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IRS notice decoder · Business accounts and employer notices

CP148A: the IRS changed your business address

A CP148A, sent to a business's new address, confirms the IRS changed its mailing address. If the change is wrong, reply with Form 8822-B.

By the Carry Forward Learning team Reviewed by Hunter Nottingham, JD, CPA

No dated figures Checked Review by

CheckedOct 19, 2026

What a CP148A means

A CP148A says the IRS changed your business mailing address because it received an employment tax return or a Form 8822-B with a different address. It sends a CP148A to the new address and a CP148B to the old one. source 1

If you made the change, there's nothing to do. source 1

If you didn't, take it seriously. An address change you didn't ask for can be an early sign that someone is using your EIN.

The date that counts

No reply is needed if the change is right. If it's wrong, return the notice with a completed Form 8822-B. source 1

Why people get one

  • The IRS received Form 8822-B or an employment tax return showing a different address. source 1
  • Even a small variation, such as "Street" for "St.", can update the address on file. source 1

First steps

  1. Check whether the new address is one you gave the IRS. source 1
  2. If it's wrong, send back the notice with a completed Form 8822-B. source 1
  3. Keep the notice with your permanent records. source 1
  4. If the change looks like fraud, read the IRS identity theft guidance for businesses at irs.gov, typed in yourself.

What not to do

  • Don't pay through a link or phone number in an unexpected email or text. Use irs.gov, typed in yourself.
  • Don't ignore an address change you didn't make; later notices would go to the wrong place.
  • Related CP148B The copy sent to the old address.

Questions

Why did the IRS change my address?

It updates an address when it receives Form 8822-B, an employment tax return with a different address, or any variation from the address of record. source 1

Sources

  1. IRS, Understanding your CP148A notice (external site) checked Oct 19, 2026

Every rule on this page comes from the IRS page in the list, read on the date shown. Your notice itself is the final word on its own dates and amounts.