IRS Notice CP148 came about as part of the Consolidated Appropriations Act of 2014. Beginning in 2015, address changes made on the Business Master File (BMF) entity with open employment tax filing requirements generates two notices to the taxpayer confirming the change:
- CP148A is mailed to the taxpayer's new address, and
- CP148B is mailed to the taxpayer's previous address.
Any change to the taxpayer’s address will generate the notices including minor changes such as changing “suite” to “ste.” If the address change is correct, no follow-up action is necessary. If it is not correct, the taxpayer should return the notice to the IRS with a completed Form 8822-B, Change of Address or Responsible Party - Business. Make sure the taxpayer’s business address is consistent on all tax return filings with the IRS.