How do you set the tax rate

I haven't used that setting before. If you have fully activated it, you should see many changes along with the dollar sign such as tax break down and GST receipt message. If so, I think this should work:
Turn key to X mode 01012001 SUBTOTAL SUBTOTAL
If the only change is the currency symbol, don't do the above, just let me know.
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If anyone needs more information, the Casio SE-S300 manual is here: http://the-checkout-tech.com/manuals/cashregisters/Casio4.php

It depends on how it is set up currently. You need to set two tax rates (tax1 and tax 2) in the machine, then link them to various departments. It is best to print out the tax settings first, then copy the status when setting the second tax. This is described in the manual. If you need one, try here: http://the-checkout-tech.com/manuals/cashregisters/Casio_PCR-T275_users_manual.html
Once you have the manual, I can work you through it.

1) Turn Switch key to PGM

2) press the TAX PGM key

3) enter tax rate ( example 6% is 6 , 5.75% enter 5.75

4) press the Dept key you want that tax rate set too .

5) repeat steps 3&4 for diffrent tax rates or depts.

6) press Sub total key to end programming


http://www.casio4business.com/sa/products/downloads/manuals/140CR_user_English.pdf ====== USER manual

You need to set one rate for HST and change your department links to look at the single rate. Which tax numbers do you use at the moment? E.g. tax1 PST, tax2, GST. We need to know which tax numbers are allocated for which tax types.
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If anyone needs a manual for a Casio PCR-T465 cash register, http://the-checkout-tech.com/manuals/cashregisters/Casio_PCR-T465_users_and_programming_manual.html

This works on several different casio calculators
Press AC butoon
Press AND HOLD % /Rate Set button for 2 to 3 seconds - This is important
Press Tax+ button
Input the tax rate you want eg: 12½% = 12.5
Press the % /Rate set button again

Voila

Comment je programme les taxe de tvq 5% et tps 7.5 % pour le québec sur ma caisse casio pcr-t275

Hi program the taxes like the book says but fix the gst rate, then go to program mode and push 1 subtotal, then push t/s1(taxtable 1 which is gst) and the dept number you want to use, then subtotal and cash and that will be the dept you will use for just gst. Hope I'm making sense. Took me forever to figure this out.