New Zealand has over 20 KiwiSaver providers ranging from the major banks to specialist boutique managers. Choosing the right provider — particularly for the long run — can make a substantial difference to your retirement balance, primarily through fees and fund quality.
What Separates Good from Bad Providers
The key metrics to compare:
| Factor | Why it matters |
|---|---|
| Management fee (% p.a.) | Compounds over decades — 1% vs 0.3% on $200k = ~$200k difference at 65 |
| After-fee performance | Gross returns don’t tell the full story; high-fee active funds must outperform |
| Fund range | Do they offer the fund type you need (growth, ethical, aggressive)? |
| Default provider status | Government-vetted; doesn’t mean best, but a baseline assurance |
| Digital tools | Easy balance checking, contribution changes, fund switching |
Fee Comparison — Growth Funds
| Provider | Growth fund annual fee (approx.) |
|---|---|
| Kernel | ~0.25% |
| Simplicity | ~0.31% |
| Booster | ~0.50% |
| Mercer | ~0.60% |
| SuperLife | ~0.60% |
| BNZ | ~0.65% |
| Kiwibank/Summer | ~0.65% |
| Westpac | ~0.85% |
| AMP | ~0.85% |
| Generate | ~1.05% |
| Milford | ~1.05% |
| ANZ | ~1.06% |
| ASB | ~0.96% |
| Fisher Funds | ~1.00–1.30% |
| NZ Funds | ~1.50%+ |
Fees approximate. Confirm in current PDS before switching.
Provider Reviews
Bank Providers
- ANZ KiwiSaver Review 2026
- ASB KiwiSaver Review 2026
- BNZ KiwiSaver Review 2026
- Westpac KiwiSaver Review 2026
- Kiwibank KiwiSaver Review
- SBS KiwiSaver Review
- Craigs KiwiSaver Review
Independent & Specialist Providers
- Simplicity KiwiSaver Review
- Milford KiwiSaver Review 2026
- Fisher Funds KiwiSaver Review
- Booster KiwiSaver Review 2026
- Kernel KiwiSaver Review
- SuperLife KiwiSaver Review
- Generate KiwiSaver Review
- Mercer KiwiSaver Review 2026
- AMP KiwiSaver Review 2026
- NZ Funds KiwiSaver Review
- Koura KiwiSaver Review
- Summer KiwiSaver Review
- Juno KiwiSaver Review
- Pathfinder KiwiSaver Review (Ethical)
- Amanah KiwiSaver Review (Islamic-Compliant)
Guides
- Best KiwiSaver Providers NZ (2026)
- Switching KiwiSaver Providers Guide
- Default KiwiSaver Fund Explained