I want know about sales tax return?

BEFORE KNOWING SALE TAX RETURN ONE SHOULD KNOW HOW WE REACH SALE TAX RETURN;
A) WHEN YOU MAKE SALE OR SOLD YOUR PRODUCT YOU HAVE TO CHARGE TAX ON THAT PRODUCT AND TAX RATE ARE DIFFERENT ON DIFFERENT PRODUCT-RATES ARE AVAILABLE EITHER ON WEB SITE OF SALE TAX DEPTT. OF RESPECTIVE STATE IF ANY
B) SALE TAX -
1) FOR LOCAL SALE -WE CALL THIS AS TAX INVOICE AND RATE CHARGED NORMALLY @12.5% &5% IN DELHI (RATE ARE DIFFERENT IN RESPECTIVE STATE)

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