I ran break-even math on popular fuel cards, here's what surprised me
The itch: every fuel card review quotes the headline rate, almost none tell you the monthly spend where the card actually starts paying for itself. So: enter monthly spend + category, get 6 cards ranked by net annual savings after fees, reward caps, and surcharge waivers, plus each card's break-even spend.
Things the math surfaced that I found genuinely non-obvious:
- BPCL Octane below ~Rs 1,800/month of fuel is a net loss. The Rs 1,499 fee eats the 6.25% points.
- Octane's 25X caps at 2,500 points/cycle, so past ~Rs 10K/month of fuel your marginal rate collapses to 0.25%. XTRA's cap bites at ~Rs 13.3K.
- The Swiggy HDFC card earns exactly 0% on fuel (excluded category), so its "break-even on fuel" is never.
- RBL Play's 2-free-tickets benefit needs a Rs 5,000+ SINGLE transaction in the month, not Rs 5,000 total. The tool approximates with total spend and says so.