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You may have seen retirement savings examples like this: If you invest $500 per month starting at age 24 with a 7% average annual return, you could have over $1.5 million by the time you turn 65. That sounds incredible — and the math is real. But what those examples rarely mention is that $1.5 million, 41 years from now, will not buy what $1.5 million buys today. At 3% annual inflation, that $1.5 million has the purchasing power of roughly $446,000 in today's dollars. Still a meaningful amount — but a very different picture than the one that $1.5 million paints in your head right now. Understanding "today's dollars" is the key to cutting through the noise and seeing what your future money can really buy.
"Today's dollars" is a way of expressing an amount in terms of what it would buy right now. It strips away the effect of inflation so you can compare apples to apples.
Think of it this way: a gallon of milk costs about $4.25 today. In 20 years, at 3% annual inflation, that same gallon will cost $7.68. The milk won't change — the dollar's buying power will. If someone told you "milk will cost $7.68," that sounds expensive. But if they said "milk will cost the equivalent of $4.25 in today's dollars," you would immediately understand what that means because you buy milk at today's prices right now. That is what "today's dollars" does — it translates a future number into something you can easily understand.
Say you know that you need $10,000 per month to cover all of your living expenses today — housing, food, insurance, everything. That is your Target Monthly Income number in "today's dollars".
But that $10,000 does not stay $10,000. Every year, inflation pushes the cost of the same lifestyle higher. For example, if you retired today at an average inflation rate of 3%, here is what that same $10,000 monthly need becomes, during retirement:
If your retirement begins further in the future, those numbers are even higher.
You are buying the same groceries, using the same amount of electricity, and going out to the same types of restaurants at the same frequency. Nothing about your lifestyle changed — it just costs more every year because with inflation, the dollar is worth less than the year before.
When settling on a retirement plan, keep in mind that as long as inflation continues, the value (or buying power) of a dollar will decrease every year. Make sure you understand retirement target amounts in both future dollar amounts (actual) and their corresponding "today's dollars" value.