Business finance · Free calculator

Cash runway calculator.

Work out your monthly cash burn and how long your available cash can last.

Your numbers

Change an input to update your estimate. Your entries stay in this page.

Estimated cash runway
8 months
Available cash
₹12,00,000.00
Monthly net cash burn
₹1,50,000.00
Monthly cash surplus
₹0.00

At the current monthly burn, with no new financing or changes in cash flow.

Behind the result

How it works.

Net monthly burn = cash outflow − cash inflow. Runway in months = available cash ÷ positive net monthly burn.

Know the assumptions

Assumes steady monthly inflows and outflows, beginning with the available cash entered. Use cash actually available to spend, excluding restricted funds. Seasonal changes, one-off payments and new financing are excluded.

A few useful answers

Common questions.

Is revenue the same as cash inflow?

No. Use cash collected during the month, rather than unpaid invoices or booked revenue.

What if cash inflow exceeds outflow?

There is no cash depletion under those constant assumptions. The tool reports this instead of claiming an infinite guaranteed runway.

The useful next read

Cash runway and working capital: two checks for your business

Separate cash you can spend from balance-sheet liquidity, and build a cash forecast from collections and payments.

Read the guide
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