Unit Economics metric

Burn Rate. The rate the tank is draining — the one cash number you watch with your own eyes every month, profitable or not.

Burn Rate is the cash leaving your company each month. Gross burn is everything you spend; net burn is what you spend minus what comes in — the number that actually shrinks the bank account. Where Burn Multiple is a quarterly efficiency ratio for the board, Burn Rate is the operational number you check with your own eyes, monthly, and weekly when things get tight. It's the most universal cash metric in the set: every company has one, profitable companies included. And the thing that signals trouble isn't the level — plenty of healthy companies burn a lot — it's the trajectory. A loss that widens every month is the warning, long before the number itself looks scary.

What it is

The cash going out the door per month. Gross burn is total spend; net burn is spend minus the cash coming in. I always watched gross — it's the more conservative read, because it doesn't assume the revenue shows up. Know which one you're quoting, and don't move the goalposts between them.

Measurement period

Monthly.

This is the operating cash number, not a board-deck ratio — read it monthly at a minimum, and weekly when cash is tight. The whole point is to catch the trajectory before it catches you.

Formula

Monthly cash out − Monthly cash in = Net burn

Gross burn is the cash-out figure on its own. Net burn is the one that drains the bank account — but gross is the conservative number to manage to.

When to review

Monthly.

At least once a month, more when cash is tight. Pair it with cash on hand every time you look — the rate only means something next to how much tank is left.

Why it matters

The bank-account ritual. Once a month, every month, for sixteen years.

This is the one I actually ran. At least once a month, I'd look at our cash on hand, set it against our monthly spend, and work out how many months of survival that bought us. That was the whole ritual — no spreadsheet wizardry, just the bank balance and the burn, every month for sixteen years. I tracked gross burn rather than net, because it's the more conservative number: it assumes the cash coming in might wobble, and plans for the version where it does.

When cash got tight, the ritual came with a reflex. Before cutting anything, the fastest lever to pull is on the cash already owed to you — I'd look at the ARR and check whether any customers were late or past due, and chase that money in. Collecting a stack of overdue invoices buys you survival months faster than any expense cut, and it costs you nothing but a few phone calls. People reach for the scalpel first; the receivables are sitting right there.

And here's why this matters even though we were profitable, with net burn that was actually negative: every company needs a rainy-day fund for the things you don't see coming. A GDPR implementation lands on your desk. An unforeseen tax bill shows up. Something breaks that has to be fixed now. If you don't know your burn and your cushion cold, an ordinary surprise becomes an emergency. The burn rate isn't only a metric for companies losing money — it's how anyone, profitable or not, knows whether they could absorb a bad month without flinching.

When cash got tight, the first lever wasn't cuts — it was collection. Chase the customers who are late or past due before you reach for the scalpel. Overdue invoices buy survival months faster than any expense cut, and cost you nothing but a few phone calls.

Worked example

Three companies, similar cash. The trajectory is the whole story.

Each starts the quarter with roughly the same cash in the bank. What separates them isn't how much they burn — it's which direction the burn is heading. A flat burn and a widening one feel the same in any single month; across a quarter, they're a healthy company and a crisis. That's why you watch the trend, not the snapshot.

Controlled

15 mo

Monthly net burn~$80K flat
Trend vs. planOn plan
Cash on hand$1.2M
Survival~15 months
ReadHealthy — flat and predictable

Burn is steady and tracking the plan, so the survival clock barely moves month to month. This is what control looks like — not zero burn, but a burn you can predict and have budgeted for.

Creeping

9 mo

Monthly net burn$90K → $130K
Trend vs. planDrifting over
Cash on hand$1.2M
Survival~9 mo, ticking down
ReadCatch the drift now

Same starting cash, but burn is creeping above plan and the clock is shortening. Nothing's on fire yet — which is exactly when it's cheapest to fix. Find what drifted and pull it back before it compounds.

Widening

5 mo

Monthly net burn$120K → $220K
Trend vs. planOff plan, accelerating
Cash on hand$1.2M
Survival~5 mo, dropping fast
ReadDanger — find the variance, cut

The P&L going negative by larger and larger amounts every month — the warning sign. The level was fine a quarter ago; the direction is the emergency. Find where costs broke from plan and tighten the belt now.

Benchmarks

A burn rate isn't measured in dollars. It's measured in time.

There's no universal dollar benchmark for burn — $80K a month is fine for one company and fatal for another. The rate is only healthy or dangerous relative to the cash behind it. So divide your cash on hand by your monthly burn, read the answer in months of survival, and judge it against these bands. (A dedicated Runway guide on managing that clock is coming soon.)

Danger Under 6 months

Danger zone. With six months or less of survival, you're already inside the window where a raise or a serious cut has to be underway — these things take longer than you think. If you're here, cash is the only priority until you're out of it: collect what's owed, cut what's drifted, and extend the runway before anything else.

Caution 6 — 12 months

Caution. Workable, but not a lot of slack — close enough to the edge that a bad quarter or a surprise expense could push you into the danger zone fast. Fine if the trajectory is flat or improving; worth acting on if burn is creeping the wrong way.

Healthy 12 — 18 months

Healthy. A year or more of survival gives you room to operate from strength — to raise on your terms or not at all, to absorb a surprise without panic, to make decisions on a strategic clock rather than a desperate one. This is the band you want to be defending.

Strong Over 18 months / profitable

Strong — and if you're profitable, effectively unlimited. Net burn at or below zero means the clock isn't running at all; you're funding your own survival. Even here, keep the ritual: know your gross burn and hold a rainy-day cushion, because the unforeseen expense always arrives eventually.

When burn is heading the wrong way

Three plays that actually move it.

When the burn is climbing, the order matters: understand the leak before you cut, pull the free cash lever first, then tighten deliberately. Cutting blind is how you damage the business while fixing the spreadsheet.

— 01 Find the variance from plan

The number isn't the problem — the drift is.

Before touching anything, compare actual burn to your financial plan and find where they diverged. A burn rate climbing isn't a single fact — it's a set of line items that broke from what you budgeted: a hire that landed early, a tool that crept, an infrastructure bill that scaled past its plan. Identify exactly where the costs got out of whack, because that's where the cut belongs. You can't fix a total; you fix the lines underneath it.

— 02 Collect before you cut

The fastest cash is the cash already owed to you.

Pull the free lever first. Run the ARR and find the customers who are late or past due, and go collect. Overdue invoices are survival months sitting in someone else's bank account — bringing them in extends your runway immediately, with no damage to the business and nothing lost but a few phone calls. Do this before you start cutting, because it buys you the time to cut thoughtfully instead of in a panic.

— 03 Tighten the belt, keep the cushion

Cut the drift, hold the rainy-day fund.

Now tighten — but deliberately, against the variance you found, not across the board in a fright. Cut what drifted from plan and isn't producing, and protect what is. And whatever you do, don't run the cushion to zero: every company eventually meets the unforeseen tax bill or the surprise compliance project, and a rainy-day fund is what turns those from crises into line items. Deliberate burn, with a buffer, beats a heroic sprint to empty.

Common mistakes operators make with Burn Rate.

Watching the level instead of the trajectory.

The big one. A high burn isn't inherently dangerous — a well-funded company can burn a lot and be perfectly fine. What's dangerous is a loss that widens every month, the P&L going negative by larger and larger amounts. That trajectory is the early warning, and it shows up long before the absolute number looks alarming. Watch the direction across several months, not the single snapshot, and you'll see trouble while it's still cheap to fix.

Not knowing whether you're quoting gross or net.

Gross burn is what you spend; net burn is spend minus revenue. They can be wildly different for a company with real revenue, and the trouble starts when you quietly switch between them — quoting the flattering net number to the board and the scary gross number to yourself, or vice versa. Pick one to manage to, write down which, and stay consistent. I managed to gross because it's conservative; what matters most is that you don't move the goalposts.

Assuming profitability means you can stop watching cash.

Profitable doesn't mean immune. Every company needs a rainy-day fund, because the unforeseen always arrives — a GDPR implementation, a surprise tax bill, something that breaks and has to be fixed now. If you've stopped tracking your burn and your cushion because the P&L looks healthy, an ordinary surprise can still become an emergency. Keep the ritual no matter how good things look.

Reaching for cuts before collecting what you're owed.

When cash gets tight, the instinct is to start slashing — but the fastest, cheapest lever is usually the receivables you haven't collected. Past-due invoices are runway sitting in a customer's account. Chase that money in first; it extends survival immediately and damages nothing. Cutting is slower, more painful, and easier to get wrong. Collect first, then cut deliberately if you still need to.

Checking it too rarely to catch the trend.

Burn is a monthly number at a minimum, and a weekly one when cash is tight. Check it quarterly and you'll discover a widening burn a full quarter after it started — which is a quarter of survival you can't get back. The ritual only works if it's frequent enough to catch the trajectory early. Once a month, every month, set the cash against the burn and know your survival number cold.

Cutting across the board instead of against the plan.

When burn climbs, a blanket cut feels decisive but it's lazy and it hurts the wrong things. The disciplined move is to compare actuals to your financial plan, find the specific lines that drifted, and cut there — leaving the spend that's actually producing intact. A panic cut damages the business to fix the spreadsheet; a targeted cut fixes the spreadsheet and leaves the business stronger.

Read alongside

Burn Rate is how fast. Burn Multiple is whether it's worth it.

Burn Rate tells you the raw speed the tank is draining. Burn Multiple asks whether that burn is actually buying growth — burn per dollar of new ARR. A controlled burn that isn't producing revenue is its own kind of problem, and the multiple is where it shows up.

Burn Multiple guide →

How Upbeat helps

The cash trajectory, caught monthly instead of discovered quarterly.

The whole value of burn rate is catching the trend early — which a quarterly board deck can't do. Upbeat keeps burn, cash on hand, and the survival months they imply on your scorecard, tracked month over month, so a creeping burn shows up as a creeping line and not a nasty surprise. The ritual that lived in one founder's head for sixteen years, made visible to the whole leadership team — every month, automatically.

See how it works → See pricing

Related metrics

The rate, the clock, and whether the burn is worth it.

Watch the trajectory, not just the number.

Upbeat keeps your burn, cash on hand, and survival months on the scorecard month over month — so a creeping burn shows up as a line you can see, and the cash ritual that lived in one founder's head becomes something your whole team watches together.

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