> For the complete documentation index, see [llms.txt](https://cee-systems.gitbook.io/cee-fare-builder/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cee-systems.gitbook.io/cee-fare-builder/fare-builder-user-manual/user-guide/taxes-modification.md).
# Taxes Modification
Taxes, along with the Currency of Payment code, are automatically retrieved from Galileo. However, the Currency of Payment and taxes can be modified afterwards in several ways.
### Currency of Payment Change
If the Currency of Payment is changed, all tax amounts are updated accordingly with the new currency code, including correct number of decimal places.
Example: Change CZK to USD:
### Fare Calculation Date Change
When the Fare calculation date is changed, tax amounts, ROE, and fare conversions are updated according to the rates valid for the selected day.
Example: Change 30NOV24 to 29NOV24:
### Tax Deletion or Insertion
To modify the tax list, it is recommended to use the built-in context menu for deletion or insertion.
#### Tax Deletion
To delete a tax, click on the **Delete Tax** option in the context menu.
Example: Tax YQ deletion:
  
#### New Tax Insertion
To insert a new tax, add it to the end of the tax list in the table, or click on **Insert Tax** in the context menu for the applicable table row. Note that the total number of taxes is limited to 20.
Example: Adding new tax ZZ to the line number 7:
  
Any modification in the tax list will automatically update the **Total Taxes** and **Ticket Total (TTL)** values.
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