Resources · Guide
Missed a tax deadline. Here's what to do next.
April 15 came and went, or you missed a quarterly estimate, or last year's return was never filed. The IRS doesn't disappear — but the penalties and the right response depend on which deadline you missed and why. This guide walks through the most common scenarios calmly and tells you what the next move is.
8 min read· Twin Cities, Minnesota
The short version
- If you missed April 15 and you’re owed a refund: no penalty. File when you can, up to 3 years to claim the refund.
- If you missed April 15 and you owe:5%/month failure-to-file penalty plus 0.5%/month failure-to-pay penalty, plus interest (~8% annualized). File now even if you can’t pay.
- If you filed an extension (Form 4868) but didn’t pay: no failure-to-file penalty, but failure-to-pay penalty still accrues from April 15. Extension extends filing only, not payment.
- If you missed a quarterly estimate:pay it now. Underpayment interest is calculated quarterly — the earlier you pay, the less interest.
- If you owe but can’t pay: file anyway. Then set up an IRS payment plan (online at irs.gov, no representation required for amounts under $50K).
Scenario 1: You're owed a refund and didn't file.
The good news: no penalty. The bad news: you only have 3 years from the original deadline to claim the refund. After 3 years, the refund is forfeited to the U.S. Treasury.
What to do:
- Gather the year’s W-2s and 1099s (request transcripts from IRS if missing)
- Prepare and file the return now
- If 2 years has passed and the refund is meaningful, prioritize
One common case: someone moves states, forgets to file MN, assumes “I had withholding, the state owes me — I’ll get to it.” Three years later the refund is gone.
Scenario 2: You filed late and owed money.
The IRS charges two separate penalties plus interest:
Failure-to-file penalty: 5% of the unpaid balance per month (or part of a month) late, up to 25% total. After 60 days late, minimum penalty is the lesser of $485 or 100% of the tax owed.
Failure-to-pay penalty: 0.5% per month of unpaid balance, accruing until paid. The 5% failure-to-file penalty is reduced to 4.5% in any month where failure-to-pay also applies (so combined max is 5%/month, not 5.5%).
Interest: compound daily at the federal short-term rate + 3%. Currently around 8% annualized.
On a $10,000 unpaid balance filed 3 months late: roughly $1,500 in penalties + interest. On a $50,000 balance left unpaid for a year: closer to $7,500–$10,000.
What to do: file immediately, even if you can’t pay the balance. The failure-to-file penalty (5%/month) is ten times the failure-to-pay penalty (0.5%/month). Filing without paying stops the bigger of the two.
Scenario 3: You filed an extension but didn't pay.
Form 4868 extends your filing deadline by 6 months, to October 15. It does NOT extend your payment deadline. April 15 is still when the tax was due.
If you filed the extension on time and paid an accurate estimate by April 15, you’re fine. No penalty.
If you filed the extension on time but underpaid (or didn’t pay at all):
- No failure-to-file penalty (the extension protects you here)
- Failure-to-pay penalty of 0.5%/month accrues from April 15 on the unpaid balance
- Interest accrues from April 15 as well
Conclusion: if you must extend, send an estimated payment with the 4868 covering at least 90% of what you expect to owe. That kills both penalties. The IRS doesn’t charge for overpayment; you just get the excess refunded.
Scenario 4: You missed a quarterly estimate.
Underpayment penalty for missed quarterly estimates is calculated separately on Form 2210 (federal) and the equivalent MN form. It’s interest on the underpayment for the period between the missed due date and the next payment (or April 15).
What to do:
- Pay the missed estimate now — the longer it sits, the more interest
- Resume the regular quarterly schedule for remaining quarters
- Aim to hit one of the safe harbors by year-end (100% of last year’s tax, or 110% if AGI > $150K) — that cancels the penalty regardless of which quarters you missed
The safe harbor is calculated against total annual payments, not quarter-by-quarter. So a missed Q2 can be cured by a larger Q3 + Q4 if total annual payments still hit the safe harbor threshold.
Scenario 5: You owe and can't pay.
The IRS has several real options, none of which require you to ignore the bill:
Short-term payment plan (120 days or less). No setup fee. Just pay it off within 120 days. Use this if you can pay but need a few weeks.
Long-term installment agreement (up to 72 months).Setup fee $31–$130 depending on payment method. Monthly auto-debit is the cheapest. For amounts under $50,000 you can apply online at irs.gov without representation.
Currently Not Collectible status.If you can prove that paying anything would create financial hardship, the IRS can pause collection. They still charge interest, but they won’t levy or garnish. Requires Form 433-F financial disclosure.
Offer in Compromise. Settling for less than the full balance when full payment is genuinely not feasible. The IRS accepts a small fraction of submitted offers. Best handled with formal representation — we coordinate with an Enrolled Agent or tax attorney for this.
What to do if you got a notice.
IRS notices follow a predictable progression:
- CP14— first balance-due notice. You owe; here’s how to pay. Usually 30 days to respond.
- CP501 / CP503 — reminders that the balance is still due. Penalties and interest accruing.
- CP504— intent to seize state tax refund. Last warning before collection escalates.
- LT11 / Letter 1058 — final notice of intent to levy. 30 days to request a Collection Due Process hearing.
Every notice has a due date. Open it, read it, mark the date on your calendar. Then either pay, set up a plan, or get help responding — in that order of preference.
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