Investment · Cash flow
Time the return.
See the payback.
Turn a startup investment and monthly contribution into net return, simple ROI, payback timing, and revenue scenarios.
Initial investment→Monthly contribution→Net return
Net return
$7,000.00Monthly contribution$1,500.00
Payback8.0 months
ROI58.3%
Downside net return$-2,000.00
Upside net return$16,000.00
Active period12 months
Planning estimate only. Verify actual prices, cash-flow timing, financing, taxes, and accounting treatment for your business.Calculation method
Contribution accumulates after the entered revenue delay.
Net return equals active-month contribution plus salvage value minus the initial investment. ROI divides that net return by investment; simple payback adds the revenue delay to investment divided by positive monthly contribution. Downside and upside cases change revenue only, keeping costs visible and constant. This undiscounted model excludes financing, taxes, uneven intra-month cash-flow dates, and risk-adjusted discounting.