**They are as follows:**

- Formula 1. EAC = AC + Bottom-up ETC. This formula is used when the original estimation is fundamentally flawed. …
- Formula 2. EAC =BAC/Cumulative CPI. …
- Formula 3. EAC = AC + (BAC – EV) …
- Formula 4. EAC = AC + [BAC – EV / (Cumulative CPI x Cumulative SPI)]

## What is the formula for estimate at completion?

Estimate at completion (EAC) is calculated as budget at completion divided by cost performance index. Formula 1 for EAC is as follows: **Estimate at completion (EAC) = Budget at completion (BAC) / Cost performance index (CPI)**

## Which two things would allow you to calculate a project cost estimate at completion?

In order to calculate the estimate at completion (EAC), you must know **the budget at completion (BAC) and the cost performance index (CPI)**. With this information, the calculation is as simple as dividing the two.

## How do you calculate EAC?

**The formulas to calculate the EAC based on these 4 approaches are:**

- EAC with bottom-up ETC: EAC = AC + ETC.
- EAC with ETC at budgeted rate: EAC = AC + BAC – EV.
- EAC with ETC based on present CPI: EAC = BAC / CPI.
- EAC considering CPI and SPI: EAC = AC + ((BAC-EV) / (CPI x SPI))

## What is the best way to calculate the Estimate at completion EAC when original estimates are no longer valid?

**They are as follows:**

- Formula 1. EAC = AC + Bottom-up ETC. This formula is used when the original estimation is fundamentally flawed. …
- Formula 2. EAC =BAC/Cumulative CPI. …
- Formula 3. EAC = AC + (BAC – EV) …
- Formula 4. EAC = AC + [BAC – EV / (Cumulative CPI x Cumulative SPI)]

## What is estimated cost completion?

Estimate at completion is **the forecasted cost of the project, as the project progresses**. There are a number of different ways to determine the EAC. The most common way to determine EAC is a “bottoms-up” formula where the actual costs (AC) are added to the forecasted remaining spending – the estimate to complete (ETC).

## What is the difference between estimate to complete and estimate at completion?

**Estimate at Completion is used for forecasting the amount of money at the end of the project.** **Estimate to Complete is the amount of money needed to finish the project at any point**.

## How do you calculate variance at completion?

VAC is calculated by **subtracting the EAC from the BAC**. Inturpreting the results is equally simple. If the VAC is a positive integer, that indicates the project is under budget. If the VAC is a negative integer that indicates the project will be over budget.