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46 lines
1.7 KiB
Python
46 lines
1.7 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 mt_montana_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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WAGE = GROSS + DED_FIT_EXEMPT
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:return: result, result_rate (wage, percent)
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"""
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state_code = 'MT'
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if not _state_applies(payslip, state_code):
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return 0.0, 0.0
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if payslip.contract_id.us_payroll_config_value('mt_mw4_sit_exempt'):
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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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schedule_pay = payslip.contract_id.schedule_pay
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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('mt_mw4_sit_exemptions')
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exemption_rate = payslip.rule_parameter('us_mt_sit_exemption_rate').get(schedule_pay)
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withholding_rate = payslip.rule_parameter('us_mt_sit_rate').get(schedule_pay)
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if not exemption_rate or not withholding_rate:
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return 0.0, 0.0
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adjusted_wage = wage - (exemption_rate * (exemptions or 0))
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withholding = 0.0
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if adjusted_wage > 0.0:
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prior_wage_cap = 0.0
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for row in withholding_rate:
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wage_cap, base, rate = row
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wage_cap = float(wage_cap) # e.g. 'inf'
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if adjusted_wage < wage_cap:
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withholding = round(base + ((rate / 100.0) * (adjusted_wage - prior_wage_cap)))
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break
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prior_wage_cap = wage_cap
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withholding += additional
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return wage, -((withholding / wage) * 100.0)
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