Here's the honest answer: most IRS letters aren't an emergency, but almost every one of them has a clock on it. The fastest way to know which kind you're holding is the notice number printed in the top right corner, usually something like CP14 or LTR 1058. Go ahead and find that number before you do anything else.
Step one: don't ignore it, and don't panic
I've sat with a lot of people who left a letter in a drawer for months because opening it felt worse than not knowing. I get it! But the IRS sends letters in a sequence, and each unanswered one moves you closer to the next, more serious step. Reading it early is what keeps your options open.
The letters we see most often
CP14: a balance is due
This is usually the first bill after a return is processed and a balance is left unpaid. It shows what's owed, including penalties and interest, and a date to pay by. It's a starting point, not a final warning.
CP2000: the IRS thinks income is missing
This one isn't a bill yet. It's a proposal. The IRS compared your return to forms it received, like a 1099 or W-2, and found something that doesn't match. You can agree, partly agree, or disagree, and there's a response date on the letter. Sometimes the IRS is right, and sometimes the income was already reported somewhere else on the return.
CP501 and CP503: reminders
These are follow-ups to an unpaid balance. Each one is a sign the account is moving along the collection path.
CP504 and LTR 1058 or LT11: getting serious
A CP504 says the IRS intends to levy, meaning collect from certain assets like a state tax refund. A Letter 1058 or LT11 is a final notice of intent to levy, and it comes with appeal rights that have a strict deadline. If you're holding one of these, don't wait.
Got a final notice or money being taken from your paycheck or bank? Go straight to a full review. Those deadlines don't wait.
What to do this week
- Find the notice number and the response date on the letter
- Keep the envelope and every page together
- Pull the return for the year the letter mentions
- Don't call and agree to anything before you understand what it says
- Write down any other IRS letters you've gotten, even old ones
Where we come in
As an Enrolled Agent, I'm federally licensed to represent taxpayers before the IRS. We start by finding out exactly what's going on, then tell you the honest next step. Every situation is different, so this article is general education and not advice for your specific letter.