Utah State Tax Commission - Information for Utah Businesses
For payer ID: The Utah withholding account number is a 14-character number. The first eleven characters are numeric and the last three are “WTH.” Do not enter hyphens. Example: 12345678901WTH.
Caution: The program wants lower case for wth. You may need to contact the payor, to get the first 11 numbers. There may be zeroes in front causing the shortened format.