The Finance Algorithm
§ Tool · tier 1 · independent

Foreign Transaction Calculator.

Calculate the true cost of using your credit card overseas

CalculatorFree, no signupOn-deviceupd May 2026
Inputs
Your numbers
500
1.55

1 foreign unit = X AUD

%
3%

Usually 2-3.5% on most cards

%
5%

Dynamic currency conversion markup - always decline!

Math updates live as you change inputs · AI runs on submit

Awaiting inputs

Move the sliders or type in the form on the left — the math updates live as you go. Click Get AI verdict when you want a written analysis.

Using your regular credit card overseas can cost 3-8% extra in hidden fees. This calculator shows your true cost and how much a travel card could save.

§ Worked examples

Real-world scenarios

€500 Purchase Comparison

€500 purchase at 1.65 AUD/EUR. Standard card (3% fee) vs travel card (0% fee).

Inputs

amount:500rate:1.65standardFee:3travelFee:0

Standard card: $825 × 1.03 = $849.75. Travel card: $825. Savings: $24.75 on one transaction!

§ FAQ

Questions Australians ask

§ Glossary

Plain-English definitions

Foreign Transaction Fee
A fee charged by your card issuer for purchases in foreign currency, typically 2-3.5%.
Dynamic Currency Conversion (DCC)
When a merchant offers to charge in AUD instead of local currency - always more expensive.
Exchange Rate Margin
The markup Visa/Mastercard add to the wholesale exchange rate (usually ~0.5%).