Car Wash Sales Forecast Template

Once the assumptions are set, review the Monthly Revenue Forecast sheet to check whether the projections look realistic. Compare the revenue per bay figure against industry benchmarks — a single express tunnel typically generates $600,000–$1.2M+ annually at healthy volumes. If you have multiple bays or a full-service tunnel, adjust the daily volume and ticket inputs to reflect each revenue center. The Membership Model sheet lets you stress-test churn: try moving churn from 5% to 8% and watch what happens to annual recurring revenue — the difference often runs into five figures.

Membership revenue has changed the economics of the car wash industry significantly. A well-run unlimited membership program can generate 40–60% of a site's total revenue with near-zero marginal cost per wash once members are enrolled. But the forecast math only works if you're honest about churn. Industry-average monthly churn for car wash memberships runs 6–10%, which means you're replacing 72–120% of your member base over a year. A forecast that assumes 2% churn will dramatically overestimate recurring revenue — and most acquisition spend decisions get made off that number.