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Model your burn rate, revenue growth and expense growth month by month. See exactly how many months of runway you have and when to start your next raise.
All amounts monthly unless stated. Results update live.
Gross burn is your total monthly operating spend. Net burn is what actually leaves the bank after revenue: expenses minus collections. Runway is how many months of net burn your current cash covers. This calculator compounds your revenue and expense growth month by month instead of dividing cash by a static burn figure, which is how most founders get surprised.
In the 2026 funding market, investors are scrutinising burn multiples and default-alive status before term sheets. A startup that can show a credible path to breakeven inside its current cash position negotiates from strength.
| Stage | Healthy runway | When to raise |
|---|---|---|
| Pre-seed / Seed | 15 to 18 months post-raise | At 9 months left |
| Series A | 18 to 24 months post-raise | At 9 to 12 months left |
| Growth | 24 months plus | At 12 months left |
There is no universal number; what matters is burn relative to growth. A common 2026 heuristic is a burn multiple under 2, meaning you burn less than 2 rupees for every 1 rupee of net new ARR. Early-stage teams in India often target monthly net burn below 5 to 8 percent of cash reserves.
Keep at least 12 months at all times and start raising when you hit 9 to 12 months left. Indian rounds in 2026 routinely take 3 to 6 months from first pitch to money in bank, plus FEMA and ROC timelines if foreign investors participate.
A startup is default alive if, on current growth and expense trends, it reaches profitability before cash runs out. This calculator flags you default alive when projected revenue overtakes expenses within your cash horizon.
Cash burn should include everything that leaves the bank: salaries, rent, tools, GST and TDS payments, PF and ESI. Non-cash ESOP expense does not reduce runway but investors will still ask about it in diligence.
BSA runs fundraise-readiness reviews: cap table, founder agreements, ROC and FEMA hygiene, so diligence never stalls your round.
