diff --git a/l10n_us_hr_payroll/data/state/pa_pennsylvania.xml b/l10n_us_hr_payroll/data/state/pa_pennsylvania.xml
index f46a92b4..c8002192 100644
--- a/l10n_us_hr_payroll/data/state/pa_pennsylvania.xml
+++ b/l10n_us_hr_payroll/data/state/pa_pennsylvania.xml
@@ -7,11 +7,7 @@
         <field name="country_id" ref="base.us"/>
     </record>
     <data noupdate="1">
-        <record id="rule_parameter_us_pa_suta_wage_base_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">10000.00</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_wage_base"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
+        <!-- Unchanged for 2021 https://www.uc.pa.gov/employers-uc-services-uc-tax/uc-tax-rates/Pages/Yearly-Tax-Highlights.aspx -->
         <record id="rule_parameter_us_pa_suta_wage_base_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">10000.00</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_wage_base"/>
@@ -26,11 +22,7 @@
         <field name="country_id" ref="base.us"/>
     </record>
     <data noupdate="1">
-        <record id="rule_parameter_us_pa_suta_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">3.6890</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
+        <!-- Unchanged for 2021 https://www.uc.pa.gov/employers-uc-services-uc-tax/uc-tax-rates/Pages/Yearly-Tax-Highlights.aspx -->
         <record id="rule_parameter_us_pa_suta_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">3.6890</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_rate"/>
@@ -44,11 +36,7 @@
         <field name="country_id" ref="base.us"/>
     </record>
     <data noupdate="1">
-        <record id="rule_parameter_us_pa_suta_ee_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">0.06</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_ee_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
+        <!-- unchanged in 2021 https://www.uc.pa.gov/employers-uc-services-uc-tax/uc-tax-rates/Pages/Yearly-Tax-Highlights.aspx -->
         <record id="rule_parameter_us_pa_suta_ee_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">0.06</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_pa_suta_ee_rate"/>
@@ -62,11 +50,7 @@
         <field name="country_id" ref="base.us"/>
     </record>
     <data noupdate="1">
-        <record id="rule_parameter_us_pa_sit_rate_2019" model="hr.rule.parameter.value">
-            <field name="parameter_value">3.07</field>
-            <field name="rule_parameter_id" ref="rule_parameter_us_pa_sit_rate"/>
-            <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
-        </record>
+        <!-- unchanged in 2021 https://www.revenue.pa.gov/GeneralTaxInformation/Tax%20Types%20and%20Information/EmployerWithholding/Pages/default.aspx -->
         <record id="rule_parameter_us_pa_sit_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">3.07</field>
             <field name="rule_parameter_id" ref="rule_parameter_us_pa_sit_rate"/>
diff --git a/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2019.py b/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2019.py
deleted file mode 100755
index ce7e4fb4..00000000
--- a/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2019.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# Part of Hibou Suite Professional. See LICENSE_PROFESSIONAL file for full copyright and licensing details.
-
-from .common import TestUsPayslip, process_payslip
-
-
-class TestUsPAPayslip(TestUsPayslip):
-    ###
-    #    Taxes and Rates
-    ###
-    PA_UNEMP_MAX_WAGE = 10000.0
-    ER_PA_UNEMP = -3.6890 / 100.0
-    EE_PA_UNEMP = -0.06 / 100.0
-    PA_INC_WITHHOLD = 3.07
-
-    def test_2019_taxes(self):
-        salary = 4166.67
-        wh = -127.92
-
-
-        employee = self._createEmployee()
-        contract = self._createContract(employee,
-                                        wage=salary,
-                                        state_id=self.get_us_state('PA'))
-
-        self._log('2019 Pennsylvania tax first payslip:')
-        payslip = self._createPayslip(employee, '2019-01-01', '2019-01-31')
-        payslip.compute_sheet()
-
-        cats = self._getCategories(payslip)
-
-        self.assertPayrollEqual(cats['EE_US_SUTA'], cats['GROSS'] * self.EE_PA_UNEMP)
-        self.assertPayrollEqual(cats['ER_US_SUTA'], cats['GROSS'] * self.ER_PA_UNEMP)
-        self.assertPayrollEqual(cats['EE_US_SIT'], wh)
diff --git a/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2021.py b/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2021.py
new file mode 100755
index 00000000..800fe972
--- /dev/null
+++ b/l10n_us_hr_payroll/tests/test_us_pa_pennsylvania_payslip_2021.py
@@ -0,0 +1,43 @@
+# Part of Hibou Suite Professional. See LICENSE_PROFESSIONAL file for full copyright and licensing details.
+
+from datetime import date
+from .common import TestUsPayslip
+
+
+class TestUsPAPayslip(TestUsPayslip):
+    ###
+    #    Taxes and Rates
+    ###
+    PA_UNEMP_MAX_WAGE = 10000.0
+    ER_PA_UNEMP = 3.6890
+    EE_PA_UNEMP = 0.06
+    PA_INC_WITHHOLD = 3.07
+
+    def test_2021_taxes(self):
+        self._test_er_suta('PA', self.ER_PA_UNEMP, date(2021, 1, 1), wage_base=self.PA_UNEMP_MAX_WAGE)
+        self._test_ee_suta('PA', self.EE_PA_UNEMP, date(2021, 1, 1))
+
+        salary = 4166.67
+        wh = -127.90
+        employee = self._createEmployee()
+        contract = self._createContract(employee,
+                                        wage=salary,
+                                        state_id=self.get_us_state('PA'))
+
+        self._log('2019 Pennsylvania tax first payslip:')
+        payslip = self._createPayslip(employee, '2021-01-01', '2021-01-31')
+        payslip.compute_sheet()
+        cats = self._getCategories(payslip)
+        self.assertPayrollEqual(cats['EE_US_SIT'], wh)
+
+        # Test Additional
+        contract.us_payroll_config_id.state_income_tax_additional_withholding = 100.0
+        payslip.compute_sheet()
+        cats = self._getCategories(payslip)
+        self.assertPayrollEqual(cats['EE_US_SIT'], wh - 100.0)
+
+        # Test Exempt
+        contract.us_payroll_config_id.state_income_tax_exempt = True
+        payslip.compute_sheet()
+        cats = self._getCategories(payslip)
+        self.assertPayrollEqual(cats.get('EE_US_SIT', 0.0), 0.0)