An Exchange Rate Is the Price Tag One Currency Wears Abroad
Three hundred dollars goes under the glass at the airport counter, and the euros that come back look thinner than last summer's stack. Same cash, different price — the exchange rate moved.
An exchange rate is the price of one currency quoted in another. It shifts constantly with trade flows, interest rates, inflation, and how much of each currency people want to hold.
Exchange rates at a glance
- The rate says how much of one currency a unit of another buys.
- A stronger home currency makes foreign purchases cheaper for you.
- A weaker one makes your country's exports cheaper for foreign buyers.
- The rate you actually receive includes spreads and fees.
The math on a moving price
If $1 buys €0.90, a €900 hotel bill costs $1,000 before fees. Let the dollar slip to €0.80 and the same bill costs $1,125.
Nothing about the hotel changed — only the bridge between the currencies did. That's a weakening dollar: each one buys fewer euros than before.
One move, two scoreboards
A weaker dollar stings tourists but helps U.S. exporters, whose goods suddenly look cheaper abroad. Importers feel the reverse, paying more for the same foreign materials.
Currency swings feed inflation, too. Pricier imports show up on domestic shelves, nibbling at your purchasing power.
Why rates move at all
Higher interest rates in one country can pull in foreign capital, lifting demand for its currency. Persistent inflation works the other way by eroding what the currency buys.
Most major currencies float freely on those forces. Some governments instead peg theirs to another currency, spending reserves to defend the announced rate.
The quoted rate isn't your rate
Headline rates are interbank prices for institutions trading in bulk. Cards, banks, and kiosks each add their own spread, and the airport counter usually adds the biggest one.
Businesses with foreign revenue hedge these moves with contracts. Hedging costs money, though, so most firms cover only part of the exposure.
The CFPB's financial glossary keeps the official consumer definitions within reach.
Before the next trip, compare your card's conversion fee against the kiosk's — the difference is real money.