How to update your taxes in Odoo Enterprise (SaaS or On Premise)? If you have the 11.1 version, all the work is already been done, you don’t have to do anything. If you have started on an earlier version, you first have to update the module “Switzerland - Accounting Reports”. For this, you go in Apps > remove the filter “Apps” > search for “Switzerland - Accounting Reports” > open the module > click on “upgrade”. Here are the new taxes to create (you can create them by duplicating the existing taxes): Tax Name Rate Label on Invoice Tax Group Tax Scope Tag TVA 7.7% sur achat B&S (TN) 7.7% 7.7% achat TVA 7.7% Purchases Switzerland VAT Form: grid 400 TVA 7.7% sur achat B&S (Incl. TN) 7.7% 7.7% achat Incl. TVA 7.7% Purchases Switzerland VAT Form: grid 400 TVA 7.7% sur invest. et autres ch. (TN) 7.7% 7.7% invest. TVA 7.7% Purchases Switzerland VAT Form: grid 405 TVA 7.7% sur invest. et autres ch. (Incl. TN) 7.7% 7.7% invest. Incl. TVA 7.7% Purchases Switzerland VAT Form: grid 405 TVA 3.7% sur achat B&S (TS) 3.7% 3.7% achat TVA 3.7% Purchases Switzerland VAT Form: grid 400 TVA 3.7% sur achat B&S (Incl. TS) 3.7% 3.7% achat Incl. TVA 3.7% Purchases Switzerland VAT Form: grid 400 TVA 3.7% sur invest. et autres ch. (TS) 3.7% 3.7% invest TVA 3.7% Purchases Switzerland VAT Form: grid 405 TVA 3.7% sur invest. et autres ch. (Incl. TS) 3.7% 3.7% invest Incl. TVA 3.7% Purchases Switzerland VAT Form: grid 405 TVA due a 7.7% (TN) 7.7% 7.7% TVA 7.7% Sales Switzerland VAT Form: grid 302 base, Switzerland VAT Form: grid 302 tax TVA due à 7.7% (Incl. TN) 7.7% 7.7% Incl. TVA 7.7% Sales Switzerland VAT Form: grid 302 base, Switzerland VAT Form: grid 302 tax TVA due à 3.7% (TS) 3.7% 3.7% TVA 3.7% Sales Switzerland VAT Form: grid 342 base, Switzerland VAT Form: grid 342 tax TVA due a 3.7% (Incl. TS) 3.7% 3.7% Incl. TVA 3.7% Sales Switzerland VAT Form: grid 342 base, Switzerland VAT Form: grid 342 tax TIP :Do not suppress or modify the existing taxes (8.0% and 3.8%). You just have to archive them once you have encoded all your 2017 transactions.