KiwiSaver contribution rates: which one should you pick?

The minimum is stepping up to 4%

From 1 April 2026 the default minimum contribution rate for both employees and employers rose from 3% to 3.5%. It rises again to 4% on 1 April 2028. Employees who would find the higher rate hard can apply to Inland Revenue to stay on 3% for a period — but staying lower also means a lower employer contribution.

The payroll rate options themselves stay the same — 3%, 4%, 6%, 8% or 10% — so if you were defaulted onto 3.5%, your payslip simply shows the new minimum rather than a rate you picked.

Where the money in your account comes from

Contribution rate settings and the employer minimum have been adjusted by government over time, and the government contribution has both a maximum and an income cap. Check the current figures on the Inland Revenue website before making a decision based on exact dollars.

• You — a percentage of your gross pay, deducted automatically.
• Your employer — a compulsory contribution while you are contributing, subject to employer superannuation contribution tax (ESCT), so what lands is a little less than the headline percentage.
• The government — an annual contribution for eligible members, paid after the KiwiSaver year ends on 30 June, based on what you personally put in.
• Investment returns — the part that does the heavy lifting over decades.

The employer contribution: how it works and why less lands than you expect

If you are employed and contributing, your employer must also contribute at the compulsory minimum rate — currently 3.5% of your gross pay, rising to 4% on 1 April 2028. Some employers contribute more as a benefit, and some offer 'total remuneration' packages where the employer share comes out of your package — check your employment agreement so you know which you have.

The amount that actually reaches your account is reduced by employer superannuation contribution tax (ESCT), which is deducted from the employer contribution before it is invested. ESCT ranges from 10.5% to 39% depending on your income, so a 3.5% employer contribution typically lands as roughly 2.4%–3.1% of your gross pay. Your own contributions are not taxed this way — they come out of your after-tax pay in full.

Employer contributions apply to your gross salary or wages including overtime, bonuses and most taxable allowances, and they stop during a savings suspension or parental leave in most cases.

Self-employed? The rules are different

Self-employed people have no employer to match them, and payroll rates do not apply — you agree a contribution amount directly with your provider. The government contribution still works exactly the same way, so the goal for most self-employed savers is to contribute enough each KiwiSaver year to unlock the full government top-up.

Because there is no employer money on the table, the decision is really about the government top-up plus long-term returns versus other uses of the cash. Our self-employed planner works out the exact weekly amount needed to capture the full government contribution.

Self-employed contribution planner

The first rule: contribute enough to get the full employer match

Your employer contributes while you do. Contributing nothing — for example while on a savings suspension — usually means no employer contribution either. That is the single most expensive setting in KiwiSaver, because you are declining money that is only available through this account.

Going above the minimum does not increase the employer contribution. Employers are only required to match up to the statutory minimum rate; extra contributions above that are yours alone.

The second rule: clear the government contribution threshold

The government pays a set number of cents for every dollar you contribute yourself, up to an annual maximum, provided you are eligible. For most employees on a percentage deduction, ordinary pay clears the threshold comfortably. For part-time workers, contractors and anyone on a low or irregular income, it may not.

If you are short, a voluntary top-up before 30 June closes the gap. It is the highest guaranteed return available anywhere in the New Zealand market, and it is available once a year.

What the higher rates actually cost you week to week

Contributions come out of before-tax pay, so each extra percentage point costs less in take-home pay than the percentage suggests once PAYE is accounted for. On a $75,000 salary, moving from 3% to 4% is roughly $14 of gross pay a week.

Compounded across a working life, that same $14 a week is not a rounding error — it is often tens of thousands of dollars of final balance, because the extra contributions have decades to grow.

When a higher rate is the wrong call

• You are carrying high-interest debt. Paying off a credit card at 20% beats almost any investment return, guaranteed.
• You have no emergency fund. KiwiSaver is locked until 65 apart from limited exceptions, so money you might need next year should not go in.
• You are saving for something before 65 that is not a first home. KiwiSaver cannot be used for it.
• The higher rate would leave you short each week. A rate you have to reverse in three months achieves nothing.

How to change your rate

• Tell your employer in writing — a KS2 form or an email is enough. Payroll applies it from the next pay run.
• You can generally increase your rate at any time, and change it again after three months unless your employer agrees to sooner.
• Voluntary contributions can be made directly to Inland Revenue or your provider at any time, on top of payroll deductions, including if you are self-employed.

A reasonable rule of thumb

Start at the minimum that secures the employer contribution. Make sure your annual personal contributions clear the government contribution threshold. Then, each time you get a pay rise, move up one contribution rate before you get used to the extra money. You will not miss income you never spent, and the compounding does the rest.

See what your balance adds to NZ Super · KiwiSaver for beginners · Getting a pay rise? See what it's worth after tax and KiwiSaver (NZ Payrise)