A 2028 date with two different meanings
On a $75,000 salary, the enacted rise from 3.5% to 4% takes another $375 a year from pay and directs it into KiwiSaver. That rise is already scheduled for 1 April 2028. National's separate promise to make participation compulsory from 1 July 2028 depends on re-election and later legislation. The two dates are close enough to blur together, but only the contribution-rate increase is law today.
Inland Revenue's KiwiSaver changes page sets out the 3.5% default that began on 1 April 2026 and the 4% default due on 1 April 2028. National's June 2026 announcement says a re-elected National Government would require workers to contribute from 1 July 2028 and pursue 6% each from employees and employers by 2032. The announcement is a party policy, not a statute. KiwiSaver membership remains voluntary; eligible new employees can still opt out under the current rules.
What is in force, and what is proposed?
| Date | Position on 25 September 2026 | What it changes |
|---|---|---|
| 1 April 2026 | In force | Default employee and matching employer contributions rose from 3% to 3.5%. |
| 1 April 2028 | Enacted future rate | The default rises to 4% for both, subject to the current temporary-rate-reduction rules. |
| 1 July 2028 | National election pledge | Membership would become compulsory for workers if National is re-elected and the necessary law passes. |
| By 2032 | National election pledge | A 6% employee and 6% employer default is the party's goal; the intervening rate schedule is not enacted. |
There is no lawful 5% compulsory rate for July 2028. Our 5% example below is only a sensitivity test. For someone who needs to stay at 3% after the 2026 increase, Inland Revenue permits a temporary rate reduction for 3 to 12 months; an employer may match the lower 3% while it applies. An ordinary savings suspension is different. For eligible members, it can last 3 months to a year under today's rules. National's stated intention to restrict future suspensions to hardship would also need legislation.
What a $75,000 paycheck shows
Assume Maia earns a $75,000 gross salary, with the employer contribution paid on top, a full-year government contribution, no student loan or other deductions, and the same salary through all three scenarios. The current income-tax brackets produce $14,720.50 of annual income tax, and the 2026-27 ACC earners' levy at 1.75% is $1,312.50. These are annual illustrations rather than a payroll quote: pay periods and tax codes can change withholding.
| Scenario | Employee contribution | Take-home after tax, ACC and KiwiSaver | Employer contribution after 30% ESCT | Total added to KiwiSaver, including $260.72 government contribution |
|---|---|---|---|---|
| Current 3.5% + 3.5% | $2,625 | $56,342 | $1,837.50 | $4,723.22 |
| Enacted 4% + 4% from April 2028 | $3,000 | $55,967 | $2,100 | $5,360.72 |
| Illustrative 5% + 5%, not a dated legal rate | $3,750 | $55,217 | $2,625 | $6,635.72 |
Annual take-home on a $75,000 salary
Relative to today's 3.5% baseline, the enacted 4% default moves $375 from annual take-home pay and adds $637.50 to the fund under these assumptions. The hypothetical 5% rate moves $1,125 from take-home and adds $1,912.50 to the fund. The employer amounts are smaller than the headline 3.5%, 4% or 5% of salary because ESCT is deducted first. The $260.72 government contribution applies only if Maia remains eligible and contributes at least $1,042.86 of her own money during the 1 July–30 June contribution year.
Annual KiwiSaver inflow for the same worker
Do not treat the difference in fund deposits as a guaranteed investment gain. KiwiSaver money is invested, its returns vary, and most withdrawals must wait until an allowed event. The short-term cash-flow question is how much of your pay you can commit while meeting current bills.
Why the ESCT calculation changes the match
The current ESCT thresholds are $0–$18,720 at 10.5%, $18,721–$64,200 at 17.5%, $64,201–$93,720 at 30%, $93,721–$216,000 at 33%, and above $216,000 at 39%. Inland Revenue's 2026–27 payroll specification sets those bands. The assessment generally uses the prior tax year's salary or wages plus gross employer superannuation contributions; a short employment history requires an estimate. One applicable ESCT rate applies to the employer contribution. It is not a set of progressive slices applied to that contribution.
With an unchanged previous-year salary and a 3.5% gross employer contribution, a $50,000 worker has $1,750 gross, $1,443.75 after 17.5% ESCT. Maia's $75,000 plus $2,625 lands in the 30% band, leaving $1,837.50. A $100,000 worker has $3,500 gross, $2,345 after 33% ESCT. A change near a threshold may give a different result, so check the employer's actual ESCT assessment rather than applying the worker's income-tax rate.
Employer 3.5% match after ESCT at three salaries
Read the total-remuneration clause before estimating net pay
Some contracts quote a fixed all-in remuneration package that includes the employer's gross KiwiSaver contribution. Employment New Zealand says employers and employees may negotiate this arrangement. The employer contribution must still be paid on top of the agreed gross pay, and it cannot push pay below the minimum wage. There is no enacted general ban on total-remuneration clauses, and National's compulsory-membership announcement does not itself create one.
If an $80,000 package consists solely of salary plus a 3.5% gross employer contribution, the agreed cash salary would be about $77,294.69 and the gross employer contribution about $2,705.31, before ESCT. Simply subtracting 3.5% of $80,000 from the package gives the wrong base because the percentage is calculated on salary, not on the package total. Actual agreements may include other items and require their own breakdown.
Check the exact gross salary in your agreement and payslip, the employer's KiwiSaver contribution before ESCT, and whether your salary was negotiated as base pay or all-in remuneration. Then use the KiwiSaver paycheck calculator as a scenario illustration, with its contribution choices labelled as policy assumptions where appropriate. The figures it generates are not a forecast of the election or a promise of investment returns.
What you can do before any election decision
If you are already a member, look at your contribution rate, any temporary reduction certificate and the next pay date on your payslip. If you are on a savings suspension, Inland Revenue's current rule says employer contributions usually stop unless your agreement provides otherwise; voluntary member payments can still preserve some government contribution if you qualify. If you are not a member, compare the current 3.5% deduction with your budget and the employer contribution available under your own employment terms. National's 2028 pledge is a reason to follow the legislation if it is introduced, not a reason to treat a 5% or 6% deduction as current law.
