When a US or Canadian service pro completes a work order for payment, that pro is responsible for calculating and reporting any sales or service tax (in Canada - GST, PST, and HST) that is required in their particular jurisdiction(s). Sales tax most often applies when a pro has been asked to supply a part, but may be required for other situations. Requirements for both types of taxes vary widely by geography. It is the service pro's responsibility to understand all relevant tax laws, to withhold appropriate taxes and, when applicable, to remit them to the appropriate taxing authority. The service pro's OnForce fee is not applied against the sales or service tax allocations.