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A letter from the IRS.
Let’s make sense of it.

Ignoring an IRS letter won’t make it go away. Find out what it means and what to do next.

Browse all 298 letter & notice numbers
Illustration only. Look for “CP,” “LT,” or “LTR” and a number, usually at the top right of your notice.

A resource from Law Offices of Darrin T. Mish, P.A.

Federal tax matters. Nationwide.Meet the firm

01 / Understand the urgency

Not every letter
means bad news.

Some need a quick response. Others belong in your files. Our guides help you tell the difference.

Find your letter’s category

02 / See the bigger picture

The letter in front of you
is part of a longer story.

A balance-due notice can be followed by reminders and collection notices. This is a common sequence, not a guaranteed schedule. Always read the letter you received.

  1. 01

    CP14

    Use the due date on your notice

    Read the guide
  2. 02

    CP501

    Use the due date on your notice

    Read the guide
  3. 03

    CP503

    Respond by the date on your notice

    Read the guide
  4. 04

    CP504

    Pay or contact the IRS immediately

    Read the guide
  5. 05

    LT11

    30 days to request a CDP hearing

    Read the guide

03 / Know what to do next

Open the envelope.
Know your next step.

Plain-language reading for the questions that come with IRS mail.

Explore the guide library

When you need a person, not another search

Let’s look at the letter together.

Bring your questions. We’ll help you understand the notice and discuss your next step.

Call (813) 229-7100Request a consultation online Free consultation. Use the form anytime.

IRS news, straight from Darrin

IRS Monday

What matters if you owe the IRS. Tax attorney Darrin T. Mish breaks down the news in plain English, in about five minutes.

Watch on YouTube

Featured episode ·

IRS Monday: Oct 15 Deadline, New IRS App, Farmland Tax Rule

Darrin covers the October 15 filing-extension deadline, the new IRS app, and proposed installment-payment rules for certain farmland sales.

About 5 minutes · General information. Follow the instructions and deadlines on your notice.