Runway defines the time horizon, typically in months, before a business exhausts all available liquid capital based on its current rate of cash consumption.
CORPORATE WISDOM · STARTUP AND GROWTH
Runway
In One SentenceThe estimated period for which a business can continue operating with its available cash.
Runway (Months) = Total Available Cash Balance ÷ Monthly Net Burn Rate
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PRACTICAL FRAMEWORK
Executive Perspectives & Ground Reality
How many months your business can survive before running completely out of money, assuming revenue and expenses continue at their current levels.
An aircraft speeding down an airstrip needing to gain flight velocity (profitability or new financing) before reaching the end of the paved runway.
Liquid cash in bank: ₹1.2 crore. Average net burn: ₹10 lakh per month. Runway = ₹1.2 crore ÷ ₹10 lakh = 12 months. If collections slip by ₹2 lakh/month, runway shrinks to 10 months immediately.
Runway is rarely smooth. Receivables delays, unexpected employee exits with gratuity/severance payouts, and vendor price increases routinely erode apparent runway faster than linear models predict.
Fundraising takes 6 to 9 months. If runway falls below 9 months, management must actively initiate fundraising, negotiate debt lines, or execute contingency cost cuts.
What Runway Is Not
Runway and Permanent Security
Having twelve months of runway provides time to execute, but without reaching sustainable unit economics it simply postpones an inevitable restructuring.
Runway and Guaranteed External Funding
A long cash runway does not ensure that external investors will fund the next round if key performance milestones are missed.
Runway and Cost Cutting Alone
Slashing expenditures extends runway mathematically, but gutting core sales or engineering capabilities can permanently cripple revenue generation.
Runway and Static Bank Balance
Projected runway can contract abruptly if customer collection cycles lengthen or unexpected supplier payments drain reserves.
Questions Business Leaders Ask About Runway
What is considered a healthy runway buffer?
Institutional companies aim for 12 to 18 months of verified runway to maintain strategic leverage and operational stability.
When should emergency cash conservation start?
When runway approaches 6 months without term sheets or signed contracts in place.
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