How to read your brokerage statement
Last updated August 2026
Short answer
A statement is a record rather than a report card. The useful reading is checking that the record is accurate, because it is what everything downstream depends on.
Holdings and cost basis
Each position with quantity, market value and, where tracked, cost basis and unrealised gain.
Basis is reliable for covered securities bought after the reporting rules took effect, and unreliable for older, transferred, inherited and equity-compensation shares.
Checking it while you still remember the details is far easier than reconstructing it years later at the point of sale.
The performance figure
Time-weighted return measures the investments themselves, removing the effect of when you added or withdrew money.
Money-weighted return measures your actual experience, including whether contributions arrived at good or bad moments.
Statements rarely say which they use, and the two can differ substantially for an account receiving regular contributions.
Fees, visible and otherwise
Explicit charges are itemised: account fees, transfer fees, commissions where they still apply.
Fund expense ratios are deducted inside the funds and appear nowhere on the statement, which makes the largest cost the least visible one.
Working out the weighted average expense ratio across your holdings is a once-a-year exercise that frequently changes what somebody owns.
Try it in Walnut
Walnut connects to your brokerage and reads your positions directly, which is how the numbers on a statement become something you can ask questions about.
The cash sweep
Uninvested cash goes somewhere by default, and that default is set by the broker rather than by you.
Options range from a money market fund paying close to short rates to a bank sweep paying almost nothing.
On a large cash balance the difference is real money, and changing the setting usually takes one click once you know it exists.
Income and transactions
Dividends and interest received, and whether they were reinvested or left as cash.
Every purchase and sale for the period, which is what you reconcile against your own records.
Corporate actions such as splits, spin-offs and mergers appear here too, and they are the events most likely to disturb cost basis.
An annual pass worth doing
Verify cost basis on anything transferred in, inherited, or received through equity compensation.
Total the fund expense ratios and compare against cheaper equivalents holding the same index.
Check the cash sweep rate, confirm beneficiary designations, and reconcile the year's transactions against the 1099 when it arrives.
Keep them
Statements are the only complete record of what you paid and when, and access frequently ends when an account closes.
Download a year-end statement annually and keep it with the tax forms for that year.
The case where this matters most is a sale decades later of shares transferred between brokers, where the basis on file is wrong and the statement is the only evidence of what actually happened.
Sources
Cost basis reporting and the 1099 series are covered in IRS Publication 550 and About Form 1099-B. Guidance on account statements and fees is published by FINRA at Understanding Account Statements. Walnut is informational and is not an investment adviser. This guide is educational and not personalized investment or tax advice.
FAQ
What is on a brokerage statement?
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Account value at the start and end of the period, holdings with quantities and market values, cost basis where the broker tracks it, transactions, income received, fees, and usually a performance figure.
Which part should I check most carefully?
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Cost basis. It determines your eventual tax bill and it is frequently wrong or missing on transferred, inherited and equity-compensation shares, always in the direction that costs you money.
Why does the performance figure look odd?
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Because brokers calculate it in different ways. Time-weighted return measures the investments; money-weighted return measures your experience including the timing of contributions. Neither is wrong, and they answer different questions.
Where do fees appear?
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Explicit fees are itemised, but the largest cost is usually invisible: fund expense ratios are deducted inside the funds and never appear on the statement at all. Adding them up requires looking at each fund.
What is the cash sweep?
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Where uninvested cash sits: a money market fund, a bank sweep programme or a broker balance. The rate varies enormously between options, and the default is frequently the one paying least.
Should I check unrealised gains?
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Yes, particularly before selling. They tell you what a sale would realise in a taxable account, and reviewing them by lot is what allows a specific-identification sale rather than the broker's default order.
How does this relate to my tax forms?
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The statement is the running record; the 1099 is the annual summary sent to the IRS. If they disagree, the discrepancy is worth resolving before filing rather than afterwards.
How often should I look?
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Quarterly is sufficient for most people, with an annual pass focused on cost basis and fees. Checking daily encourages activity, which is the most reliable way to reduce returns.
How long should I keep statements?
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Keep year-end statements indefinitely for taxable accounts. They are the only complete record of what you paid and when, access frequently ends when an account closes, and the case where it matters is a sale decades later where the basis on file turns out to be wrong.