The 2026 tax filing season has officially begun, and millions of Americans are preparing to submit their 2025 federal income tax returns.
But here’s the problem: many people still delay filing.
In fact, a recent survey found that nearly one in three taxpayers admit they wait until the last minute.
If you don’t want penalties, late fees or extra stress, here’s what you need to know.
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Mark Your Calendar: April 15 Is the Deadline
If you are filing your 2025 federal tax return, the deadline is April 15, 2026.
This date, commonly known as Tax Day, marks the end of the filing season in the United States.
Filing on or before April 15 helps you avoid penalties and unnecessary charges.
Missing this date can quickly turn into an expensive mistake.
What Happens If You Miss the Deadline?
If you fail to file on time, the Internal Revenue Service (IRS) may charge a failure-to-file penalty.
Here’s how it works:
5% of your unpaid taxes is charged for each month (or part of a month) your return is late.
This penalty can continue for up to five months.
If your return is more than 60 days late, the penalty becomes even steeper.
You may have to pay either 100% of the unpaid tax or up to $485, whichever is lower.
That means delays can cost you much more than you expect.
There’s Also a Failure-to-Pay Penalty
Even if you file your return but don’t pay what you owe, penalties still apply.
The failure-to-pay penalty is typically 0.5% of your unpaid taxes per month.
It can grow up to 25% of the total unpaid amount.
In short, filing and paying on time both matter.
Who Is Required to File a Tax Return?
Most US citizens and permanent residents who work in the country must file a tax return.
You generally need to file if:
Your income exceeds the minimum limit set for your age and filing status.
You earned more than $400 from self-employment, such as freelancing or side work.
You received certain types of income or tax credits that make filing mandatory.
If you’re unsure, checking official IRS guidelines can help you avoid problems later.
Can’t File by April 15? Here’s What You Can Do
If you’re not ready by the deadline, you can request a filing extension.
You can apply:
Online
Through tax software
With a tax professional
By submitting the required IRS form
An approved extension gives you extra time to file your return.
But remember: it does not give you extra time to pay.
If you expect to owe taxes, you should still make a payment by April 15 to avoid penalties and interest.
With deadlines approaching, the smartest move is simple: file early, pay on time, and avoid unnecessary costs.
Waiting may feel easier now, but it can become much more expensive later.