SaaS Runway Calculator

Runway is time until the cash is gone. It's computed from net burn — expenses minus revenue — which means revenue growth and cost cuts both extend it. This calculator shows months left and the implied end date.

Inputs

Cash on hand

Monthly revenue (MRR)

Monthly expenses

Results

Runway

8.0 months

Net monthly burn: $22,500
Cash-out date: —
Break-even gap / month: $22,500

Rule of thumb used by many operators: raise or reach profitability with at least 6 months of runway still remaining.

Formula

Runway = Cash ÷ (Expenses − Revenue)

FAQ

Should revenue in runway be discounted?

If revenue is lumpy or partially one-time, use a conservative recurring figure. Runway is a risk metric — optimism defeats its purpose.

Does this account for growth?

No — it assumes flat revenue and costs. For a dynamic view, project monthly with the revenue forecast calculator.