Default Alive or Default Dead: The Runway Math, Explained

A startup is default alive if, with expenses held where they are and revenue growing at its recent rate, it reaches profitability before the bank account hits zero. It is default dead if it needs another round of outside money to survive. The test takes about ten minutes in a spreadsheet, and in our view the answer should shape how you spend the next six months.

Definition: Default alive means your current revenue growth carries the company to break-even on the cash you already have; default dead means it does not, so survival depends on investors.

Paul Graham coined the terms in his October 2015 essay "Default Alive or Default Dead?". This guide turns the idea into a formula, runs a month-by-month projection with stress tests, and lays out the recovery plan we would consider if the answer is dead. For benchmarks on how much to burn by stage, see our companion guide to burn rate and runway; this page is about the survival test itself.

Most founders know their runway. Far fewer know whether they'll ever need to raise again.

What default alive means, and why we ask it first

Once a company has been operating for eight or nine months, this is one of the first questions we'd want its founders to answer. On the money left, with costs flat and revenue growing at the rate of the last several months, do you reach profitability?

Graham's essay reported that half the founders he asked did not know. That gap is the point. A founder who can't answer is driving at night without a fuel gauge, hoping the next town has a station.

Three features make the test sharper than ordinary runway math:

It is not the same as profitable. A default alive company can still burn cash every month. What keeps it alive is that revenue growth closes the gap before the money runs out.
It is binary. The projection either crosses break-even with cash to spare or it doesn't. That tends to force honesty.
It assumes no new money on purpose. Try saying your real plan out loud: "We are default dead and counting on investors to rescue us." If that sentence makes you wince, the wince is useful information.

The question also gains weight over time. In the first months it means little, because there isn't enough revenue history to project. Somewhere around the first year it tends to become critical. We'd rather founders ask too early than too late. Worrying early costs a little. Worrying late can cost the company.

How to calculate default alive: the formula

You need three numbers, all readable from your bank statements: cash in the bank, money coming in and money going out. From those:

Net burn (monthly)        = expenses - revenue
Runway (months)           = cash / average net burn   (use a 3-month average if spending is lumpy)
Monthly growth rate g     = (revenue this month - revenue last month) / revenue last month

Plain runway assumes revenue stays flat. The default alive test adds growth. With expenses E held constant, starting monthly revenue R and monthly growth g:

Months until revenue covers expenses:  n = ln(E / R) / ln(1 + g), rounded up
Cash needed to get there:              C = n x E - R x ((1 + g)^n - 1) / g
Default alive if:                      cash on hand > C, with a safety margin

C is simply the sum of every month's burn until revenue catches expenses. Trevor Blackwell's online growth and funding calculator, which Graham links from the essay, runs on the same assumptions (constant expenses, steady revenue growth). It carries a caveat worth keeping: if you had exactly the amount calculated, your bank balance would hit zero in the month you became profitable. A comfortable margin above it is usually wise.

We prefer a month-by-month projection to the closed-form formula, because it lets you raise expenses, add a planned hire or model a price change. Expenses rarely hold still in practice. A hire costs more than salary: a common rule of thumb adds 25 to 50 percent once equipment, space and benefits are counted. Founders often undervalue their own time, and paid acquisition tends to get pricier once your most motivated early users are already in.

Worked example: a month-by-month default alive projection

Take an illustrative seed-stage B2B software company with these numbers today:

Cash in the bank: $1,500,000
Monthly expenses: $160,000
Monthly revenue: $45,000, growing 7 percent a month on average over the last six months

Naive runway says $1,500,000 / $115,000 of net burn = about 13 months, which sounds alarming. But burn shrinks as revenue grows. Projecting month by month (numbers computed in Python and rounded):

Month	Revenue	Net burn	Cash at month end
1	$45,000	$115,000	$1,385,000
6	$63,115	$96,885	$861,898
12	$94,718	$65,282	$384,980
18	$142,147	$17,853	$149,956
19	$152,097	$7,903	$142,053
20	$162,744	-$2,744 (profit)	$144,797

The formula agrees: n = ln(160,000 / 45,000) / ln(1.07) = 18.7, so 19 months of burn, and C = $1,357,947. The company is default alive, crossing break-even in month 20.

Look at the low point, though: $142,053, less than one month of expenses. Alive on paper. Fragile in practice.

Now stress-test it, a step many founders skip:

Growth slows to 5 percent a month. The company runs out of cash in month 17. The formula says it would need about $1.86M to reach break-even. Default dead.
Growth holds at 7 percent, but expenses creep up 3 percent a month (a hire every quarter, rising ad costs). Cash runs out in month 13. Default dead.
Growth is 5 percent, and the founders cut expenses to $130,000 now. Break-even arrives in month 23 with about $374,000 still in the bank. Default alive, with a real cushion.
Same cut, plus a price increase that lifts current revenue from $45,000 to $52,000. Break-even moves to month 20 with about $619,000 left.

Two lessons fall out of this. First, a 2-point difference in monthly growth swings the verdict, so it usually helps to use the growth you've actually achieved over several months, not the growth in your pitch deck. Second, the levers you control today (cost and price) can move the answer as much as the growth rate you hope for.

Why founders dodge the default alive question

Each of these feels reasonable in the moment. Each can turn into a trap.

Assuming the next round will be easy. The more a plan depends on the next raise, the weaker your hand when you make it. Each stage also has fewer investors able to write the check, and there are fewer Series A rounds than seed rounds. Carta's data shows the median gap between a seed round and a Series A on its platform reached 616 days in Q2 2025 (published September 2025), a little over 20 months. A plan that assumes a quick follow-on may be ignoring that clock.
Tracking pitch metrics, not survival metrics. Top-line revenue, new accounts, month-over-month growth and hiring plans are what investors ask about. Burn, retention and expansion from existing customers often decide whether you live. Many founders find it helps to run the company on both sets of numbers.
Borrowing their investors' risk appetite. A fund with many companies can push every one of them to grow fast, because a blow-up costs the fund one bet out of dozens. For the founder, it costs everything. Neither side is wrong. It's just worth knowing whose risk you're carrying.
Missing a gradual slide. The slide is gradual. Graham's December 2014 essay "The Fatal Pinch" describes the pattern well: cash left, growth that is only okay, and founders who overestimate their chances of raising. That optimism makes them slack about profitability, which lowers those chances further.

Underneath most of these sits one habit: hiring ahead of revenue. In our view it's the most common way a funded startup turns itself default dead. Graham's essay makes the same point and notes that Airbnb waited four months after YC before hiring its first employee.

If you are default dead: a seven-step recovery plan

The mechanics are simple: grow revenue faster, cut costs, or both. The hard part is doing it early and honestly. Here's one order we'd consider; your situation may call for a different one.

Get the exact numbers quickly. Cash, trailing three-month average burn, trailing growth rate, and every contractual obligation (leases, vendor minimums, debt payments). Many founders review them weekly, and daily when runway is short. We treat runway as an operating number, not a slide.
Run the projection with no new money. Use the formula above, then stress-test growth and expenses. If the answer is dead, it's usually better to act now than after one more fundraising attempt.
Pull the revenue levers first. Making more money right away is often the least painful fix. Pricing is a natural place to start: if you lose money on every sale, it may be worth raising prices even if you sell to fewer customers. Our unit economics guide shows how to check whether each customer is profitable.
Cut where the money actually goes. Snacks and perks are rarely the problem; headcount usually is. The next lever is ad spend that keeps growing while payback periods lengthen. Real estate deserves a hard look too: leases are binding, hard to exit and a cause of death often cited for later-stage companies.
Cut once, and treat people well. If you reduce staff, we'd treat departing employees generously and be transparent with the ones who stay. As a rule of thumb, one deep cut tends to hurt less than three shallow ones.
Reforecast and set a trigger. After the changes, rerun the projection. Write down the cash balance at which you'll make the next decision, so you aren't deciding in a panic.
Know the point of no return. YC's Dalton Caldwell draws a line we find useful: in his view, with under three months of cash you need to face the shutdown scenario, and in many cases under two months is the point of no return. At that stage the usual priority is to pay severance, taxes and payroll obligations, and use the remaining cash for an orderly wind-down with your lawyers' help.

A turnaround can be fast when founders act on the numbers. Justin.tv, which had raised roughly $7M to $8M, was earning about $750,000 a month against about $1M of expenses, with about $500,000 left, when its founders cut staff and put pre-roll ads on everything. It went from an August decision to break-even by October and, by the founders' own account, about $1.2M of profit by the end of December. The idea for Twitch came once the team was no longer fighting for survival. If the numbers point to a deeper change of direction, our guide on how to pivot a startup covers that decision.

One more thing about raising from a default dead position: you likely have less leverage than you think. An opportunistic investor or acquirer may do well by stalling while you get more desperate, and there is rarely a real market for a company that is out of cash. Being default alive tends to give you double leverage. You pitch better when you don't need the deal, and the investor knows it. If you do end up raising under pressure, read our guides to bridge rounds and down rounds before you sign anything.

A monthly default alive check you can copy

One option is to put this at the top of your finance review every month, and at the top of your investor updates. Leave revenue, burn and runway off the top of an update and many readers will assume the worst.

DEFAULT ALIVE CHECK: [Month, Year]
Cash in bank (today):                         $_______
Revenue this month / 3-month average:         $_______ / $_______
Expenses this month / 3-month average:        $_______ / $_______
Net burn (3-month average):                   $_______
Plain runway (cash / net burn):               ___ months
Revenue growth, trailing 3 and 6 months:      ___% / ___% per month
Months to break-even at trailing growth:      ___
Cash needed to reach break-even:              $_______
Verdict:                                      ALIVE / DEAD
Cash left at break-even (safety margin):      $_______
Stress test (growth -2 pts, costs +3%/mo):    ALIVE / DEAD
Committed costs I cannot cut in 90 days:      _______
Decision trigger (cash level for next move):  $_______
One switch that would make us profitable:     _______

The last line matters more than it looks. You don't have to be profitable today. Knowing the one expense you could switch off to get there is a safety net in its own right.

"But venture-backed companies are supposed to burn"

That's a fair objection, and serious investors make it. Venture money exists to fund growth that revenue can't pay for yet. A company that stays default alive at all costs may grow too slowly to matter.

There's data behind the difference. SaaS Capital's 2026 spending benchmarks (1,000+ private B2B SaaS companies surveyed in March 2026, published June 2026) found that 83 percent of bootstrapped companies were profitable or within two percentage points of break-even, against 52 percent of equity-backed companies. Venture money buys the option to run default dead on purpose.

But the key words are "on purpose." Before product-market fit, extra money mostly buys time. Spending harder tends to make more sense once you have clear signals of fit and an acquisition channel with a known payback period. Burning because you chose to is a strategy. Burning because nobody ran the numbers is drift.

Our take: default dead works best as a choice, not an accident

We think founders benefit from knowing the answer every month. That doesn't mean every company needs to be default alive every month. Here's where we land, including where serious investors frame it differently.

Cycle-driven vs. always-on. In May 2022 Sequoia gave its founders an "Adapting to Endure" session and a breakout by Ravi Gupta and Sonya Huang, "Extending Your Runway" (published in June 2022), built on the premise that founders should conserve cash as funding becomes more expensive. We broadly agree with the advice but frame it differently: default dead is a risk in any market, and a boom may only hide it.
How much runway to hold. Carta's 616-day seed-to-Series A median, a little over 20 months, is one reason we often suggest 18 to 24 months of runway after a raise as a rough target, with the next raise starting at 9 to 12 months left. Others argue for less runway and faster iteration; it depends on your market.
The planning habit we like. Assume the money you have is the last you'll ever raise, and start working on raising or profitability with about 12 months left. It's close to our view that founders should run the company like they didn't raise it, even when the round was generous.
Default alive is a floor. It isn't a growth strategy. It's the thing that lets you pick one.

Common mistakes with the default alive test

Using hoped-for growth. Trailing growth over three to six months is usually a safer input. The worked example shows a 2-point change can flip the verdict.
Holding expenses flat on paper while hiring in reality. Add every planned hire at fully loaded cost.
Treating credits and discounts as permanent. Cloud and model credits expire, so model the real cost.
Dividing the round by 24 months and spending to that number. Many founders find it safer to spend the minimum needed to make progress, not the maximum the round allows.
Waiting for the next fundraise before acting. Each month of delay tends to shrink your options and your leverage.
Keeping it from investors. Founders who go quiet for a year often reappear with one month of cash left. Monthly updates keep the people who can help informed while help is still useful.

1752vc's Accelerate program works on the lever this test rewards most: revenue growth. It invests $100K, runs remote with rolling admissions, and centers on founder-led sales training, so founders learn to close customers themselves instead of hiring ahead of revenue. That makes it a fit for a company that is close to default alive and needs to steepen its revenue line rather than add headcount.

The bottom line

Default alive isn't about being cheap. It's about knowing whether your company survives if the market says no.

Runway tells you how long you have.

Default alive tells you whether you need anyone's permission to keep going.

Key takeaways

Default alive means your current revenue growth reaches break-even on the cash you already have; default dead means survival depends on raising more.
Compute it with cash, net burn and trailing growth: months to break-even n = ln(E / R) / ln(1 + g), and cash needed is the sum of burn until then.
Stress-test the answer: in our example, dropping growth from 7 to 5 percent a month turns a default alive company into one that runs out of cash in month 17.
If you are default dead, acting early usually helps: a common order is prices and revenue first, then headcount, ad spend and binding commitments, then a reforecast.
In our view, being default alive gives you leverage in fundraising and room to make ambitious bets; being default dead tends to hand control to investors.

Frequently asked questions

What does default alive mean for a startup?

A startup is default alive when its current revenue growth will carry it to profitability before its cash runs out, with no new investment. Paul Graham introduced the term in October 2015. A default alive company can still be losing money each month; what matters is that the gap between revenue and expenses closes while there is still money in the bank.

How do you calculate whether your startup is default alive?

Start with cash in the bank, average monthly net burn and trailing monthly revenue growth. Project revenue forward month by month with expenses held flat, subtract each month's burn from cash, and see whether revenue passes expenses before cash reaches zero. Trevor Blackwell's online calculator does the same thing. Add a safety margin and stress-test lower growth and rising costs.

Can a startup be default alive and still unprofitable?

Yes. Default alive describes a trajectory, not a current profit. A company losing $100,000 a month can be default alive if revenue is growing fast enough to cover expenses before the cash is gone. The reverse also holds: a company close to break-even with flat revenue and rising costs can be default dead, even though its monthly loss looks small.

When is it too late to fix a default dead startup?

With under three months of cash, YC's Dalton Caldwell suggests founders plan for a possible shutdown, and in many cases under two months is the point of no return. At that stage the usual priority is paying payroll, taxes and severance and winding down in an orderly way. Fixes such as price increases and cost cuts can take months to show up in the bank balance.

Sources

Disclaimer: This guide is for general education only and is not legal, tax or investment advice. Laws, market data and program terms change, so it may not reflect the latest developments or fit your situation. Treat it as a starting point, not a source of truth, and talk to a qualified lawyer, accountant or financial adviser before you make decisions.