1. Burn Rate — Gross vs. Net

Burn rate is how much cash a company spends each month. For a company with revenue, gross burn (total spend) and net burn (spend minus revenue) diverge, and investors check both numbers. Metric | Formula | What It Means || Gross Burn | Total monthly spend (payroll + operations + marketing + contractors) | The absolute size of your cost structure || Net Burn | Gross burn minus monthly revenue | The actual rate cash is disappearing || Runway | Cash on hand ÷ monthly net burn | How many months you can operate on current funds At a pre-revenue seed stage, gross burn and net burn are identical. Once revenue kicks in, net burn drops, and once revenue exceeds costs, you enter what's known as 'default alive' territory.

2. Runway — Your Time Until the Next Round

Runway answers a single question: how many months can the company operate on the cash currently in the bank? After a seed round, the standard target is 18-24 months of runway, with the goal of closing Series A well within that window. Round | Recommended Runway | When to Start Prepping the Next Round || Pre-Seed → Seed | 12-18 months | Start fundraising conversations with 6 months of runway left || Seed → Series A | 18-24 months | Start fundraising conversations with 9 months of runway left || Series A → B | 18-24 months | Start fundraising conversations with 9 months of runway left Start fundraising with six months of runway or less, and your negotiating leverage collapses. Investors can spot a company that's racing against the clock, and both valuation and terms get discounted accordingly.

3. Burn Multiple — An Efficiency Metric for Scaling

Once you're scaling post-Series A, an additional efficiency metric enters the picture: burn multiple — how many dollars you burned to generate one dollar of ARR. Series A and B investors weigh this number about as heavily as revenue growth rate. Burn Multiple | Efficiency Rating || 3x | Suspect — needs a cost-efficiency review Formula: Burn Multiple = Net Burn ÷ Net New ARR. At the seed stage, ARR is still too small for this to mean much, but from Series A onward it becomes a core metric.

6. The Standard Format for Investor Reporting

In a monthly or quarterly investor update, the standard way to report burn and runway is in four lines. Cash balance — the bank balance as of month-end / Monthly net burn — averaged over the trailing three months / Runway — current cash ÷ monthly net burn / Next round timeline — your target date to kick off fundraising Sending these four lines before an investor has to ask 'so what's the plan for next year?' is what builds trust. Companies that skip regular reporting tend to be perceived as carrying more hidden risk, not less.

7. Self-Check: A Founder's Checklist

Can you state this month's net burn instantly — within a second? / Is your current runway closer to 12, 18, or 24 months? / Has your burn been stable over the past three months, or is it trending up? / Is your target date to start the next fundraise set while you still have 9+ months of runway left? / Do you have a Plan B ready for the 6-months-of-runway mark — a bridge round, cost cuts, or government support? / Are you reporting burn and runway to your investors on a monthly or quarterly basis? OpenSeed's CFO agent takes your business plan's funding requirements and revenue projections as input and automatically calculates monthly burn, runway, and the right time to start your next round. Free during the current beta.

Fundraising

Burn Rate and Runway — The Numbers Investors Actually Look At

2026.05.05·8 min·OPENSEED

The first thing an investor checks in a pitch meeting isn't revenue or users — it's burn rate and runway. How much cash the company burns each month, and how many months remain until the next round is due — these two numbers are the starting point for every negotiation. This guide covers exactly how to calculate burn rate and runway, how to spot warning signs early, and how to respond.

Intro.

#Burn Rate — Gross vs. Net

Burn rate is how much cash a company spends each month. For a company with revenue, gross burn (total spend) and net burn (spend minus revenue) diverge, and investors check both numbers.

Metric	Formula	What It Means
Gross Burn	Total monthly spend (payroll + operations + marketing + contractors)	The absolute size of your cost structure
Net Burn	Gross burn minus monthly revenue	The actual rate cash is disappearing
Runway	Cash on hand ÷ monthly net burn	How many months you can operate on current funds

TIP

At a pre-revenue seed stage, gross burn and net burn are identical. Once revenue kicks in, net burn drops, and once revenue exceeds costs, you enter what's known as 'default alive' territory.

#Runway — Your Time Until the Next Round

Runway answers a single question: how many months can the company operate on the cash currently in the bank? After a seed round, the standard target is 18-24 months of runway, with the goal of closing Series A well within that window.

Round	Recommended Runway	When to Start Prepping the Next Round
Pre-Seed → Seed	12-18 months	Start fundraising conversations with 6 months of runway left
Seed → Series A	18-24 months	Start fundraising conversations with 9 months of runway left
Series A → B	18-24 months	Start fundraising conversations with 9 months of runway left

주의

Start fundraising with six months of runway or less, and your negotiating leverage collapses. Investors can spot a company that's racing against the clock, and both valuation and terms get discounted accordingly.

#Burn Multiple — An Efficiency Metric for Scaling

Once you're scaling post-Series A, an additional efficiency metric enters the picture: burn multiple — how many dollars you burned to generate one dollar of ARR. Series A and B investors weigh this number about as heavily as revenue growth rate.

Burn Multiple	Efficiency Rating
< 1x	Amazing — revenue growth is outpacing spend
1x - 2x	Great — efficient growth
2x - 3x	Good — an average level
> 3x	Suspect — needs a cost-efficiency review

Formula: Burn Multiple = Net Burn ÷ Net New ARR. At the seed stage, ARR is still too small for this to mean much, but from Series A onward it becomes a core metric.

#Warning Signs of a Shrinking Runway — Patterns to Catch Early

Monthly net burn rises more than 10% for three consecutive months — a sign you're losing control of costs
Hiring is outpacing revenue growth — payroll climbs past 70% of total spend
New customer growth stalls even as marketing spend increases — CAC is spiking
Inventory or contractor costs grow abnormally relative to revenue — a sign of weakening pricing leverage
Churn rises relative to new customers — net new ARR turns negative

주의

A runway crisis never arrives out of nowhere. If two or more of these signs show up at once, redesign your cost structure immediately.

#Strategies for Responding to a Shrinking Runway

Strategy	Effect	Risk
Bridge round	Adds 6-12 months of runway	Requires existing investor buy-in, valuation stays frozen
Cost cutting	Immediately reduces monthly burn	Hurts morale, risks losing key talent
Accelerating monetization	Reduces net burn	Risks disrupting your PMF-validation trajectory
Project-based revenue	Brings in cash	Muddies a pure SaaS business model
Government support programs	Covers part of your costs	Administrative burden, time-consuming

Which strategy makes sense depends heavily on timing and stage. A bridge round at the seed stage means a frozen valuation plus extra dilution, while cost-cutting right before a Series B can make it hard to rebuild investor confidence.

#The Standard Format for Investor Reporting

In a monthly or quarterly investor update, the standard way to report burn and runway is in four lines.

Cash balance — the bank balance as of month-end
Monthly net burn — averaged over the trailing three months
Runway — current cash ÷ monthly net burn
Next round timeline — your target date to kick off fundraising

TIP

Sending these four lines before an investor has to ask 'so what's the plan for next year?' is what builds trust. Companies that skip regular reporting tend to be perceived as carrying more hidden risk, not less.

Summary.

#Self-Check: A Founder's Checklist

Can you state this month's net burn instantly — within a second?
Is your current runway closer to 12, 18, or 24 months?
Has your burn been stable over the past three months, or is it trending up?
Is your target date to start the next fundraise set while you still have 9+ months of runway left?
Do you have a Plan B ready for the 6-months-of-runway mark — a bridge round, cost cuts, or government support?
Are you reporting burn and runway to your investors on a monthly or quarterly basis?

CTA

OpenSeed's CFO agent takes your business plan's funding requirements and revenue projections as input and automatically calculates monthly burn, runway, and the right time to start your next round. Free during the current beta.

광고

Calculate Your Burn and Runway Instantly, Alongside Your Business Plan

Our CFO agent automatically derives monthly burn and runway from your funding plan.

🔒 Free during beta · your submission isn't saved

Start Free AI Feedback →

RELATED · Same categoryFundraising

Why Seed-Stage VCs Weigh 'Team Risk' So Heavily — Persuasion Strategies for Solo Founders, Non-Technical CEOs, and Teams With No Domain Experience2026.07.10 · 8 min Due Diligence and Data Room Prep — What VCs Demand After the Term Sheet2026.06.30 · 9 min How to Use Follow-Up Emails After an Investor Pass to Stay in the Relationship and Land the Next Round2026.06.30 · 8 min They Were Speaking Different Languages — Why Great Technology Fails When It Doesn't Translate2026.06.29 · 8 min The Shareholder Consent and Board Resolution Documents Founders Must Prepare Before Series A2026.06.28 · 8 min

← Back to Discovery