What Is Burn Rate?
Burn rate is the rate at which a company spends its cash reserves — typically measured as dollars per month. If your business spends more than it earns, you're "burning" cash. The speed of that burn determines how long you can keep operating.
The term originated in the startup world, where venture-backed companies deliberately spend more than they earn to grow fast. But burn rate is just as critical for established small businesses — especially during seasonal downturns, economic slowdowns, or growth phases where expenses front-run revenue.
Every business has a burn rate. Even profitable ones. The difference is whether you know yours, whether it's intentional, and whether it's sustainable.
The silent killer: Most businesses don't fail in one dramatic moment. They fail slowly, over months of burn rate exceeding what they can sustain. By the time the bank account looks scary, you're already 60–90 days behind on the decisions that could have saved you.
Gross Burn vs. Net Burn Rate
This distinction is fundamental. Getting it wrong leads to either false panic or false confidence:
When to use which
Gross burn tells you your cost structure. It's useful for:
- Understanding your fixed cost base
- Planning worst-case scenarios (what if revenue drops to zero?)
- Benchmarking against similar businesses
- Negotiating with investors or lenders
Net burn tells you the real drain on your cash. It's useful for:
- Calculating cash runway (always use net burn)
- Week-over-week financial health monitoring
- Making hiring and spending decisions
- Setting profitability timelines
Example: same company, very different story
Consider a marketing agency:
- Monthly expenses: $65,000 (team: $45K, office: $8K, tools: $5K, misc: $7K)
- Monthly revenue: $50,000
- Gross burn: $65,000 — sounds alarming
- Net burn: $15,000 — much more manageable
If they have $90,000 in the bank, gross burn says "1.4 months of runway" (panic mode). Net burn says "6 months of runway" (tight but workable). Using the wrong number leads to the wrong decisions.
How to Calculate Your Burn Rate
Here's the step-by-step process for getting an accurate burn rate number:
Step 1: Pick your time window
Use the last 3 months of data at minimum. One month is too noisy — you'll over-react to anomalies. Six months is ideal because it smooths out quarterly payments and seasonal variation.
Step 2: Total all cash outflows
Include everything that left your bank account:
- Payroll and contractor payments
- Rent and utilities
- Software subscriptions
- Insurance premiums
- Marketing and advertising spend
- Professional services (legal, accounting)
- Loan and debt payments
- Equipment purchases
- Travel and entertainment
Step 3: Total all cash inflows
Include everything that entered your bank account:
- Customer payments (not invoiced — actually received)
- Subscription revenue collected
- Refunds received
- Interest income
Do not count: Loans received, investment capital, or credit line draws — these are financing, not operating revenue.
Step 4: Calculate
- Gross burn = Total outflows ÷ Number of months
- Net burn = (Total outflows − Total inflows) ÷ Number of months
Watch for lumpy expenses: If your 3-month window includes a large one-time expense (equipment purchase, annual software renewal, tax payment), your average will be inflated. Note these separately and calculate a "normalized" burn rate that excludes one-time items. Track both numbers.
Burn Rate Benchmarks by Industry
Burn rate varies enormously by business type, stage, and geography. Here are rough benchmarks to help you contextualize your numbers:
| Business Type | Typical Monthly Gross Burn | Largest Cost Driver |
|---|---|---|
| Solo SaaS founder | $3K–$8K | Infrastructure + tools |
| Seed-stage startup (3–5 people) | $25K–$60K | Payroll (70–80%) |
| Series A startup (10–20 people) | $150K–$350K | Payroll + office |
| Professional services firm | $15K–$50K | People + insurance |
| E-commerce (small) | $10K–$40K | Inventory + ads |
| Restaurant / food service | $30K–$80K | Labor + food costs |
| Construction / trades | $20K–$60K | Labor + materials |
| Medical / dental practice | $40K–$120K | Staff + rent + supplies |
These are rough ranges. Your burn rate depends on your specific market, team size, growth stage, and geography. A SaaS company in San Francisco burns differently than one in Kimberly, Alabama. Use these as directional reference points, not targets.
Burn Rate vs. Runway: The Connection
Burn rate and runway are two sides of the same coin. Your burn rate determines how fast the clock is ticking; your runway is how much time is left on that clock.
This means you have two levers to extend runway:
- Increase your cash balance (raise capital, accelerate collections, sell annual plans)
- Decrease your net burn rate (cut expenses, increase revenue, or both)
For a detailed breakdown of runway calculations, benchmarks, and when to worry, see our cash runway calculator guide.
The burn rate multiplier effect
Small changes in burn rate create large changes in runway:
Proven Strategies to Reduce Burn Rate
When your burn rate needs to come down, these are the categories with the biggest impact — ordered from quickest wins to structural changes:
1. Audit your software stack (saves $500–$3,000/month)
The average SMB pays for 15–25 SaaS tools. Most are under-utilized. Run a quick audit:
- List every active subscription with cost and last login date
- Cancel anything unused in the last 30 days
- Consolidate overlapping tools (do you really need Slack AND Teams?)
- Negotiate annual pricing for tools you're keeping (typically 15–20% discount)
2. Renegotiate vendor contracts (saves $1,000–$5,000/month)
Vendors would rather give you a discount than lose you as a customer. Approach your landlord, insurance broker, and top 3 vendors:
- Ask for 10–15% reduction in exchange for a longer commitment
- Request payment term extensions (net-30 to net-60) to improve cash flow timing
- Get competitive quotes and use them as leverage
3. Convert fixed costs to variable (structural savings)
Every fixed cost that can become variable reduces your downside risk:
- Full-time employees → part-time or fractional where possible
- Owned equipment → leased equipment
- Dedicated office → co-working or hybrid
- Retainer-based services → project-based or pay-per-use
4. Optimize revenue collection (improves net burn immediately)
Faster collection doesn't reduce expenses, but it reduces net burn — which is what matters for runway:
- Invoice immediately upon delivery (not end-of-month)
- Offer 2% discounts for payment within 10 days
- Automate payment reminders at day 15, 25, and 30
- Require deposits or milestone payments for large projects
5. Reduce payroll burn (the biggest lever)
Payroll is typically 60–80% of burn for service businesses and 40–60% for product businesses. This is the most impactful — and most painful — lever:
- Freeze new hires until runway exceeds 9 months
- Offer equity or performance bonuses in lieu of salary increases
- Eliminate roles that don't directly serve customers or build product
- Use contractors for intermittent work instead of full-time hires
The compound effect: A 10% reduction across your top 5 expense categories typically yields a 20–30% improvement in net burn rate. Small cuts across multiple areas are usually better than one dramatic cut in a single area — and less disruptive to operations.
When a High Burn Rate Is Actually Fine
Not all burn is bad. Burning cash aggressively is rational when:
- You're investing in proven growth: If every $1 in marketing spend reliably generates $3 in LTV within 12 months, burning more on marketing is smart — it's not expense, it's investment.
- You have 18+ months of runway: With substantial cushion, spending to grow faster is often the right call. The risk of moving too slowly often exceeds the risk of spending too quickly.
- You're in a winner-take-most market: If your market will consolidate around 1–2 players, speed matters more than efficiency. Burn to capture market share before competitors do.
- Your unit economics are strong: If gross margins are 70%+ and churn is under 5%/month, each new customer is highly profitable over time. The burn is front-loading future profits.
The key question is: "Is this burn buying us something durable?" If the spending creates lasting assets — a bigger customer base, a better product, a stronger brand — it's investment. If it's just keeping the lights on without building value, it's a problem.
The growth trap: "We're investing in growth" is the most common rationalization for unsustainable burn. The test: if you stopped that spending tomorrow, would revenue continue at roughly current levels for 3+ months? If yes, the spending is building lasting value. If revenue would drop immediately, you're buying revenue, not building it — and that's a treadmill, not a strategy.
Stop Guessing — Track Burn Rate Automatically
Most SMB owners calculate burn rate once (maybe during a fundraise or bank meeting) and then forget about it until the next crisis. But burn rate changes constantly — every new hire, lost client, or price increase shifts the number.
CashScope tracks your burn rate automatically by connecting to QuickBooks or Xero. Every week, you get a plain-English report that includes:
- Your current gross and net burn rate
- How burn rate changed from last week and why
- Your cash runway at current burn
- Which expense categories are driving changes
- Trend analysis: is burn trending up or down over the last 4 weeks?
No spreadsheets. No manual calculations. Just the numbers you need to make smart decisions — delivered before the weekend, when you actually have time to think about your business.