Fourteen Months of Runway

San Francisco · May 11, 2026

The CFO sends the cash update every Monday at 6 a.m. I don't know if she's up early or if she schedules it. Either way, it's the first thing I see when I open my phone, before the alarm, before the coffee, before anything else. A single email with a single number in the subject line.

This week: $7.2M.

Our monthly burn is $510K. If nothing changes — no new revenue, no fundraise, no miracle — we have fourteen months before the money runs out. Fourteen months sounds like a lot until you remember that a Series D raise takes four to six months, due diligence included, and our board wants us at $5M ARR before we go out. We're at $3.8M.

That means I have roughly eight months to add $1.2 million in annual recurring revenue, or we start the fundraise from a position of weakness. And raising from weakness in this market — I've seen what that looks like. You give up a third of the company for money that doesn't solve the problem, just delays it.

This is what it's actually like to run growth at a company that's burning cash. Not the version you read about in blog posts, where everything is an "exciting challenge" and the founder talks about "velocity." The real version, where you lie awake at 1 a.m. doing arithmetic in your head and wondering if the ad spend you approved yesterday was an investment or a waste.

The burn wasn't always this bad. A year ago we were at $420K/month. Then we hired four engineers to build the enterprise tier (necessary), brought on a demand gen manager and two SDRs (my ask — a team we'd eventually cut entirely), and moved to a bigger office (the CEO's decision, and one I quietly disagreed with). Suddenly we're at $510K and the revenue hasn't caught up.

"We're investing in growth," the CEO says in the board meeting. She's not wrong. But there's a thin line between investing in growth and spending money you don't have on outcomes you can't guarantee, and I'm not always sure which side of that line we're on.

The board member who worries me most — a partner at the fund that led our Series C — asks the question I've been dreading: "What's your CAC payback period?"

I answer because this is my number. "Fourteen months for direct sales. Twenty-two months for channel partnerships. Blended: sixteen."

"And your runway is?"

"Fourteen months."

He doesn't say anything. He just writes something in his notebook. But the math is obvious to everyone in the room: our CAC payback period is longer than our runway. We're paying to acquire customers whose unit economics don't turn positive before the money runs out.

Our CAC payback period is longer than our runway. We're paying to acquire customers whose unit economics don't turn positive before the money runs out.

I take my team — six people, the largest growth team I've ever managed — to a conference room at a coworking space because our office conference rooms have glass walls and I don't want anyone to see what's on the whiteboard.

What's on the whiteboard is a list of everything we spend money on, ranked by CAC payback period:

Google Ads: $68K/month. CAC payback: 11 months. Our best channel by unit economics, but we've hit a ceiling. We've been at $68K for three months and increasing spend just drives up CPC without proportional conversion gains. The market is saturated.

LinkedIn Ads: $31K/month. CAC payback: 19 months. This is the one that hurts. LinkedIn is where our buyers live. The targeting is precise. The leads are qualified. But the cost per click is $14.70 and rising, and the conversion rate from click to demo is 1.8%. The math doesn't work at scale.

Content + SEO: $22K/month (including one full-time writer and freelancers). CAC payback: 8 months — but only for the organic traffic that converts, which is a small fraction. The rest is brand building, and brand building doesn't have a payback period you can put in a spreadsheet.

SDR team: $34K/month (two reps, fully loaded). CAC payback: 23 months. The SDRs are good. They book demos. But the conversion rate from cold outbound to closed deal is 0.4%, and each deal takes 67 days to close on average. By the time the revenue hits, we've burned through the cash twice over.

Events and sponsorships: $15K/month. CAC payback: unknown. I genuinely don't know if events work. We get leads, we scan badges, we follow up. Some of them convert. But the attribution is so messy that I can't tell you whether SaaStr Annual generated $200K in pipeline or $20K.

"We need to cut," I say. "I know nobody wants to hear that. But we need to cut the things that aren't working and double down on the things that are."

My demand gen manager, a woman named Sonia who joined four months ago from HubSpot, looks at me. "What's the target?"

"We need to get burn under $440K by April. That gives us eighteen months of runway instead of fourteen. And we need CAC payback under twelve months, blended."

"That's a $70K monthly reduction," she says. "That's basically LinkedIn and events."

"I know."

We cut LinkedIn Ads to $8K/month — enough to run retargeting campaigns against known accounts, not enough for broad prospecting. We eliminated all event sponsorships except one (a niche SaaS conference where we'd historically seen 3x ROI). We paused one SDR and redeployed her to manage inbound leads, which had been handled by the account exec who was already overloaded.

Total savings: $62K/month. Not quite the $70K target, but close.

The hardest part was telling Sonia that the LinkedIn budget she'd been hired to manage was being cut by 74%. She took it well — better than I would have. "I'll make $8K work harder than $31K ever did," she said. And she did, actually. The retargeting campaigns she built converted at 4.2%, more than double the broad targeting rate.

The SDR we reassigned to inbound — a guy named Jaylen who'd been doing cold outbound for six months with grim results — turned out to be exceptional at inbound qualification. His speed-to-lead time was under four minutes. His demo booking rate was 68%. He'd been in the wrong role the entire time.

He'd been in the wrong role the entire time. We'd spent six months measuring his cold outbound conversion rate when his actual superpower was inbound speed.

Two months after the cuts. The numbers:

Monthly burn: $448K. Down from $510K. Not at the $440K target, but getting there. The office lease is a fixed cost I can't do anything about.

New MRR added in March: $127K. Up from $89K in January. The improvement is almost entirely from two changes: better inbound response time (Jaylen) and a new pricing experiment where we offer annual billing at a 20% discount upfront, which improves our cash position even though it reduces per-month revenue. (For what happened when we tried a bigger pricing change, see We Changed Our Pricing and Almost Died.)

CAC payback, blended: 13.2 months. Down from 16. Still above target, but the trajectory is right.

Cash in the bank: $6.3M.

Runway: 14.1 months. We've barely moved the runway number, because the burn reduction was partially offset by a big infrastructure bill (the database migration that product had been putting off). But the unit economics are better, which means every new dollar of revenue is more efficient than the last.

The CEO asks me for a projection. "If the current trajectory holds, when do we hit $5M ARR?"

I run the model three ways: conservative (current growth rate), base case (10% monthly acceleration), and optimistic (enterprise deals close on time). Conservative: November 2026. Base case: September. Optimistic: August.

"What do you believe?" she asks.

"Base case. September. But enterprise deals never close on time."

She nods. "Start talking to the board about the raise in June. Let them socialize it with the fund."

The Monday email arrives. $6.1M. Fourteen months of runway. We've been at fourteen months for three months now — the burn reductions and the revenue increases are offsetting each other, like running on a treadmill.

But here's what's different: the composition of the number has changed. Three months ago, $7.2M at $510K burn. Now, $6.1M at $448K burn with better unit economics and a faster growth rate. The same runway, but higher quality. The kind of fourteen months where you're building a business, not just delaying an outcome.

I think about Corral sometimes. My old company, the one that died. We had eighteen months of runway when we started getting nervous, and we burned through it in eleven because the panic led to bad decisions — a pivot nobody believed in, a sales hire we couldn't afford, a marketing blitz that targeted the wrong audience. We didn't run out of money. We ran out of conviction.

I don't want to make those mistakes again. So every Monday morning, before the coffee, before the alarm, before anything else, I look at the number. I do the math. And I remind myself that the goal isn't to have more runway. The goal is to not need it.

We're not there yet. But the line is bending.

$6.1M. Fourteen months. I'll take it.