Stacking Rewards

One purchase, four rewards programs

Most people treat a purchase as a single event. You pay, the card earns its points, and that is the end of it. That is a single dip, and it leaves the other layers sitting on the table.

Stacking, also called double dipping, is the practice of running one transaction through several independent rewards programs at the same time. The programs do not know about each other and do not care that you are using all of them, so each one pays in full: your card's points, a shopping portal's points or miles on top, a statement credit from an offer you activated in your card's app, and the store's own loyalty rewards. Four currencies, one purchase, and not one extra dollar of spending.

Quadruple dipped: one hundred dollar online order, four earning layers

The rates above are illustrative. Portal rates and merchant offers change constantly, so read the stack in front of you rather than trusting these numbers.

The whole thing costs about thirty seconds: click through a portal, tap an offer in your card app, sign in to your store account before checkout. Nothing about what you bought or what you paid has changed.

Where stacking sits in the hierarchy

Stacking is an accelerator, not a strategy of its own, so it goes on top of the two rules that come before it rather than instead of them. If you are working toward a welcome offer, that card is still your spending priority, for the reasons The Power of Welcome Offers works through. Between offers, the base layer is still putting each purchase on the right card for its category, which is the whole of Maximizing Everyday Spending.

Stacking never competes with either rule, because the extra layers attach to the purchase rather than to the card. Click through a portal, then pay with the new card you are trying to hit a minimum spend on, and you collect welcome offer progress, portal points, and store rewards on the same transaction.

Shopping portals do most of the work

An online shopping portal is a link that sits between you and a retailer. Instead of typing the store's address into your browser, you sign in to the portal, search for the store, and click through from there. You land on the retailer's own site and check out exactly as you normally would, at the same price. The retailer pays the portal a commission for sending you, and the portal passes most of that back as points, miles, or cash.

Airlines, hotel programs, and card issuers all run them, and there are independent ones as well. The rate on the same store differs from portal to portal and moves week to week, which is the one piece of homework worth doing before a large order: check two or three, then click through the best one.

Browser extensions make this close to automatic. Install the extension for the portals you use and it pops up on a participating retailer's site, offering to start tracking with one click.

One setting is worth finding before your first order: how the portal pays you. Some pay cash back by default but will pay in a transferable bank currency instead once you link an eligible card, which puts the payout into the same balance a card such as Chase Sapphire Preferred earns into. That is usually the more valuable choice, for the reasons Currency 101 lays out, though it only beats cash if you get real value per point, which Understanding Cents-Per-Point teaches you to check.

If a large purchase is already on the calendar, decide which card it belongs on before you go looking for a portal: the big purchase planner sorts the catalog by what that one purchase would unlock.

Merchant offers, and the click that has to happen first

Most major issuers run a targeted offer program inside their mobile app. They are usually a percentage back at a named retailer, a fixed statement credit once you spend a set amount there, or bonus points. They cost nothing and they stack on top of everything else.

The catch is that they do not apply themselves. You have to open the app, find the offer, and add it to the specific card you intend to pay with, before you pay. Swipe first and the offer is worth nothing, and there is rarely any way to apply it after the fact. Offers attach to one card rather than to the account, so one added to a card you leave at home does nothing.

That makes it a habit rather than a decision. Once a week, open each card's app and add everything you might plausibly use. It takes two minutes, and since the offers are targeted and they expire, the list is worth a fresh look rather than a memory.

Work from your wallet rather than from whatever card is in your pocket, so the weekly pass covers every card you hold.

Dining programs run themselves

Dining rewards networks are the one layer that needs no clicking at all. Airline and hotel programs each run one, usually on shared infrastructure behind the scenes, and joining is free.

You register your cards once on the dining program's site. From then on the network watches for those cards at participating restaurants, bars, and cafes, and deposits miles or points into your loyalty account automatically. It stacks on top of whatever dining multiplier your card already pays, and you never do anything again.

Two limits are worth knowing. The participating restaurant list is short and skews toward independents, so treat it as a bonus that turns up occasionally rather than a reason to pick a restaurant. And a card can normally be registered with only one dining program at a time, so register it with the currency you actually collect.

Tips

• Register your cards with one dining program, in the currency you actually collect, and then forget about it.
• Spend two minutes a week adding merchant offers in each card's app, so the offers are already live whenever you happen to shop.
• Check two or three portals before a large order, since the rate on the same store varies and moves.
• Set your portal payout to a transferable currency if the portal supports it, and link the card that unlocks it.

Traps

• Buying something you did not need, or paying more for it, to chase a portal rate, because no multiplier covers the cost of a thing you did not want or the interest on a balance you carry, as The Golden Mindset Shift spells out.
• Assuming a merchant offer applied itself, which is the single most common way this stack silently pays nothing.
• Trusting the portal's price without checking, since some portals exclude coupon codes or sit on top of a higher base price, which can cost more than the bonus is worth.
• Throwing away the confirmation, because portal tracking does fail sometimes and the order number is what gets it credited.