Paying staff a Christmas bonus in New Zealand: the tax, the KiwiSaver and the real cost

A Christmas bonus in New Zealand is taxed as an “extra pay”. It goes through payroll with PAYE at a single flat rate. You find that rate by annualising the employee’s last four weeks of pay and adding the bonus. KiwiSaver deductions and employer contributions apply too. If you pay the bonus every year, it may also count towards holiday pay. The PAYE is due to Inland Revenue in January.

That’s the short version. The longer one matters because the numbers don’t behave the way most owners expect. A $500 bonus costs the business more than $500, and it puts noticeably less than $500 in your barista’s pocket. The cash also leaves in two instalments, the second of them in the tightest fortnight of the year.

October is the right time to work it out, before you’ve told anyone a figure.

Is a Christmas bonus taxed differently from normal pay?

Yes. Inland Revenue lists annual bonuses and special bonuses as lump sum payments, also called extra pays, alongside back pay and retiring payments. You can’t run them through the ordinary PAYE calculator. Inland Revenue says you “cannot use our PAYE calculator” for lump sums.

The method in the September 2026 employer’s guide (IR335) has three steps:

1. Annualise their pay. Add up what the employee earned in the four weeks ending on the bonus date, leaving out the bonus. Multiply by 13 if they’re paid weekly, fortnightly or four-weekly, or by 12 if they’re paid monthly.
2. Add the bonus. Annualised pay plus the bonus gives the figure you look up.
3. Apply one flat rate to the whole bonus. Use the rate for the band that figure falls in.

For the 2026–27 tax year, the extra pay rates are:

Annualised pay + bonus	PAYE rate incl. ACC earners’ levy	Excl. levy
$0 – $15,600	12.25%	10.50%
$15,601 – $53,500	19.25%	17.50%
$53,501 – $78,100	31.75%	30.00%
$78,101 – $156,641	34.75%	33.00%
$156,642 – $180,000	33.00%	33.00%
$180,001 upwards	39.00%	39.00%

The ACC earners’ levy stops at $156,641, which is why the rate dips in the fifth band. Most small-business staff use the “including levy” column.

Two quirks catch people out. First, the rate isn’t split across the bands the way annual income tax is. The whole bonus is taxed at one rate, so a modest bonus can be taxed noticeably harder than the employee’s normal pay. Most of that evens out when they file. Second, staff on a secondary tax code use a different calculation, with a “low threshold” set by their code. Your payroll software should handle both, but check the first one by hand.

What does a bonus add to KiwiSaver?

More than people budget for. Inland Revenue is clear that, unless the lump sum is a redundancy payment, you “deduct and pay employee KiwiSaver deductions, net employer contributions and ESCT as usual.”

So on every dollar of bonus for a KiwiSaver member:

• The employee’s deduction comes out at their normal rate (3.5% by default, or 4%, 6%, 8% or 10% if they’ve chosen one).
• Your employer contribution is added on top. That’s at least 3.5% since 1 April 2026, as our page on KiwiSaver employer contributions explains.
• ESCT is deducted from your contribution at the employee’s ESCT rate. It isn’t an extra cost, but it does change how much reaches their fund.

In practice, a $500 bonus costs you $517.50 for a KiwiSaver member at the minimum employer rate, before any holiday pay effect.

Does a Christmas bonus count for holiday pay?

This is the trap most owners haven’t heard of. Holiday pay is based on “gross earnings”, and a payment you’re not bound to make is left out. But Employment New Zealand’s guidance is blunt: “true discretionary payments are rare”. Calling a bonus discretionary in the employment agreement doesn’t make it so.

Its own examples split along one line:

Your Christmas bonus pattern	Likely treatment
Paid to all staff every year, and mentioned when people start	Not discretionary, so included in gross earnings
Paid from time to time, when there’s been a good year	More likely discretionary, so excluded

If your bonus falls in the first row, it feeds into each employee’s average weekly earnings. That can lift what you pay when they take annual leave in January. For staff on pay-as-you-go holiday pay, it means adding 8% to the bonus. It’s not usually a big number per person, but it’s real money across a whole team. Ask your payroll provider which way your bonus falls before Christmas, not after.

Cash or vouchers: is a gift card cheaper?

Not automatically. A gift card or voucher is a fringe benefit, not a tax-free present. Inland Revenue’s limits for FBT on unclassified benefits and gift cards are:

• $300 per employee per quarter (or $1,200 a year if you file FBT annually), and
• $22,500 across all employees over 12 months.

Stay under both and there’s no FBT. Go over either and FBT applies to the full value, not just the excess. Other small non-cash perks, such as a Christmas hamper, count towards the same limits.

Since 16 April 2025, you can also choose to treat all gift cards as pay and run them through PAYE instead of FBT. That’s simpler for some employers, but the voucher then costs much the same as cash.

For a small team, a voucher under $300 each can be a tidy way to say thanks with no tax deducted. For anything bigger, cash through payroll is usually simpler and lands better.

If you’re still deciding whether the business can afford either, it’s worth seeing what funding options you qualify for before you promise a figure. That way the decision rests on numbers rather than hope.

An illustrative example: a Nelson café

This is a made-up example to show the arithmetic. It isn’t a real business.

A café in Nelson has six staff and a good spring. The owner plans a $500 cash bonus each, paid in the last fortnightly pay before closing on 23 December. All six are in KiwiSaver at 3.5%, and the café puts in the 3.5% minimum.

Two of the six show how differently the same bonus lands:

	Full-time barista	Part-time front-of-house
Normal pay	40 hrs × $27 = $1,080 a week	20 hrs × $24 = $480 a week
Last four weeks	$4,320	$1,920
Annualised (×13)	$56,160	$24,960
Plus $500 bonus	$56,660	$25,460
Extra pay rate	31.75%	19.25%
PAYE on the bonus	$158.75	$96.25
Employee KiwiSaver (3.5%)	$17.50	$17.50
Bonus in hand	$323.75	$386.25
Employer KiwiSaver (3.5%)	$17.50	$17.50
Cost to the café	$517.50	$517.50

The barista is a little disappointed. So the owner looks at a “$500 in hand” bonus instead, grossing it up: $500 ÷ (1 − 0.3175 − 0.035) = about $772 gross. That still sits in the same band. It adds roughly $283 to the cost for that one person, and the same exercise across the team would add well over $1,000.

Then the timing. Across six staff, $3,000 of bonuses plus $105 of employer KiwiSaver means $3,105 of cost. The net pay leaves on 23 December. The PAYE, KiwiSaver and ESCT go to Inland Revenue on 20 January, because the café’s annual PAYE is well under $500,000. That’s five days after the 15 January provisional tax instalment and the GST return for the period ending 30 November. It also lands while the café is just reopening after the break. Our PAYE and payday filing page has the full deduction calendar.

None of it is unaffordable. But it’s a cheque the owner would rather write in October than discover in January.

How do you plan a bonus the cash can carry?

1. Decide the figure gross or net. Promising “$500” without saying which is how bonuses go wrong. Grossing up costs noticeably more.
2. Run each person through the extra pay steps. Different hours mean different bands. Your payroll system will do it, but check one by hand.
3. Add employer KiwiSaver at your rate, at least 3.5%.
4. Ask about holiday pay. If the bonus is a yearly fixture, assume it counts towards gross earnings and budget for the knock-on in January leave.
5. Put the PAYE date in the diary. December deductions are due on 20 January for most small employers. Set the money aside in the tax account when you pay the bonus.
6. Check it against January. Run the GST & provisional tax set-aside planner and our summer close-down plan side by side. Make sure the bonus, holiday pay, GST and provisional tax all fit before customers come back.
7. Think about the pattern you’re creating. A bonus paid every December becomes an expectation, and probably part of gross earnings. A “good year” bonus paid occasionally keeps more flexibility.

If you’re still working out what a team member really costs once all of this is added, our page on the true cost of an employee puts it in one place.

Rewarding the team shouldn’t leave you short in January

Paying a bonus says the year went well and the people made it happen. The awkward part is timing. The thank-you leaves in December. The tax on it follows in January, alongside provisional tax, GST, holiday pay and a quiet till. That gap isn’t a sign of trouble. It’s just the New Zealand calendar.

This is where we can help. We work with New Zealand owners who want to keep their promises to staff and still head into the new year with cash in the account. That could mean unsecured or cash-flow funding for trading businesses, typically $5,000 to $500,000 and sized on turnover and bank statements, or property-secured lending from $20,000 to $5,000,000. Lending is for business purposes only. Bad credit and IRD debt are considered case by case.

The enquiry takes about 60 seconds, and simply asking leaves your credit file alone, because there’s no credit check when you first enquire. We don’t send your details to a pile of lenders, so you won’t get a run of calls from people you’ve never heard of. A real person reads what you’ve told us about your team, your season and your January, then calls you to talk it through. Please fill the form in accurately, especially turnover and what you need, so we can find the right fit first time.

See if you qualify →