A 1% yearly fee takes about a quarter of what a portfolio would have grown to in 30 years.

Investment costs are quoted as small yearly percentages, which is exactly why they are underestimated. A fee is taken every year from the whole balance, not from the gain, and the money it takes never compounds for you again. The US Securities and Exchange Commission illustrates it with $100,000 growing at 4% a year for 20 years: with ongoing fees of 0.25% it ends at about $208,000, with 0.50% about $198,000, and with 1% about $179,000¹. Over the 30 or 40 years a financial independence plan runs, the gap is larger still.

The arithmetic: a fee compounds like a return

The simplest way to see it is to take one sum, one market return and change only the yearly charge. The table below invests 100,000 once and lets it grow for 30 years at the same steady market return before costs; each year’s charge is taken off that year’s return, and nothing else changes.

Two things stand out. The damage is not proportional to the fee: doubling the charge from one point to two more than doubles the money lost, because each year’s loss also loses its own future growth. And the share lost depends on time, not on the size of the portfolio — the same charge takes the same fraction of a small balance and a large one.

Measured against the real gain rather than the balance, a fee looks larger again. The SEC’s own worked example shows the gap between a 0.25% and a 1% fund widening every year, reaching roughly $29,000 on the original $100,000 after 20 years¹. If a portfolio earns 7% and prices rise 3%, a 1% charge takes about a quarter of the 4% real gain — the part that actually raises your standard of living².

What funds charge now, and how far costs have fallen

The Investment Company Institute’s annual cost study shows the asset-weighted average expense ratio of US equity mutual funds falling from 1.04% in 1996 to 0.40% in 2025, and bond funds from 0.84% to 0.36%³. Actively managed equity funds averaged 0.64% in 2025, against 0.05% for index equity mutual funds and 0.14% for index equity ETFs³. “Asset-weighted” matters: the averages fall partly because investors moved their money into cheaper funds, not only because funds cut prices.

Morningstar’s 2026 fee study puts the asset-weighted average paid across US funds at 0.32% in 2025, less than half the 0.80% of two decades earlier, and Morningstar’s earlier research found the expense ratio a better predictor of a fund’s later results than any other variable it tested, past performance included⁴. Over the ten years to 2025, 31% of active funds in the cheapest fifth of their category beat their average passive rival, against 17% of the dearest fifth⁴. For why most active funds trail their index in the first place, see index vs active funds: the SPIVA data.

India: SEBI’s expense caps and direct versus regular plans

Indian mutual funds quote a total expense ratio (TER), deducted daily from the scheme’s assets and so already inside its NAV. SEBI caps it by size: the bigger the scheme, the lower the ceiling. In December 2025 SEBI’s board approved new mutual fund regulations under which the cap becomes a base expense ratio that excludes statutory levies such as STT, GST and stamp duty, which are now charged at actual cost on top⁵. The new limits apply from 1 April 2026⁶.

Since 1 January 2013, every scheme has had to offer a direct plan for money invested without a distributor: same portfolio, same fund manager, a separate NAV and a lower expense ratio that leaves out distribution expenses and commission⁷. SEBI’s own board papers describe distribution expense as the only substantive difference between the two plans; management and other costs are common to both⁸. SEBI publishes no single average for the gap, and it varies by scheme, so the table below shows what two illustrative gaps would do.

The fair other side: a regular plan pays somebody, and that person may earn their fee by keeping a household invested through a crash or stopping it from buying the wrong product. What matters is knowing the price and deciding whether the service is worth it. A direct plan with no help at all is not automatically the cheaper outcome if it leads to panic selling.

The UK: fund charges, platform fees and the layers on top

British funds quote an ongoing charges figure (OCF). In its Asset Management Market Study, the Financial Conduct Authority found an average ongoing charge of 0.90% for actively managed UK large-company equity funds against 0.15% for passive ones, asset-weighted, and identified about £109 billion in “active” funds that closely tracked the market while costing considerably more than passive funds¹⁰.

The fund is only one layer. Most UK investors hold funds through a platform, and the FCA’s platforms study found that the yearly charge on a £5,000 stocks and shares ISA ranged from 0.20% to 2.40% depending on the platform, a difference worth up to £650 over five years at 5% growth¹¹. Platform fees may be a percentage, a flat fee or a mix, so the cheapest structure depends on the size of the account.

Advisory fees: the largest layer, and the one with a case for it

An adviser paid as a percentage of assets is usually the largest single cost a household pays. Kitces Research found that 62% of the US advisers it surveyed charge at least 1% a year on a $1 million portfolio, and that 92% use asset-based fees in some form¹². Stacked on a fund’s own charge and a platform fee, an adviser’s fee is what moves a household from the top rows of the first table to the bottom ones.

Vanguard’s “Advisor’s Alpha” research argues the other side: that an adviser can add up to, or even beyond, about 3% a year in net returns, mostly through behavioural coaching, rebalancing, tax-aware placement and cheaper implementation¹³. Vanguard is clear that this is a potential, not a yearly certainty — much of it arrives in the few years when a client would otherwise have sold in a panic. The honest summary is that an adviser can be worth more than their fee, but only the household can judge whether theirs is, and only if they know what the fee is in money.

1. List every account and fund you hold, and each one’s TER, OCF or expense ratio from its fact sheet.
2. Add the platform or account fee and any adviser fee, each as a share of what you hold.
3. Multiply the total by your balance: that is your yearly cost in money, not in percentage points.
4. Read your plan’s return as the return after that cost: whatever your plan assumes, the market has to deliver that much plus every layer you pay.
5. Decide whether each layer buys something you value. Cost is one of the few parts of investing you can set in advance.

Fees when you stop earning

Fees do not stop when contributions do. Somebody drawing 4% a year from a portfolio that also pays 1% a year in charges needs it to support 5% a year — a quarter more than the withdrawal alone². Because safe withdrawal rates for long horizons are already lower than the 30-year headline, a cost that looks modest in a saver’s portfolio can decide whether a drawdown plan lasts (the 4% rule by country).

Checking fees against your own plan

The question for a household is not whether a fund is cheap in the abstract but whether what it earns after every charge keeps up with what the plan assumes. A fund’s expense ratio is already inside its daily price, so a return measured on prices is a return after the fund’s own costs; a fee charged on a purchase is part of what you paid.