Price Change Calculator
A higher contribution per sale can still produce less total contribution. Compare the complete scenario before changing your price.
1. Enter comparable scenarios
Use one currency and one period throughout. Volume means completed sales or paying members in that period.
2. Compare contribution
Contribution = price − variable cost. Total contribution = volume × contribution per unit. This is before fixed costs, taxes and financing; it is not net profit.
Your scenario comparison
Save up to eight scenarios. They remain only in this open page; the tool does not estimate demand. Changing the current offer clears saved comparisons.
| Price | Unit cost | Assumed volume | Total contribution | Volume needed |
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Two pages. Fillable worksheet and a completed teaching example. Free to download; no email required.
Turn the threshold into an experiment
Fix the offer, customer segment and observation period. Estimate whether demand will stay above the calculated volume; then compare actual purchases, renewals, refunds and service costs. A threshold is a question to investigate, not evidence that buyers will accept the new price.
When the comparison needs more work
The preservation threshold is shown only when current and proposed unit contribution are both positive and current volume is above zero. Non-positive contributions are still displayed honestly, but do not support the usual “customers you can afford to lose” interpretation. A required volume above the current one means additional sales are needed. Prices and unit costs can have two decimal places; volumes are whole units.
Underlying contribution/break-even definitions: U.S. Small Business Administration. Our threshold preserves current contribution; it is not the fixed-cost break-even point. All preset numbers are fictional.