Casio SL-200TE - Casio Office Equipment & Supplies

SOURCE: Need user manual for Casio sl-200te

To change the tax rate, first press AC. Then press SET % for 2 seconds. Next, press TAX+, then enter the new or current tax rate. Enter the rate for a single digit tax rate such as 5% as 5, a single number; if you have a fractional percentage rate, such as 5.75%, enter it just that way: the 5, then a decimal and followed by 7& 5. Then press SET % again and you're done! I just did it on two of the calculators and it works. Hope this helps!