# Estimate at Completion (EAC) Calculator

> Forecast the total cost of the project from performance so far.

Page: https://freecalculator.tech/tools/estimate-at-completion-calculator
Last reviewed: 2026-09-15

## Formula

EAC (CPI method) = BAC ÷ CPI; EAC (CPI×SPI method) = AC + (BAC − EV) ÷ (CPI × SPI); ETC = EAC − AC; VAC = BAC − EAC; TCPI = (BAC − EV) ÷ (BAC − AC)

- EAC (CPI method) = BAC ÷ CPI; EAC (CPI×SPI method) = AC + (BAC − EV) ÷ (CPI × SPI); ETC = EAC − AC; VAC = BAC − EAC; TCPI = (BAC − EV) ÷ (BAC − AC).
- Inputs used: Currency, Budget at completion (BAC), Earned value (EV), Actual cost (AC), Planned value (PV), Forecast method.
- Edge handling: Budget at completion (BAC) is required.; Budget at completion (BAC) must be greater than zero.; Budget at completion (BAC) must be no more than 1000000000000.; Earned value (EV) is required.; Earned value (EV) cannot be negative..

## Inputs

- Currency
- Budget at completion (BAC)
- Earned value (EV)
- Actual cost (AC)
- Planned value (PV)
- Forecast method

## Worked example: $500,000 budget, $200,000 earned, $250,000 spent

Forecast assuming future work continues at the current cost performance.
1. Start with Currency: USD, Budget at completion (BAC): 500000, Earned value (EV): 200000, Actual cost (AC): 250000, Planned value (PV): 220000, Forecast method: cpi.
2. Apply the method: EAC (CPI method) = BAC ÷ CPI; EAC (CPI×SPI method) = AC + (BAC − EV) ÷ (CPI × SPI); ETC = EAC − AC; VAC = BAC − EAC; TCPI = (BAC − EV) ÷ (BAC − AC).
3. Forecast assuming future work continues at the current cost performance.

## Common questions

### Where does this formula come from?

PMI earned value management practice guidance: EAC, ETC, VAC and TCPI formulas. See the source link on this page.

### What kind of calculation is this?

Published earned value forecasting formulas; the estimator chooses which assumption about future performance applies. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### What are its limits?

A forecast, not a commitment. Different methods legitimately give different answers.

### How do I use the Estimate at Completion (EAC) Calculator?

Enter the required values for Currency, Budget at completion (BAC), Earned value (EV), Actual cost (AC), Planned value (PV), 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 Estimate at Completion (EAC) Calculator use?

EAC (CPI method) = BAC ÷ CPI; EAC (CPI×SPI method) = AC + (BAC − EV) ÷ (CPI × SPI); ETC = EAC − AC; VAC = BAC − EAC; TCPI = (BAC − EV) ÷ (BAC − AC) 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. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### Can the Estimate at Completion (EAC) 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.

## Limitations and assumptions

- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this estimate at completion (eac) calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Sources

- PMI — https://www.pmi.org/learning/library/earned-value-management-systems-analysis-8026

## Cite this page

- APA: Free Calculator. (2026, September 15). Estimate at Completion (EAC) Calculator. https://freecalculator.tech/tools/estimate-at-completion-calculator
- MLA: "Estimate at Completion (EAC) Calculator." Free Calculator, 15 Sept. 2026, https://freecalculator.tech/tools/estimate-at-completion-calculator.
- Link: Estimate at Completion (EAC) Calculator — Free Calculator, https://freecalculator.tech/tools/estimate-at-completion-calculator