What You Need Before Filing Your First Tax Return

Gather these documents before you start

You need three categories of documents to file: proof of income, proof of taxes already paid, and personal identification. The specific forms depend on how you earned money — whether you worked for an employer, were self-employed, received investment income, or some combination. Start by collecting everything, then match it to the form you'll use.

For employment income, your employer sends you a W-2 form by January 31st each year. This shows your wages and the taxes your employer already withheld. If you worked for multiple employers, you'll receive multiple W-2s. If you're self-employed or did freelance work, you won't receive a W-2 — instead, you'll need to gather your own records of what you earned and what you spent.

For investment income (interest, dividends, capital gains), banks and investment companies send 1099 forms. The most common is the 1099-INT for interest and 1099-DIV for dividends. If you sold stocks or crypto at a profit, you may receive a 1099-B. These arrive by January 31st as well. If you received unemployment benefits, student loan interest statements, or education credits, those also come as 1099 forms with different numbers.

Key Takeaways

• Collect your W-2 from each employer and any 1099 forms from banks, investment companies, or other income sources before you file.
• You'll need your Social Security number, date of birth, and filing status (single, married, head of household) to complete your return.
• If you paid taxes through withholding or estimated payments, gather those records — they reduce what you owe or increase your refund.
• Deductions and credits lower your tax bill, but only if you have receipts or records to back them up.
• The IRS deadline is April 15th, but filing earlier means a refund arrives sooner if you're owed one.

Proof of taxes already paid

If your employer withheld taxes from your paychecks, that amount appears on your W-2. You don't need a separate document — the W-2 itself is the proof. The IRS already knows about it because your employer reported it to them.

If you were self-employed and made quarterly estimated tax payments, keep the confirmation receipts or bank records showing you paid. If you received a refund last year and the IRS applied it to this year's taxes, that's also recorded in the IRS system, but it's helpful to have your prior year return for reference.

If you had taxes withheld from unemployment benefits, interest income, or other sources, those withholdings appear on the corresponding 1099 form. Again, you don't need separate proof — the form itself documents it.

Personal information you'll need

Have your Social Security number, date of birth, and current mailing address ready. If you're married and filing jointly, you'll need your spouse's Social Security number and date of birth as well. If you have dependents (children, elderly parents, or others you support), gather their Social Security numbers and dates of birth too.

You'll also need to know your filing status: single, married filing jointly, married filing separately, head of household, or may have access to widow(er). Your filing status depends on your marital status on December 31st of the tax year you're filing for, and whether you have dependents. If you're unsure which applies to you, the IRS website has a tool to help you determine it.

Receipts and records for deductions

Deductions reduce the income you pay tax on. The standard deduction is a flat amount that most people use — you don't need receipts for it. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly, though these amounts change yearly. If you take the standard deduction, you're done with this section.

If you itemize deductions instead (which means listing specific expenses rather than taking the standard amount), you need receipts. Common itemized deductions include mortgage interest, property taxes, charitable donations, and medical expenses above a certain threshold. Keep bank statements, credit card statements, donation receipts, and medical bills. The IRS doesn't ask you to send these with your return, but you must keep them for at least three years in case of an audit.

Education credits (like the American Opportunity Credit or Lifetime Learning Credit) require proof of tuition paid and enrollment status. Gather your school's 1098-T form if they issued one, plus receipts for any tuition you paid out of pocket. Child care expenses require the name, address, and tax ID of the provider.

What to do if a document is missing

If you haven't received a W-2 by early February, contact your employer's payroll department. If they say they mailed it, ask them to resend it or provide a copy. If an employer has gone out of business or you can't reach them, the IRS can help — call 800-829-1040 and explain the situation.

If you're missing a 1099 form from a bank or investment company, log into your account online — most institutions let you download prior-year forms from your account dashboard. If not, call the company and request a copy. You can also file your return without the form if you have your own records of the income, though the IRS may contact you later if their records don't match.

If you lost receipts for deductions, you can still claim them if you have other documentation: bank or credit card statements showing the payment, email confirmations, or written records you kept at the time. The IRS understands that original receipts get lost, but you need something that shows what you spent and when.

Organize before you file

Create a folder (physical or digital) and sort documents by type: W-2s together, 1099s together, receipts for deductions together, and personal information in one place. Write down the totals from each form — your total wages from all W-2s, total interest from all 1099-INTs, and so on. This makes the filing process faster and reduces mistakes.

If you're using tax software, it will walk you through entering this information step by step. If you're working with a tax preparer, send them everything at once rather than in pieces — they'll ask for what they need and return the rest. Either way, having it organized saves time and money.

Frequently Asked Questions

Do I need to print and mail my tax return?

No. The IRS prefers electronic filing. You can file online using free tax software (if your income is below a certain threshold), paid software, or a tax preparer. E-filing is faster, more accurate, and you get a confirmation that the IRS received it. Paper returns take much longer to process.

What if I don't have a Social Security number yet?

You need one to file. Apply for a Social Security number at your local Social Security office or online at ssa.gov. Bring proof of identity, proof of age, and proof of citizenship or legal residency. Processing takes one to two weeks. If you're waiting, you can gather your other documents in the meantime.

Can I file before I receive all my documents?

You can file once you have your W-2s and any 1099s for income you received. If you're expecting a 1099 that hasn't arrived by mid-February, contact the issuer. Filing without it means the IRS may contact you later if their records show income you didn't report. It's safer to wait or file an amended return once you receive it.

What happens if I file and then realize I'm missing something?

You can file an amended return using Form 1040-X. This is common and not a problem — the IRS processes thousands of amended returns. You have three years to file an amended return if you owe money or want to claim a refund you missed.

Do I need to keep these documents after I file?

Yes. Keep all documents related to your return for at least three years. The IRS can audit returns from the past three years, and you'll need the original documents to prove what you reported. If you claimed deductions or credits, keep those receipts too. After three years, you can safely discard them unless you have a specific reason to keep them longer.