Using the Sales and Use Tax Interface > Introduction > SUTI and GTM
  
SUTI and GTM
When you process and calculate taxes using SUTI, GTM still generates tax detail records, but the tax amounts that display on those records are calculated by the Quantum system instead of GTM.
In addition, whenever SUTI is not used to calculate taxes, GTM performs the calculations as normal, with no changes in setup or processing required. This ensures that you can use Quantum to calculate US and Canadian taxes while still using GTM for all other taxes. See Tax Rates for more details.