KiwiSaver Calculator 2026
Calculate KiwiSaver contributions per IRD rules: employee 3%/4%/6%/8%/10% of gross wages, employer minimum 3% match (less employer superannuation contribution tax ESCT), Government Member Tax Credit (MTC) up to $521.43/year for $1,042.86 contributed by member. Projects long-term balance with returns.
KiwiSaver Basics 2026
Compulsory under Inland Revenue (IRD) rules for new employees aged 18-65 unless opt out within 8 weeks. Choose contribution rate 3%, 4%, 6%, 8%, or 10% of gross wages. Employer matches minimum 3% (most match exactly 3%; some 4-6% as benefit). Employer contribution taxed via ESCT (Employer Superannuation Contribution Tax) at your marginal rate — net to fund.
Member Tax Credit
Government MTC: 50c per $1 contributed, capped at $521.43/year for $1,042.86 of member contributions (1 July - 30 June year). Available to members 18+ until eligible for NZ Super (65). Contribute the full $1,042.86 to maximize. Self-employed/unemployed must contribute manually (no employer deduction); 'Contributions Holiday' suspends contributions for up to 1 year.
Withdrawal Rules
Funds locked until 65 (NZ Super age) — exceptions: first-home withdrawal (after 3 years membership), significant financial hardship, serious illness, permanent emigration (after 1 year overseas). First-home withdrawal: can withdraw all but $1,000 minimum balance. First HomeStart Grant (separate, from Kainga Ora) adds $1K-$10K depending on years saving + region.
Fund Selection Impact
Returns vary widely by fund type: Default fund (balanced, ~5-6% post-fee long-term return), conservative (~3-4%), growth (~6-8%). Fees matter — high-fee active funds (1.0%+) can cost $50K-$100K over 30 years vs low-fee passive (0.30%). FMA publishes quarterly fund returns. Comparison: morningstar.com, sorted.org.nz/kiwisaver.
Sources: NZ Inland Revenue Department KiwiSaver Guide, Kainga Ora First Home Buyer info, FMA Fund Performance Reports. Last updated: May 2026.