The Real Cost of Forex Markup: What Indians Overpay on Cards Abroad (2026)
Quick verdict
Most Indian cards charge a 3.5% forex markup — and 18% GST applies on that markup, pushing the effective cost to about 4.13%. Over a ₹15 lakh study year abroad, that is roughly ₹62,000 in avoidable charges. A zero-forex card removes it entirely.
Indians are travelling and studying abroad in record numbers, yet the true cost of paying by card overseas stays hidden. It is not just the headline markup — a second, less-discussed charge sits on top. This study breaks down what you actually pay in 2026, and what it adds up to over a trip or a year.
The hidden math
| Overseas spend | Markup @3.5% | +18% GST on markup | Effective total (~4.13%) |
|---|---|---|---|
| ₹1,00,000 | ₹3,500 | ₹630 | ₹4,130 |
| ₹2,00,000 (a holiday) | ₹7,000 | ₹1,260 | ₹8,260 |
| ₹5,00,000 (frequent traveller/yr) | ₹17,500 | ₹3,150 | ₹20,650 |
| ₹15,00,000 (student/yr) | ₹52,500 | ₹9,450 | ₹61,950 |
Try your own numbers in our forex markup calculator.
The GST layer nobody mentions
The 3.5% markup is widely quoted, but the 18% GST charged on the markup fee is not. Crucially, GST applies only to the markup, not your whole transaction — so on ₹1,00,000 spent at 3.5%, the markup is ₹3,500 and GST is 18% of that, i.e. ₹630. It sounds small per transaction, but across a year of overseas spending it compounds into real money, and it is why the effective rate on a standard card is closer to 4.13% than 3.5%.
What it adds up to
Three typical profiles show the scale of avoidable cost in 2026:
- The tourist (₹2 lakh on one overseas holiday): about ₹8,260 lost to markup + GST.
- The frequent traveller (₹5 lakh a year abroad): about ₹20,650 a year.
- The student (₹15 lakh a year in living costs and fees paid by card): about ₹62,000 a year — more than a month of rent in many cities.
How to pay zero
The markup is entirely avoidable. A zero-forex debit card charges 0% and is the simplest fix for most people, especially students. Frequent flyers may prefer a low-markup travel credit card for the rewards, or a prepaid forex card to lock in rates. See our best debit cards guide for the full comparison.
Frequently asked questions
What is the real forex cost on Indian cards?
About 3.5% markup plus 18% GST on that markup, giving an effective rate near 4.13%. Some premium travel cards charge less, and certain debit cards charge 0%.
Is GST charged on my whole overseas spend?
No. The 18% GST applies only to the markup fee, not the full transaction. On ₹1,00,000 at 3.5%, GST is 18% of ₹3,500 = ₹630.
How much does a student overpay in a year?
At ₹15 lakh of annual overseas spend on a standard card, roughly ₹62,000 in markup + GST — almost all of it avoidable with a zero-forex card.
How do I avoid forex markup completely?
Use a zero-forex debit card (0% markup), or a low-markup travel credit card / prepaid forex card. See our zero-forex and travel card guides.
Sources & references
Effective rates computed from standard Indian card markup (~3.5%) and 18% GST on the markup fee; confirm your card’s specific markup with your issuer. Use our forex markup calculator for your own figures. For information only.