William and James are twin brothers who are 65 years old.
45 years ago (at the end of the year when he reached 20), William started an IRA and put $2K in the account at the end of each year. After 20 years of contributions, William stopped making new deposits but left the accumulated contributions in the IRA fund. The fund produced returns of 10% per year tax-free.
James started his own IRA when he reached the age of 40 (just after William quit) and contributed $2K per year for 25 years, making his last contribution today. James invested 25% more money in total than William. James also earned 10% on his investments tax-free. What are the values of William’s and James’s IRA funds today?
Vintek sent along the answer in a spreadsheet. It’s eye-opening.
William has $1,365,227. James has $218,364. James invested 25% more than William, but through the magic of compounded returns, William’s IRA fund is worth more than six times as much! For some real fun, download the spreadsheet and plug in your own numbers. I’m having to contribute $5,000/year because I didn’t start in time. How about you?
(Note that the 10% assumption used in the charts and in the spreadsheet is arbitrary and for illustrative purposes only. An 8% return-on-investment is more realistic over the long term, and interest rates on CDs are half that. Still, the same principle applies regardless the rate, as long as the rates are consistent between sample cases.)
http://www.getrichslowly....terest-favors-the-young/