Budget At Completion Calculator
Calculate Budget At Completion step by step: BAC = sum of the budgets of all work packages in the performance measurement baseline.
In short
Formula: BAC = sum of the budgets of all work packages in the performance measurement baseline.
What this calculator does
Calculate Budget At Completion step by step: BAC = sum of the budgets of all work packages in the performance measurement baseline. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), Work package 1 budget, Work package 2 budget, Work package 3 budget, and the other shown inputs into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this earned value calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- Work package 1 budget
- — number value.
- Work package 2 budget
- — number value.
- Work package 3 budget
- — number value.
- Work package 4 budget
- — number value.
- Work package 5 budget
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Definitions follow the PMI PMBOK Guide and the ANSI/EIA-748 earned value management standard.
BAC is the total planned value at the end of the project.
Management reserve is not part of BAC; contingency reserve held inside control accounts is.
BAC = sum of the budgets of all work packages in the performance measurement baseline.
Inputs used: Currency (symbol only, never converted), Work package 1 budget, Work package 2 budget, Work package 3 budget, Work package 4 budget, Work package 5 budget.
Worked example
Five work packages
- BAC = 80,000 + 250,000 + 90,000 + 50,000 + 30,000 = $500,000.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Limited to five entries.
- Does not time-phase the budget.
- Excludes management reserve by definition.
- Results are planning estimates built only from the figures you enter. They are not a guarantee of cost, schedule or delivery, and they do not replace your organisation's own project controls.
- The result depends on the values you enter for this budget at completion calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Common questions
Is BAC the same as the contract price?
No. BAC is the cost budget for the work. Price adds fee or profit, and may include management reserve.
When does BAC change?
Only through formal change control, such as an approved change order. Otherwise it stays fixed so that performance can be measured against it.
What if I have more than five work packages?
Add them together into five groups, or sum the control accounts first. The total is what matters.
How do I use the Budget At Completion Calculator?
Enter the required values for Currency (symbol only, never converted), Work package 1 budget, Work package 2 budget, Work package 3 budget, Work package 4 budget, and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Budget At Completion Calculator use?
BAC = sum of the budgets of all work packages in the performance measurement baseline. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the Budget At Completion Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Related tools
Calculate Planned Value step by step: PV = BAC × planned % complete at the status date.
Calculate Earned Value step by step: EV = BAC × actual % complete.
Calculate Actual Cost (Earned Value) step by step: AC = sum of all costs actually incurred for the work performed to the status date.