Equivalent Annual Cost Calculator


Managing finances often involves comparing costs and investments over time. One crucial metric for this purpose is the Equivalent Annual Cost (EAC). The EAC helps you evaluate the true cost of an investment or expense on an annual basis, making it easier to assess and compare different financial options. In this article, we’ll introduce you to the concept of Equivalent Annual Cost and provide a user-friendly calculator to compute it.


The Equivalent Annual Cost (EAC) formula is a straightforward way to calculate the annual cost of an investment or expense over a specified number of years. It is calculated using the following formula:

EAC = (Initial Cost + Annual Cost * Number of Years) / Number of Years

How to Use

To calculate the Equivalent Annual Cost using our calculator:

  1. Enter the initial cost of the investment or expense in the “Initial Cost” field.
  2. Input the annual cost associated with the investment or expense in the “Annual Cost” field.
  3. Specify the number of years over which you want to calculate the EAC in the “Number of Years” field.
  4. Click the “Calculate” button, and the EAC will be displayed in the “Equivalent Annual Cost” field.


Let’s say you are considering purchasing a piece of equipment for your business. The equipment costs $5,000 initially, with an annual maintenance cost of $800. You plan to use it for five years. Using the Equivalent Annual Cost formula:

EAC = ($5,000 + $800 * 5) / 5 EAC = ($5,000 + $4,000) / 5 EAC = $9,000 / 5 EAC = $1,800

So, the Equivalent Annual Cost of the equipment is $1,800 per year.


  1. What is the Equivalent Annual Cost (EAC)?
    • The Equivalent Annual Cost (EAC) is a financial metric used to calculate the annual cost of an investment or expense over a specified number of years.
  2. Why is EAC important?
    • EAC helps individuals and businesses assess the true annual cost of a long-term investment or expense, making it easier to compare different financial options.
  3. How do I use the EAC calculator?
    • Enter the initial cost, annual cost, and the number of years into the respective fields. Click “Calculate” to get the EAC.
  4. Can I use the EAC calculator for personal expenses?
    • Yes, the EAC calculator can be used for both personal and business expenses or investments.
  5. What if I enter invalid numbers into the calculator?
    • If you enter invalid numbers, the calculator will prompt you to enter valid inputs.
  6. Is the EAC calculator accurate for complex financial scenarios?
    • The EAC calculator is designed for simple calculations. Complex scenarios may require more advanced financial modeling.
  7. Can EAC be negative?
    • EAC can be negative if the initial cost is high, and the annual cost savings or benefits outweigh it over time.
  8. Is there a minimum or maximum number of years I can use in the calculator?
    • There is no strict limit on the number of years, but it should be a reasonable timeframe for your financial analysis.
  9. Is EAC the same as the annualized cost?
    • EAC is similar to the annualized cost but may include additional factors such as maintenance costs.
  10. How can EAC help in decision-making?
    • EAC allows you to compare different investment or expense options by standardizing their costs on an annual basis.


Understanding the Equivalent Annual Cost (EAC) is essential for making informed financial decisions. Our EAC calculator simplifies the process of computing this valuable metric, enabling you to assess the true annual cost of investments or expenses. Whether you’re a business owner, investor, or individual managing personal finances, the EAC calculator can be a valuable tool in your financial toolkit. Use it to evaluate options, make better choices, and plan for a financially sound future.

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