Burn Rate and Runway: 2026 Startup Benchmarks and Calculator

Burn rate and runway effectively set your startup's deadline. Burn rate is the cash your company loses each month, and runway is how many months your bank balance can cover that loss. In our view, a sensible burn buys the most progress toward your next milestone while leaving 9 to 12 months of runway (ideally closer to 12) when your next raise starts.

As a rough 2026 guide, pre-seed companies often burn $20K to $80K a month, seed-stage teams $80K to $250K, and post-Series A companies $400K to $850K. This guide shows one way to measure burn, where commonly cited benchmarks sit, and how investors often read the number.

Burn isn't an accounting line. It's a clock, and every hire, tool and campaign moves the hands.

Definition: Burn rate is the net amount of cash a company spends per month beyond what it collects, and runway is cash on hand divided by that monthly net burn.

What is startup burn rate?

There are two versions. Track both.

Gross burn is total monthly cash outflow: salaries, rent, software, contractors, cloud, marketing, everything. It tells you how expensive the company is to run.

Net burn is gross burn minus cash coming in (revenue collected, not revenue booked). It tells you how fast the bank balance falls. When people say "burn rate" without a qualifier, they usually mean net burn.

Runway is cash in the bank divided by net burn. With $1.8M in the bank and $100K of net burn, runway is 18 months.

Burn multiple is net burn divided by net new ARR over the same period, a metric David Sacks of Craft Ventures introduced in a 2020 essay. Burn $600K in a quarter while adding $300K of ARR, and your burn multiple is 2. It is one of the efficiency metrics investors lean on most at seed and Series A.

Measure all four from actual bank movements, not the accrual P&L. Accrual accounting can hide a cash crunch for months.

Why burn rate matters more than founders think

Burn turns every other decision into a deadline. A company with 24 months of runway can test three channels and be wrong twice. A company with 7 months may need to be right the first time, and will likely raise from a weak position.

The data points the same way. CB Insights' March 2026 analysis of 431 venture-backed companies that shut down since 2023 found that 70 percent of those with an identified reason ran out of capital, and CB Insights stresses that this is usually the final cause rather than the root one: weak product-market fit and bad timing tend to come first. The median failed company in that dataset had raised $11M and shut down a median of 22 months after its last raise.

Investors also read burn as a statement of judgment. High burn with fast growth can signal you found something and are pressing the advantage. High burn with slow growth suggests you haven't found it and are spending anyway. Low burn with slow growth is usually fine at pre-seed and more worrying at Series A.

The failure pattern we worry about most isn't "ran out of money." It's "hired ahead of revenue, couldn't grow into the burn, then couldn't raise the next round at any price." That's why we treat setting burn as a strategy decision. Paul Graham's default alive or default dead test is a quick way to check which side of that line you are on.

Burn rate and runway benchmarks by stage (2026)

These are illustrative ranges, not targets. Hardware, biotech, and other capital-intensive businesses run higher. The round sizes reflect Carta's July 2026 software benchmarks, which found median rounds of $4.1M at seed and $14.4M at Series A; burn ranges assume that money is meant to last roughly 18 to 24 months (a $14.4M Series A spread over 18 to 24 months is $600K to $800K a month).

For team size context, Carta's startup compensation report (published May 2026) put the median seed-stage team at 4 employees.

Rules of thumb that often hold across stages:

• Runway after a raise: 18 to 24 months. Carta's Q2 2025 data put the median gap between a seed round and a Series A at 616 days, a little over 20 months, so less than 18 months may mean fundraising again before you have proven anything new.
• Burn multiple: David Sacks' scale in the Craft Ventures essay rates under 1x as amazing, 1x to 1.5x as great, 1.5x to 2x as good, 2x to 3x as suspect, and above 3x as bad.
• Payroll share: people costs are usually the majority of gross burn at software companies. If payroll leaves no room for anything else, the plan may be fragile.
• Founder salaries: Kruze Consulting's 2026 report, based on anonymized payroll data from its venture-backed clients, puts average CEO pay at $153,000 at seed and $203,000 at Series A. Many pre-seed founders pay themselves far less, and location matters.

One way to set a burn plan, step by step

Step 1: Name the milestone

What would need to be true for the next round to be easy? Start there, not with the budget. For a seed-stage B2B company, CRV's 2026 guide puts the competitive Series A starting point at $2M to $5M in ARR. For a pre-seed company it might be ten paying customers and a repeatable channel. Write the milestone down, with a date.

Step 2: Build a bottom-up budget

List every hire by month at fully loaded cost: salary plus payroll taxes, benefits, equipment, and software. The load on top of salary varies widely with location and benefits, so it is worth pricing it from your payroll provider rather than guessing. For context, the Bureau of Labor Statistics' June 2026 data shows benefits (including paid leave, insurance, and legally required payroll taxes) at 30 percent of US private-sector compensation costs, about 43 cents on top of every wage dollar. Then add non-payroll costs from the actual plan, not a percentage of revenue.

Step 3: Model three scenarios

• Base: the plan as written.
• Downside: revenue lands at 50 percent of plan and you wait two months before cutting.
• Extended raise: the next fundraise takes six months longer than expected.

In each scenario, mark the month runway drops below 12. If the downside case leaves you with fewer than 9 months, your base plan may be burning too much.

Step 4: Set trigger points

Decide now what you will do at 12, 9, and 6 months of runway. For example: at 12, start the raise; at 9, freeze hiring; at 6, cut to a survival budget or pursue an extension or bridge round. Written triggers take some of the emotion out of the decision. It's easier to follow a rule you set when you were calm.

Step 5: Review monthly

Many founders reconcile actual cash to the model on the first business day of each month and share the runway number with their team leads and in their investor updates. In our view, investors who see burn and runway every month tend to be more willing to bridge you if the market turns.

Warning signs your burn rate may be off

Too high:

• Burn multiple above 3 for two consecutive quarters.
• Headcount grew faster than revenue for more than two quarters.
• You are hiring for roles the current product cannot use yet (a VP of Sales with no repeatable motion, for example).
• Runway will fall below 12 months before you reach the next milestone.

Too low:

• You are at seed with 30 months of runway and flat growth. Cash in the bank does not compound; a proven channel can.
• Founders are doing jobs a single hire could do better, and that hire would speed up revenue.
• You are turning customers away because you cannot support them.

Don't skip the second list. Underspending after you've found something that works is its own way to lose.

How investors read your burn and runway

When a seed or Series A investor opens your model, they often check four things, roughly in this order. So do we.

1. Runway at close. Will this round buy 18 to 24 months? If not, why this amount?
2. Burn multiple trend. Is efficiency improving as you grow? A burn multiple that falls from 4 to 2 over three quarters can tell a stronger story than a flat 1.8.
3. What the burn is buying. Engineering to build what customers are already asking for is usually good burn. Brand marketing before product-market fit often is not.
4. Founder judgment. Do you know gross burn, net burn, and runway from memory, and can you explain every large line item?

Investors also compare burn with traction. In an illustrative case, a team burning $150K a month with $40K MRR growing 15 percent monthly looks disciplined. The same burn with $10K MRR growing 3 percent looks like a problem. Our investor-side guide to financial due diligence shows how these checks are done. The usual way out of a bad comparison is revenue growth, which is why we see founder-led sales as one of the highest-leverage uses of early burn.

That is the logic behind 1752vc's Accelerate program, the flagship for early-stage startups ready to grow. It pairs a $100K investment with founder-led go-to-market and sales training, delivered remotely, plus access to a network of 850+ investors, so more of your burn turns into revenue growth that investors will pay for.

"But growth is what gets you the next round"

True. Investors fund momentum, and a company that grew 3x on heavy burn often raises more easily than one that grew 1.5x on a tight budget. Spending hard when something is working can be exactly right.

But the key words are "when something is working." Burn that buys growth shows up in a falling burn multiple. Burn that buys activity shows up as a bigger team and the same revenue. A fresh round can make the second kind feel like the first, which is why we like the idea of running the company as if you hadn't raised (our take on oversized early rounds).

Where we land

Set burn from the milestone backward, not from the bank balance forward. Keep 18 to 24 months after a raise, start the next one at 9 to 12, and let the burn multiple tell you whether to press or pull back.

That's our default. A company with clear pull from customers, or a capital-intensive business, may reasonably run hotter.

A quick burn rate and runway calculator

Fill in these five lines every month:

1. Cash in bank on the first of the month: $______
2. Total cash out last month (gross burn): $______
3. Cash collected from customers last month: $______
4. Net burn = line 2 minus line 3: $______
5. Runway = line 1 divided by line 4: ______ months

Each quarter, add a sixth line: net new ARR, then burn multiple = quarterly net burn divided by net new ARR. If line 5 is under 12 and you are not already raising, that may be your signal.

Illustrative worked example. You start the month with $2.4M in the bank. Last month $210K went out and $60K came in from customers, so net burn is $150K and runway is $2.4M divided by $150K, or 16 months. If net burn holds at $150K for the quarter ($450K) while you add $300K of net new ARR, your burn multiple is 1.5, the top of the "great" band on Sacks' scale. Sixteen months is enough to plan, but with a median seed-to-Series A gap of about 20 months in Carta's data, this company would probably want to be hitting milestones or trimming burn now.

For the funding side of the equation, see our guides to how to raise a seed round and bootstrapping a startup.

The bottom line

Burn rate is a choice you make every month, whether you notice it or not. Make it on purpose.

Runway is how long you can last.

Burn multiple is whether lasting is worth it.

Key takeaways

• Startup burn rate is monthly cash loss; it helps to track gross burn, net burn, runway, and burn multiple from the bank account, not the P&L.
• As a rough 2026 guide, net burn runs $20K to $80K at pre-seed, $80K to $250K at seed, and $400K to $850K after a Series A.
• CB Insights found 70 percent of recently failed venture-backed startups with a known reason ran out of capital, usually after deeper problems.
• A common approach is to set burn from the milestone backward, model a downside case, and keep 9 to 12 months of runway, ideally closer to 12, when you start any raise.
• On David Sacks' burn multiple scale, under 2x is good or better, 2x to 3x is suspect, and above 3x is bad.

Frequently asked questions

What is a good burn rate for a startup?

There is no universal number. In our view, a good burn buys real progress toward your next milestone while leaving 18 to 24 months of runway after a raise. Seed-stage software companies commonly burn $80K to $250K a month, and investors judge that against growth using the burn multiple, where under 2x rates as good or better on David Sacks' scale.

How do you calculate startup burn rate and runway?

Gross burn is total cash out in a month. Net burn is gross burn minus cash collected from customers. Runway is cash in the bank divided by net burn. Bank statements tend to work better than accrual reports, so timing differences do not hide a problem.

How many months of runway should a startup have?

A common target is 18 to 24 months right after a raise, with the next raise starting at 9 to 12 months left, ideally closer to 12. Below 9 months, many founders consider freezing hiring or cutting costs, because fundraising often takes longer than planned.

What is burn multiple and why do investors care?

Burn multiple is net burn divided by net new ARR over the same period. A burn multiple of 2 means you spent $2 to add $1 of recurring revenue. Investors like it because it captures growth and efficiency in one number, and a falling burn multiple suggests the go-to-market engine is working.

When should a startup cut its burn rate?

Many founders cut when runway will drop below 9 months before they can plausibly close a round, when the burn multiple has been above 3 for two quarters, or when the funded plan is clearly not working. In our view it usually works better to cut early and once, protecting the people and spending that drive revenue, rather than making several small cuts that hurt morale.

Sources

• CB Insights: Why Startups Fail, Top Reasons
• Craft Ventures: The Burn Multiple
• Carta: VC Startup Fundraising Benchmarks From 1,000 Rounds
• Carta: Series A Funding Slides in Q2 2025
• Carta: State of Startup Compensation, H2 2025
• U.S. Bureau of Labor Statistics: Employer Costs for Employee Compensation, June 2026
• Kruze Consulting: Startup CEO Salaries 2026
• CRV: Series A Metrics VCs Expect in 2026