Need help with "Accounts Receivable calculation"

[Joel_112]

I am able to see what invoices are outstanding? fields:

inv_date

inv_datePaid

invElsaped calculation > If(inv_datePaid="","", inv_datePaid - inv_date)

My terms are net 30 days,so an invoice is not past due until 30 days have past.

This is what I have tried so far:

field: day_outstand calculation > Today- inv_date

days_PastDue calculation > Today- inv_date + 30

I'm doing something wrong...please help

[Kurt Knippel]

What is the goal? What are your trying to do with this date?