Contribution margin first
Calculate client revenue minus payment fees, variable vendor usage, per-client add-ons and directly attributable support. Then allocate shared platform cost across the active client base.Fixed cost gets better with scale—until support grows
A fixed platform fee becomes smaller per client as the client count rises. But support, onboarding and account management often rise with volume, so software scale does not automatically mean operating leverage.Scenario analysis
Model low, typical and high usage. Then model client counts below your target. If the business only works at 100 clients but you have 8, your pricing may be too aggressive for the current stage.Use margin to design the offer
If one feature destroys margin, make it a paid add-on, cap included usage or move it into a higher tier. Unit economics should shape packaging before launch.Separate gross margin from founder labor
Early reseller businesses often look profitable because the founder's time is treated as free. Track onboarding hours, support time and account customization even if no salary is being paid yet. Those hours show what the business will cost once someone else must perform the work.
Use contribution margin to identify the clients and features that create the most operational drag. If a certain niche requires constant custom integrations, or a certain add-on creates heavy support, that insight can guide packaging. Margin analysis is not only accounting; it is product design.