Choosing the right KiwiSaver provider is nearly as important as choosing the right fund. Different providers charge different fees, offer different fund options, and have different track records. With close to $145 billion now invested across KiwiSaver (Morningstar, December 2025), even small fee differences add up to real money.
Major Providers Comparison (Indicative Fees)
| Provider | Total Fee (Balanced) | Funds Offered | Notes |
|---|---|---|---|
| ANZ | ~0.69% | Conservative, Moderate, Balanced, Growth, Balanced Growth, Life Cycle | Largest provider. Life-cycle option adjusts automatically. App-based management. |
| ASB | ~0.59% | Conservative, Balanced, Growth, Socially Responsible, Cash, Life Cycle | Competitive fees. Strong digital experience. Socially responsible fund available. |
| Westpac | ~0.62% | Conservative, Balanced, Growth, High Growth, Life Cycle | Good life-cycle options. Lower fees for larger balances in some funds. |
| Milford | ~1.25% | Conservative, Balanced, Growth, Active Growth | Active management — higher fees but historically strong returns. |
| Simplicity | ~0.31% | Conservative, Balanced, Growth | Among the lowest fees in the market. Not-for-profit structure. |
| Generate | ~0.54% | Conservative, Balanced, Growth, Socially Responsible | More than $9 billion under management and 190,000+ members (March 2026). |
| Kernel | ~0.45% | Conservative, Balanced, Growth, Global 100 | Low-cost passive options. Custom portfolios available. |
Fees change frequently — always check the provider's current disclosure statement before switching.
What to Look For
Fees
Even a 0.5% difference in fees can mean tens of thousands of dollars less at retirement. Simplicity and Kernel lead on low fees. Bank providers (ANZ, ASB, Westpac) sit mid-range. Active managers like Milford charge more but may justify it with higher returns. Look at the total fee (member fee + fund expenses), not just the headline percentage.
Fund Performance
Past performance is not a guarantee of future returns, but look for consistent long-term (5–10 year) returns. Morningstar's quarterly KiwiSaver surveys (published in major NZ media) rank funds after fees — check whether a fund has beaten its category average over a full market cycle, not just one strong year.
Features
Consider: app quality, customer service, ease of switching, socially responsible investing options, and whether they offer life-cycle funds.
How to Compare Providers Properly
- Pick the fund type you need first (see choosing a fund) — comparing "balanced" across providers is only meaningful within the same category.
- Compare total fees from each provider's latest fund updates (SIFT/SQE documents).
- Compare after-fee, before-tax returns over 5 and 10 years from Morningstar data.
- Check features that matter to you (app, ethical options, life-cycle funds).
Common Mistakes
- Choosing by brand loyalty — your bank's KiwiSaver fund is not necessarily the best or cheapest.
- Comparing funds across different risk categories — a growth fund will usually beat a conservative fund in returns; that's not a fair comparison.
- Ignoring fees below the headline — small member fees and buy/sell spreads still compound.
- Never reviewing your provider — even a once-a-decade review can save thousands.
Switching Providers
You can switch KiwiSaver providers at any time, limited to once per 12-month period. See our full guide on switching providers.
The Real Cost of Fees
Fee differences look small on paper and enormous at retirement. On a $50,000 balance earning 6% before fees, a 1.0% fee leaves you with roughly $239,000 after 30 years; a 0.5% fee leaves roughly $287,000 — a difference of about $48,000 for doing nothing at all. Multiply that across the ~$145 billion in KiwiSaver and you can see why fee pressure has reshaped the industry, with providers like Simplicity and Kernel forcing the big banks to cut their own fees.
Where to Check Current Fees and Performance
- Provider fund updates (SIFT/SQE documents) — the official, audited fee and return figures, published quarterly on each provider's website
- Morningstar KiwiSaver Survey — quarterly rankings of after-fee returns by category, widely reported in NZ media
- Sorted.org.nz — the Government's free comparison tool, including fees and a fund finder
- Your provider's app or statement — check what you personally pay each quarter
Revisit your provider choice every couple of years — fees and features change, and switching is free (once per 12 months).
Banks vs Specialist Providers
Bank providers (ANZ, ASB, Westpac) win on convenience — your KiwiSaver sits alongside your banking app, and transfers between bank products are seamless. Specialist providers (Simplicity, Kernel, Generate, Milford) usually win on fees or performance. There's no right answer; there's only the right answer for you. If you value app integration, a bank fund may beat a cheaper specialist fund in practice — because you'll actually engage with it.