Tax Filing Basics
Learn who has to file, which forms to gather, how to pick a filing status, and when it is due.
TL;DR
- File your 2026 return by
April 15, 2027, or request an extension. - Gather every
W-2and1099before you start entering numbers. - Pick the right
filingStatus; it sets your deduction and your brackets.
Do You Need to File
Single FilerYou generally must file once gross income passes the standard deduction.
Single, under 65: over $16,100Married Filing JointlyCouples filing together have a higher threshold to match their deduction.
Both under 65: over $32,200Self-EmployedFreelance or gig profit triggers a return at a much lower amount.
Net profit of $400+ = must fileFile AnywayFiling below the threshold can still return withheld tax to you.
Tax withheld? File to get it backGather Your Documents
W-2Shows your wages and the tax your employer already withheld.
One W-2 per employer, due by Jan 311099 FormsReport income that had no payroll withholding taken out.
1099-NEC freelance, 1099-INT interest1098 FormsShow payments that may earn you a deduction or credit.
Mortgage, student loan, tuitionLast Year's ReturnYour prior-year AGI verifies your identity when you e-file.
Keep last year's AGI handyPick Your Filing Status
SingleFor unmarried people who do not qualify for another status.
Standard deduction: $16,100Married Filing JointlyCombines both spouses' income and usually produces the lowest tax.
Standard deduction: $32,200Head of HouseholdFor unmarried people paying over half the costs of a home for a dependent.
Standard deduction: $24,150Married Filing SeparatelyKeeps spouses' taxes apart but usually costs more overall.
Standard deduction: $16,100Know the Deadlines
Filing DeadlineYour 2026 return and any tax owed are due on this date.
April 15, 2027ExtensionForm 4868 moves your filing date, but not your payment date.
File by Oct 15, 2027, pay by Apr 15Late Filing PenaltyNot filing when you owe costs far more than paying late.
5% of unpaid tax per month, max 25%Late Payment PenaltyPaying late adds a smaller monthly charge plus interest.
0.5% per month + interestFile and Follow Up
E-FileFiling online is faster and catches math errors for you.
E-file + direct deposit = ~21 daysFree FilingIRS Free File covers federal returns for moderate incomes.
Check irs.gov/freefile firstTrack Your RefundCheck your refund status online about a day after e-filing.
irs.gov: Where's My Refund?Keep RecordsSave returns and backup documents in case the IRS asks.
Keep at least 3 years of recordsTips
- E-file with
directDepositfor the fastest refund, usually within about 21 days of the IRS accepting your return. - Check whether you qualify as
headOfHouseholdbefore filing as single, since it gives a bigger deduction and wider low brackets.
Warnings
- An
extensiongives you more time to file, not more time to pay, so estimate and pay what you owe by April 15. - Filing late when you owe triggers a
failureToFilepenalty of 5% of the unpaid tax per month, up to 25%.
In Practice
Follow one simple W-2 return from gross pay to refund using 2026 numbers.
You are single, earned $52,000 on one W-2 in 2026, and your employer withheld $4,500 in federal tax.
- Subtract the standard deduction: $52,000 - $16,100 = $35,900 taxable income.
- Tax the first slice at 10%: $12,400 x 10% = $1,240.
- Tax the rest at 12%: ($35,900 - $12,400) x 12% = $2,820.
- Add them up: $1,240 + $2,820 = $4,060 total tax.
- Compare to withholding: $4,500 withheld - $4,060 owed = $440 back.
You get a $440 refund because you paid a little extra.
A return just compares the tax you owe with the tax you already paid.
FAQ
For 2026, a single filer under 65 generally must file once gross income passes $16,100, which matches the standard deduction. If you are self-employed, the line is just $400 of net profit. Even below the line, filing can pay you back any tax that was withheld and unlock refundable credits like the EITC.
Collect your W-2 from each employer, any 1099 forms for freelance, bank interest, or investment income, and any 1098 forms for mortgage interest, student loan interest, or tuition. You also need Social Security numbers for everyone on the return. Having it all in one place before you start prevents most errors.
If you owe and file late without an extension, the IRS charges 5% of the unpaid tax for each month you are late, up to 25%. A smaller late-payment penalty of 0.5% per month also applies, plus interest. If you are getting a refund, there is no penalty for filing late, but you only have three years to claim it.
Submit Form 4868 by April 15, 2027, and your filing deadline moves to October 15, 2027. The extension is automatic, and no reason is needed. It does not extend the time to pay, so send an estimated payment with the request if you think you owe.