Discounting feels like a small concession. Ten percent off to close a deal, a bit of flexibility to keep a customer. It's the most commonly granted concession in commercial negotiation.

The arithmetic is considerably more punishing than it feels, and most organisations don't calculate it.

The break-even volume

Here's the calculation everyone should be able to do and almost nobody can.

Suppose you sell something for 100 with a gross margin of 40 percent. Your contribution per unit is 40.

Now discount by 10 percent. You sell at 90. Costs haven't changed, so contribution is 30.

To generate the same total contribution, you need to sell 33 percent more units. A ten percent discount requires a third more volume just to stand still.

At a 30 percent margin, the same ten percent discount requires a 50 percent volume increase. At 20 percent margin, it requires doubling volume.

The lower your margin, the more devastating discounting becomes, which is exactly the opposite of how it's usually treated — low-margin businesses discount most readily because prices feel tight.

Why it feels smaller than it is

The psychological error is comparing the discount to the price rather than to the margin.

Ten percent off a price sounds like a small adjustment. The same amount is a quarter of the contribution in the example above. The salesperson is thinking about the first framing and the business experiences the second.

This is compounded by how sales incentives are usually structured. Commission on revenue makes a discounted deal only slightly worse for the salesperson while being dramatically worse for the business. Commission on margin aligns the two and is much less common.

The compounding effects

Beyond the immediate arithmetic, discounting creates several downstream problems.

It resets expectations. A customer who received a discount expects one next time. The discount isn't a one-off concession; it's a permanent price change communicated as a favour.

It spreads. Buyers talk, particularly in concentrated markets. A discount granted to one account becomes the reference price for others.

It signals. A price that moves under pressure tells the buyer the original price was inflated. That damages credibility on every subsequent negotiation.

It attracts the wrong customers. Price-motivated buyers have lower loyalty, higher service demands relative to value, and churn more readily. Discounting selects for exactly the customers you'd least want.

What to give instead

The useful reframe: when a buyer pushes on price, they're usually pushing on value or on budget. Both have responses other than reducing the number.

Reduce scope. If the price is too high, offer less for less. This preserves the price-to-value relationship and frequently reveals that the buyer wanted the full scope after all.

Change terms. Longer commitment for a better rate. Payment in advance. A larger initial volume. Each of these gives you something in exchange, which is what a negotiation is supposed to be.

Add value rather than subtracting price. Additional support, training, an extra feature. This costs you less than the equivalent discount if the marginal cost of the addition is low, and it doesn't reset the price.

Time-bound and conditional. If you must discount, attach it to something — a launch period, a volume commitment, a case study — so it's explicable and not simply a lower price.

The one thing to never do

Discount without asking for anything in return.

A concession given freely teaches the buyer that pushing works and that the next push will also work. A concession traded for something establishes that you negotiate rather than yield.

The simplest version: "I can do that if you can commit to a two-year term." Whether or not they accept, you've established the principle.

Structural fixes

For organisations where discounting has become endemic, a few interventions work.

Approval thresholds. Discounts above a level require sign-off. Friction reduces frequency, and the conversation with an approver frequently reveals that the discount wasn't necessary.

Measure it. Report realised price against list price by salesperson, by segment, by period. Simply making discount levels visible tends to reduce them.

Commission on margin. Aligns the incentive. Resisted by sales teams for obvious reasons and it's the single most effective change available.

Train on the arithmetic. Most salespeople have never seen the break-even volume calculation. Showing it once changes how people think about a ten percent concession, permanently.

That last one is nearly free and it's the one I'd start with. It's remarkable how much behaviour changes when people understand that the small concession they're offering is a third of the profit.

The end-of-quarter pattern

One organisational habit worth naming because it is so widespread: discounting clusters heavily at the end of reporting periods, as sales teams close deals to hit targets.

Buyers learn this. Procurement functions in larger organisations know precisely when a supplier's quarter ends and time their negotiations accordingly. What was intended as an internal management mechanism has become a published discount schedule.

Fixing it is difficult because the underlying incentive is quarterly. Some businesses have moved to rolling targets, some to margin-based commission, some simply to holding firm at quarter end and accepting slower closes.

All of those cost something. Continuing as is costs more, and it is worth calculating how much before deciding the current arrangement is acceptable.