How to Determine What My IRA Will Be Worth

Calculate the future value of your nest egg.
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Determining the future value of your investments requires first making some assumptions about how much you will save each year, when you plan to retire and how you think the stock market will perform over the life of your investments. You must then perform some rather complex financial calculations to determine a future value. Thankfully, free online financial calculators can do the heavy lifting for you.

Step 1

Determine how much you plan to contribute to your IRA each year. As of 2012, you can contribute a maximum of $5,000 (or 100 percent of earned income, whichever is less) to a traditional IRA if you are under age 50. Investors over age 50 can contribute a maximum of $6,000. Although the same contribution limits apply to a Roth IRA, your contributions could be limited by tax filing status or high income. You can always contribute the maximum to a traditional IRA.

Step 2

Determine at what age you plan to retire and begin taking money out of your IRA to live on. You can make IRA withdrawals without penalty beginning at age 59 1/2. You must begin taking minimum withdrawals from a traditional IRA beginning in the year after you turn 70 1/2.

Step 3

Decide on a conservative average annual return for your investments. Although the S&P 500 Index has historically averaged about 10 percent annualized returns over the long term, you need to factor in your costs and your investment mix. For example, if you split your investments between stock and bond investments, you should expect lower average annual returns. Consider using the more conservative average returns reported by The American Association of Individual Investors: about 7 percent for stock allocations, and between five and 6 percent for an investment mix of stocks and bonds.

Step 4

Choose a free online calculator using the search terms, "future value calculator with additions," to run your assumptions. Some calculators will ask you to choose a compounding interval; that is, how often you expect to receive interest on your interest. The most conservative option is annually.

Step 5

Complete the calculation fields and press the "calculate" button to see your result. You can change assumptions to see different results on the calculator.

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