Why running the same promo on UberEats and DoorDash hurts your takehome
3 MIN READ · 624 words
Most independent operators run the same percent-off promo across UberEats, DoorDash, and Grubhub at the same time. It feels efficient. The math says otherwise.
Here's a real $25 order, with all three apps running a 20 percent off promo simultaneously. We'll trace what the operator actually nets.
The headline math
| Line item | UberEats | DoorDash | Grubhub |
|---|---|---|---|
| Customer pays | $20.00 (after 20% off) | $20.00 | $20.00 |
| Platform commission (avg) | -$6.00 (30%) | -$6.40 (32%) | -$5.80 (29%) |
| Marketing fee on promo | -$1.20 | -$1.40 | -$1.00 |
| Payment processing | -$0.60 | -$0.65 | -$0.55 |
| Tier visibility tax (Q1 add) | -$0.50 | -$0.40 | $0 |
| Operator gross | $11.70 | $11.15 | $12.65 |
| Food cost (30%) | -$7.50 | -$7.50 | -$7.50 |
| Labor allocation per order | -$4.00 | -$4.00 | -$4.00 |
| Packaging | -$0.40 | -$0.40 | -$0.40 |
| Operator net | -$0.20 | -$0.75 | +$0.75 |
That's not a typo. On UberEats and DoorDash, when you run a 20 percent promo on top of standard commissions, you lose money on every order. Even on Grubhub, you're netting less than a dollar.
Why running them all at once compounds the damage
The platforms compete on visibility. When you run the same promo across all three, customers who would have ordered on the highest-margin app get pulled to whichever app shows them the deal first. You don't get more orders. You just get the same orders at a worse split.
In our data across 30 operators in the last 60 days, simultaneous promos correlate with a 12 to 18 percent erosion in average effective takehome compared to the same promos run sequentially.
The floor math: what we actually do
Step one is setting your floor. Most operators we work with set a $4.50 to $6 net per delivery order minimum. That number accounts for food cost, labor, packaging, plus a small margin for keeping the lights on.
Step two is watching all three platforms continuously. When one platform's effective takehome drops below the floor (because of a new fee, a promo overlap, or a margin squeeze), Promo Sync adjusts pricing on the other two so total takehome stays above your floor across every channel.
The result we see in the first 60 days of running this: 14 to 22 percent higher net per delivery order. Same volume. More money kept.
When to run promos at all
Promotional runs should be timed to slow days, not stacked on top of high-volume days. Running a 20 percent off promo during your Friday dinner rush is the worst combination: high commission day, marketing fee on top, plus you're discounting orders that would have come in at full price anyway.
The pattern that works: weekday lunch promos to capture order volume during slow hours, never weekend dinner. Synchronize across platforms so you're not competing with yourself.
The take
The delivery apps aren't your enemy. The math is. Most operators are running their promos like 2018 (when commission rates were 12 to 18 percent) instead of 2026 (when they're 28 to 35 percent all-in).
If your effective takehome on delivery is below 60 percent of order value, you're not running a margin business. You're running a marketing channel for the platforms. The fix isn't cutting menu prices. The fix is coordinating across platforms and pricing for your floor.
Want the math on your business?
Tableside AI Promo Sync watches all three apps continuously and keeps your effective takehome above your floor across every channel. Standalone or bundled into the monthly Tableside AI package alongside Digital Presence Management and AI Consulting. Pricing on request.
Schedule a fit call and we'll run the math on your last 30 days of delivery orders. No commitment.