Important!

Our Tumwater office moved. Visit us at our new location.

Nuestra oficina en Tumwater se ha mudado. Visítenos en nuestra nueva ubicación. 

Requirements to obtain contractors' UBI numbers

RCW 82.32.070 requires all taxpayers to maintain a record of the Unified Business Identifier (UBI) account number of each contractor they hire to perform construction. For example, the law requires a general contractor to record the UBI number of all subcontractors. Taxpayers must keep record of the UBI numbers for at least five years. If a taxpayer fails to record the contractor's UBI number, the taxpayer will not be allowed to bid on a public works contract for two years. The taxpayer will also be subject to a penalty not to exceed $250.