Can you find the base rate by multiplying by 1/0.19? 1. Can you find the base rate by multiplying by 1/0.19? Technically, yes. If you know the amount of VAT at 19%, you can find the base rate excluding tax by dividing this amount by 0.19. For example, a VAT rate of 19 D corresponds to a base rate of 100 D. This method is useful when the base rate is not indicated, but it only works if you are certain that the rate is indeed 19% and that no other taxes are included in the base rate. 2. Limitations of this method Warning: This method does not work if the VAT is calculated on a base rate that includes other taxes such as the FODEC (French tax on deductions for the sale of goods and services) or the consumption tax. In this case, multiplying by 1/0.19 will not give you the original price excluding tax, but an expanded base rate. It is therefore essential to know the exact structure of the invoice to avoid errors. 3. Recommendation for Clear Invoice Reading To avoid confusion, it is recommended to request detailed invoices that clearly indicate: Price excluding tax Discounts applied VAT rates used Amount of each tax (FODEC, consumption tax, VAT) This facilitates accounting, tax audits, and understanding of calculations.