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Understanding IRS Notice Codes: What Each One Means

A quick reference for the most common IRS notices — what each one means and how urgent it is.

First, don't ignore it

Every IRS notice has a reason and a deadline

IRS notices follow a fairly predictable escalation path, from a first balance-due letter to a final notice before enforced collection. Knowing where a specific notice falls in that sequence tells you how much time you realistically have to respond.

Below are the notices we see most often, in the order they typically appear.

Common notices

What each code means

See IRS Representation

This article is general information, not legal or tax advice for your specific situation. Every case is different — talk to a specialist about yours.

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