Calculator

Promotion Payback Calculator

Promotions get approved because they move orders, but what matters is whether they repay their own spend fast enough once discounting has already softened contribution. Use this calculator to see whether the campaign pays back in time or just burns cash.

Estimate payback period from promo contribution
See how many incremental orders are needed to recover spend
Compare promo excitement against actual contribution output

Calculate promotion payback

Enter promotion spend, baseline AOV, contribution margin, discount depth, incremental orders, and the campaign window in days. The result shows how much contribution the promotion actually generates and how long it takes to recover.

Promotion spend Media, placement, creative, or promo support spend. Average order value Baseline order value before the discount is applied. Contribution margin % Baseline contribution share before the promotion. Discount rate % Discount depth attached to the promotion. Incremental orders Additional orders the promotion is expected to generate. Promo duration days Campaign or promotion window used to estimate payback speed.

Three promotion scenarios.

Formula

What the payback model asks

Total promotion contribution = Adjusted contribution per promo order × Incremental orders

Payback period = Promotion spend / (Total promotion contribution ÷ Promo duration days)

This is a contribution payback model, not a gross revenue model. It assumes the discount already softens each promo order and asks whether the remaining contribution still repays the campaign quickly enough to deserve the spend.

Where promotions get approved too loosely

Teams use order count as the win condition and never price the discount properly.
Campaign spend is judged against revenue instead of contribution.
Promotions feel successful during the run even when payback comes too slowly.

Useful next step

Once the payback profile is clear, compare it against the offer tradeoff and AOV lift so you can decide whether the promotion needs a lighter discount or better incremental order response.