I'm trying to create a formula to show remaining billing from a range of costs across different columns for each project number in a pivot sheet. Ideally I would like the "Remaining Billing" column to be dynamic so after a certain date the column "re-sums" the remaining cost.
Example:
After Dec 31 (Total Planned Billing = Remaining Billing)
After March 31 (Total Planned Billing - 23Q1 = Remaining Billing)
After June 30 (Total Planned Billing - (23Q1 + 23Q2) = Remaining Billing)
etc...
Any guidance would be appreciated.