## Documentation Index Access the complete documentation index at: https://www.zoho.com/om/books/kb/llms.txt Use this file to discover all available documentation pages before proceeding. # Taxes * [How do I access the taxes settings in Zoho Books?](/om/books/kb/taxes/access-tax.html) * [I do business with countries outside Oman. How do I set this up in Zoho Books?](/om/books/kb/taxes/outside-oman.html) * [I do business within the GCC countries. How do I set this up in Zoho Books?](/om/books/kb/taxes/within-gcc.html) * [My TRN doesn’t display in my Invoice. What should I do?](/om/books/kb/taxes/trn-display.html) * [There is no Tax field when I create transactions. What should I do?](/om/books/kb/taxes/no-tax.html) * [How do I add the TRN of my customers or vendors?](/om/books/kb/taxes/cont-trn.html) * [How do I add a different currency for transactions with my contacts?](/om/books/kb/taxes/diff-curr.html) * [How do I set the Place/Source of Supply for my contacts?](/om/books/kb/taxes/pos-cont.html) * [What is a compound tax?](/books/kb/taxes/compound-tax.html) * [What is the difference between a tax group and a compound tax?](/books/kb/taxes/diff-btwn-compound-tax-and-tax-group.html) * [How is the tax amount calculated when tax preferences are set as tax inclusive?](/books/kb/taxes/tax-pref-inclusive.html) * [Is it possible to edit the total tax value in transactions?](/books/kb/taxes/edit-total-tax.html) * * *