2025 Tax Return Deadline, Standard Deduction and Filing Rules
Most calendar-year taxpayers had to file and pay 2025 federal income taxes by April 15, 2026; filing thresholds and deductions depend on status and age.
Timeline
- December 31, 2025: The 2025 calendar tax year ended for most individual filers.
- April 15, 2026: The general federal deadline to file a 2025 return and pay tax due.
- October 15, 2026: The general filing deadline for taxpayers who obtained an automatic extension.
For most United States taxpayers who use the calendar year, the federal deadline for a 2025 Form 1040 or 1040-SR was April 15, 2026. An electronic return is timely based on when it is transmitted in the filer’s time zone. Special rules can give more time to people affected by federally declared disasters, qualifying taxpayers abroad, and members of the armed forces serving in designated areas. [1][2]
The standard deduction for tax year 2025 is $15,750 for single filers and married people filing separately, $31,500 for married couples filing jointly and qualifying surviving spouses, and $23,625 for heads of household. Higher amounts can apply when a filer is age 65 or older or blind, while dependents and some other taxpayers use different rules. [2][3]
A standard deduction is not itself the universal income threshold for filing. Filing requirements depend on gross income, filing status, age, dependency status and several special situations. For example, Publication 501 lists $15,750 as the general gross-income threshold for a single filer under 65, but it also identifies cases in which someone must file at a lower income. [2]
For most taxpayers under 65, Publication 501 lists general thresholds of $23,625 for head of household and $31,500 for married filing jointly when both spouses are under 65. Married filing separately has a much lower general threshold. Self-employment income, advance premium tax credits and other circumstances can independently create a filing requirement, so a single table cannot resolve every case. [2]
An automatic extension moves the filing deadline to October 15, 2026, but it does not move the April deadline for paying tax. A taxpayer who expected to owe generally needed to estimate and pay by April 15 to reduce possible interest and penalties. The IRS also offers payment options; an extension request is not a substitute for a payment arrangement. [1][3]
Someone who is not required to file may still benefit from filing. A return can claim a refund of federal income tax withheld and refundable credits for which the taxpayer qualifies. Refund and credit eligibility use their own rules, and a refund claim is time-limited, so “not required to file” does not always mean “should not file.” [2][3]
Use the instructions and publications for the exact tax year rather than figures from a previous or later return. Tax law, inflation adjustments, disaster relief and filing software change over time. The IRS Interactive Tax Assistant and the current Form 1040 instructions are better checks for an unusual household than a generic summary. [1][2][3]