Once your rate is programmed, you can quickly calculate totals: General Calculator - Support - CASIO
For most modern colorful or professional desktop models, follow these steps:
: Press and hold the [% (SET)] or [RATE SET] button for about two to three seconds until the word "SET" appears on the display.
: Type in your desired tax percentage (e.g., for 8%, simply press [8] ).
: Press the [TAX+] button. The display should now show "TAX" and "%" alongside the currently stored rate.
: Press the [% (SET)] or [RATE SET] button again to finalize and store the new rate. Check-and-Correct & GST Models (e.g., Go to product viewer dialog for this item.