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Responding to an IRS Letter 525

Letter 525 gives you 30 days to protest examination results to IRS Appeals. Skip it and your next stop is the 90-day letter (Notice of Deficiency).

Herman Viglione, EA
Written by
Herman Viglione, EA
Updated April 22, 2026
30-day response window

IRS notices have short response windows. Call the office today if your deadline is close.

The protest window

A written protest within 30 days preserves Appeals rights. For disputed amounts over $25,000, the protest requires specific content: facts, law, and position statement. Under $25,000 can use a simpler small-case request.

Why Appeals matters

Appeals is independent of the examination team. They consider hazards of litigation and can settle for less than the examiner's proposed amount. Most audit disputes resolve at Appeals rather than Tax Court.

Have a specific situation?
Call the office and a human answers.

Common questions

What if I agree with part of the audit?
Sign the agreed portion and protest the rest. Partial agreement is standard.

Related

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