The IRS started accepting 2025 federal income tax returns on January 27, 2026, and most taxpayers have until April 15, 2026 to file.1Internal Revenue Service. IRS Opens 2026 Filing Season You are required to file once your gross income crosses a threshold tied to your filing status and age — $15,750 for a single person under 65 for tax year 2025, and as little as $5 for someone married filing separately or $400 in net earnings for a self-employed worker.2Internal Revenue Service. Check if You Need to File a Tax Return
Key Dates for the 2026 Filing Season
January 27, 2026 was the first day the IRS accepted returns for tax year 2025. You can prepare a return earlier through tax software, but nothing gets processed before that opening date.
Employers must generally furnish W-2 forms to workers by January 31. When January 31 falls on a weekend, the delivery date shifts to the next business day.3Internal Revenue Service. General Instructions for Forms W-2 and W-3 Most 1099 forms — covering freelance income, interest, dividends, investment sales, and payment platform transactions — follow a similar early-February timeline.
April 15, 2026 is the filing deadline for most taxpayers. This is the last day to submit your return or pay your balance without triggering late penalties. In years when April 15 lands on a weekend or federal holiday, the deadline moves to the next business day.4Internal Revenue Service. When to File
If you need more time, filing Form 4868 gives you an automatic six-month extension, pushing your filing deadline to October 15, 2026.5Internal Revenue Service. Get an Extension to File Your Tax Return An extension only delays the filing deadline. It does not extend the time to pay. Interest starts accruing on any unpaid balance after April 15, and the IRS adjusts the underpayment rate quarterly. For 2026, that rate is 7% in the first quarter and 6% in the second quarter, down from 8% throughout 2024.6Internal Revenue Service. Quarterly Interest Rates
If you have income without tax withholding — self-employment, business profits, investments, or rentals — you may owe quarterly estimated payments rather than settling up once a year. The IRS requires estimated payments when you expect to owe $1,000 or more in tax after accounting for withholding and refundable credits.7Office of the Law Revision Counsel. 26 USC 6654 – Failure by Individual to Pay Estimated Income Tax For tax year 2026, estimated payments are due April 15, June 15, and September 15 of 2026, plus January 15 of 2027. The installments are not evenly spaced: the gap between the first and second is only two months.
Income Thresholds That Require You to File
The IRS adjusts filing thresholds each year, generally tying them to the standard deduction. For tax year 2025 returns filed in 2026, you must file a federal return if your gross income reaches or exceeds:2Internal Revenue Service. Check if You Need to File a Tax Return
- Single, under 65: $15,750
- Single, 65 or older: $17,550
- Married filing jointly, both under 65: $31,500
- Married filing jointly, one spouse 65 or older: $33,100
- Married filing jointly, both 65 or older: $34,700
- Head of household, under 65: $23,625
- Head of household, 65 or older: $25,625
- Married filing separately, any age: $5
The $5 threshold for married filing separately catches people off guard. The IRS sets it that low because the standard deduction for this status effectively disappears when your spouse itemizes, so nearly any income triggers a filing requirement.
Self-employed workers face a separate, lower bar. Net self-employment earnings of $400 or more trigger self-employment tax (which covers Social Security and Medicare) and a filing obligation regardless of your total income.8Internal Revenue Service. Topic No. 554, Self-Employment Tax This applies to freelancers, gig workers, independent contractors, and anyone running a side business.
Gross income is broader than most people realize. It includes wages, but also business profits, investment gains, interest, dividends, rental income, royalties, pension distributions, and annuity payments.9Office of the Law Revision Counsel. 26 U.S. Code 61 – Gross Income Defined Money from online sales platforms, rideshare driving, and cryptocurrency transactions all count. Income from different sources adds up: $13,000 from a part-time job plus $4,000 selling products online is $17,000 in gross income, above the single filer threshold even though neither source alone would trigger a filing requirement. Social Security benefits can also count toward gross income depending on your other earnings and filing status.
When Filing Below the Threshold Still Pays
Having no legal obligation to file does not mean filing is pointless. The IRS notes several situations where lower earners should file anyway because they stand to get money back:10Internal Revenue Service. Who Needs to File a Tax Return
- Federal income tax was withheld from your paychecks. The only way to recover that money is to file a return.
- You qualify for the Earned Income Tax Credit, worth up to $8,046 for families with three or more qualifying children for tax year 2025. Workers without children can claim up to $649.11Internal Revenue Service. Earned Income and Earned Income Tax Credit (EITC) Tables
- You qualify for the Child Tax Credit, worth up to $2,200 per qualifying child, with a refundable portion (the Additional Child Tax Credit) worth up to $1,700 per child for lower-income families.12Internal Revenue Service. Child Tax Credit
- You qualify for other refundable credits, including the American Opportunity Tax Credit for education expenses, the Premium Tax Credit for marketplace health insurance, and the child and dependent care credit.
The EITC alone goes unclaimed by roughly one in five eligible workers every year. Filing a simple return to collect credits you’ve already earned is almost always worth it.
Penalties If You File or Pay Late
The IRS imposes separate penalties for filing late and paying late, and they stack. The failure-to-file penalty is 5% of your unpaid tax for each month or partial month the return is overdue, capping at 25%.13Internal Revenue Service. Failure to File Penalty If your return is more than 60 days late, the minimum penalty is $525 or 100% of the unpaid tax, whichever is less.14Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges
The failure-to-pay penalty is smaller but runs longer. It accrues at 0.5% of the unpaid tax per month, also capping at 25%. When both penalties apply in the same month, the filing penalty drops to 4.5% so the combined hit stays at 5%.15Internal Revenue Service. Failure to Pay Penalty Interest compounds on top of both penalties from the April deadline until you pay in full.
If you owe money and can’t pay the full amount by April 15, file the return anyway. Filing on time eliminates the larger 5% monthly penalty and limits your exposure to the 0.5% payment penalty plus interest. The IRS offers installment agreements for balances you can’t pay immediately, but those only become available once you’ve actually filed.
What You Need Before You File
Every person listed on your return needs a Social Security Number or Individual Taxpayer Identification Number.16Internal Revenue Service. Taxpayer Identification Numbers (TIN) That covers you, your spouse on a joint return, and any dependents you claim.
Your income documents drive the rest of the process. Form W-2 from each employer shows your wages and the taxes withheld during the year. The 1099 series covers non-wage income: 1099-NEC for freelance or contract work, 1099-INT for bank interest, 1099-DIV for dividends, 1099-B for investment sales, and 1099-K for payment platform transactions above the reporting threshold. These arrive by early February, either by mail or through an online payroll portal.
If you plan to itemize instead of taking the standard deduction, keep records of qualifying expenses. Charitable contributions require documentation that varies with the size of the gift, and medical expenses need receipts.17Internal Revenue Service. Instructions for Schedule A (Form 1040) Documentation for adjustments like student loan interest payments or retirement contributions helps reduce your taxable income.
If you’re worried about someone filing a fraudulent return using your Social Security Number, consider requesting an Identity Protection PIN from the IRS. This six-digit number is known only to you and the IRS and blocks unauthorized filings. You sign up through your IRS online account.18Internal Revenue Service. Get an Identity Protection PIN
Once your documents are in hand, IRS Free File offers free guided tax software for taxpayers with an adjusted gross income of $89,000 or less.19Internal Revenue Service. E-file: Do Your Taxes for Free E-filed returns are generally processed within 21 days, while paper returns take six weeks or longer.20Internal Revenue Service. Refunds Keep copies of your return and supporting documents for at least three years, the standard window during which the IRS can assess additional tax.21Internal Revenue Service. How Long Should I Keep Records?