If your restaurant spending only earns you one set of credit card points, you're probably leaving rewards on the table — literally. The latest thinking from The Points Guy makes the case that dining is one of the easiest categories to "stack": combining several loyalty and savings programs on a single meal so you earn two, three or even four times over.

The foundation is a card with a strong dining category. Examples highlighted include the American Express Gold Card, which earns 4 points per dollar at restaurants worldwide (up to $50,000 in spending per calendar year, then 1x), and the Citi Strata Elite, which earns 6x at restaurants on Friday and Saturday nights between 6 p.m. and 6 a.m. Eastern as part of its CitiNights program, and 3x at other times.

On top of card points, there are statement credits worth knowing about. The Chase Sapphire Reserve offers up to $150 in credits each half-year through the Sapphire Reserve Exclusive Tables program on OpenTable. Amex Gold holders get up to $50 in semiannual credits at qualifying U.S. Resy restaurants, plus monthly credits at select merchants and Dunkin'. The Amex Platinum includes up to $100 per quarter for eligible Resy and Tock purchases. One TPG writer uses his Platinum at a Resy restaurant once a quarter — even at just 1x earning, the credit makes it worthwhile.

Then there are restaurant-side programs. Chains run their own loyalty schemes, booking through OpenTable as a logged-in Regulars member earns points on completed reservations, and some restaurants participate in app-based platforms like InKind or Blackbird.

The third layer is card-linked dining programs — Rove Dining, Bilt Neighborhood Dining, AAdvantage Dining and similar — which pay you rewards simply for paying with a registered card. The catch: a card can generally only be enrolled in one Rewards Network-powered program at a time, and switching may silently drop it from the first, so pick the one whose rewards you value most.

Why does this matter for travellers? Frequent diners can quietly accumulate serious miles and points toward flights and hotels from meals they'd be paying for anyway. A full stack at a participating restaurant might look like this: earn your card's dining rewards, trigger an issuer merchant offer you activated beforehand, collect OpenTable points for the reservation, and earn through a card-linked program by paying directly — four rewards on one bill.

But the article is blunt about the fine print. Some programs explicitly ban stacking — Rove says its dining rewards can't be combined with other dining loyalty programs, only credit card rewards. Many offers (SimplyMiles, Upside, Amex, Chase, Citi and Capital One merchant offers) require activation before you dine, not after. And apps like InKind and Blackbird complicate things: the charge may show up as "InKind" rather than the restaurant's name, so restaurant-specific card offers and linked-card programs may not trigger, and any portion paid from an InKind balance never touches your rewards card at all.

The takeaway: check how each program tracks payments before you sit down. Done right, dinner out becomes a small points factory. Done carelessly, you'll earn one layer and miss the rest.