Can a credit report supplement be used to verify amounts and dates of mortgage payments made during a forbearance or loan modification period?

Yes.  If the credit report does not reflect the mortgage payment history during the forbearance or Loan Modification, the Mortgagee may obtain verification of Mortgage, bank statements, or other documentation such as a credit report supplement or canceled checks that cover the required period. The use of Third Party Verification services are permitted as outlined in the Handbook 4000.1.
For additional information, see:

All policy information contained in this knowledge base article is based upon the referenced HUD policy document. Any lending or insuring decisions should adhere to the specific information contained in that underlying policy document.

Topic Number: KA-05611