Loading
A structured way to estimate what one commercial unit (a sale, customer, subscription, product, service, order or project) actually contributes, including break-even, acquisition payback and lifetime economics.
The result panel shows contribution per unit and contribution margin, the break-even threshold, and, where the inputs support them, CAC payback and a basic lifetime-value range. Sensitivity indicators highlight which assumptions move the result most, and the panel flags missing data and potentially misleading assumptions rather than hiding them. Every figure is labelled with the assumptions behind it, and results update dynamically as inputs change.
Guided input sections explain each field and let unknown values be marked explicitly as assumptions, so the calculation never presents a guess as a fact. Standard contribution, break-even, payback and lifetime-value arithmetic then runs over your inputs, with sensitivity indicators showing which assumptions carry the result. Outputs are estimates built on self-reported figures and simplified models, useful for direction and comparison, not a substitute for management accounting.
Results are rule-based guidance generated from self-reported answers. They are directional, not accounting, legal or other professional advice, and a professional review working from evidence may reach different conclusions.
The calculator runs inside Web Lifter Studio and each calculation saves to your private workspace as a named scenario linked to your business profile, along with its assumptions, calculation date and caveats. Scenarios can be duplicated, compared across units and revisited as figures change.
Each calculation is saved as a named scenario, so the calculator becomes more useful over time: duplicate a scenario to test a price change, compare contribution across products or customer segments, and revisit assumptions as real figures replace estimates. Studio keeps the assumption labels and caveats with each scenario, so a result from three months ago still shows exactly what it was built on.
When the result points at a constraint that needs professional depth, these engagements pick it up.
Registration is free, no card required, and your results save to your workspace so the working stays in one place.