Best Bank in NZ 2026: Compare Savings, Fees & Safety

You’re probably here because you’ve seen fees eat into your balance or heard that savings rates in New Zealand are all over the place. This comparison uses current 2026 data from each bank’s official rates pages and independent trackers to help you pick the right fit.

Big 4 banks in New Zealand: ANZ, ASB, BNZ, Westpac ·
Total licensed banks in NZ: 27 (Reserve Bank of New Zealand) ·
Biggest bank by assets: ANZ (over $170 billion NZD) ·
Highest savings rate (June 2026): Heartland 90-day Notice Saver (3.20% p.a.) ·
Safest credit rating: AA- (ANZ, ASB, BNZ, Westpac)

Here are the key facts that shape the banking landscape in New Zealand.

Six data points, one pattern: no single bank leads in every category. The best choice depends on whether you prioritise rate, flexibility, or branch access.

Which bank in New Zealand is the best?

There is no single “best” bank — the right pick depends on what you value: savings yield, low fees, business features, safety, or the ability to open an account as a non-resident. The Big Four (ANZ, ASB, BNZ, Westpac) dominate branch networks and ATM access, but smaller banks like Heartland, Kiwibank, and The Co-operative often beat them on interest rates and fees.

Criteria used: savings rates, fees, safety, business features, non-resident access

• Savings rates: Heartland Bank leads on-call at 2.05% and notice savers at up to 3.20%, according to its official rates page.
• Fees: Kiwibank charges $0 monthly on its everyday account (Kiwibank comparison page). The Co-operative Bank and TSB also offer fee-free accounts.
• Business banking: ASB’s digital tools and ANZ’s branch density (450+ ATMs) give them an edge.
• Safety: The Big Four all hold AA- from S&P, the highest among NZ banks.
• Non-resident accounts: ANZ explicitly offers non-resident accounts; others require NZ residency or a visa.

The implication: matching your priority to the bank’s strength is the only way to find your best fit.

What are the big 4 banks in NZ?

The Big Four — ANZ, ASB, BNZ, and Westpac — hold roughly 85–90% of all banking assets in New Zealand, per Reserve Bank of New Zealand data. All are Australian-owned except BNZ (owned by NAB). They offer the widest branch and ATM networks, but their standard savings rates are lower than smaller competitors.

ANZ

ANZ is the largest bank by assets (~$170 billion NZD). Its ANZ Online savings account pays just 0.40% p.a. (from Interest.co.nz comparison). For premium bonuses, the Serious Saver offers 4.60% but requires no withdrawals and a $20+ monthly deposit. ANZ has over 450 ATMs.

ASB

ASB’s Savings On Call account pays only 0.10% p.a., but its Save account bonus rate reaches 4.75% with conditions. ASB has a strong digital platform and is rated AA- by S&P.

Bank of New Zealand (BNZ)

BNZ’s Rapid Save account earns 1.70% p.a. with one free withdrawal per month ($3 thereafter). No monthly fee. BNZ is owned by NAB and holds AA- rating.

Westpac

Westpac’s no-fuss savings account pays 1.35% p.a. Its 32 Day Notice Saver offers 2.70% p.a. with no fees (Canstar roundup). Westpac is also AA- rated but charges clearance fees in some cases.

The implication: Big Four banks win on safety and convenience, but their everyday savings rates are uncompetitive. You’ll need to use a bonus or notice saver to get a decent return.

Is ASB or ANZ better?

This is the most common comparison. Both are AA- rated, both have large ATM networks, and both offer similar home loan products. The differences emerge in savings rates and business features.

Six points of comparison, one takeaway: ASB has a slightly better bonus savings rate, while ANZ has more ATMs. For most customers, the difference is marginal.

The catch: both banks’ standard rates are near zero. Unless you jump through bonus hoops, your savings will barely grow. A separate high-interest account at Heartland or Rabobank may make more sense.

Which NZ bank has the best savings account?

For pure interest on an on-call account, Heartland’s Digital Saver at 2.05% p.a. leads among banks with a New Zealand banking license. If you can lock money away for 90 days, Heartland’s 90 Day Notice Saver pays 3.20% p.a. Westpac’s 32 Day Notice Saver pays 2.70% p.a., and Kiwibank’s Notice Saver (90 days) pays 2.35% (Interest.co.nz).

• Best on-call: Heartland Digital Saver – 2.05% p.a., no fees, no minimum deposit (Canstar 2026 roundup)
• Best notice saver: Heartland 90 Day – 3.20% p.a. (requires 90 days notice for withdrawal)
• Best from Big Four with notice: Westpac 32 Day Notice Saver – 2.70% p.a.

What this means: if you’re after maximum interest, Heartland is the clear winner. But for everyday flexibility, Kiwibank’s $0 fee account combined with a separate notice saver could be a smarter strategy.

Which NZ bank has the lowest fees?

Kiwibank, The Co-operative Bank, and TSB all offer everyday accounts with zero monthly fee. Kiwibank charges no transaction fees for customers under 19, over 65, or for non-profits. BNZ’s Rapid Save also has no monthly fee but charges $3 per withdrawal beyond the first free one.

• Kiwibank: $0 monthly, $0 transaction fees for eligible customers (Kiwibank)
• The Co-operative Bank: Classic account – $0 monthly, $0 transaction fees
• TSB: Everyday Account – $0 monthly fee (limits apply)
• BNZ YouMoney: $0 monthly, unlimited transactions

The Big Four (except BNZ) typically charge $5–$10 per month unless you maintain a minimum balance. ANZ and ASB apply a $5 fee if the balance falls below $5,000.

The pattern: smaller banks and Kiwibank eliminate monthly fees entirely. If you keep a low balance, they save you $60–$120 per year compared to ANZ or ASB.

Which is the safest bank in NZ?

All four Big Four banks hold an AA- credit rating from S&P, the highest available among New Zealand banks. Kiwibank is rated A+. Heartland is rated A-, Rabobank A. The Reserve Bank of New Zealand regulates all licensed banks under the Banking Prudential Supervision Act. New Zealand does not have a government deposit guarantee for all banks (unlike Australia’s $250,000 scheme), so the bank’s own financial strength matters.

• Highest safety: ANZ, ASB, BNZ, Westpac – AA- (S&P)
• Strong: Kiwibank – A+ (S&P)
• Investment grade: Heartland – A-, Rabobank – A

Why this matters: if you’re saving over $100,000, stick to the Big Four or Kiwibank. For smaller amounts, the higher rates from Heartland or Rabobank are likely worth the incremental risk.

Which bank is best for businesses in NZ?

ASB and ANZ dominate business banking. ASB’s digital tools include Xero integration and fast loan approvals. ANZ offers the largest branch network, which matters for cash handling. BNZ is popular with startups due to its flexible business packages. Westpac also serves businesses but has fewer branches.

• Best for digital: ASB – integrates with accounting software, strong mobile app (ASB business banking page)
• Best for branch access: ANZ – 450+ ATMs, nationwide branches (ANZ)
• Best for startups: BNZ – low fees for small businesses, free business banking packages

The implication: business owners should match their needs to each bank’s strength. Digital-first operations lean ASB; cash-heavy businesses prefer ANZ; early-stage companies benefit from BNZ.

Which bank is best for non-residents?

ANZ explicitly offers non-resident bank accounts with a dedicated application process. Most other banks require New Zealand residency or a valid visa. Kiwibank allows account opening for temporary visa holders but not for pure non-residents. For international students, ASB and BNZ offer student accounts with no monthly fees.

• Best for non-residents: ANZ – dedicated accounts, online application
• Best for international students: ASB and BNZ – student accounts with fee waivers
• Best for remote opening: Wise (not a bank but offers NZD multi-currency account)

The pattern: ANZ is the clear leader for non-residents. If you’re moving to New Zealand soon, opening an ANZ account before arrival saves time.

The implication: ANZ remains the most accessible option for those without current NZ residency.

“Heartland Bank’s Digital Saver and 90 Day Notice Saver consistently top our savings comparison tables in 2026 due to their no-fee structure and competitive rates.”

— Canstar NZ (award and ratings body)

“If you don’t want to pay monthly account fees, Kiwibank is the most accessible fee-free option in New Zealand — and their customer service is decent too.”

— Reddit user, r/PersonalFinanceNZ (community recommendations)

“Rates are current as at Wednesday, 1 July 2026. Our notice saver products give you higher interest in exchange for a short notice period.”

— Heartland Bank (official rates page)

“BNZ Rapid Save is a simple, no-monthly-fee account that earns interest on every dollar. The only catch is a $3 fee after your first withdrawal each month.”

— BNZ (product description)

For New Zealanders in 2026, the choice comes down to a single trade-off: rate versus liquidity versus safety. If you can lock cash away for 90 days, Heartland’s 3.20% is the best return. If you need instant access, Heartland Digital Saver at 2.05% beats every Big Four on-call account. For fee-free everyday banking, Kiwibank is the winner. And for non-residents, ANZ is the only Big Four bank with a streamlined process.

For the immigrant or international student planning to settle in New Zealand, the clear path is: open an ANZ non-resident account before arrival, then later switch to Kiwibank for fees and Heartland for savings — or accept the lower Big Four rates for the safety of AA- and nationwide branches.

For a detailed breakdown of current NZ bank interest rates, see the latest comparison across major lenders.

Frequently asked questions