Learn · Reward portals
Why does Infinia say 16.5%?
HDFC SmartBuy is the bank’s rewards portal. The 16.5% Infinia figure is a ceiling on eligible SmartBuy spend — not the return on every swipe.
What makes up a headline reward rate?
How 16.5% is constructedA percentage like 16.5% depends on three things: how many points the card normally earns × the SmartBuy accelerator for that purchase × what those points are worth when redeemed.
It also only applies while that purchase is eligible and you remain inside the relevant cap. Change any one of those inputs and your realised return changes.
₹10,000 flight: direct vs SmartBuy
Illustrative- Book the flight direct with the card → you earn at the card’s everyday / base rate for that category.
- Book the same ₹10,000 flight through SmartBuy (when the booking is eligible and under the cap) → the card may credit accelerated points under SmartBuy rules — the path behind ceilings like “up to 16.5%”.
- Same underlying purchase, different booking route and reward rules. Compare the portal price and fees before you assume the headline is a win.
What SmartBuy is
Mechanics- HDFC’s rewards / shopping portal: eligible purchases completed through it can follow different earn rules than a direct booking.
- Rates, categories, and caps are product-specific — Infinia’s SmartBuy story is not universal across every HDFC card.
- Merchants and offers on the portal change; verify the live catalogue and your card’s rewards schedule before assuming a rate.
How Money Matters treats the ceiling
RankingsSmartBuy is one way a card’s upside can appear: it changes the earn rules for a specific purchase route. Money Matters does not treat that maximum as the return on every purchase. Card rankings use the documented conservative value; portal upside is shown separately as a ceiling.