5.X — The Math of a Discount #
You want to know what discounting actually costs you? Do the math.
At a 30% gross profit margin — a reasonable baseline for most independent operators — here is what you need to sell to recover the gross profit you gave away:
A 25% discount requires 600% more volume to recover the same gross profit you started with.
Doesn’t that give you a headache?
This isn’t theory. This is arithmetic. Every discount is a permanent, unrecoverable loss of revenue that you are betting volume will replace. Volume that has to come from somewhere. Volume that has to show up consistently, not once. Volume that, at a 25% discount, would need to be six times your current sales just to get back to where you started.
You don’t have a marketing problem. You have a math problem. And the math doesn’t care how many people came through the door.
The [Lost Opportunity Tax] on a discount is not hypothetical — it is the exact dollar amount of margin you surrendered on every cover sold at the reduced price. It does not compound in your favor. It compounds against you — because the guest who came in for the discount expects the discount next time. You didn’t buy loyalty. You bought a transaction. And you paid for it out of your own margin.
Qualifier: these figures use a 30% gross profit margin as an illustrative baseline. Your actual margin will vary by concept, category, and cost structure. Run your own numbers. The ratios will shift — the argument won’t.
