2.5 Costs of Inflation
Unanticipated inflation redistributes wealth — borrowers with fixed rates gain, lenders and savers lose — and adds menu, shoe-leather, and uncertainty costs.
The big cost of UNANTICIPATED inflation is redistribution. Borrowers with fixed nominal interest rates win because they repay in dollars worth less than expected; lenders, savers, and anyone on a fixed income lose. The logic runs through real rate ≈ nominal rate − inflation: surprise inflation shrinks the real rate actually paid.
Even anticipated inflation has costs: menu costs (constantly reprinting prices), shoe-leather costs (extra trips and effort to avoid holding cash that loses value), and distorted price signals that make planning and long-term contracts harder.
The key exam distinction is anticipated versus unanticipated. If everyone correctly expects 5% inflation, lenders build it into nominal rates and nobody is fooled; the arbitrary winners and losers appear only when actual inflation differs from what was expected.
Key terms for 2.5
Practice the math
Reversing the winners: saying lenders gain from unanticipated inflation. Lenders locked into fixed nominal rates get repaid in cheaper dollars — borrowers gain, lenders and savers lose.
Get AP Econ exam tips in your inbox
Occasional emails with study tips, new interactive graphs, and exam-season reminders. Free — no spam.
No spam. Unsubscribe anytime.