The IRS updated Form W-9 in October 2018. Please use the updated version of the W-9 going forward. The link on the Downloadable Forms page under Accounting will take you to the updated version, but if you have a prior version saved on your computer, you will need to update that to the new version. Please share this information with anyone in your department who requests W-9's from suppliers. The updated W-9 for NDSU is saved in the Taxes section on the Accounting Office webpage.