It would be very helpful if the web client allowed calculations to be entered in the amount field. When entering a split transaction from a receipt, I often have to add several values and/or calculate sales tax. I have to do this with a calculator and then copy the value to the split amount field. I would love to just enter something like this: (12.45+3.49+1.98)*1.06+(11.99+2.99) to add three items, calculate sales tax on them and add two more tax free items. This should give a value of 33.98 using rounding to the nearest penny. As a programmer, I know this is a lot harder than it appears. But perhaps you could use a library such as https://github.com/josdejong/mathjs to make the task much easier.