Enter the current month
Use cumulative spend through the end of the last complete day.
What the projection means
The plan divides the monthly budget evenly across calendar days. Planned spend to date equals monthly budget × elapsed days ÷ days in month. Month-end projection extends the average daily spend so far across the full month. The daily amount needed divides the remaining budget by the remaining days.
Projected month-end = spend to date ÷ elapsed days × month days
Required daily spend = remaining budget ÷ remaining days
Where straight-line pacing fails
Spend is rarely uniform. Weekday demand, promotions, launch dates, inventory, auction prices and platform learning can justify an uneven plan. A campaign that intentionally spends more on weekends should be compared with a weighted daily plan rather than this straight line.
The projection also says nothing about efficiency. Being exactly on budget is not success when conversion quality deteriorates. Review pacing together with ROAS, CPA, contribution and inventory constraints.
Use this result in a review
- Confirm the spend total uses complete days and one account timezone.
- Record planned changes such as promotions or campaign launches.
- Compare projected spend with the budget, then check whether ROAS and CPA remain inside your limits.
- Change budgets deliberately; do not chase a daily variance caused by reporting delay.
Decision boundary: this tool reports pace, not whether additional spend will produce additional profitable sales.
Examples are illustrative. Calculations remain in this browser. Read the calculation method.