Tanzhang Market Stall Surplus Calculator

Free, no-signup Chinese/English browser calculator for makers selling at markets. Estimate one event’s operating surplus from net receipts, sold-product costs, losses and entered expenses. CNY only. Missing costs mean this is not full net profit or cash received. No payments, tax, FX or dedicated export. A separate optional CNY19.90 Chinese workbook is linked on the site; buying it is not needed to use the free calculator. Suggested category: Calculators & Converters or Productivity & Business. Standard free editorial review only; no paid placement or backlink commitment.