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74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
# Part of Hibou Suite Professional. See LICENSE_PROFESSIONAL file for full copyright and licensing details.
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from .general import _state_applies, sit_wage
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def wi_wisconsin_state_income_withholding(payslip, categories, worked_days, inputs):
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"""
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Returns SIT eligible wage and rate.
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:return: result, result_rate (wage, percent)
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"""
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state_code = 'WI'
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if not _state_applies(payslip, state_code):
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return 0.0, 0.0
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# Determine Wage
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wage = sit_wage(payslip, categories)
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if not wage:
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return 0.0, 0.0
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if payslip.contract_id.us_payroll_config_value('state_income_tax_exempt'):
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return 0.0, 0.0
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filing_status = payslip.contract_id.us_payroll_config_value('wi_wt4_sit_filing_status')
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if not filing_status:
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return 0.0, 0.0
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pay_periods = payslip.dict.get_pay_periods_in_year()
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additional = payslip.contract_id.us_payroll_config_value('state_income_tax_additional_withholding')
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exemptions = payslip.contract_id.us_payroll_config_value('wi_wt4_sit_exemptions')
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exemption_amt = payslip.rule_parameter('us_wi_sit_exemption_rate')
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# deduction_table introduced in 2022
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deduction_table = payslip.rule_parameter('us_wi_sit_deduction_rate')
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if deduction_table:
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deduction_table = deduction_table[filing_status]
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# tax_table simplified in 2022
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tax_table = payslip.rule_parameter('us_wi_sit_tax_rate')
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if isinstance(tax_table, dict):
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tax_table = tax_table[filing_status]
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taxable_income = wage * pay_periods # (a)
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if deduction_table:
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deduction = 0.0
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last_wage_cap = 0.0
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last_deduction = 0.0
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last_rate = 0.0
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for row in deduction_table:
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wage_cap, deduction, rate = row
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if taxable_income <= wage_cap:
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if last_rate:
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deduction = last_deduction - ((taxable_income - last_wage_cap) * last_rate / 100.0)
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break
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last_wage_cap, last_deduction, last_rate = row
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taxable_income -= deduction # (b)
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taxable_income -= exemption_amt * exemptions # (c)
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if taxable_income <= 0.0:
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return 0.0, 0.0
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withholding = 0.0
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last = 0.0
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for row in tax_table:
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amt, rate, flat_fee = row
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if taxable_income <= float(amt):
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withholding = (((taxable_income - last) * (rate / 100)) + flat_fee)
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break
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last = amt
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withholding = max(withholding, 0.0)
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withholding /= pay_periods
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withholding += additional
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return wage, -((withholding / wage) * 100.0)
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