What happens if you don't file taxes?

The IRS charges a failure-to-file penalty of 5% of unpaid taxes per month, up to 25%. If you also don't pay, there's an additional failure-to-pay penalty of 0.5% per month. Interest compounds daily on top of both. After 3 years, you lose your right to claim a refund. If you owe and never file, the IRS can file a substitute return for you (without your deductions), assess the balance, and begin collection actions including wage garnishment and bank levies.

Can you go to jail for not filing taxes?

It's extremely rare for simple failure to file. Criminal prosecution requires willful tax evasion — meaning you deliberately hid income or assets. The IRS pursues criminal cases for fraud, not for people who genuinely forgot or couldn't afford to pay. However, repeatedly ignoring tax obligations can escalate enforcement actions significantly.

What if I was owed a refund but forgot to file?

If you're owed a refund, there are no penalties for filing late — the IRS doesn't penalize you for not claiming your own money. However, you have only 3 years from the original due date to claim a refund. After that, the money goes to the U.S. Treasury permanently. The IRS estimates billions in unclaimed refunds each year.

I Forgot to File Taxes — What Do I Do?

If you forgot to file your taxes, the single best thing you can do right now is file immediately. Every day you wait increases penalties and interest. If you’re owed a refund, there’s no penalty at all — but you still need to file within 3 years to claim it.

What to Do Right Now

Step	Action	Details
1	Determine what year(s) you missed	Check IRS records at irs.gov/account
2	Gather your tax documents	W-2s, 1099s, deduction receipts
3	File as soon as possible	Use tax software or a professional
4	If you owe, pay what you can	Partial payment is better than no payment
5	Request a payment plan if you can’t pay in full	IRS offers installment agreements online
6	Consider penalty abatement	First-time penalty relief may waive penalties

Penalties for Filing Late

Time Late	Failure-to-File Penalty	Failure-to-Pay Penalty	Combined (on $5,000 owed)
1 month	5% of unpaid taxes	0.5% of unpaid taxes	$275
3 months	15%	1.5%	$825
6 months	25% (maximum)	3%	$1,400
12 months	25% (capped)	6%	$1,550 + interest
3+ years	25% + collections	Ongoing	$1,250+ plus significant interest

The failure-to-file penalty is 10x worse than failure-to-pay. Always file on time, even if you can’t pay.

If You’re Owed a Refund

Situation	Penalty	Deadline
Filed late, refund owed	$0 — no penalty	3 years from original due date
Filed late, balance owed	5%/month + 0.5%/month + interest	File ASAP to stop penalties growing
Never filed, refund owed	$0 penalty, but refund expires	3 years, then lost forever

How to File Past-Due Returns

Method	Cost	Best For
IRS Free File (income under $84,000)	Free	Simple returns
TurboTax / H&R Block / FreeTaxUSA	$0-$100+	Most situations
Tax professional (CPA or EA)	$200-$500+ per year	Multiple years, complex situations, IRS issues
VITA (Volunteer Income Tax Assistance)	Free	Income under $67,000

First-Time Penalty Abatement

Requirement	Details
No penalties in prior 3 tax years	Clean record required
All required returns filed (or on extension)	Must be current
Paid or arranged to pay any tax due	Payment plan counts
How to request	Call IRS (800-829-1040) or write letter with your return
What it waives	Failure-to-file and failure-to-pay penalties (not interest)

IRS Payment Options If You Can’t Pay

Option	Details	How to Apply
Short-term payment plan (120 days)	No setup fee online; pay within 120 days	irs.gov/payments
Long-term installment agreement	$22-$107 setup fee; monthly payments	irs.gov/opa
Offer in Compromise	Settle for less than owed (strict qualifications)	Form 656
Currently Not Collectible	IRS pauses collection if you can prove hardship	Call IRS
Pay what you can now	Reduces the balance that accrues penalties/interest	irs.gov/payments

The Bottom Line

File immediately — that’s the most important step. If you’re owed a refund, there’s no penalty. If you owe, filing now stops the expensive failure-to-file penalty from growing. Pay what you can, set up a payment plan for the rest, and ask about first-time penalty abatement. The IRS would rather work with you than pursue enforcement.