suite/l10n_us_ar_hr_payroll/data/rules.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <record id="hr_payroll_rules_ar_unemp_wages" model="hr.salary.rule">
        <field name="sequence" eval="423"/>
        <field name="category_id" ref="hr_payroll_ar_unemp_wages"/>
        <field name="name">Wage: US-AR Unemployment</field>
        <field name="code">WAGE_US_AR_UNEMP</field>
        <field name="condition_select">python</field>
        <field name="condition_python">result = (contract.futa_type != contract.FUTA_TYPE_BASIC)</field>
        <field name="amount_select">code</field>
        <field name="amount_python_compute">
rate = payslip.dict.get_rate('US_AR_UNEMP')
year = payslip.dict.date_to.year
ytd = payslip.sum('WAGE_US_AR_UNEMP', str(year) + '-01-01', str(year+1) + '-01-01')
ytd += contract.external_wages
remaining = rate.wage_limit_year - ytd
if remaining &lt;= 0.0:
    result = 0
elif remaining &lt; categories.BASIC:
    result = remaining
else:
    result = categories.BASIC
        </field>
        <field name="appears_on_payslip" eval="False"/>
    </record>

    <record id="hr_payroll_rules_ar_unemp" model="hr.salary.rule">
        <field name="sequence" eval="443"/>
        <field name="category_id" ref="hr_payroll_ar_unemp"/>
        <field name="name">ER: US-AR Unemployment</field>
        <field name="code">ER_US_AR_UNEMP</field>
        <field name="condition_select">python</field>
        <field name="condition_python">result = (contract.futa_type != contract.FUTA_TYPE_BASIC)</field>
        <field name="amount_select">code</field>
        <field name="amount_python_compute">
rate = payslip.dict.get_rate('US_AR_UNEMP')
result_rate = -rate.rate
result = categories.WAGE_US_AR_UNEMP

# result_rate of 0 implies 100% due to bug
if result_rate == 0.0:
    result = 0.0
        </field>
        <field name="register_id" ref="contrib_register_ar_dws_unemp"/>
        <field name="appears_on_payslip" eval="False"/>
    </record>

    <record id="hr_payroll_rules_ar_inc_withhold" model="hr.salary.rule">
        <field name="sequence" eval="155"/>
        <field name="category_id" ref="hr_payroll_ar_income_withhold"/>
        <field name="name">EE: US-AR Income Tax Withholding</field>
        <field name="code">EE_US_AR_INC_WITHHOLD</field>
        <field name="condition_select">python</field>
        <field name="condition_python">result = not (contract.ar_ar4ec_texarkana_exemption or contract.ar_ar4ec_tax_exempt)</field>
        <field name="amount_select">code</field>
        <field name="amount_python_compute">
wages = categories.GROSS
annual_gross_pay = 0.00
allowance_amt = contract.ar_ar4ec_allowances * 26.00
schedule_pay = contract.schedule_pay
standard_deduction = 2200
additional_withholding = contract.ar_ar4ec_additional_wh

if contract.w4_filing_status == 'married':
            standard_deduction = standard_deduction * 2

pay_period = 0.0
pay_periods = {
            'weekly': 52.0,
            'bi-weekly': 26.0,
            'semi-monthly': 24.0,
            'monthly': 12.0
            }
if schedule_pay in pay_periods:
    pay_period = pay_periods[schedule_pay]
else:
    raise Exception('Invalid schedule_pay="' + schedule_pay + '" for AR Income Withholding calculation')

annual_gross_pay = (wages * pay_period)
net_taxable_income = annual_gross_pay - standard_deduction - allowance_amt
if (net_taxable_income &lt; 50000.00):
    # This formula will round the number to the nearest 50 if under 50000
    net_taxable_income = (net_taxable_income // 50) * 50.0 + 50.0

tax_rate_table = [(4299, 0.90),
                (8499, 2.50),
                (12699, 3.50),
                (21199, 4.50),
                (35099, 6.0),
                (float('inf'), 6.9)]

result = 0.0
last = 0.0

for row in tax_rate_table:
    cap, rate = row
    if cap &lt;= net_taxable_income:
        taxed = cap - last
        result = result + (taxed * (rate / 100.0))
        last = cap
    elif cap &gt; net_taxable_income:
        taxed = net_taxable_income - last
        result = result + (taxed * (rate / 100.0))
        break

result = (result / pay_period) + additional_withholding
result = -result
        </field>
        <field name="register_id" ref="contrib_register_ar_dfa_withhold"/>
    </record>

</odoo>