Can anyone show me the logic for calculating the 30, 60,90,120 ages of
items in an account. The calculations are complicated by the fact that
there might be new invoices and down payments in the period under question
eg:
Date/description/amount/balance
1 May /Invoice/$1000/$1000
15 June/Payment/$250/$750
28 June/Invoice/$500/$1250

Thanks
Laurence