Our GST (Goods and Service Tax) was reduced from 6% to 5% on Jan 1. The problem we are having is how do we issue a refund on a purchase made in December. By law we must refund the tax at the rate the customer was charge which was 6%. We updated the GST to 5% on Jan 1 and now it will only use 5% and we can't edit the amount on the return. Even if we try to recall the transaction it uses the current rate rather than the rate at the time of the transaction.
Anybody have a work around?