surtax

A surtax, also known as a tax surcharge, is a tax levied upon another tax.

==Canada== The provincial portion of the value-added tax on goods and services in two Canadian jurisdictions, Quebec and Prince Edward Island, was formerly calculated as a surtax on the sticker price plus the federal Goods and Services Tax. On Prince Edward Island, provincial sales tax was assessed at 10% on top of the federal tax (as of 2013) of 5%, resulting in a total effective rate of 15.5% at the time of its repeal. The Quebec Sales Tax was 9.5%, also assessed on top of the federal tax of 5%, resulting in a total tax burden of 14.975; it, too, was changed in 2013 so as no longer to be a surtax.