This calculator works out the exact PAYE payment and payday filing due dates for any pay run, based on IRD's employer rules. You enter your total PAYE plus ESCT deductions from the previous 12 months, which sets whether you're a monthly payer (at or under the $500,000 threshold, paying once a month on the 20th) or a twice-monthly payer (over $500,000, paying on the 20th and 5th). You also pick your filing method, electronic or paper, and the pay date for the run. The calculator returns your employer type, the payday filing due date (2 working days for electronic filers, 10 calendar days for paper IR348 filers), the PAYE, ESCT and KiwiSaver payment due date, and the tax year the run falls in. If a due date lands on a weekend or public holiday, it automatically shifts to the next working day and flags the change. A penalty table shows late payment penalties (1% the day after the due date, a further 4% after seven days, plus use-of-money interest) and late filing penalty amounts, showing what's at stake if a deadline slips. Use it to plan payroll cash flow, confirm which threshold applies to your business, or check a specific pay date. These are indicative statutory dates and penalty rates; always confirm current figures and file and pay through myIR or your payroll software.
The $500,000 threshold is based on your PAYE plus ESCT in the prior 12 months (not gross wages). For a typical NZ business, this equates to gross annual payroll of roughly $2.0m-$2.5m depending on salary mix.
Separate from payment dates, every pay run must be filed to IRD via payday filing:
If a payment or filing due date falls on a weekend or public holiday, it moves to the next working day. NZ-wide public holidays include New Year (1 and 2 January), Waitangi Day (6 February), Good Friday and Easter Monday (variable), ANZAC Day (25 April), King's Birthday (first Monday in June), Matariki (variable), Labour Day (fourth Monday in October), Christmas Day (25 December) and Boxing Day (26 December). Provincial anniversary days (e.g. Auckland Anniversary, Wellington Anniversary) also apply regionally but do NOT shift IRD due dates.
IRD applies an automatic 1% late payment penalty the day after the due date, plus an additional 4% seven days after the due date. Use-of-money interest accrues daily at the IRD UOMI debit rate (currently 10.88% p.a. as of 8 May 2025). Late filing penalties for payday filing are $250 if gross period earnings are under $500k, or $500 if gross is $500k or more. Repeat offences and larger employers can attract more serious sanctions.
This calculator identifies the correct statutory due dates per IRD rules. It does not process your actual filings. Use myIR or your payroll software for actual payday filing and payment.
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