Runway calculator
How long does the money actually last?
Most runway numbers are a bank balance divided by last month's burn. That counts money you already owe, and money you have invoiced but not collected.
Your numbers
What is actually there, across all accounts.
GST, TDS, PF, deferred salaries, anything already committed. This sits in the balance looking like runway.
Money that actually lands, not revenue invoiced.
Everything leaving: salaries, rent, vendors, tooling.
Leave at zero if collections are flat. Compounds month on month.
Runway
4 months
Cash runs out around Jan 2027, on these assumptions.
Below six months, cash timing and the cost base usually matter more than anything you do on growth.
- Usable cash
- ₹22,00,000
- Net monthly movement
- -₹6,00,000
- Held back for dues
- ₹3,00,000
A straight-line estimate from what you entered. It assumes costs hold steady and nothing one-off lands. Nothing you type is sent anywhere or stored.
Reading the answer
The number matters less than what it leaves you free to do.
Above 18 months
You choose when to raise, and a bad quarter is survivable rather than decisive.
9 to 12 months
The window where fundraising preparation usually needs to begin, because raising takes longer than planned.
Under 6 months
Cash timing and cost structure matter more than growth. Options narrow quickly at this level.
Common questions
About this calculation.
Because runway is a cash question. Revenue is recognised when it is earned, and cash arrives when someone actually pays. A business with strong invoiced revenue and slow collections can run out of money while its accounts look healthy, which is one of the commonest ways founders overstate how long they have.
GST, TDS, provident fund and deferred salaries sit in the bank balance looking like runway right up until the day they leave. Dividing the full balance by monthly burn counts that money twice. Holding it back gives you the figure you can actually spend.
The common guidance is to start fundraising at around nine to twelve months of runway, because raising in India frequently takes longer than founders plan for and negotiating from a short runway weakens your position. What matters more than the number is whether you would still have choices if the next quarter went badly.
It is a straight-line estimate and should be treated as one. It assumes costs hold steady, nothing one-off lands, and collections behave as you described. Real runway moves with the timing of receivables and lumpy payments, which is exactly the work a proper cash forecast does.
If the number surprised you
The questions founders ask next, answered in full.
All insights →If the number surprised you
A figure on its own does not tell you much. The useful next step is working out what is driving it, and whether it is the cash timing or the cost base that needs attention.
Talk through what this means →