W-9

IRS Form W-9 (Request for Taxpayer Identification Number and Certification) is a standard federal tax form used to collect a person's or entity's name, address, and taxpayer identification number (TIN) — either a Social Security Number (SSN) or an Employer Identification Number (EIN). The requesting party uses this information to report payments to the IRS on forms such as the 1099-INT, 1099-MISC, or 1099-OID. In mortgage note investing, W-9s are exchanged at multiple stages of the transaction lifecycle and are a routine part of business operations.

What the W-9 Collects

The W-9 captures the following information from the payee (the person or entity receiving payments):

The W-9 is not filed with the IRS. It is retained by the requesting party, who uses the information to prepare and file the appropriate 1099 forms at year-end.

When W-9s Are Required in Note Investing

W-9 exchanges are triggered at multiple points in the note investing workflow:

At Loan Purchase

When you buy a mortgage note, the seller will request a W-9 from your investing entity. This allows them to report the transaction accurately. Similarly, if you are selling a note, you will request a W-9 from the buyer. The closing agent or attorney facilitating the trade will typically collect W-9s from both parties as a standard part of the closing package.

Servicer Onboarding

When you board a loan with a loan servicer, the servicer will require a W-9 for your entity. The servicer collects interest payments on your behalf and must report that income to the IRS. Without a W-9 on file, the servicer may be required to apply backup withholding — withholding 24% of payments and remitting them to the IRS until a valid W-9 is provided.

Vendor and Attorney Payments

Any vendor or attorney you pay more than $600 in a calendar year will need a W-9 from you (and you will need one from them if you are making the payments). This applies to foreclosure attorneys, BPO vendors, property preservation companies, and any other contractors in your workflow.

Borrower Context

Borrowers do not typically provide W-9s to lenders. However, if a loan is resolved through a discounted payoff or settlement where debt is forgiven, the lender (or servicer) must issue a 1099-C (Cancellation of Debt) to the borrower for the forgiven amount. The borrower's TIN is usually already on file from origination.

Entity Structure and the W-9

The tax classification you select on the W-9 must match how your investing entity is registered with the IRS. This is directly tied to your business entity structure:

Filing a W-9 with the wrong tax classification can create mismatched IRS records and trigger compliance issues. When setting up your note investing business, confirm your entity's EIN and classification before completing your first W-9.

Backup Withholding

If you fail to provide a valid W-9 to a paying party, the IRS requires them to withhold 24% of all reportable payments and remit the withheld amount to the IRS. This is called backup withholding. It applies to interest payments, proceeds from note sales, and other income that would normally be reported on a 1099. Providing a completed W-9 promptly avoids this cash flow drag.

Operational Best Practice

Experienced note investors keep a signed, current W-9 for their investing entity readily available as a PDF. It is one of the most frequently requested documents in the business — appearing in virtually every closing package, servicer onboarding, and vendor setup. Having it ready to send eliminates delays and signals professionalism to counterparties.