See how inflation erodes purchasing power over time and what future prices will look like.
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Future equivalent = Amount x (1 + rate)^years (what prices cost then). Today-equivalent value = Amount / (1 + rate)^years (what that future amount buys in today’s money).
Most developed economies target around 2% per year; recent years have occasionally run well above that. Over 10 years at 3%, prices rise roughly 34% — a third more than most people intuit.
Short-term cash in high-yield accounts keeps pace at current rates; longer horizons in growth assets (broad index funds) have historically outpaced inflation. Cash left in a 0% account is a slow, guaranteed loss of purchasing power.