How to Read an IRS Form Letter Without Panic

Decode IRS notices systematically by identifying the letter type, understanding the timeline, and calculating your response options.

1. Find the notice number and date. Look for the CP or LTR number in the upper right corner — this tells you exactly what type of notice you received. The notice date (not the date you received it) starts your response clock. Common notices: CP14 (first balance due), CP501 (balance due reminder), CP2000 (proposed changes to your return).
2. Calculate your response deadline. Most IRS notices give you 30 days from the notice date to respond, but some critical notices (like CP2000) give you 30 days to agree or disagree. Appeals typically have 30 days. Collection notices may demand payment in 10 days. Mark the deadline on your calendar immediately.
3. Identify the specific issue and dollar amount. The letter will state whether it's about unpaid taxes, proposed changes to your return, or information requests. Note the exact amount owed, proposed adjustment, or penalty. Cross-reference this with your records before assuming the IRS is correct.
4. Determine your three options. You can agree and pay, disagree and provide documentation, or request additional time. If you owe money, calculate interest and penalties accruing daily (typically 3-8% annually plus failure-to-pay penalties of 0.5% per month). Even partial payment stops some penalty accumulation.
5. Respond in writing with documentation. Call the phone number only for clarification — formal responses require written documentation sent to the address on the notice. Include copies (never originals) of supporting documents, reference the notice number, and request confirmation of receipt. Keep copies of everything you send.