.00, 6.625),
+                        ('inf', 21.00, 6.925),
+                    ),
+                    'semi-monthly': (
+                        (  517,  0.00, 0.000),
+                        (  582,  0.00, 1.125),
+                        (  647,  1.00, 3.125),
+                        (  713,  3.00, 3.625),
+                        (  778,  5.00, 4.625),
+                        (  843,  8.00, 5.625),
+                        ( 1007, 12.00, 6.625),
+                        ('inf', 23.00, 6.925),
+                    ),
+                    'monthly': (
+                        ( 1033,  0.00, 0.000),
+                        ( 1164,  0.00, 1.125),
+                        ( 1295,  1.00, 3.125),
+                        ( 1425,  6.00, 3.625),
+                        ( 1556, 10.00, 4.625),
+                        ( 1687, 16.00, 5.625),
+                        ( 2013, 24.00, 6.625),
+                        ('inf', 45.00, 6.925),
+                    ),
+                    'annually': (
+                        (12400,   0.00, 0.000),
+                        (13968,   0.00, 1.125),
+                        (15536,  18.00, 3.125),
+                        (17104,  67.00, 3.625),
+                        (18672, 124.00, 4.625),
+                        (20240, 197.00, 5.625),
+                        (24160, 285.00, 6.625),
+                        ('inf', 545.00, 6.925),
+                    ),
                 },
             }</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_id_sit_tax_rate"/>
@@ -117,6 +389,8 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_id_sit_ictcat_rate"/>
             <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
         </record>
+        <!-- https://tax.idaho.gov/i-1026.cfm?seg=compute -->
+        <!-- Idaho Child Tax Credit Allowances Table -->
         <record id="rule_parameter_us_id_sit_ictcat_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">{
                 'weekly':        56.92,
diff --git a/l10n_us_hr_payroll/tests/test_us_id_idaho_payslip_2020.py b/l10n_us_hr_payroll/tests/test_us_id_idaho_payslip_2020.py
index bf687080..eb0da9a7 100755
--- a/l10n_us_hr_payroll/tests/test_us_id_idaho_payslip_2020.py
+++ b/l10n_us_hr_payroll/tests/test_us_id_idaho_payslip_2020.py
@@ -30,6 +30,6 @@ class TestUsIDPayslip(TestUsPayslip):
         self._test_er_suta('ID', self.ID_UNEMP, date(2020, 1, 1), wage_base=self.ID_UNEMP_MAX_WAGE)
         self._test_sit(1212.0, 'single', 4.0, 'bi-weekly', date(2020, 1, 1), 10.0)
         self._test_sit(10000.0, 'married', 1.0, 'annually', date(2020, 1, 1), 0.0)
-        self._test_sit(52000.0, 'married', 4.0, 'monthly', date(2020, 1, 1), 3348.02)
+        self._test_sit(52000.0, 'married', 4.0, 'monthly', date(2020, 1, 1), 3345.0)
         self._test_sit(5000.0, 'head of household', 0.0, 'semi-monthly', date(2020, 1, 1), 300.0)
         self._test_sit(5900.0, 'single', 5.0, 'weekly', date(2020, 1, 1), 367.0)