>That is entirely possible. 500.00, 500.01, 500.02, 500.03, 500.04, 500.05, 500.06, 500.07, 500.08 and 500.09 all result in 74.88, ie 25.00 + 49.88
>
>But the goal was to split 74.88 in 25.00 and 49.88

Ok, so I can get the taxes but there is no way to know what was the base amount or the grand total.

Thanks, I will do more tests on various amounts and will see how it goes.