Choosing your KiwiSaver contribution rate

Your fund gets the headlines, but your contribution rate is the other half of the story. It’s the lever you control completely, you can change it through your employer, and a small early lift compounds into a surprisingly large difference by retirement.

How the rate works

If you’re an employee, you contribute a set percentage of your before-tax pay – the default is 3.5%, with 4%, 6%, 8% and 10% also available. Your contribution comes out of each pay automatically, your employer contributes at least 3.5% on top, and the Government adds its annual top-up if you contribute enough and are eligible.

Note: the default employee and minimum employer rates rose from 3% to 3.5% on 1 April 2026 and are scheduled to rise to 4% on 1 April 2028. If 3.5% is genuinely too much right now, you can apply to Inland Revenue for a temporary reduction to 3% (3 to 12 months at a time). Settings are current as at mid-2026 and can change – check ird.govt.nz or ask us.

Why a small lift matters so much

Moving from the minimum rate to the next step up might only be a modest amount out of each pay – but it goes in every pay, for decades, and every dollar earns returns on returns. The earlier the lift, the longer compounding works on it. That’s why the difference between a 3% saver and a 6% saver at retirement is usually far bigger than people expect.

Two more multipliers make it better:

• You may unlock more of the Government top-up. If your pay is modest, the minimum rate alone may not reach the qualifying contribution for the full Government top-up – a higher rate can get you there.
• It’s invisible after a month. Contributions come out before pay reaches your account. Most people simply stop noticing.

How to choose

• Buying a first home soon? A higher rate builds the deposit faster – and every dollar you put in is one you can withdraw later.
• Budget genuinely tight? Stay at a rate you can sustain. Consistency beats a heroic rate you abandon in three months.
• Just had a pay rise? The perfect moment: lift your rate before you get used to the extra income and you’ll never feel it.
• Not sure what you’re on now? Check a payslip or your provider’s app – plenty of people are still on the default without realising.

Try it on your own numbers

Play with the maths yourself in our compound interest calculator – set your own growth rate, punch in a weekly amount, and watch what a few extra dollars a pay becomes over the decades. Our advisers can model exactly what a rate change means for your balance at 65 too – it’s part of every KiwiSaver review. Or start with the 30-second Mind the Gap check to see whether the fund itself is pulling its weight first.