IRS letters follow a sequence — CP14, CP504, LT11/CP90 — and each one raises the stakes. Here's what yours means and what to do next.
An IRS letter in the mailbox has a way of ruining a perfectly good afternoon. But here's the thing most people don't know: IRS letters aren't random. They follow a predictable sequence, each one is a step in a process, and each step tells you exactly how much time you have and what happens next.
Once you can read the sequence, the fear gets a lot smaller — and your options get a lot clearer. Here's the path a typical unpaid balance follows, letter by letter.
The CP14 is where it starts. It says the IRS believes you owe a balance — from a filed return, a correction, or a penalty — and it gives you 21 days to pay.
Two things matter here:
If you agree with the balance but can't pay it all, you don't have to just let it ride. Most balances qualify for a monthly installment agreement, often set up online the same day.
If the CP14 goes unanswered, the IRS sends reminder notices — usually a CP501, then a CP503. They restate the balance (now with more interest and penalties) and ask again.
These letters feel repetitive, and that's exactly why they're dangerous: people get used to them. Each one you set aside makes the next letter in the sequence more serious.
The CP504 arrives by certified mail, and the tone changes. It's a formal Notice of Intent to Levy: pay now, or the IRS can seize your state tax refund and begin identifying other assets.
Penalties have stepped up by this point, but here's what matters: CP504 is still very fixable. Payment plans and penalty relief are still fully available. What's changed isn't your options — it's the clock.
The LT11 (or CP90) is the last letter in the sequence: a Final Notice of Intent to Levy and Notice of Your Right to a Hearing. This is the one that precedes wage garnishment, bank levies, and liens.
You have 30 days to respond or to request a Collection Due Process hearing — and requesting one pauses collection while your case is heard. That hearing right is powerful and real, but it expires. After the 30 days, the IRS can levy without further warning.
The earlier you respond, the more options you have. Payment plans, penalty relief (including first-time abatement, which many people qualify for and never request), and settlement programs all exist — and every one of them works better earlier in the sequence than later.
The worst move at every step is the same: the unopened envelope. Deadlines inside keep running whether you read them or not.
The IRS called me about a balance. Is that this sequence? No — and be careful. Real IRS contact about a balance starts with letters like the ones above. The IRS doesn't initiate contact by phone, text, or social media, and it never demands gift cards or wire transfers. A call out of nowhere is almost certainly a scam. A letter is the real thing.
What if I don't agree with the amount? Respond — don't ignore. Balances can be wrong (missed payments, unapplied credits, corrected returns). Disputing is easiest early in the sequence, and hardest after the final notice.
What if I haven't filed the returns behind the balance? Filing comes first — penalties for not filing are roughly ten times the penalties for not paying, and most resolution options require you to be current on filings. In most cases the IRS asks for the last six years, not your entire history.
Holding one of these letters right now? Tax Titans reviews IRS notices for free — we'll tell you exactly where you are in the sequence and what your options look like. Get your notice reviewed free.
Related reading for your specific notice: CP14 · CP504 · CP90 · LT11
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