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KiwiSaver employer contribution
calculator (NZ)

Work out your 3.5% employer contribution, and see how much actually lands in the employee's account after ESCT.

Your numbers

3.5% from 1 April 2026, rising to 4% from 1 April 2028
Employer contribution
 
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What is the compulsory employer KiwiSaver contribution?

3.5% of gross salary or wages from 1 April 2026, up from 3%. It is scheduled to rise to 4% from 1 April 2028.

How we calculated this

The employer contribution is the gross salary multiplied by the employer rate you entered, 3.5% by default from 1 April 2026. Employer superannuation contribution tax (ESCT) is then deducted from that contribution at the rate set by the employee's earnings band, so we show two numbers: what you pay, and what lands in the employee's account after tax. The gap between them is ESCT. Your cost does not change with the ESCT rate; the employee's balance does. The working and the sources sit below.

New to the term? Read the plain-English definition of KiwiSaver employer contributions in the HR Glossary.

Your working
Assumptions
  • Uses the 3.5% compulsory employer rate from 1 April 2026 unless you change it. It rises to 4% on 1 April 2028, and drops to 3% where the employee has an approved temporary savings rate reduction and you choose to match it.
  • Sets the ESCT rate from the salary you entered, using the bands of 10.5% to $18,720, 17.5% to $64,200, 30% to $93,720, 33% to $216,000 and 39% above. In practice the rate is based on the employee's total salary plus employer contributions in the previous tax year, so a new starter or a recent pay rise can sit in a different band.
  • Assumes you deduct ESCT from the contribution rather than including the contribution in gross pay under PAYE. Both are allowed; the cost to you is the same, the payslip looks different.
  • Ignores the employee's own contribution and the government contribution. Any voluntary employer contribution above the minimum is not counted either. Employer contributions for 16 and 17 year olds are compulsory from 1 April 2026 and are included if you enter their salary.
Sources

What to do about it

KiwiSaver is a retention benefit that only pays off if the person stays long enough to value it. Most people who leave do not leave over the contribution rate. These steps are for whoever runs payroll or owns the benefits budget, whether or not they own the retention numbers.

1

Set the ESCT rate off last year's figures, per person

Total salary plus employer contributions in the previous tax year sets the band, and a new starter uses an estimate. Get it wrong and the employee's balance is short or Inland Revenue asks for the difference. Note the band and the year it was set against each record.

2

Budget the 3.5%, then plan for 4%

Put the current rate into the payroll forecast and add a line for April 2028. If you match temporary savings rate reductions at 3%, track how many staff are on one, because they reset to the default within twelve months.

3

Show the employer contribution in dollars

Employees see their own deduction and rarely see yours arrive. Put the employer contribution on the payslip and in the offer letter as a dollar figure, and explain that ESCT comes out of it. A benefit people cannot see does no retention work.

4
Where a tool helps

Find out why people leave before you raise the contribution

Before offering a higher employer rate to compete for talent, look at the last twelve months of exits by manager, tenure, team and role. If the pattern is a manager or a workload, a bigger contribution will not fix it.

KiwiSaver you can see.
Drift you cannot.

Compono is a talent intelligence platform: an applicant tracking system and an employee engagement platform built on the same people data. Payroll works out KiwiSaver and ESCT correctly and has nothing to say about whether the person will still be here to collect it.

Compono reads fit before you make the offer, so the person suits the team from day one, and reads engagement and culture while they are on the payroll, so a manager or workload problem is visible before it becomes a resignation. Step 4 asks why people leave. Compono is the people data behind the answer.

See how it works
Compono
$34M
saved by VicRoads over two years

Common questions

Is ESCT paid on top of the 3.5%?

No. ESCT is deducted from the employer contribution, so the employer's cost stays at 3.5% and the employee's account receives the balance after tax.

Can an employee contribute less than the standard rate?

An employee can apply for a temporary savings rate reduction to 3%, renewable every 12 months. Where that applies, the compulsory employer contribution also drops to 3%.

Do we have to contribute for under-18s?

Yes, for 16 and 17 year olds, from 1 April 2026. That is a change from the previous rules.

This page is general information, not legal advice. We check figures annually and update them on a best-efforts basis, but employment rules change and we cannot promise everything here is current or complete. Before you act on it, confirm the detail with Employment New Zealand or your own adviser. Last reviewed July 2026.

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KiwiSaver employer contributions

The plain-English definition, with the calculators and rules that sit around it.

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