Term Deposit Rates NZ 2026: How They Work and How to Earn More

If you have cash sitting in a low-interest account, term deposits are worth a look. A term deposit is one of the simplest, most transparent savings tools there is: you lock a lump sum away for a fixed period and, in return, the bank guarantees both your interest rate and your principal. This guide explains how New Zealand term deposit rates work, how to compare providers, the tax rules, whether your money is protected, and practical ways to earn a little more. It is general information, not financial advice.

How term deposits and their rates work

You leave a lump sum with a bank or licensed deposit taker for a set period — commonly 30 days to five years — and receive a fixed interest rate for the whole term. At maturity you get your principal back plus the interest earned. Because the rate is locked, you always know exactly what you will earn, which is the main appeal for savers who value certainty over the chance of a higher (but uncertain) return.

Rates are anchored to the Reserve Bank’s Official Cash Rate (OCR). When the OCR rises, banks’ funding costs go up and deposit rates tend to follow; when it falls, deposit rates ease, usually with a short lag. Banks also weigh competition, their own lending needs and global funding markets. This is why term deposits look most attractive when rates are elevated — locking in a good rate before the OCR falls means you keep earning at the higher rate even as newer deposits pay less. Our guide to New Zealand interest rates tracks where the OCR sits now.

Comparing providers

Finding the best rate takes more than a glance at your own bank’s site. Rates change often — sometimes weekly — and the gap between the highest and lowest across institutions can be 0.3–0.6 percentage points or more. On a $50,000 deposit over 12 months, that is roughly $150–$300 in extra after-tax interest, so it is worth 20 minutes of comparison.

The most reliable New Zealand aggregator is interest.co.nz, which publishes daily-updated rates from banks and deposit takers in one table; Consumer NZ also runs regular banking comparisons. A few things to keep in mind: the highest rate is not always on the longest term; minimum deposits are usually $1,000–$5,000 (sometimes more); interest may be paid at maturity, monthly or annually; and many banks auto-roll your deposit into a new term at maturity unless you instruct otherwise.

One point that is widely muddled is worth correcting: the big four (ANZ, ASB, BNZ and Westpac) do not always lead on rates, and smaller registered banks such as Kiwibank, TSB, SBS Bank, Heartland Bank and The Co-operative Bank often pay more. These are all registered banks — not “non-bank deposit takers.” True non-bank deposit takers are finance companies, credit unions and building societies, which can pay higher rates again but carry their own risk profile (see safety, below). For bank-specific detail, see our guides to Westpac term deposit rates, TSB’s PIE term deposits and BNZ term deposits.

Modelling your return

Before committing, use a term deposit calculator to see what you will actually earn after tax. Enter your principal, the gross rate, the term, the interest frequency and your RWT rate, and it will show gross interest, tax deducted and net interest.

A worked example: $30,000 for 12 months at 5.00% p.a., interest paid at maturity, RWT rate 17.5%. Gross interest is $1,500; RWT of 17.5% takes $262.50; net interest is $1,237.50, for $31,237.50 at maturity. If a competitor offered 5.30% on the same terms, your net interest would be about $1,311 — roughly $73.50 more, which matters more on larger sums and longer terms. Sorted’s free savings calculator handles this well; see sorted.org.nz. If you plan to reinvest the interest, our explainer on how compound interest works shows how those returns build over time.

Tax on your interest

Interest is taxable income, and banks deduct Resident Withholding Tax (RWT) at source before crediting it — so in most cases you do not have to do anything extra, but you must give your bank the correct rate. You can read the rules on Inland Revenue’s guide to using the right RWT rate.

The key point the older guides get wrong: if you provide your IRD number but do not nominate a rate, the default is 33%; if you do not provide your IRD number at all, RWT is deducted at the 45% no-notification rate. Choose the rate that matches your marginal tax rate (10.5%, 17.5%, 30%, 33% or 39%) to avoid a bill or an overpayment at year end — and if you have been overtaxed, you square it up through your income tax return. Higher earners can also consider a PIE term deposit, where the tax rate (the PIR) is capped at 28%. Our tax rates guide sets out the brackets in full.

Is your money protected?

This has genuinely changed. Since 1 July 2025, New Zealand has a Depositor Compensation Scheme (DCS), run by the Reserve Bank, which protects up to $100,000 per depositor, per licensed deposit taker if that institution fails. Importantly, the DCS covers licensed banks and licensed non-bank deposit takers alike (credit unions, building societies and finance companies that are licensed), so the protection is the same up to $100,000 regardless of the institution’s size. The scheme is explained at rbnz.govt.nz/dcs.

Two practical implications: if you have more than $100,000, spreading it across two institutions keeps the full amount protected; and above the cap — or with an unlicensed entity — an institution’s credit rating and disclosure statement still matter, so check them before investing a large sum with a smaller or non-bank provider.

Term deposits vs the alternatives

Term deposits are not the only home for surplus cash. On-call savings are fully liquid but pay less and the rate can change at any time — best for an emergency fund, and worth comparing against a high-interest savings account. KiwiSaver can return more over the long run but is locked until 65 (with limited exceptions), so it is not for short-to-medium-term money; see our KiwiSaver guide. Government bonds offer sovereign-quality credit but their value can move before maturity. Managed or PIE funds offer diversification and potentially higher returns but carry investment risk. And if you have a home loan, a mortgage offset account effectively earns your mortgage rate on your savings, which often beats a term deposit. For most savers with a one-to-five-year horizon who want certainty and no investment risk, a term deposit remains a practical choice.

Practical next steps

Compare across several institutions rather than defaulting to your own bank; confirm the minimum deposit and interest-payment structure; give your correct RWT rate (and your IRD number, to avoid the 45% rate); and diarise your maturity date so you are not auto-rolled into a weaker rate. For a significant sum, consider laddering across two or three terms — splitting your money so a portion matures regularly — which balances return against flexibility and lets you reinvest at the best available rate as each tranche matures.

Disclaimer

This article is general information about term deposits in New Zealand — not financial or tax advice, and not a recommendation of any institution or product. Interest rates, tax rules and deposit-protection details change; the figures here reflect 2026 and should be confirmed with the institution, Inland Revenue and the Reserve Bank before you act. For free, independent money guidance, Sorted (run by Te Ara Ahunga Ora Retirement Commission) and Consumer NZ are good starting points.

Frequently asked questions

How are term deposit rates set in New Zealand?

They are anchored to the Reserve Bank’s Official Cash Rate, plus competition, banks’ lending needs and global funding costs. When the OCR rises, deposit rates tend to rise; when it falls, they ease, usually with a short lag.

Do the big banks offer the best term deposit rates?

Not always. Smaller registered banks — such as Kiwibank, TSB, SBS, Heartland and The Co-operative Bank — often pay more than ANZ, ASB, BNZ and Westpac, and licensed non-bank deposit takers can pay more again. Compare current rates before choosing.

How is term deposit interest taxed?

Interest is taxable, and banks deduct Resident Withholding Tax at source. Choose the rate matching your income (10.5% to 39%). If you give your IRD number but no rate, the default is 33%; if you do not give your IRD number, it is 45%. Higher earners can consider a PIE term deposit, taxed at a PIR capped at 28%.

Is my term deposit protected if the bank fails?

Yes, up to a point. Since 1 July 2025 the Depositor Compensation Scheme protects up to $100,000 per depositor, per licensed deposit taker — covering banks and licensed non-bank deposit takers alike. Spread more than $100,000 across institutions to keep it all protected.

Can I get my money out early?

Usually, but breaking a term deposit early typically reduces your interest. The big four Australian-owned banks (ANZ, ASB, BNZ and Westpac) generally require about 31 days’ notice to release funds early, except in hardship, while some others such as Kiwibank, TSB and SBS have no fixed notice period. Check the early-withdrawal terms before you commit.