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W9 Form for Requesting A Merchant’s Information


IRS Form W9

A W9 form is the form that a business would use to request a taxpayer identification number and certification from a merchant. Unlike most forms, the W9 is provided to a card processing company or bank.

In general, the information required for the W9 form would include:

  • The Merchant Identification Number (MID)
  • The Last 4 digits of the deposit account (DDA)
  • The merchant’s legal business name
  • DBA (doing business as) name if different
  • Business Ownership Classification (whether the company is a corporation, partnership, or sole proprietorship)
  • Merchant’s Billing Address
  • Employer Identification Number for Business or Social Security Number for individuals and sole proprietors.
  • Certification that you are not subject to backup withholding. If you are subject to backup withholding, it is necessary for you to cross out the section certifying that you are not subject to backup withholding.

This form is used by merchant processors to match up your TIN number with your business name for income reporting purposes. Without proper information, including the exact business name as it appears to the IRS, you may end up having 28% of the revenue from your merchant account withheld until such time as the IRS determines that your information matches the TIN number and company name that the merchant has on file. In order to verify that a company is providing the correct legal name and TIN, it may be necessary for the merchant to contact the IRS and ask for form 147C.