Forex on AI subscriptions: what Indian startups actually lose in 2026
What the forex markup and the 18% GST on it cost an Indian team paying AI and software tools in dollars, at three monthly spend levels, and how to bring it close to zero.
In this article
Short answer: an Indian team paying AI and software tools in US dollars on a standard 3.5% card loses about 4.13% of that spend to the forex markup and the 18% GST on it. At $1,200 a month that is roughly ₹50,500 a year. Moving dollar bills to a zero-markup card removes almost all of it.
What it costs at three spend levels
At ₹85 to the dollar, markup plus GST on the markup:
| Monthly dollar spend | Yearly spend in rupees | 3.5% card (4.13%) | 2% card (2.36%) | 0% card |
|---|---|---|---|---|
| $300 | ₹3,06,000 | ₹12,638 | ₹7,222 | ₹0 |
| $1,200 | ₹12,24,000 | ₹50,551 | ₹28,886 | ₹0 |
| $5,000 | ₹51,00,000 | ₹2,10,630 | ₹1,20,360 | ₹0 |
These are pure costs: the markup buys nothing, and many cards also pay lower rewards on foreign transactions.
Why it adds up quietly
Software bills are small, recurring and in dollars: a model API, a code assistant, hosting, a database, monitoring, email. Each is a modest line, so nobody notices the markup, but the total recurs every month and grows with the team.
How to bring it down
- List every dollar-billed tool. Three months of statements is enough.
- Move them to one zero or low-markup card. See the cards in our international transactions guide.
- Check rewards on foreign spend for that card. A small markup with good rewards can beat zero markup with none.
- Enable international online use in your bank's app so renewals do not fail.
- Where a tool offers rupee billing, compare. Billing in rupees removes the markup, but check the rupee price is not set higher than the dollar price.
Related reading
- Forex markup explained: how the charge works and what it does to rewards.
- Paying the Claude API from India: GST and TDS for businesses.
- Forex calculator
Card figures on CardPolo come from our catalog, each with an issuer source and a verified date where we have checked it. Spot something out of date? Tell us at [email protected].
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