IRS Letter 2645C: Interim letter — IRS needs more time
Quick answerThe IRS received your response or inquiry and needs more time — often 60 days — to give you a full answer.
Letter / notice2645C
MeaningInterim letter — IRS needs more time
Action needed?Yes — see steps
What happens next
No action is needed while you wait.
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What you should do
- Keep the letter
- Don't send duplicate documents unless asked
Scam check: the IRS first contacts you by mail. Use only the phone numbers printed on your letter or on IRS.gov — never ones from a text, email or unofficial site.
Frequently asked questions
What does IRS Letter 2645C mean?
The IRS received your response or inquiry and needs more time — often 60 days — to give you a full answer.
What should I do?
Keep the letter Don't send duplicate documents unless asked
How long does it take?
No action is needed while you wait.
Sources
- IRS: Understanding your IRS notice or letter
- IRS: Get Transcript
- Taxpayer Advocate Service (independent help inside the IRS)
Written by the editorial team and checked against the official sources above. See our editorial policy.
By the TranscriptCodes Editorial Team · Last reviewed 2026-11-12.