A lot of companies pay there invoices based on the month rather than the date its due. Which for us and a lot of other companies that is fine. However when you do an Aged debt report, it is 1-30 days and 31-60 days etc. Having to options for the aged debt to be all invoices in January, all invoices in Feb etc would certainly benefit us but loads of other companies to.
Guest
In the Customer Defaults on the Ageing/Due date tab there is an option for Calendar Monthly Ageing - does this not do what you want?
(AFAIK the headings do NOT change regardless of what parameters you have set for ageing - we do our ageing externally via exported data as Sage can't handle our needs.)