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Add more than one tax in a tax table with Gnucash

If you have to collect more than one tax, you must add these taxes in the same taxation table so you can apply them all at the same time on a invoice.

  1. Click on Business / Sales Tax Table .
  2. Click on the tax table you want to edit.
  3. Under the Tax Table Entries, click on New.
  4. Fill details about the tax and click on OK.


If a tax applies over another tax, such as the TVQ over TPS at Quebec for example, it is required to calculate the real percentage of the second tax like this example formula : (1 + TPS) X TVQ