Question:
❓ You have $100,000 sitting in a savings account earning 0.5%. With inflation averaging 3% a year, what is the real (inflation-adjusted) purchasing power of that money in 20 years?
A) About $135,000, slightly more
B) About $100,000, roughly the same
C) About $75,000, meaningfully less
D) About $61,000, almost 40% less
✅ Answer: D)
About $61,000, almost 40% less
Here’s why:
$100,000 sitting in a savings account at 0.5% will buy what about $61,000 buys today, once you account for 20 years of 3% inflation. Two things happen at the same time, and they pull in opposite directions. Your $100,000 grows in the account, but the dollar itself shrinks in what it can buy.
The savings account earning 0.5% turns $100,000 into about $110,500 after 20 years. That part looks fine. But inflation averaging 3% a year means prices rise by roughly 81% over that same 20-year stretch. So $110,500 in 20 years buys what about $61,000 buys today.
You haven’t lost the money. You’ve lost almost 40% of what it can do for you, which is functionally the same thing. This is part of why people leave so much cash sitting still, even when they know better.
Why the others are not correct:
A) This would require the savings rate (0.5%) to beat the inflation rate (3%). It does not.
B) This assumes inflation does not exist. It does, and it compounds every year.
C) Closer, but it underestimates how punishing 20 years of 3% inflation actually is. Inflation compounds the same way returns do, and the back half of the timeline does most of the damage.
Takeaway:
Cash sitting idle isn’t safe. It loses purchasing power every year to inflation, and over two decades the loss is roughly 40%. The real risk of "just keeping it safe" is being unable to afford the life you saved for.
A real financial strategy treats cash as one piece of the picture, not the whole picture. Sitting in cash to avoid the market has its own cost, just like pulling out at the wrong time does.
Inside the TWC Network, we help you map the cash you actually need to keep accessible against the dollars that should be working harder for you. So the savings you’ve worked for don’t lose value while they wait.
