Mid-market rate versus bank exchange rate
Why Google, the ECB, Wise, banks, cards, cash counters, and merchants all show different exchange rates for the same currency pair — with worked yen examples.
Rate sites show the mid-market benchmark, while banks, cards, and cash counters add a margin — so the same currency pair looks different everywhere, and the gap is your cost.
Key points
- Google and the ECB display a benchmark (mid-market or reference) rate you generally cannot transact at.
- Wise quotes the mid-market rate and charges a visible fee; banks fold a margin into a TTS/TTB customer rate.
- Cash counters and airport kiosks carry the widest spreads; merchant DCC is usually the worst of all.
- To compare, convert everything to “yen you part with for the recipient amount” at the same moment.
Who shows which rate
Rate sites (Google, XE) and central-bank pages (the ECB reference table) show the mid-market or reference rate — a benchmark near the interbank midpoint that retail customers generally cannot execute at.
Wise quotes that mid-market rate and lists its fee separately, so the markup is visible. Traditional banks instead publish a TTS/TTB customer rate with the margin already inside it, so the fee looks small while the rate does the work. Cards apply the network rate plus an issuer foreign-transaction fee. Cash counters and airport kiosks post the widest buy/sell spreads. Merchant or ATM dynamic currency conversion (DCC) is usually the most expensive of all.
A worked yen example
Suppose the mid-rate is ¥160.235 per USD and you want to send USD 1,000. At the benchmark, that is ¥160,235. A bank customer rate of ¥161.235 (a ¥1 margin) makes the same USD 1,000 cost ¥161,235 — about ¥1,000 more from the rate alone, before the fixed transfer fee. A cash counter quoting ¥168 would cost ¥168,000.
The lesson is to convert every option into the yen you actually part with for the same recipient amount, at the same moment, and ignore which line is called “fee” versus “rate.”
Who this is for
- Anyone comparing a bank quote to a rate site
- Travellers deciding where to change money
What this is not
- Readers wanting a rate prediction
- At a merchant or ATM, always choose the local currency and decline conversion into yen (DCC).