Free IRS form checker Beta
Upload the form the way you would send it — a typed PDF, a flattened copy from tax software, or a scan — and in a few seconds (about a minute for a scan) you get the entries that look missing or inconsistent with the IRS line instructions, each with the instruction it comes from.
It's the same check we run on every form before we fax or mail it for a customer. Automated hints, not tax advice: you decide what to change.
Several files (a return and its schedules)? Select them together — we check them as one package.
Pick the form, add the PDF — the check starts by itself.
Automated hints, not tax advice. We're not a tax preparer and don't guarantee the IRS will accept the form.
What it checks
Form SS-4 — EIN application
- entity type and reason for applying (lines 9a, 10) — one box each
- responsible party and SSN/ITIN line 7b ("Foreign" is allowed)
- your return fax number, so the IRS can fax the EIN back
- dates, county and state, signature and title
Form 5472 + pro forma 1120 — foreign-owned LLC
- the 1120 header: "Foreign-owned U.S. DE", EIN, dates, address
- Part I of 5472: reporting corporation, the year's box 1c
- Part II/III: the foreign owner, country codes, tax ID
- Part IV/V transactions and the signature
Form 1065 + Schedules K-1 — partnership
- every page and schedule in IRS order, the form's year
- partners' K-1 items E/F/H/I/J/L, totals that should match
- Schedule B questions and the signature
- check marks outside the boxes (iPhone Markup)
Form 7004 — 6-month extension
- the form code on line 1 (12 for a single-member LLC, 09 for a partnership)
- "Foreign-owned U.S. DE" across the top when you fax it
- the tax year and whether the deadline has already passed
- EIN, name, address, lines 6–8
Form 3911 — refund trace
- your TIN, joint-return spouse data and signatures
- one tax period per form
- the bank routing number's check digit
- Section II boxes and the signature
Form 3115 — accounting method change (duplicate copy)
- DCN on line 1a, applicant type, filer signature
- every Yes/No question answered
- a tax-year change filed on the wrong form (it goes on Form 1128)
Questions
Yes. No signup and no card. If you want, you can then send the form to the IRS through us — fax from $2.49, or Certified Mail for forms the IRS only takes by mail.
The file is used only for the check and deleted from our server after 24 hours. While the checker is in beta, our team looks at the results — sometimes with the file — to fix findings that were wrong. We never share it.
Yes. Typed fillable PDFs are read exactly; scans are read with OCR, so an "empty" field on a scan is reported as "check this", never as an error.
No. The check compares what it can read with the IRS instructions. It doesn't know your facts, and it isn't a tax preparer. Treat it as a second pair of eyes.
The current revision on irs.gov — and for yearly returns like 1065, the form for the year you are filing. An outdated revision is flagged; we re-check irs.gov every week.