How to audit investment fees before opening an account

Start with the way you actually invest

A low advertised trading commission is only one part of an investment account’s cost. Investor.gov identifies both transaction costs and ongoing charges as relevant to the amount an investor keeps. An account comparison works best when it starts with a specific pattern of use: the amount held, contribution frequency, markets used, currency conversions, and expected withdrawals.

Write those assumptions at the top of a worksheet. For example, a hypothetical investor might hold 20,000 units of their home currency, add 300 each month, purchase one fund monthly, and make no international transfers. Another person who trades overseas shares every week needs a different worksheet. Neither pattern should be described as universally typical.

Separate charges into useful groups

Create columns for account charges, trading charges, product expenses, currency conversion, data subscriptions and exit costs. Enter a fee only after locating the provider’s current schedule. Record the document date, your account tier and the local legal entity. If a charge is unclear, keep the cell marked as unresolved rather than assuming it is zero.

For an illustrative account that charges 4 per month plus 2 per purchase, twelve monthly purchases cost 72 over a year before product costs or currency exchange. Dividing that figure by a hypothetical 20,000 balance gives 0.36%. This is arithmetic for the stated assumptions, not a quoted provider price or an estimate of investment performance.

Check what changes the answer

Repeat the worksheet for a smaller and a larger balance. Flat charges can matter differently as account size changes. Check whether the fee waiver requires salary deposits, a minimum balance, a subscription or activity you do not plan to undertake. Avoid counting the same expense twice when one charge already includes another.

Finally, read the account transfer and closure terms. Save the completed comparison with the fee schedules and set a review date. A lower cost account is not automatically suitable: access, custody, available investments, support and regulatory status also matter. Use the worksheet to make the tradeoffs visible instead of allowing a single promotional number to decide the comparison.

Editorial research reviewed 9 November 2026. This is an educational guide; examples are hypothetical. Source documents: Investor.gov: Understanding Fees; Investor.gov: Investment Products. Rules, services and account terms vary by jurisdiction.