Tax forms, explained one tap at a time

If you're an employee, this is the form. It reports what you earned and, just as important, how much tax was already pulled from your paychecks. Box 1 is your taxable wages; box 2 is the federal tax withheld — the number that decides your refund.

• Get one from every employer you worked for during the year.
• The withheld amount in box 2 goes straight into your refund math.
• Missing by mid-February? Ask the employer, then the IRS.

The freelancer's W-2 — except no tax was withheld. A client who paid you $600 or more for work sends one. You owe both income tax and self-employment tax on this money, which is why setting aside roughly a quarter to a third as you go saves a nasty April.

• Report it on Schedule C as business income.
• No withholding means you handle estimated taxes yourself.
• Even if no 1099 arrives, the income is still taxable.

Reports money you took in through payment apps and marketplaces. The reporting threshold has been moving around, so more casual sellers are seeing these than before. Reselling a couch at a loss isn't taxable; running a side shop is. Keep records that show which is which.

Earned more than $10 in interest on a savings account or CD? The bank reports it here, and so should you. Small amounts feel ignorable, but the IRS gets a copy too, so leaving it off invites a mismatch letter.

This is your return. Every W-2 and 1099 feeds into it, you subtract your deductions, apply credits, and the bottom line is a refund or a balance due. Schedules attach for specific situations: Schedule C for self-employment, Schedule B for sizable interest and dividends, Schedule SE for self-employment tax.

• Software fills this in for you from the source forms.
• The signature line matters — an unsigned return isn't filed.
• Keep a copy for at least three years.

The one form on this list you fill out before the year, not after. It tells your employer how much tax to hold back from each check. Get a giant refund every year? Your W-4 is over-withholding. Owe every year? It's under-withholding. Tuning it is the single most effective way to fix your refund, and you can redo it anytime.