Aged Days Column to Stop Counting After Zero Balance

Aged Days User Report Column currently counts by Dynamic Filtering date and stops at report ran date, regardless of the contract balance. This incorrectly calculates zero balance cases and how quickly the contract was closed out. This column can be helpful to give FDs incentive to close out contracts quickly, but currently the report cannot give accurate numbers for this purpose. Would like this column to stop calculating Aged Days once the contract hits zero balance.