Business · 2 min
Every price rise is a bet that the clients who leave cost less than the increase earns. The bet has a printed break-even: at a given gross margin, a given rise can afford a precise percentage of walkouts before it loses money. This instrument prints that number and reads your expected churn against it — which is the entire decision.
The clients this price rise touches.
Revenue minus the direct cost of serving it. Low-margin books can afford almost no churn; high-margin books can afford a surprising amount.
Your honest read, not your hope. Well-communicated B2B rises commonly lose 3–10%.
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Raise.
14.3%
the churn this rise can afford — you expect 8%
| Gross profit today | — |
| Break-even churn — the walkouts this rise can afford | — |
| Gross profit after, at your expected churn | — |
| The rise's profit effect, per year | — |
| Revenue effect, for the vanity dashboard | — |
| If churn lands at | Gross profit after | vs today |
|---|---|---|
| — | — | — |
| — | — | — |
| — | — | — |
Churn is not random: the clients who leave over price are disproportionately the discounted, demanding, low-margin ones. Losing them often improves the book beyond what this arithmetic shows.
The model assumes the survivors stay whole. If the rise triggers negotiation rather than departure, the effective rise is smaller than the announced one — price the concession round too.
Grandfathering, tiering and 90-day notice all trade some of the gain for lower churn. The break-even number tells you how much insurance you can afford to buy.
Everything below is calculated from your inputs. Expected churn is an assumption you control; the break-even is not.
profit_after = revenue × (1 − churn) × (margin + rise)
break_even = rise / (margin + rise)
gauge = expected_churn / break_even
Variable costs scale with the clients who remain, so a departed client takes revenue and its serving cost with it. The gauge reads your expected churn against the break-even, the line at 100%: under it the rise pays, over it the rise costs. The formula's shape is the useful lesson — the higher your margin, the more churn a rise survives.
Limitations. Fixed costs, cross-sell effects, referral networks and the strategic value of specific logos are outside. A single churn number stands in for a distribution; run the scenario row before deciding.