Startup Burn Rate Calculator
- Free Calculator
- Interactive
- Real-time Results
This calculator is powered by Founderpath — built to help founders access capital faster, deploy it smarter, and stay in control of their cash flow.
How it works
3 steps · Instant results- 01Enter Your FinancialsInput your monthly revenue, expenses, cash on hand, and expected growth rate
- 02Calculate Burn MetricsInstantly see your net burn rate, cash runway, and burn multiple (Bessemer framework)
- 03Explore ScenariosSee how cost cuts and revenue growth extend your runway with interactive charts
Financial Inputs
Enter your current monthly financials
Total monthly recurring revenue (MRR)
Total monthly operating expenses (payroll, infrastructure, etc.)
Current cash balance in the bank
Expected month-over-month revenue growth
Key Results
Your burn rate and runway metrics
Formulas: Net Burn = Expenses - Revenue | Runway = Cash / Net Burn | Burn Multiple = Net Burn / Net New ARR
Key Insights
Gross burn is total monthly spend. Net burn subtracts revenue — it's what actually drains your bank account.
Burn multiple below 2x signals efficient growth. Above 4x means you're spending too much per dollar of new ARR.
Most VCs expect 18-24 months of runway after a raise. If you're below 12 months, start fundraising now.
Non-dilutive funding like revenue-based financing can extend runway without giving up equity.
Cash Balance Over 24 Months
Compare scenarios to see how changes extend your runway
Scenario Comparison
How different strategies extend your runway
What Is Burn Rate?
Burn rate measures how quickly a startup spends its cash reserves. It's one of the most critical SaaS KPIs for founders and investors because it determines how long a company can operate before needing additional funding.
There are two types of burn rate that every founder should track:
- Gross burn rate is your total monthly operating expenses — payroll, rent, infrastructure, marketing, and everything else you spend. It tells you the total cost of running your business regardless of revenue.
- Net burn rate is your gross burn minus revenue. This is the number that actually matters for runway calculations because it represents how much cash you lose each month.
How to Calculate Cash Burn Rate
For example, if your startup spends $80,000 per month and generates $50,000 in revenue, your gross burn rate is $80,000 and your net burn rate is $30,000. This cash burn calculation means you're losing $30,000 in cash each month.
Cash Runway Formula
Using the example above, with $500,000 in the bank and a $30,000 net burn rate, your runway is approximately 16.7 months. Most VCs and experienced founders recommend maintaining at least 18-24 months of runway, especially after a fundraise.
If your runway drops below 12 months, it's time to either cut costs, accelerate revenue, or start fundraising. Options like revenue-based financing can extend your runway without dilution while you focus on growth.
Burn Multiple Formula
Burn multiple, popularized by Bessemer Venture Partners, measures how efficiently you're converting cash into growth. It answers the question: "How much are you burning for each dollar of new ARR?"
| Burn Multiple | Rating | What It Means |
|---|---|---|
| Below 1x | Amazing | Generating more ARR than you burn — extremely capital efficient |
| 1x - 2x | Good | Healthy growth efficiency, attractive to investors |
| 2x - 4x | Needs Work | Common for early-stage but needs improvement to sustain |
| Above 4x | Unsustainable | Spending too much per dollar of growth — requires action |
Burn Rate Benchmarks by Stage
What counts as a "good" burn rate depends heavily on your stage and growth rate. Here are typical benchmarks:
| Stage | Typical Net Burn | Target Runway | Burn Multiple |
|---|---|---|---|
| Pre-Seed / Seed | $20K-$50K/mo | 18-24 months | 3x-5x (acceptable) |
| Series A | $100K-$300K/mo | 18-24 months | 1.5x-3x (good) |
| Series B+ | $500K-$1M+/mo | 24+ months | Below 2x (expected) |
How to Reduce Your Burn Rate
If your runway is shorter than you'd like, here are five proven strategies to reduce burn. Before cutting anything, it is worth seeing which lines are actually unusual — the SaaS spending benchmarks tool compares your hosting, sales, marketing, R&D and G&A spend against the published 2026 medians for private B2B SaaS companies, and ranks the gap in dollars rather than percentage points.
- 1. Audit your tech stack. Most SaaS companies overspend on tools by 20-30%. Cancel unused subscriptions, consolidate overlapping tools, and renegotiate annual contracts.
- 2. Optimize headcount allocation. Hiring is the largest expense for most startups. Consider whether each role directly contributes to revenue or product-market fit. Delay non-critical hires. For a sales hire, the commission calculator shows the monthly cash the plan adds to burn while the rep is still ramping, which is when it hurts most.
- 3. Right-size your infrastructure. Cloud costs often scale faster than revenue. Use reserved instances, auto-scaling, and regular cost optimization reviews.
- 4. Accelerate revenue. Sometimes the best way to reduce net burn is to grow revenue faster. Focus on upselling existing customers, reducing churn, and shortening sales cycles.
- 5. Consider non-dilutive funding. Instead of cutting to the bone, non-dilutive funding options like SaaS financing or bootstrapping strategies can extend your runway while you optimize unit economics.
Related SaaS Calculators
Burn rate is one piece of the financial picture. Use these calculators to track the metrics that drive your runway:
Financial Health
- Profit and Loss Statement TemplateBuild a P&L and export it to Excel, Google Sheets or PDF
- SaaS Chart of Accounts TemplateGenerate a SaaS-specific chart of accounts and export it to Excel or Google Sheets
- SaaS Deferred Revenue ScheduleReconcile monthly billings, revenue and deferred balances across contracts
- SaaS Spending BenchmarksCompare departmental spend with 2026 private B2B SaaS medians
- ARR CalculatorCalculate annual recurring revenue from monthly subscriptions and annual contracts
- MRR CalculatorBreak down new, expansion, contraction, and churned MRR
- Churn Rate CalculatorMeasure customer and revenue churn with annualized projections
- NRR CalculatorTrack net revenue retention and gross revenue retention rates
- SaaS Quick Ratio CalculatorMeasure growth efficiency — MRR gained for every dollar lost to churn
- Growth Rate CalculatorCalculate MoM, YoY, and CAGR growth rates from revenue data
- Break-Even CalculatorFind the units and revenue needed to cover all costs and reach profitability
- EBITDA Margin CalculatorCalculate EBITDA margin and benchmark against SaaS and industry norms
- SaaS Profit Margin CalculatorReconcile net profit margin against gross, operating, and EBITDA margin
- SaaS Runway CalculatorSee how many months of cash you have left and model scenarios to extend it
- SaaS Financial Model TemplateForecast MRR, ARR, burn, and runway over 24 months with scenario comparison and CSV export
- SaaS ROI CalculatorDecide whether a hire, campaign, or tool returns more than it costs
- SaaS Proration CalculatorWork out what a mid-cycle upgrade, downgrade, or cancellation costs
- SaaS Debt Capacity CalculatorSee how much debt your recurring revenue can safely carry, and what limits it
- Customer Concentration CalculatorSee how much of your revenue one customer holds, and what losing them costs
Customer Metrics
- CAC CalculatorMeasure customer acquisition cost and LTV:CAC ratio
- LTV CalculatorCalculate customer lifetime value, lifespan, and LTV:CAC ratio
- Payback Period CalculatorCalculate how long it takes to recover customer acquisition costs
- Viral Coefficient CalculatorMeasure your K-factor and model viral growth scenarios
- SaaS Magic Number CalculatorMeasure sales efficiency — net-new ARR per dollar of S&M spend
- SaaS Win Rate CalculatorCalculate win rate, segment it, and size the pipeline your ARR target needs
- SaaS Cohort AnalysisSee retention by customer start month, not one blended churn number
- SaaS Renewal Rate CalculatorMeasure renewal rate on the contracts that were actually up for renewal
Pricing & Valuation
- Markup CalculatorCalculate markup percentage, selling price, profit, and gross margin
- SaaS Pricing Model TemplateCompare flat, per-seat, usage and tiered pricing on margin, MRR and price floor
- SaaS Price Increase CalculatorModel the MRR and cash impact of repricing existing customers
- Equity Dilution CalculatorModel how funding rounds affect founder ownership over time
- SaaS Valuation CalculatorEstimate your company value using ARR multiples and growth-rate benchmarks
- Revenue Multiple CalculatorSee what ARR multiple your growth rate, NRR, and gross margin justify
- Rule of 40 CalculatorScore your growth-plus-profitability against the Rule of 40 benchmark
Still updating burn rate in a spreadsheet?
See it update automatically, every day.
Founderpath connects your bank accounts and calculates your burn rate in real time. Know exactly how fast you are spending — and how long your cash will last.
- Real-time burn trackingSee your gross and net burn rate update daily from bank transaction data. No waiting for month-end closes.
- Cash runway projectionKnow exactly how many months of runway you have left based on current spending. Get alerted when runway drops below a threshold.
- Spending categorizationTransactions automatically categorized so you can see where money goes — payroll, software, marketing, infrastructure.
- Scenario modelingModel how a new hire, a marketing push, or a funding round changes your burn rate and runway. Plan with confidence.
- Extend runway without dilutionIf your runway is shorter than you would like, see how much non-dilutive capital you qualify for. Bridge the gap without giving up equity.
Frequently asked questions
- Gross burn rate: Total monthly operating expenses (payroll, rent, tools, marketing, etc.)
- Net burn rate: Monthly expenses minus monthly revenue — the actual cash you lose each month
Gross Cash Burn Rate = Total Monthly Operating Expenses
Net Burn Rate = Monthly Expenses - Monthly Revenue
For example, if you spend $80,000/month and earn $50,000/month in revenue, your net burn rate is $30,000/month. This means you're losing $30,000 in cash each month.
If your revenue exceeds expenses, congratulations — you're cash-flow positive and your net burn is negative (meaning you're adding cash, not losing it).
Burn Multiple = Net Burn / Net New ARR
Benchmarks:
- Below 1x: Amazing — you're generating more ARR than you burn
- 1x - 2x: Good — healthy growth efficiency, attractive to investors
- 2x - 4x: Needs improvement — common for early-stage but not sustainable
- Above 4x: Unsustainable — spending too much per dollar of new revenue
- 18-24 months after a fundraise — this gives you time to hit milestones for your next round
- 12+ months minimum — below this, you should be actively fundraising or cutting costs
- 6 months or less — this is a critical situation requiring immediate action
Net burn rate subtracts your revenue from gross burn. It represents the actual cash you're losing each month.
Example: A company spending $100,000/month (gross burn) with $60,000/month in revenue has a net burn of $40,000/month. The gross burn tells you what it costs to run the business; the net burn tells you how fast your bank account is shrinking.
For runway calculations, always use net burn rate.
- Audit your tech stack: Most companies overspend on SaaS tools by 20-30%. Cancel unused subscriptions.
- Optimize headcount: Delay non-critical hires and ensure every role ties to revenue or product-market fit.
- Right-size infrastructure: Use reserved instances, auto-scaling, and regular cloud cost reviews.
- Accelerate revenue: Upsell existing customers, reduce churn, and shorten sales cycles.
- Consider non-dilutive funding: Revenue-based financing can extend runway without giving up equity.
Cash Runway = Cash on Hand / Net Burn Rate
For example, with $500,000 in the bank and a $30,000/month net burn rate, your runway is approximately 16.7 months.
This is a simplified calculation assuming constant burn. In reality, your burn rate may change as you grow revenue or adjust spending — which is why the scenario comparison in our calculator is so useful.