Startup Burn Rate & Cash Runway Calculator 2026

About Startup Burn Rate Calculator

Burn rate is the cash a company loses each month while it spends more than it earns, and runway is how long its bank balance lasts at that pace. Together they tell a founder how much time is left to reach profit, cut costs or raise money.

This calculator takes one month's revenue and operating expenses, works out gross and net monthly burn, and divides your cash balance by the net burn to give runway in whole months, rounded down. It treats every month as the same. It does not model hiring plans, one-off payments, loans you could still draw, or money from a round or a refund that has not yet reached the bank.

How it Works

The calculator takes three inputs:

• Current Bank Cash Balance: the cash the company holds today and can spend.
• Monthly Recurring Revenue (MRR): the revenue that comes in during a typical month. It is set against expenses to give net burn.
• Monthly Operating Expenses: everything that leaves the bank in a typical month, such as salaries, cloud, rent and marketing. This figure on its own is the gross burn.

Why it helps

• Know how long you have: see the number of months the cash lasts if nothing changes.
• Price a decision in months: change expenses to see how much runway a cost cut buys, or how much a new hire uses up.
• Plan the next step early: a runway figure in months helps decide when to start raising money or trimming spend, before the choice is forced.
• Share the same numbers: the link from the share button carries your inputs, so co-founders and investors see the figures you saw.

References

• DPIIT — startup recognition
• SEBI — investor education
• Income Tax Department — official e-filing portal
• GST — official taxpayer portal