Cash Runway Calculator
Estimate how many months of cash a business has left at its current burn rate for 2026. Net burn is monthly operating expenses minus monthly recurring revenue — the cash a business loses each month once revenue is factored in. Enter current cash on hand, monthly recurring revenue and operating expenses, expected monthly growth rates, and any one-time cash inflows or outflows, and the calculator projects the monthly cash balance forward, estimates the runway in months and an approximate cash-out date, and compares a Base, Conservative and Growth scenario side by side.
Estimate only for the 2026 tax year. Not tax, accounting or financial advice. Talk to RN Canada about your situation.
How it works
The calculator starts from current cash plus one-time inflows minus one-time outflows, then projects revenue and operating expenses forward month by month at the entered growth rates, tracking the running cash balance until it is exhausted or the projection reaches its cap. The Conservative and Growth scenarios apply lower and higher growth multipliers to the same starting figures to show a range of outcomes.
What the result includes
Results show the gross and net monthly burn, the estimated runway in months, an approximate cash-out date, a month-by-month cash projection table, and Base, Conservative and Growth scenario comparisons — or a cash-flow-positive result instead of a runway when revenue already covers expenses.
Assumptions
Assumes revenue and expenses grow at a constant compounding monthly rate rather than in irregular steps, that one-time inflows and outflows occur immediately rather than being spread over time, and that the entered figures reasonably represent ongoing operations. Financing events such as new debt or equity raises are not modelled unless entered as a one-time inflow.
Frequently asked questions
Cash runway is how many months a business can keep operating before it runs out of cash at its current burn rate, calculated as current cash divided by net monthly burn, adjusted here for expected revenue and expense growth over time.
Gross burn is total monthly operating expenses. Net burn subtracts monthly recurring revenue from that figure, showing the actual monthly cash outflow after revenue is factored in. A business can have high gross burn but low net burn if revenue is strong.
It means monthly recurring revenue already covers or exceeds monthly operating expenses, so net burn is zero or negative. In that case there is no runway to exhaust at the current run rate, so the calculator reports a cash-flow-positive status instead of an infinite or misleading number.
The Conservative scenario slows expected revenue growth and speeds up expected expense growth relative to the Base case, shortening the runway; the Growth scenario does the opposite, extending it. Comparing all three gives a realistic range instead of a single point estimate.
Not directly. A planned investment or loan can be entered as a one-time cash inflow to see its effect on the runway, but the calculator does not model financing terms, dilution or repayment.
Last reviewed: 2026-08-19. Sources: Canada Revenue Agency — Keeping records for your business