How the calculation works
Monthly revenue = jobs or stops × average price. Monthly cash costs = volume × (supplies + travel + equipment reserve) + paid labor + overhead.
Owner earnings = revenue − cash costs and equipment reserve. Owner-time allowance = owner hours × hourly value. Profit after owner time = owner earnings − that allowance.
Break-even volume = fixed monthly costs ÷ contribution per job or customer after owner time, rounded up. Startup recovery = cash startup investment ÷ monthly profit after owner time. N/A means the available contribution or profit is not positive.