Configure Taxes on an Accounting Account

In order to configure your chart of accounts to determine the accounts on which your tax rules should be applied automatically, you must choose your taxable accounts.

To configure it, click on Accounting > Chart of Accounts and select the account.

In the master record of the selected account, check the box "This account is taxable" so that taxes are automatically applied to transactions made with this account.

Use the percentages to apply the correct allocation. For example: representation costs should be at 50% and excluded from box 101 of the tax return. 

Then click on Save.