Nov 15, 2017 · 26m · top-founders
844: SaaS: How Ignoring CAC Works for ~$100m ARR Expensify
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gold bands on the timeline = statements, start to end. Hover to read, click to jump. CC turns on captions
Expensify founder and CEO David Barrett joins Nathan Latka to discuss how the company approached $100 million in annual recurring revenue with high profitability using a bottom-up viral distribution model, disciplined capital efficiency, and a contrarian approach to SaaS metrics.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. Nathan holds 42.5% of the talking time here. How this is scored →
Nathan as informed peer 4.6 Guest teaching 4.8 Guest disagreement 3.8 Nathan pushing back 3.6
speaking balance: gold is Nathan, purple is the guest (3 minute bins)
Sharpest disagreement ▶ 19:41 Refusal of the CAC construct
David forcefully dismisses standard VC CAC accounting, telling founders to refuse to get trapped in dynamics that cause people to evaluate their business incorrectly.
Hardest push from Nathan ▶ 8:26 Nathan demands ARR lower boundNathan refuses to accept David's broad 'under 100M' ARR answer, repeatedly demanding a concrete bottom range to keep the conversation focused.
Biggest teaching moment ▶ 19:33 Cost of sales versus customer acquisition costDavid breaks down the mathematical flaw in amortizing operational overhead or engineering expenses into CAC when acquiring customers organically.
Nathan holds their own ▶ 20:36 Nathan challenges non-quantified decision makingNathan counters David's server analogy by demonstrating how infrastructure upgrades directly lift conversion rates, challenging David on how capital allocation is justified without quantification.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | Nathan as informed peer | Guest teaching | Guest disagreement | Nathan pushing back | Why |
|---|---|---|---|---|---|---|
| David Barrett's Career and Expensify's Accidental Origin | 3 | 2 | 2 | 2 | Nathan introduces David's background and prompts him on the founding story. David explains how a plan to give prepaid cards to homeless people in the Tenderloin became a Trojan horse for expense reporting. | |
| Expensify Scale, Transparent Pricing, and Revenue Boundaries | 6 | 5 | 6 | 7 | Nathan repeatedly drills David to establish a lower bound on Expensify's ARR under $100M, but David flatly refuses to be pinned down. David also corrects Nathan's assumptions about enterprise pricing tiers, clarifying it is a flat $9 per active user. | |
| Compounding Revenue Growth and Long-Term Cohort Expansion | 5 | 7 | 4 | 4 | David explains that expansion revenue comes entirely from active user growth rather than upsold tiers, citing 500% cohort expansion over three years. He pushes back on the conventional obsession with predictability, arguing that achieving real profitability is far more important. | |
| Bottom-Up Go-to-Market Strategy and Virality Mechanics | 6 | 6 | 3 | 3 | David outlines Expensify's bottom-up go-to-market strategy targeting individual employees rather than CFOs, as well as the backend architecture required. Nathan compares the onboarding viral loop to Facebook's metrics, which David playfully dismisses as likely bullshit. | |
| High-Impact Brand Marketing and Expensacon in Bora Bora | 4 | 5 | 3 | 2 | David details Expensify's conference strategy, highlighting Expensacon in Bora Bora for 100 industry leaders. He explains that because they do not rely on direct lead ROI, they can outspend competitors to secure long-term brand loyalty. | |
| Rethinking Customer Acquisition Cost in Product-Led SaaS | 7 | 8 | 8 | 8 | A heated conceptual clash where Nathan demands a fully loaded CAC calculation and argues server and support costs drive conversions. David forcefully rejects the premise, differentiating cost of sales from CAC and warning founders against falling into VC metric traps. | |
| Independence Mindset and Portland Headquarters Walkthrough | 3 | 3 | 2 | 2 | David instantly turns down a hypothetical $300M acquisition offer, citing company momentum and profitability, before showing off Expensify's new Portland headquarters on video. The segment also contains Nathan's mid-roll acquisition sponsorship read. | |
| The Famous Five Rapid-Fire Questions | 3 | 2 | 2 | 1 | Nathan runs through the Famous Five rapid-fire questions, and David concludes with advice that it is possible for everyone else around you to be wrong while you are right. |
Statements from this episode (23)
Barrett: Great businesses originate from overlooked spaces
“I think like most great businesses, you sort of fall into something that everyone else has overlooked because if it weren't overlooked, it wouldn't be a great business. It would just be the thing that everyone else does.”
Barrett: Expensify launched the first mobile expense app
“We brought the very first mobile app to expense reports.”
Barrett: Expensify began as a Trojan horse to help homeless people
“And so I actually had no intention of building the expense reporting system. It was just my Trojan horse To let me build this card so I could give money to the homeless safely.”
Barrett: Expensify does not intend to raise more capital and is profitable
“No, no, we haven't raised, we don't intend to raise anymore, I would say we're, you know, profitable, we're growing, and so we just.”
Barrett: Expensify has 42,000 paying business customers
“We have 42,000 customers, whatever, but that ranges everything from like fortune 500 on down.”
Barrett: Expensify has roughly five million total users
“So we've got about five million users total and then some subset of those pay for 40,000.”
Barrett: User counts and conversion rates are vanity metrics compared to revenue
“Cause I would say like, I think about month, like revenue, obviously in month and month annual growth, but I would say all, everything else is just a vanity metric. Number of users you have, number of customers you have conversion numbers, all those kinds, lik…”
Barrett: Expensify ARR is under $100 million
“We don't really share that, but I would say we're still under a hundred.”
Barrett: Expensify is growing just under 100% year-over-year
“So we're doing just under a hundred percent year on year still, which gets tough at the scale, but the nice thing is actually we've in this past year, we've actually made a bunch of product changes that have caused growth to sort of re-accelerate”
Barrett: Vast majority of Expensify revenue is $9 per active user
“Most companies, the vast majority of revenue is on nine dollars per active user. And that's it. And there's no integration fees. There's no upgrade fees. There's no any of that.”
Barrett: Expensify has over 100% net revenue retention across all cohorts
“The important one is revenue retention and we're way over a hundred percent revenue retention. And so I'd say like every every year customers pay us more on aggregate than they did the year before. And so every cohort we've ever acquired pays us more today tha…”
Barrett: Expensify customer cohorts pay about 500% more after three years
“After three years, they pay us about 500% more.”
Barrett: Achieving actual profitability matters far more than predicting it
“Predictability is not nearly as important as people make it out to seem, because, like, predictability is always good until suddenly something changes and it's no longer predictable. You're fooling yourself if you think you know the future. I think it's much b…”
Barrett: Routing around decision makers is Expensify's core driver of success
“Routing around the decision maker has been our entire business model and is why we succeed.”
Barrett: Expensify's tech stack resembles consumer social more than Concur
“We've built in a tremendous technology stack. That's much more like Twitter or Facebook than it is like concur or something else.”
Barrett: Facebook's famous 7-friends onboarding metric is likely bullshit
“Honestly I suspect Facebook's number is bullshit anyway.”
Barrett: Expensify does not use any paid marketing channels
“Nothing. We don't have any paid channels.”
Barrett: Expensify outspends competitors on conferences by targeting brand loyalty
“Everyone else cares about the conferences for lead generation, and we don't, and so we can show up big, much bigger than anyone else, because the ROI of the lead's just not our goal. We're just viewing it, we're viewing the value of the conference very differe…”
Barrett: Expensify hosts an all-expenses-paid 100-person retreat in Bora Bora
“It's only a hundred people. It's invite only, and it's in Bora Bora, all expenses paid by us. And so it's basically, it's more like the Davos of accounting, if you will.”
Barrett: Relying only on quantifiable decisions leads to startup failure
“I think the most important decisions are generally not quantified. We're not quantifiable. And so I'd say if you're running your business because you can prove with numbers that your decisions are good, you're going to fail because I mean, someone else out the…”