suite/l10n_us_oh_hr_payroll/data/rules.xml

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

<!-- HR SALARY RULES-->
    <record id="hr_payroll_rules_oh_unemp_wages_2018" model="hr.salary.rule">
        <field name="sequence" eval="423"/>
        <field name="category_id" ref="hr_payroll_oh_unemp_wages"/>
        <field name="name">Wage: US-OH Unemployment</field>
        <field name="code">WAGE_US_OH_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_OH_UNEMP')
year = int(payslip.dict.date_from[:4])
ytd = payslip.sum('WAGE_US_OH_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_oh_unemp_2018" model="hr.salary.rule">
        <field name="sequence" eval="443"/>
        <field name="category_id" ref="hr_payroll_oh_unemp"/>
        <field name="name">ER: US-OH Unemployment</field>
        <field name="code">ER_US_OH_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_OH_UNEMP')
result_rate = -rate.rate
result = categories.WAGE_US_OH_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_ohdor_unemp"/>
        <field name="appears_on_payslip" eval="False"/>
    </record>

    <record id="hr_payroll_rules_oh_inc_withhold_2018" model="hr.salary.rule">
        <field name="sequence" eval="145"/>
        <field name="category_id" ref="hr_payroll_oh_income_withhold"/>
        <field name="name">EE: US-OH Income Withholding</field>
        <field name="code">EE_US_OH_INC_WITHHOLD</field>
        <field name="condition_select">python</field>
        <field name="condition_python">result = True</field>
        <field name="amount_select">code</field>
        <field name="amount_python_compute">
wages = categories.GROSS
allowances = contract.oh_income_allowances
schedule_pay = contract.schedule_pay
val = 0.00

PP = 0
if 'weekly' == schedule_pay:
    PP = 52
elif 'bi-weekly' == schedule_pay:
    PP = 26
elif 'semi-monthly' == schedule_pay:  # impossible
    PP = 24
elif 'monthly' == schedule_pay:
    PP = 12
elif 'quarterly' == schedule_pay:
    PP = 4
elif 'semi-annually' == schedule_pay:
    PP = 2
elif 'annually' == schedule_pay:
    PP = 1
else:
    raise Exception('Invalid schedule_pay="' + schedule_pay + '" for OH Income Withholding calculation')

# Algorithm from http://www.tax.ohio.gov/Portals/0/employer_withholding/August2015Rates/WTH_OptionalComputerFormula_073015.pdf
TW = (wages * PP) - (650 * allowances)
if TW &lt;= 5000.0:
    WD = ((TW * 0.005) / PP) * 1.112
elif TW &lt;= 10000.0:
    WD = ((((TW - 5000.0) * 0.01) + 25.0) / PP) * 1.112
elif TW &lt;= 15000.0:
    WD = ((((TW - 10000.0) * 0.02) + 75.0) / PP) * 1.112
elif TW &lt;= 20000.0:
    WD = ((((TW - 15000.0) * 0.025) + 175.0) / PP) * 1.112
elif TW &lt;= 40000.0:
    WD = ((((TW - 20000.0) * 0.03) + 300.0) / PP) * 1.112
elif TW &lt;= 80000.0:
    WD = ((((TW - 40000.0) * 0.035) + 900.0) / PP) * 1.112
elif TW &lt;= 100000.0:
    WD = ((((TW - 80000.0) * 0.04) + 2300.0) / PP) * 1.112
else:
    WD = ((((TW - 100000.0) * 0.05) + 3100.0) / PP) * 1.112
result = -WD
        </field>
        <field name="register_id" ref="contrib_register_ohdor_withhold"/>
    </record>

    </data>
</odoo>