Letter 4087C means the IRS can't finish processing your international income tax return until you send more information. The return could be a Form 1040, Form 1040-NR, or Form 1040-SR.
The letter lists exactly what's needed. Requests can include:
- Missing or corrected forms or schedules that support the entries on your return.
- Verification of income, withholding, and credit amounts.
- Verification of taxpayer identification numbers or Social Security numbers.
What to Do
Read the letter carefully. Send the requested information within 30 days. Respond even if you disagree. If you think the IRS has it wrong, give a clear explanation of what you disagree with and why.
Do not file Form 1040-X. An amended return is not the answer to this letter. Answer the letter itself, with the documents it asks for.
Send copies, not originals. Keep a complete copy of your response. If you mail it, use certified mail so you can prove when it was sent.
When Will You Get Your Refund?
If you're due a refund, expect it about 6 to 8 weeks after the IRS receives your response. That clock doesn't start until the IRS has what it asked for. A slow or incomplete response means a slower refund.
If You Can't Get Everything in Time
Don't let the letter sit. The return stays stuck until the IRS gets what it needs. If one document is holding you up, send what you have before the deadline and call the number on your letter to explain what's still coming.
Avoid This Next Year
- Include complete information to support your entries.
- Use the correct forms and schedules for your income, deductions, and credits.
- Double-check Social Security numbers, ITINs, and other identifying information on every tax document.
- Keep copies of your returns, supporting documents, and IRS correspondence.
If you received Letter 4087C and want help putting your response together, call us at (813) 229-7100.