How do I calculate break-even including platform fees?
Treat platform fees as variable costs. If Stripe takes 2.9% + $0.30 and Amazon takes 15%, add those to your per-unit variable cost before dividing fixed costs.
Calculate how many units you need to sell to cover all costs. Enter fixed costs, variable costs, and price to find your break-even point.
Break-even Units = Fixed Costs / (Price − Variable Cost). Break-even Revenue = Break-even Units × Price.
$10,000 fixed costs, $50 price, $30 variable cost → 500 units to break even ($25,000 revenue).
Treat platform fees as variable costs. If Stripe takes 2.9% + $0.30 and Amazon takes 15%, add those to your per-unit variable cost before dividing fixed costs.
Ready-mix truck ≈ $130–$180 per cubic yard delivered; bagged 80-lb concrete ≈ $6/bag and needs ~40 bags per cubic yard (~$240). Ready-mix wins above ~1 cubic yard; bags win for small patch jobs.
Recompute break-even in tiers — one for each pricing tier from the supplier. The true break-even sits inside whichever tier your projected volume lands in.