When printing billing statements, how can we get the breakdown of the previous balances to add on the current charges as VATable/NON-VATable Sales. Currently we can only show the correct breakdown of the previous balances if we assume it to be all VATable but if the previous balance is a combination of VATable and NON-VATable Sales, the computation of breakdown on the current billing is incorrect.
These are the sample cases we need to assume when computing for the breakdown.
1. Previous balance is an overpayment from VAT and NON-VAT transactions.
2. Previous balance is an underpayment from VAT and NON-VAT transactions.
3. Previous balance is from a two month period, no transactions were made for the past two months.
4. Previous balance is from another account number (a transfer was made).
Appreciate your help.
Thank you in advance.