Do I have to file a federal tax return if I earned very little?

It depends on your gross income, filing status, and age. A single filer under 65 generally must file once gross income reaches the standard deduction — $15,000 for 2025 returns. But you should file even below that threshold if you had federal tax withheld, qualify for a refundable credit like the Earned Income Tax Credit, or had self-employment income of $400 or more.

Is the tax deadline always April 15?

For most individual returns, yes — the 2025 tax year return is due April 15, 2026. If the 15th falls on a weekend or holiday, it moves to the next business day. Certain federally declared disaster areas get automatic extensions, and taxpayers abroad get an automatic two-month extension to June 15.

What's the difference between married filing jointly and married filing separately?

Married filing jointly combines both spouses' income on one return and usually produces a lower total tax, plus access to more credits. Married filing separately keeps returns separate but disqualifies you from several credits and deductions. Separately is occasionally worth it — high medical bills tied to one spouse, or to shield one spouse from the other's liability — but jointly wins for most couples.

Will I get a refund or owe money at filing?

A refund means you had more tax withheld or prepaid than you owed — the IRS returns the difference. A balance due means the opposite. A large refund isn't free money; it's an interest-free loan you made to the government. Adjusting your Form W-4 withholding to land near zero keeps that cash in your paycheck all year.

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Federal Tax

Filing Your Federal Income Tax Return: A Plain-English Guide for 2026

Who has to file, which status to pick, the forms and schedules that actually apply to you, and how to hit the April 15 deadline without a surprise balance due. The basics done right.

SMAART Tax Team

February 3, 2026

6 min read

|Reviewed by Ray Dominguez, EA, USTCP