The LTR 4281 confirms the IRS received your tax return. If you mailed a paper return and were wondering whether it arrived, this letter is your answer. The return has been received and is in the processing queue.
Keep This Letter
The LTR 4281 serves as proof of filing. In disputes about whether you filed on time, this letter plus your certified mail receipt create a complete record. Store it with your tax documents for the relevant year.
Processing Timeline
Receiving the return and processing it are different things. The LTR 4281 confirms receipt, not processing. Paper returns typically take 6 to 8 weeks to process after receipt. E-filed returns process in 1 to 3 weeks. If you're waiting for a refund, monitor "Where's My Refund" or your IRS Online Account for processing updates.
If You Don't Receive This Letter
Not all paper returns generate a receipt letter. If you mailed your return with certified mail, your postal receipt is your proof of delivery. If you e-filed, your e-file acceptance confirmation serves the same purpose. The LTR 4281 is a bonus confirmation, not the only way to prove filing.
If you need to verify that the IRS received your return, call us at (813) 229-7100.