Calculate your business runway.
Estimate how many months your available cash can support your business based on monthly revenue and operating expenses. Measure your burn rate and understand how much time you have to reach sustainable profitability.
Business data
Business Runway Analysis
Enter your available cash, monthly revenue and monthly expenses to evaluate your financial runway.
Your runway depends on real profitability.
MarginLab helps Shopify merchants monitor product margins, costs and profit leaks so revenue growth improves cash flow instead of increasing financial pressure.
How to use this Business Runway Calculator
Enter your available cash, monthly revenue and monthly operating expenses. The calculator instantly determines your monthly burn rate, estimates how many months your business can continue operating and evaluates whether your current cash flow position is financially sustainable.
Add the total cash currently available to support business operations, including accessible bank balances and unrestricted cash reserves.
Enter your average monthly revenue and recurring operating expenses, including payroll, rent, software, advertising, fulfillment and other business costs.
Analyze your estimated runway, monthly burn rate, cash flow position and financial risk to understand how much time you have to improve profitability.
Business Runway formula explained
Business runway measures how long a company can continue operating before available cash is exhausted. It is a critical financial metric for startups, ecommerce businesses and growing companies because it shows how much time remains to improve profitability, reduce expenses or secure additional funding before cash reserves run out.
Business Runway formula
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Monthly Burn Rate
The result estimates the number of months your business can continue operating if the current monthly cash burn remains unchanged.
Monthly Burn Rate formula
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Monthly Revenue
Burn rate represents the amount of cash your business loses each month. If revenue exceeds expenses, your business has positive cash flow and no longer consumes cash reserves.
Example calculation
What is a good business runway?
The ideal business runway depends on your growth stage, profitability and access to financing. In general, businesses with longer cash runways have greater flexibility to improve operations, withstand market fluctuations and invest in sustainable growth without immediate financial pressure.
Critical
Less than three months of runway leaves very little time to reduce expenses or improve profitability before cash reserves are exhausted.
High Risk
A runway between three and six months requires careful cash management and immediate action to improve operating performance.
Healthy
Six to twelve months of runway generally provides enough time to optimize margins, reduce burn rate and strengthen financial stability.
Excellent
More than twelve months of runway gives your business greater financial flexibility to invest in growth while maintaining a comfortable cash buffer.
- Business runway should always be evaluated together with monthly burn rate and cash flow.
- Reducing operating expenses can often extend runway faster than increasing revenue.
- Improving gross margins and profitability naturally reduces cash burn and strengthens financial stability.
- MarginLab helps Shopify merchants identify profit leaks, improve margins and generate healthier cash flow to extend business runway.
Common Business Runway mistakes
Business runway is a critical financial metric, but it is often calculated using incomplete or unrealistic assumptions. These mistakes can create a false sense of security, hide cash flow pressure and delay important decisions needed to protect the business.
Using an incomplete cash balance
Businesses sometimes include restricted funds, unavailable credit or money reserved for taxes and supplier payments. Runway should be based only on cash that can genuinely support ongoing operations.
Underestimating monthly expenses
Ignoring irregular costs, annual subscriptions, tax payments, refunds, inventory purchases or seasonal increases can make the calculated runway appear much longer than it really is.
Assuming revenue will remain stable
Revenue can fluctuate due to seasonality, advertising performance, customer demand and competition. A reliable runway estimate should consider conservative revenue assumptions rather than best-case forecasts.
Calculating runway only once
Business runway changes whenever cash, revenue or expenses change. Reviewing it regularly helps identify increasing burn rate and financial pressure before available cash reaches a critical level.
Why Business Runway matters
Business runway shows how long your company can continue operating before available cash is exhausted. Even businesses with growing revenue can face financial pressure when expenses remain higher than income. Monitoring runway helps you understand how much time you have to improve profitability, reduce burn rate and make better financial decisions before cash reserves become critical.
Common business runway challenges
- Monthly expenses remain higher than recurring revenue.
- Cash reserves decline faster than expected.
- Inventory, payroll and advertising costs increase during growth.
- Seasonal revenue fluctuations create temporary cash flow pressure.
- Businesses focus on revenue without measuring real profitability.
How MarginLab helps
MarginLab helps Shopify merchants understand the profitability behind their revenue. It connects product costs, margins, discounts, refunds and operating performance to reveal where profit is being lost and which products or decisions are placing pressure on cash flow.
Use this calculator to estimate how long your available cash can support current operations. Use MarginLab to monitor margins, uncover profit leaks and improve the profitability needed to reduce burn rate and strengthen your financial position.
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Calculate real Shopify profit after product costs, discounts, refunds, shipping and other operating expenses.Frequently asked questions
These are some of the most common questions about business runway, burn rate, cash flow and long-term financial sustainability.
What is business runway?
Business runway is the amount of time a company can continue operating before its available cash is exhausted. It is typically expressed in months and is calculated using available cash and the current monthly burn rate.
How do you calculate business runway?
Business runway is calculated by dividing available cash by the monthly burn rate. For example, if a business has $120,000 in cash and loses $10,000 per month, its runway is approximately 12 months.
What is a good business runway?
Most businesses aim to maintain at least six to twelve months of runway. Companies with more than twelve months generally have greater financial flexibility, while less than three months often requires immediate action.
What is monthly burn rate?
Monthly burn rate is the amount of cash a business loses each month when operating expenses exceed revenue. Lowering burn rate or increasing profitability automatically extends business runway.
Why is business runway important?
Business runway helps owners understand how much time they have to improve profitability, reduce costs or secure additional funding before cash reserves are depleted. It is one of the most important indicators of financial stability.
How does MarginLab help improve business runway?
MarginLab helps Shopify merchants identify profit leaks, improve product margins, reduce unnecessary costs and increase real profitability. Stronger margins and healthier cash flow reduce burn rate naturally, extending business runway without relying solely on additional funding.
Revenue growth is not enough.
Your business needs sustainable runway.
This calculator helps you estimate business runway, monthly burn rate and cash flow position. MarginLab goes further by connecting revenue with product costs, discounts, refunds and real margins, helping Shopify merchants understand which profit leaks are reducing cash flow and putting unnecessary pressure on financial stability.
Profitability Visibility
Understand how product margins, operating costs and revenue quality affect the cash available to support your business.
Cash Flow Risk Detection
Identify weak margins, rising costs and profit leaks that can increase burn rate and shorten your business runway.
Profit Intelligence
Receive clear insights that connect Shopify performance with real profitability and highlight practical opportunities to strengthen cash flow.
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