If you own a Casio calculator—particularly a desktop printing calculator like the HR-100TM , DR-210TM , FR-2650RC , or a non-printing model like the MS-80F —you have likely noticed the TAX+ , TAX- , and TAX SET keys. These buttons are incredibly useful for quickly adding or subtracting sales tax (VAT/GST) from a transaction.
Now that you know how to set the tax rate, put your Casio calculator to full use – and never manually add sales tax again. Need help with a specific Casio model not listed? Refer to your user manual’s “Tax Rate Setting” section, or leave a comment on Casio’s official support page with your exact model number. how to set tax rate in casio calculator
Press the TAX SET button again. The calculator will beep or flash, confirming the rate is stored. If you own a Casio calculator—particularly a desktop
Slide the mode switch back from TAX SET to ON (or PRINT ). Now, press the TAX+ button once without entering any number. The display should show your stored tax rate. For a printing model, it will print something like “TAX % 8.5”. Need help with a specific Casio model not listed
If nothing happens, look for a small recessed button labeled 'TAX SET' near the top right. You will need a ballpoint pen to press it.
Press and hold the TAX SET button (sometimes labeled RATE SET ) for about 2-3 seconds . The display may show "0" or "SET" flashing.
When the display changes (e.g., shows "TAX %" or a blinking number), type your tax rate using the number keys. Example: type 8 . 5 for 8.5%.