Module: HrLite::Calculators::ProfessionalTax

Defined in:
app/services/hr_lite/calculators/professional_tax.rb

Overview

State-slab professional tax on earned gross. Unknown states and states without PT (UP, Uttarakhand) simply yield zero. Slabs may carry a feb_extra for states that top up the February deduction.

Class Method Summary collapse

Class Method Details

.call(state:, gross_earned:, period_month:, rates:) ⇒ Object 



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# File 'app/services/hr_lite/calculators/professional_tax.rb', line 7

def self.call(state:, gross_earned:, period_month:, rates:)
  slabs = rates[state.to_s] || []
  earned = Money.d(gross_earned)

  # `from:` is an INCLUSIVE lower bound — ₹25,000 is taxed, ₹24,999.50 is
  # not. The older exclusive `above:` form still works so a host's own
  # slab table keeps functioning, but it cannot express that boundary on
  # a decimal amount: `above: 24999` taxed a prorated ₹24,999.50.
  slab = slabs.reverse.find { |row| row[:from] ? earned >= row[:from] : earned > row[:above] }
  return BigDecimal(0) unless slab

  amount = slab[:monthly]
  amount += slab[:feb_extra] if slab[:feb_extra] && period_month.month == 2
  Money.round_rupee(amount)
end