The rate you see is not the rate you get
The mid-market rate — the midpoint between what buyers bid and sellers ask — is what Google and financial news sites quote. It is the true value of one currency against another, and almost nobody gets it.
What you actually receive is the mid-market rate minus a margin, plus any fixed fee. The margin is where most of the cost hides, because it is quoted as an "exchange rate" rather than a charge.
| Provider | Margin | Cost on $1,000 |
|---|---|---|
| Airport bureau de change | 7% – 15% | $70 – $150 |
| High-street bank | 3% – 5% | $30 – $50 |
| Credit card abroad | 1% – 3% | $10 – $30 |
| Online broker | 0.5% – 2% | $5 – $20 |
| Specialist transfer service | 0.4% – 1% | $4 – $10 |
Dynamic currency conversion
When a card terminal abroad offers to charge you in your home currency, decline it. That is dynamic currency conversion, and the rate applied is set by the merchant's provider — typically 3% to 8% worse than your card issuer's. Always pay in the local currency.
The conversion arithmetic
Inverse rate = 1 ÷ Rate
Effective rate = Rate × (1 − Margin ÷ 100)
- Rate
- Units of the target currency per unit of the source
The margin and fee cost ₹2,910 — about 3.5% of the transfer, most of it invisible in the quoted rate.
Note that a 3% margin does not cost exactly 3%, because the fixed fee compounds the effect on smaller amounts. On $100 rather than $1,000, that same $5 fee alone is 5%.
Getting a better rate
- Compare the amount received, not the fee. It is the only number that captures both margin and fee.
- Always pay in the local currency when a terminal offers a choice.
- Use a card with no foreign transaction fee for travel — many now apply the network rate with no markup.
- Avoid airport and hotel exchange. They price for captive customers and margins reach 15%.
- For large transfers, ask for a quote. Above roughly $10,000, many providers will improve on their advertised rate.
- Watch the weekend. Markets close, and providers widen spreads to cover the gap risk.
For prices including tax in a foreign market, see the sales tax calculator or the GST calculator.
Frequently asked questions
Why is the rate I get worse than the one online?
Because published rates are mid-market — the midpoint between buy and sell prices in the interbank market. Providers add a margin on top, typically 0.4% to 5% depending on who you use.
The margin is often not disclosed as a fee, which is why comparing the final amount received is the only reliable test.
Should I pay in local currency or my own when abroad?
Always local. Choosing your home currency triggers dynamic currency conversion, where the merchant's provider sets the rate — usually 3% to 8% worse than your card issuer would give.
The terminal will make the home-currency option look like the convenient default. Decline it.
Where is the cheapest place to exchange money?
Specialist online transfer services generally offer the narrowest margins, around 0.4% to 1%. A no-foreign-fee credit card is usually best for spending abroad.
Airport bureaux are consistently the worst, with margins reaching 15%.
What does the inverse rate mean?
It is the rate in the opposite direction. If 1 USD equals 83.50 INR, the inverse is 1 ÷ 83.50 = 0.01198, so 1 INR equals about 0.012 USD.
Checking the inverse is a quick way to catch a rate quoted the wrong way round.
Does this calculator use live exchange rates?
No. It uses indicative defaults you can overwrite. Rates change continuously, and a static figure would be misleading.
Enter the rate your provider is actually offering to get a number you can act on.