diff --git a/l10n_us_hr_payroll/data/state/ar_arkansas.xml b/l10n_us_hr_payroll/data/state/ar_arkansas.xml
index a59e57aa..3e5b8211 100644
--- a/l10n_us_hr_payroll/data/state/ar_arkansas.xml
+++ b/l10n_us_hr_payroll/data/state/ar_arkansas.xml
@@ -62,6 +62,8 @@
             <field name="rule_parameter_id" ref="rule_parameter_us_ar_sit_tax_rate"/>
             <field name="date_from" eval="datetime(2019, 1, 1).date()"/>
         </record>
+        <!-- https://www.dfa.arkansas.gov/images/uploads/incomeTaxOffice/whformula.pdf-->
+        <!-- Notover, percentage , minus adjustment  page 1. 3.-->
         <record id="rule_parameter_us_ar_sit_tax_rate_2020" model="hr.rule.parameter.value">
             <field name="parameter_value">[
                 (  4599, 0.0,    0.00),
diff --git a/l10n_us_hr_payroll/models/state/ar_arkansas.py b/l10n_us_hr_payroll/models/state/ar_arkansas.py
index e22c41b3..c1306c94 100644
--- a/l10n_us_hr_payroll/models/state/ar_arkansas.py
+++ b/l10n_us_hr_payroll/models/state/ar_arkansas.py
@@ -18,7 +18,7 @@ def ar_arkansas_state_income_withholding(payslip, categories, worked_days, input
 
     # Determine Wage
     wage = sit_wage(payslip, categories)
-    if wage == 0.0:
+    if not wage:
         return 0.0, 0.0
 
     pay_periods = payslip.dict.get_pay_periods_in_year()
diff --git a/l10n_us_hr_payroll/tests/test_us_ar_arkansas_payslip_2020.py b/l10n_us_hr_payroll/tests/test_us_ar_arkansas_payslip_2020.py
index bf630b6c..6afe3d4d 100644
--- a/l10n_us_hr_payroll/tests/test_us_ar_arkansas_payslip_2020.py
+++ b/l10n_us_hr_payroll/tests/test_us_ar_arkansas_payslip_2020.py
@@ -30,6 +30,6 @@ class TestUsARPayslip(TestUsPayslip):
         self._test_er_suta('AR', self.AR_UNEMP, date(2020, 1, 1), wage_base=self.AR_UNEMP_MAX_WAGE)
         self._test_sit(5000.0, True, 0.0, 0, 'monthly', date(2020, 1, 1), 0.0)
         self._test_sit(5000.0, False, 0.0, 0, 'monthly', date(2020, 1, 1), 221.0)
-        self._test_sit(5000.0, False, 0.0, 150, 'monthly', date(2020, 1, 1), 371.0)
-        self._test_sit(5000.0, False, 2.0, 0, 'monthly', date(2020, 1, 1), 217)
-        self._test_sit(5000.0, False, 2.0, 150, 'monthly', date(2020, 1, 1), 367)
+        self._test_sit(700.0, False, 0.0, 150, 'weekly', date(2020, 1, 1), 175.0)
+        self._test_sit(7000.0, False, 2.0, 0, 'semi-monthly', date(2020, 1, 1), 420.0)
+        self._test_sit(3000.0, False, 1.0, 0, 'bi-weekly', date(2020, 1, 1), 142.0)