Enterprise Contract Discount Evaluator
See the lifetime margin a discount quietly gives away.
A 20% discount on a 3%-year deal hands back $60,000 of profit, a 25% cut to your margin on this account, because the discount comes straight off the top. Trade any discount for something in return, longer term, case study, or expansion.
Discounts hit profit far harder than revenue because your cost-to-serve doesn't drop with the price. A 20% discount at 80% margin erodes profit by ~25%.
About this calculator
A discount comes straight off the top of revenue, but your cost-to-serve doesn't drop with the price, which means a 20% discount can erode profit far more than 20%. This evaluator quantifies exactly how much lifetime margin a discount gives away across a multi-year contract, making the real cost of "just take 20% off" visible before you agree to it in the negotiating room.
How to use it
- Enter the list ACV, the undiscounted annual contract value.
- Enter the discount being offered as a percentage.
- Enter the contract term in years, and your gross margin percentage.
- Read the discounted ACV, the lifetime margin given away over the term, the percentage erosion to your profit margin, and what you keep in lifetime profit.
Methodology
Annual cost-to-serve is list ACV times (1 minus gross margin), the same absolute cost regardless of what price you actually charge. Profit per year at full price is list ACV minus that cost; profit per year at the discounted price is discounted ACV minus the same cost, since cost-to-serve doesn't change with the discount.
Lifetime margin given away is the difference between full-price and discounted annual profit, multiplied by the contract term in years. Margin erosion percentage is that same annual profit difference divided by full-price annual profit, showing the disproportionate hit to profit versus the hit to revenue.
The disproportionate effect comes directly from the fixed cost-to-serve: at 80% gross margin, a 20% discount does not cut profit by 20%, it cuts profit by roughly 25%, because the discount comes entirely out of the margin dollars, not out of the cost base. The lower the starting margin, the more brutal this multiplier effect gets.
The tool grades erosion into three bands, under 20% is treated as tolerable, 20-39% as a caution zone, and 40%+ as a steep concession, worth trading for something concrete (longer term, expansion commitment, case study rights) rather than giving away for goodwill alone.
FAQ
Because your cost-to-serve is fixed regardless of the price charged. The discount comes entirely out of the profit margin, not proportionally out of both revenue and cost, so at 80% gross margin a 20% price cut removes 20% of revenue but roughly 25% of profit, since profit was already a smaller base than revenue.
The lower your starting gross margin, the more a given discount percentage erodes profit, because there's less margin cushion to absorb it. A 20% discount at 50% gross margin is dramatically more damaging to profit than the same 20% discount at 90% margin.
Anything that offsets the margin given away in dollar terms, a longer contract term (locks in the erosion but also locks in the revenue and reduces churn risk), an expansion commitment, a case study or reference right, or upfront payment terms that improve your cash position.
It cuts both ways: a longer term multiplies the total lifetime margin given away (since the erosion compounds per year), but it also locks in more total revenue and reduces the risk of losing the account sooner. This calculator shows the lifetime margin cost explicitly so you can weigh that trade-off with real numbers instead of a gut feel.