The October 15 deadline, plainly
An extension moves your filing deadline from April to October 15. It does not move your payment deadline. Any tax you owe has been building interest since April. There's no second extension for most people, so October 15 is the last day to file without the failure-to-file penalty starting.
Myth vs. reality
Myth
"If I can't pay, I should wait to file until I can."
Reality
Filing late costs far more than paying late. File on time, even with a balance.
| Penalty | Monthly rate | Maximum |
|---|---|---|
| Failure to file | 5% of unpaid tax | 25% |
| Failure to pay | 0.5% of unpaid tax | 25% |
Interest is charged on top of both. If your return is more than 60 days late, a minimum penalty also applies.
Missing a W-2 or 1099?
You don't have to wait for a lost form. The IRS keeps a record of the income reported under your name, called a wage and income transcript. I can pull that transcript and match it against what you have, so your return reflects what the IRS already sees.
If a form still isn't available, the IRS allows a careful, reasonable estimate using your final pay stub or bank records (Form 4852 replaces a missing W-2). If the real form arrives later and differs, we can amend.
Your document checklist
- Your IRS extension confirmation (Form 4868 acceptance or payment record)
- All W-2s and 1099s you have, including 1099-NEC, 1099-K, 1099-INT and 1099-B
- Last year's tax return
- Records of estimated tax payments made this year
- Self-employment income and expense totals, if you work for yourself
- Form 1098 (mortgage interest), 1098-T (tuition) and any health coverage forms
- A photo ID and bank details for a refund or payment
Don't have everything? Send what you have. We'll work out the rest together.
Written by Aruna Surapaneni, EA. Licensed to represent taxpayers before the IRS, based in Rochester Hills, Michigan. This guide is general information, not advice for your specific situation.