KiwiSaver Calculator
The KiwiSaver Calculator projects your retirement balance considering employee contributions (3–10%), employer contributions (minimum 3%), the annual government Member Tax Credit (up to $521.43), and compound investment growth.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
KiwiSaver Calculator
Project Your KiwiSaver Balance at Retirement
📐 Formula & Method
KiwiSaver Growth
The government MTC matches 50c per $1 contributed by the member (50% of employee contribution up to $1,042.86/year = max $521.43 MTC).
📋 How to Use
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1
Enter your current age and KiwiSaver balance.
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2
Enter your salary and contribution rates.
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3
Enable or disable the government Member Tax Credit.
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4
See projected balance at 65 and estimated weekly income.
KiwiSaver — New Zealand's Retirement Savings Scheme
KiwiSaver is a voluntary workplace-based retirement savings scheme. Employees are automatically enrolled when starting a new job but can opt out within the first 56 days. The government contributes up to $521.43 per year (Member Tax Credit) for working members who contribute at least $1,042.86.
KiwiSaver funds can be accessed at age 65, or earlier to purchase a first home (after 3 years' membership) or in cases of significant financial hardship.
🔬 Methodology & Accuracy
Formula: Uses the standard mathematical formula shown in the Formula & Method section above. All computations run client-side in your browser — no data is sent to our servers.
Data sources: Tax bands, contribution limits and regulatory rates are taken from official US (IRS, SSA) and UK (HMRC, gov.uk) publications for the current tax year, and updated when bands change.
Last reviewed: July 2024 · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.