What is the "W-2 earnings summary" page, and how do you read it?

The short answer

The earnings summary that arrives with many W-2 packets is a payroll company's own reconciliation sheet — not an IRS form, not something you file, and not something the IRS receives. Its job is to show how your year-to-date gross pay turned into the numbers printed in the W-2 boxes. The official form itself is described on the IRS page About Form W-2, Wage and Tax Statement; anything beyond those lettered and numbered boxes is the payroll provider talking, not the IRS.

What the summary sheet usually contains

Formats vary by provider, but the content is fairly consistent:

Total gross pay for the year — every dollar paid to you, before anything was subtracted.
A list of pre-tax deductions — retirement plan contributions, health premiums under a cafeteria plan, HSA or FSA amounts.
Taxable wage subtotals — the gross figure minus the deductions that don't count for each tax.
A mapping line showing how those subtotals feed Box 1, Box 3, and Box 5.
Year-to-date withholding totals matching Boxes 2, 4, 6, and the state boxes.

That mapping is the useful part. It answers, in one place, the question that sends most people looking: why the salary you think you earned and the number in Box 1 aren't the same. The reason is that Box 1 reports taxable wages, and certain contributions are excluded from taxable income — Publication 525 is the IRS reference for what income is and isn't taxable. We walk through that gap in why Box 1 of your W-2 doesn't match your gross pay.

"How much did I actually make?"

It depends which version of "make" you mean, and the summary sheet is where the two versions sit side by side:

Gross pay — the total on the summary sheet. This is what you earned.
Box 1 taxable wages — what the IRS taxes as wages.
Box 3 and Box 5 — the wage bases for Social Security and Medicare, which follow different exclusion rules and often differ from Box 1 and from each other.

None of these is wrong; they answer different questions. The box-by-box rules are laid out in the IRS General Instructions for Forms W-2 and W-3, and our page on how to read your W-2 goes through them in plain English.

Which pages you actually keep and file

The official W-2 comes in labeled copies:

Copy B — filed with your federal return if you paper-file.
Copy C — your records.
Copy 2 — state or local return, where applicable.

The earnings summary is none of these. Keep it — it's genuinely handy when a number looks off — but it doesn't get attached to anything. If you e-file, you enter the box figures rather than sending paper at all; the IRS filing overview covers the options.

When the summary and the boxes disagree

Occasionally the summary sheet and the form don't reconcile: a deduction is categorized one way in the summary and another in the boxes, or a late payroll adjustment landed after the summary printed. The form governs, because the form is what was reported to the Social Security Administration and the IRS. Codes in Box 12 often explain the discrepancy — those are decoded in W-2 Box 12 codes explained.

If the form itself looks wrong, that's a different process entirely, and the IRS describes the steps in Tax Topic 154. The usual sequence is to contact the employer first for a corrected W-2. We describe how that unfolds in what happens if your W-2 is missing or wrong.