Sales Discounting Does Not Buy Win Rate: A Teardown of the Math

Cut the price by a fifth and you must close a quarter more deals just to stand still. Winning by Design, the sales-training firm run by Jacco van der Kooij, published that sum in November 2022, and reps still approve discounts without ever running it.

This piece is for the sales leader who owns the discount approval policy and for the AE who is asked to cut price on the last call of the quarter. It settles one question: should a concession ever be given for nothing?

What the Paper Says

The paper argues that deeper discounts "rarely increase win rates enough" to replace the revenue they give away. Its example: to offset a 20% discount, win rate has to climb from 20% to 25%, which the page calls an unrealistic jump for most teams.

Who Ran It, and On What

The page is the public summary of a nine-page paper by Winning by Design, and it describes scenario analysis blended with real sales data. It publishes no sample size, no date range and no formulas, so you cannot rebuild the dataset behind it. You can only check the logic, as the summary page presents it.

Read it knowing the publisher sells a value-led selling method, and that method treats discounting as a risk. That interest does not make the arithmetic wrong. It does mean the behavioural claims deserve more doubt than the sums.

Three Numbers Worth Keeping

25% is the lift a 20% cut demands

Price after a 20% cut is 0.8 of list, so unit volume must grow by 1 divided by 0.8, which is 1.25, before revenue is back where it started. The same sum works for any cut. The table below is our own arithmetic on the stated example from Winning by Design.

Discount given	Extra deals needed to hold revenue
10%	about 11%
15%	about 18%
20%	25%
30%	about 43%

What to do: print the table and tape it to the approval form.

28% is the loss when the discount backfires

The paper pairs a 20% cut with a 10% fall in win rate and gets a 28% revenue loss, because 0.8 times 0.9 is 0.72, per the same page. Its explanation draws on The JOLT Effect, which holds that a price move can deepen buyer doubt instead of easing it. That is a hypothesis, not a measurement.

What to do: read that loss as the shape of the downside, never as a forecast.

Revenue is the generous way to count

Every figure above counts revenue. Profit is harsher, because cost to serve does not fall when price does. Take a product that costs 20 to deliver and lists at 100. A 20% cut leaves 60 of gross profit where there were 80, so volume must rise by a third, not a quarter. This is our own sum, built on the 20% example in the paper.

The same logic sits behind a classic pricing result. Michael Marn and Robert Rosiello of McKinsey argued in Harvard Business Review in 1992 that the right price lifts profit faster than extra volume does, and that the wrong one erodes it just as quickly. What to do: ask finance for gross margin by product before you set any discount ceiling.

Where the Model Stops Being Evidence

• It holds volume constant by design. A discount that lands a flagship logo, a public reference or a three-year term changes the sum, and the model does not price those in.
• It averages across segments. A self-serve buyer comparing three tools on a pricing page and an enterprise committee behave differently.
• The behavioural half is borrowed. The claim that discounts lower win rate rests on a book about indecision, not on a test of discounting.
• Older, vendor-run data is weaker still. A win-loss vendor, User Intuition, reports that quarter-end discounts predict higher churn, but its page names no sample or method for most of its figures, so this article does not repeat them.

Test It on Your Closed Deals in Two Hours

1. Export every closed-won and closed-lost opportunity from the last four quarters. Fields: amount at first quote, final amount, segment, owner, close date.
2. Compute discount depth for each win as one minus final over first quote. Bucket it: none, under 10, 10 to 20, over 20.
3. Compare win rate across buckets inside one segment at a time, because large deals discount more and a blended view hides that.
4. Add renewal outcome for the won deals, if your CRM links them.
5. Set each bucket's observed lift against the break-even table above.

One caution on step three. Reps tend to discount the deals they already expect to win and the ones they expect to lose, for opposite reasons, so a raw comparison can flatter or punish discounting without proving anything. Compare within the same stage and the same deal size band, and treat a gap smaller than your quarter-to-quarter swing as noise. A result that survives that filter is worth acting on; the break-even lift in the Winning by Design example is your yardstick.

If deeper buckets show no lift beyond the break-even line, your own data has answered the question for you.

Stop Approving Discounts by Percentage

Most approval policies work as a ladder: the manager signs to ten, the VP to twenty. That structure asks how much, never what comes back, and it teaches reps that the ladder is the negotiation. The better rule is that no concession is approved without a written trade, whatever its size.

The trade list is short: a longer term, a smaller first scope with a priced expansion, upfront payment, a named reference, a signed date. The negotiation prep in trading concessions rather than price lays out how to prepare these in advance, so the AE is not inventing them live.

There is a second reason to be strict. If the deal is stalling because the buyer is afraid of choosing wrongly, price does not touch the fear. The JOLT authors, in a 2022 interview, put deals lost to no decision at anywhere between 40 and 60% of all deals, drawn from about 2.5 million recorded conversations. A cheaper offer to a frozen buyer is still a frozen deal. Our piece on why buyers freeze covers what moves them.

When would this be wrong? In a commodity market where price is the only criterion and cost to serve is near zero. In a clearance of end-of-life product. And when a competitor has openly reset the market price. In those cases a discount is just the price, and the break-even table still tells you how deep you can go.

The Line for Your Next Pipeline Review

A discount is paid for by volume nobody has proved, so charge for it in something the buyer can give. Do not invent a deadline to force the issue, as high-pressure tactics tend to backfire. Quarter-end timing has its own pattern, covered in year-end deal closing.

FAQs about sales discounting

Does discounting raise win rate?

Not by enough, in the model Winning by Design published. It is a scenario analysis, so check your own closed deals before you build policy on it.

How many more deals does a 20% discount need?

One quarter more, holding everything else equal. Win rate has to move from 20% to 25% just to keep revenue flat, according to the paper.

When is a discount reasonable?

When it buys something measurable: a multi-year term, an agreed reference, a bigger commitment or upfront cash. Write down what you received.

What can I offer in place of a lower price?

Offer a smaller start with a priced path to expand, added services, a longer term or a faster signature date. Each one gives the buyer a win and costs you less than margin.