Runway Calculator
Growth extends it, if the growth holds.
Runway
over 10 years
break-even in month 4
Growth adds runway by shrinking the gap each month, reaching break-even in month 4. That only holds if the growth rate holds — planning on a rate you have not sustained is how runway calculations mislead.
How the Runway Calculator works
Growth adds runway by shrinking the monthly gap, and that only holds if the growth rate holds. Planning on a rate you have not sustained is precisely how runway calculations mislead the people making them.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
How is runway calculated?
Cash divided by net monthly burn. With growth, it has to be modelled month by month because both revenue and costs move.
How much runway should I keep?
Enough to reach the next milestone plus a margin for it taking longer. Twelve to eighteen months is the common target for a business raising capital; a bootstrapped business usually wants at least six.
Should I model growth in runway?
Model both — flat and growing. The flat case is the floor and the growing case is the plan, and knowing the gap between them is the point of the exercise.
What if break-even is never reached?
Then costs have to change or growth has to accelerate. A model showing no break-even at any horizon is telling you something the spreadsheet cannot fix.