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Planview Customer Success Center

Incorrect VAT calculation on invoice

If the VAT calculation is different than you expect, check the Method of tax calculation option that is set in the Billing information for the engagement.

The "Calculate tax on each item separately" option calculates the tax separately for each item and then total the resulting amounts.

The "Calculate tax on total amount of items" option adds the item amounts that have the same tax schedule together first and then calculates the tax on the resulting total. 

These two methods will result in slightly different tax amounts.