KiwiSaver Fees vs Performance NZ (2026): What Actually Grows Your Balance

Low fees or high performance? Using real net-of-fees KiwiSaver data to settle the debate and weigh both for your timeframe.

There are two common views on KiwiSaver. One says fees are everything — keep them low and you win. The other says fees are irrelevant — chase the fund with the best returns and pay whatever it costs. Both are half right, and the half they get wrong is the half that costs money.

This guide works through it using real New Zealand numbers: actual fund fees, actual net-of-fees returns, and the one rule that makes the whole debate easier to think about.

TL;DR: Fees are guaranteed; performance is not. The number that matters is your net-of-fees return — what you keep after costs. Across the sector, the ratio of total fees to total funds under management has fallen to 0.71% (an industry-wide aggregate, not a per-fund benchmark), yet low-fee passive growth funds such as Simplicity (0.25%) and Kernel (0.25%) charge far less and still posted strong net returns. Match fee tolerance to your timeframe. ¹⁸¹⁰

The trade-off everyone gets wrong: fees vs returns

The mistake is treating fees and performance as a straight either/or — pick the cheap fund or pick the strong fund. They are not opposites. A fund can be cheap and strong, or expensive and weak. Fee and return are two separate dials, and you read them together.

The reason the debate persists is that the two numbers behave completely differently. One is fixed and known in advance. The other is a guess about the future dressed up as a track record. Once you understand that asymmetry, the "which matters more" question almost answers itself.

Why are fees guaranteed but performance is not?

A fee is a contract. If a fund charges 1% p.a., you pay it whether markets rise 20% or fall 20%. It comes out every year, in good years and bad, regardless of what the fund does for you. For context, the sector-wide ratio of total fees to total funds under management currently sits at 0.71% — an aggregate across all providers, not the fee any one fund charges. ⁸

Performance is the opposite. Last year's 10% return tells you what happened, not what will happen. Markets, manager skill, and timing all move year to year. No provider can contract to deliver a return, and the ones who imply they can are the ones to watch most closely.

That asymmetry is the whole argument. You are comparing a cost you will definitely pay against a benefit you might receive. New Zealand members paid $868.5 million in KiwiSaver fees in the latest reporting year — a guaranteed transfer from members to providers, earned or not. ⁹

A single strong year can be misleading. A fund that returned 11% last year might have averaged 6% over the prior three years — below a cheaper fund in the same risk category — while charging the same fee every one of those years.

Do higher fees buy better performance? (the evidence)

The NZ answer: higher fees do not reliably buy higher net returns. Some active managers beat the market in some periods. Many do not, and across a full cycle the extra fee is a constant drag the manager has to overcome before you see any advantage.

Look at the actual numbers. Low-fee passive growth funds in New Zealand charge a fraction of the active managers, and they are not delivering scraps in return:

Two things jump out. First, the gap between a low-fee passive growth fund (~0.25%) and a typical active growth fund (around 1.0–1.2%) is roughly three-quarters of a percent or more every year. Second, that passive Simplicity fund returned 10.06% in the 12 months to 31 March 2026 — a perfectly respectable growth number with a fee a quarter the size of the active alternatives. Note that the 10.06% figure is reported after both fees and tax (at the 28% PIR) have been deducted, so read it alongside other after-fees figures on a like-for-like basis. ¹⁰¹¹¹²

The sector-wide picture backs this up. The FMA reports the ratio of total fees to total funds under management has fallen from roughly 1.10% to 0.71% since 2012 — partly because low-fee index providers grew their share and dragged the average down. Members are voting with their balances. Again, that 0.71% is an industry aggregate, not a target fee for an individual fund. ⁸

A higher fee is only worth paying if the manager reliably delivers more after that fee. "Reliably" is doing a lot of work in that sentence.

Active vs passive: what are you really paying for?

It helps to know what the extra fee buys. A passive (index) fund simply tracks a market — global shares, NZ shares, bonds — for the lowest possible cost. There is no stock-picking, so the fee is low (Simplicity 0.25%, Kernel 0.25%). ¹⁰¹¹

An active manager — Milford, Generate, Fisher Funds, ANZ — employs analysts and portfolio managers to try to beat the market by choosing what to hold and when. That research costs money, which is why active growth fees commonly sit around 1.0–1.2% p.a. (Fisher Funds Growth, for example, runs at roughly 1.10%). You are paying for the attempt to outperform. ¹³

Neither is "right." A genuinely skilled active manager can earn its fee over a cycle, as our Generate vs Milford comparison sets out. The point is that the higher fee is a bet on skill, and you should know you are placing it.

Why should returns always be read net of fees?

Here is the rule that makes everything simpler: always read returns net of fees. Net-of-fees means the return after the fund's fees have already been deducted — the number that actually lands in your account.

Every return on Sorted's Smart Investor and in FMA fund updates is already reported net of fees. Simplicity Growth's 10.06% for the year to 31 March 2026 is what members earned after the 0.25% fee (and tax at the 28% PIR) was taken out — not a headline you then subtract costs from. ¹²

This single habit kills most of the fees-vs-performance confusion. You do not weigh a gross return against a fee. You compare two net returns and pick the better one for your risk level. The fee is already baked in. A fund advertising a big gross number and a separate fee is doing two-step maths that hides the only figure you care about.

So the practical test is straightforward: of two funds at the same risk level, which has the higher net-of-fees return over the longest period available? That fund wins — and the fee has already been accounted for.

How do I weigh fees and performance for MY timeframe?

Your timeframe changes the maths because fees compound. A small annual fee, charged every year for decades, drags on a balance that would otherwise be growing. The longer your money is invested, the more a fee difference matters — and the less any single year's performance does.

Use this as a starting frame, then get it checked against your actual situation:

The everyday levers still matter more than fund choice for most people. Make sure you contribute at least $1,042.86 across the KiwiSaver year (1 July–30 June) to claim the full $260.72 government contribution, now paid at 25c per $1 since Budget 2025 (and not paid at all if you earn over $180,000). And check you are on the right PIR — 10.5% / 17.5% / 28% depending on income — because the wrong PIR quietly costs more than many fee differences. ¹²³⁴⁷

If you want this mapped to your own balance and timeframe, our KiwiSaver fund comparison lines up fees against net returns side by side.

Your fees-vs-performance checklist

1. Find your fund's total annual fee. It's on your provider's PDS and on Sorted's Smart Investor. A growth fund well above 1% needs a clear reason.

2. Read every return net of fees. Compare net to net — never gross return against a separate fee.

3. Compare like with like. Only stack growth against growth, balanced against balanced. A cheap conservative fund is not "beating" an expensive growth fund.

4. Look at the longest period available, not last year. One strong year proves nothing.

5. Weight by your timeframe. Closer to needing the money, the more fees and risk level dominate.

6. If you're paying 1%+, demand evidence the manager has beaten a cheaper index fund after fees over a full cycle.

7. Fix the free wins first — full government contribution, correct PIR, right contribution rate (rising to 3.5% in 2026 and 4% by 2028). ⁵⁶

8. Get an independent second opinion before switching, ideally from an adviser who does not sell an in-house product.

Getting advice

Some members pay over 1% a year for a fund trailing a low-fee index alternative in the same risk band; others sit in a cheap fund but the wrong risk profile for their timeframe. The fee is never the whole story, and never irrelevant either. An independent review can identify which problem applies to you.

Book a free KiwiSaver review with a Smiths adviser. Book a review

Frequently asked questions

Are low fees always better for KiwiSaver? Not automatically, but they are the only certain part of the equation. A low fee is a guaranteed saving; outperformance is a hope. A higher fee is worth paying only if the fund reliably delivers more after fees over a full cycle. Compare net-of-fees returns at the same risk level and let that decide. ⁸

What is a "good" KiwiSaver fee in 2026? There is no single benchmark, and the often-quoted 0.71% is a sector-wide aggregate (total fees divided by total funds under management), not a target for an individual fund. Low-fee passive growth funds like Simplicity (0.25%) and Kernel core index (0.25%) sit well below that aggregate. If you're paying around 1% or more for a growth fund, you should be able to point to the extra value you're getting for it. ⁸¹⁰¹¹

Do KiwiSaver returns already have fees taken out? Yes. Returns on Sorted's Smart Investor and in FMA fund updates are reported net of fees. Simplicity Growth's 10.06% for the year to 31 March 2026 is the figure members actually earned after fees and tax (at the 28% PIR). You don't subtract the fee again. ¹²

Is active management worth the higher fee? Sometimes. A genuinely skilled active manager can beat the market after fees, but many don't over a full cycle, and the higher fee is charged every year regardless. The extra fee is a bet on manager skill — make it knowingly, and check the after-fees track record first.

Does the government contribution change matter more than fees? For most people, yes. Contributing at least $1,042.86 a year secures the full $260.72 government contribution — a return no fund fee can match. Lock in the free wins (full government contribution, correct PIR, right contribution rate) before fine-tuning fund choice. ²³

What PIR should I be on? Each rate uses two tests. You're on 10.5% if your total income — your taxable income plus your PIE (e.g. KiwiSaver) income — was $15,600 or less in either of the last two years. You're on 17.5% if your taxable income was $53,500 or less and your combined taxable-plus-PIE income was $78,100 or less. If neither of those applies — that is, taxable income over $53,500 or combined income over $78,100 — your PIR is 28%. The wrong PIR can quietly cost you more than a fee difference, so it's worth getting right. ⁷

General information, not personalised financial advice. Seek advice tailored to your situation before acting. Craig Smith Business Services Ltd (FSP712931), trading as Smiths Financial, holds a Class 2 licence issued by the Financial Markets Authority and is a member of the Financial Dispute Resolution Service (FDRS). Written by Henry Smith, Financial Adviser; reviewed by Craig Smith, Principal Adviser. Last reviewed 16 June 2026.