IRS CP523 Notice: Installment Agreement Default — Intent to Terminate
A CP523 notice means you defaulted on your IRS payment plan — by missing a payment, incurring new tax debt, or not filing a return — and the IRS intends to terminate the agreement and resume collection (including levies) in 30 days.
Deadline calculator
The CP523 clock runs from the date printed on the notice — not the day you opened it.
Estimate only, based on the standard 30-day CP523 window. Your notice controls — always use the specific date printed on it.
What a CP523 actually means
The three usual triggers: a missed/late installment, a new balance from a recent return, or an unfiled return. Any of them voids the deal you had.
Caught within the window, this is very fixable — reinstatement is routine, often without re-proving finances. Ignored, the full balance accelerates and levy rights revive after 30 days.
What to do, step by step
- 1Identify the default reason (it's stated on the notice).
- 2If it was a missed payment, pay it now and call to reinstate the agreement.
- 3If a new tax year created debt, ask to roll the new balance into a revised agreement.
- 4If a return is unfiled, file it immediately — reinstatement requires filing compliance.
- 5Act inside the 30 days: reinstating before termination is dramatically easier than negotiating after levies restart.
Common questions
Will the IRS levy me right after a CP523?+
Not during the 30-day window, and not while a timely appeal (CAP) is pending. But once the agreement terminates, levy action can resume — this letter is the cheap moment to fix it.
Does reinstating a payment plan cost anything?+
The IRS charges a reinstatement fee (reduced for low-income taxpayers). It's small compared to the cost of levies and default interest.
Received a CP523? Get it handled.
Talk to a tax specialist about your notice — free, no pressure, no judgment.