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Official form guide
IRS Form 851 is a request to obtain a copy of a previously filed tax return. Use it when you need an exact replica of a return that the IRS has on file.
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IRS Form 851 is a request to obtain a copy of a previously filed tax return. Use it when you need an exact replica of a return that the IRS has on file.
Plain English
If you lost a tax return or need an official copy for a loan, court, or other purpose, you fill out Form 851. It tells the IRS which return you want and where to send it.
Submission Date
AI co-pilot
Form selector
Need a summary of return
Provides transcript, not full copy
✓ Verify required document type
Request for a copy of a foreign return
Power of attorney needed for foreign filings
✓ Confirm authority
There is no statutory deadline for filing Form 851, but the IRS recommends submitting the request at least 30 days before you need the copy. Processing typically takes 4‑6 weeks; expect longer during peak periods.
Checklist
Taxpayer ID
Social Security card or EIN verification letter · Tax documents or IRS notice
Signature
Original handwritten signature · Signed form copy
Photo ID
Driver’s license or passport copy · Government ID
Fee payment
Check or money order · Payment receipt
Mailing address
Current address proof · Utility bill or lease
Field map
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
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Fillable formOpen in Editor->Form 851 is currently active for tax years 2015 onward. The latest revision is dated 2023 and is available on the IRS website.
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