Burn Rate & Runway

Burn rate is the rate at which your e-commerce business spends cash relative to revenue over a given period, and runway is how many months your current cash balance will last at that rate. MerchantFlow calculates both metrics automatically, giving you critical visibility into your financial health and helping you plan for sustainable growth.

What Is Burn Rate?

Burn rate measures your net cash flow on a monthly basis:

Monthly Burn Rate = Total Monthly Expenses - Total Monthly Revenue

• Positive burn rate: Your business is spending more than it earns (cash is decreasing)
• Negative burn rate: Your business is earning more than it spends (cash is accumulating)

Example:

• Monthly Revenue: $80,000
• Monthly Expenses: $95,000
• Burn Rate: $15,000/month (spending $15,000 more than earning)

What Is Runway?

Runway is how many months your business can continue operating at the current burn rate before running out of cash:

Runway = Cash Balance / Monthly Burn Rate

Example:

• Cash Balance: $120,000
• Monthly Burn Rate: $15,000
• Runway: 8 months

This means at your current spending rate, you have approximately 8 months before your cash runs out.

How to Access Burn Rate Data

Navigate to Dashboard > P&L to view burn rate and runway metrics in the financial summary section.

Metrics displayed:

• Current monthly burn rate
• Trend direction (increasing or decreasing burn)
• Estimated runway in months
• Historical burn rate chart

How MerchantFlow Calculates Burn Rate

MerchantFlow uses your synced and entered data to calculate burn rate:

1. Revenue - pulled from synced order data (Shopify or WooCommerce)
2. COGS - from your configured product costs
3. Ad Spend - synced from connected ad platforms (Google, Meta, TikTok, Snapchat)
4. Expenses - from your entered business expenses (OPEX and CAPEX)
5. Other Costs - payment fees, shipping, fulfillment, and other tracked costs

All inputs are combined to determine your net monthly cash flow and burn rate.

Healthy Burn Rate Targets

Established Businesses

• Target: Negative burn (accumulating cash)
• Indicator: Revenue consistently exceeds all expenses
• Action: Reinvest surplus into growth

Growth-Stage Businesses

• Target: Controlled positive burn with 12+ months runway
• Indicator: Intentionally spending more than earning to invest in growth
• Action: Monitor runway closely and plan fundraising well before cash runs low

Early-Stage / Startups

• Target: High burn acceptable if tied to intentional growth investment
• Indicator: Rapid spending on customer acquisition and infrastructure
• Action: Maintain at least 6 months runway and have a clear path to reducing burn

How to Reduce Burn Rate

Increase Revenue

• Raise prices on high-demand products
• Launch new marketing campaigns with proven ROAS
• Improve conversion rate on your store
• Expand to new sales channels

Reduce Expenses

• Audit and cut unnecessary software subscriptions
• Renegotiate supplier contracts
• Optimize ad spend by pausing low-ROAS campaigns
• Reduce fulfillment costs through better logistics

Optimize Cash Flow Timing

• Negotiate better payment terms with suppliers
• Offer incentives for faster customer payment
• Reduce inventory holding costs

Best Practices for Burn Rate Management

1. Record Bank Balance Regularly

For accurate runway calculations, update your bank balance at least weekly at Dashboard > P&L > Bank Balance. More frequent updates produce more accurate runway estimates.

2. Review Burn Rate Monthly

Check your burn rate trend every month. A steadily increasing burn rate without corresponding revenue growth is a warning sign.

3. Plan Ahead

Do not wait until runway drops below 3 months to take action. Start planning expense reductions or fundraising when runway falls below 6 months.

4. Separate Growth Spend from Operational Spend

Understand what portion of your burn is growth investment (ad spend, new hires) versus operational costs. Growth spend can be reduced quickly if needed; operational costs are stickier.

5. Use the AI Assistant

MerchantFlow's AI assistant recognizes burn rate as a metric. Ask questions like:

• "What is my current burn rate?"
• "How many months of runway do I have?"
• "How has my burn rate changed over the last 6 months?"

Troubleshooting Burn Rate Issues

Burn rate seems inaccurate

Possible causes:

• Missing expense entries
• Ad spend not syncing from connected platforms
• COGS not configured for products
• Bank balance not updated recently

Solutions:

1. Review your expenses at Dashboard > Expenses
2. Verify ad platform connections at Settings > Integrations
3. Ensure COGS coverage is adequate (COGS Guide)
4. Update your bank balance

Runway shows as infinite

Cause: Your burn rate is negative (you are accumulating cash, not spending it).

This is a good sign. It means your revenue exceeds your expenses. The runway metric is most relevant when burn rate is positive.

Runway seems too short

Possible causes:

• One-time large expense inflating monthly burn
• Seasonal dip in revenue
• Recent increase in ad spend

Solutions:

1. Check if a one-time expense is skewing the calculation
2. Review the burn rate trend chart for context
3. Compare against previous months to identify anomalies

Frequently Asked Questions

What is a good burn rate for an e-commerce business?

For established e-commerce businesses, the target is a negative burn rate (accumulating cash). For growth-stage businesses, a controlled positive burn with 12+ months of runway is considered healthy.

How is burn rate different from expenses?

Expenses are your total costs. Burn rate is the net difference between expenses and revenue. A business with $100,000 in expenses and $120,000 in revenue has a negative burn rate (accumulating $20,000/month), despite high expenses.

Does MerchantFlow forecast future burn rate?

Yes. MerchantFlow uses burn rate data for cash flow forecasting, including short-term forecasts (1-3 months), trend-based forecasts, and scenario planning.

How often should I update my bank balance for accurate runway?

Weekly updates are recommended. The more frequently you update, the more accurate your runway calculation becomes. Navigate to Dashboard > P&L > Bank Balance to add your current balance.

Related Topics

• P&L Overview - Complete profit tracking
• Bank Balance - Cash position tracking
• Ad Spend Tracking - Advertising cost tracking
• Profit Margins - Margin analysis
• Expense Tracking - Business expense management
• Orders - Revenue and order tracking

Last updated: March 14, 2026