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IRS CP523: Installment Agreement Default — Intent to Terminate
Straight answer: A CP523 means you defaulted on your IRS installment agreement (missed payment, new balance, or unfiled return) and the IRS intends to terminate it — which reinstates full collection power including levies.
How many days do I have to respond to a CP523?
30 days from the date printed on the notice (not the day you opened it). You have 30 days before termination. Reinstating during this window is far easier than negotiating a new agreement after termination.
Your response deadline is approximately — days from today.
What should I do right now?
- Identify why you defaulted — missed payment, a new tax year's balance added, or an unfiled return.
- Call the number on the notice and request reinstatement; fix the underlying cause (file the return, add the new balance to the agreement).
- If your finances changed, ask about restructuring the payment amount instead of defaulting entirely.
The costly mistake people make with a CP523
Assuming the agreement is already dead and going silent. During the 30-day window, reinstatement is often a single phone call plus a catch-up payment.
Do I need professional help with a CP523?
Helpful if a new balance keeps breaking your agreements — that pattern usually means the agreement was structured wrong (or withholding/estimates need fixing).
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