How FERMÀT Unlocked $500K+ in Cash Collections Without Adding Headcount

In 30 days, FERMÀT recovered more than $500,000 in overdue invoices, accelerated collections conversations by 2–3×, and avoided hiring an AR specialist  all by implementing Invoice Butler.
$500K+
Recovered from previously stuck invoices in 1 month
2–3×
faster collections momentum
1–2 week
week implementation
0 new hires
Needed
“Implementation was incredibly easy. And within the first month, we collected about half a million dollars that had been sitting there forever and customers were responding 3x as fast.”
-Evelyn Xue,
VP Finance & Ops, FERMÀT,

About FERMÀT Commerce

FERMÀT is a fast-growing startup reinventing digital commerce.

They recently raised a $45M Series B from investors such as WMG, Greylock, and Bain Capital.  

With a lean finance team and rapid customer expansion, they needed systems that could scale far faster than headcount.

The Challenge: Collections Was a Job That No One Wanted to Do And a Growing Issue

When Evelyn stepped into her role at FERMÀT, she became responsible for everything that wasn’t building or selling software — revenue operations, business operations, finance, accounting, the entire back office.

For a long stretch, collections simply sat lower on the priority list. Not because it wasn’t important, but because it’s the kind of work no one is excited to do and it wasn’t the most pressing issue for the business.

Eight quarters in, however, the numbers made it clear:

collections had turned from a background annoyance into a real business problem.

Evelyn found herself in the classic finance dilemma:

  • Hiring someone full-time to manage collections felt like the wrong use of headcount.
  • Outsourcing was unlikely to be effective
  • Managing it herself meant trading away time that had far more leverage elsewhere.

So the work happened sporadically, whenever someone had a spare hour to chase old invoices. Meanwhile, receivables kept growing quietly in the background.

“Collections is annoying and emotionally taxing. Nobody really wants to do this job.”

Why AI Was the Perfect Fit for AR

Evelyn is deeply skeptical of AI in finance — for good reason.
“For accounting, wrong numbers are fatal. You can’t blame the model in a board meeting.”

But AR is not accounting

  • It’s repetitive
  • High-volume
  • Emotionally draining
  • Requires persistence, not perfection
  • And is exactly the kind of work humans avoid and AI thrives at

AR became the first place where AI wasn’t risky — it was obviously better.

Implementation: Fast, Simple, No Headaches

Most finance tools take weeks to configure and months to trust.

Evelyn expected the same.

Instead, Invoice Butler connected to FERMÀT’s systems and went live in 1–2 weeks with near-zero manual setup.

“I was waiting for the headache… but it never came. It was one of the easiest implementations we’ve ever done.”

The Turning Point: Customers Finally Started Responding

Two weeks in, something unexpected happened:
“Customers who hadn’t responded to our last three emails suddenly replied.”

This wasn’t spam-filter luck or a random uptick.

This was Invoice Butler:

  • referencing exact invoice context
  • pulling contract details
  • inserting dates of previous outreach
  • adjusting tone based on customer sentiment
  • asking the right follow-up questions
  • and doing it instantly, with no fatigue

The system wasn’t sending reminders…. it was restarting stalled relationships.

The Results: $500K+ Recovered and a Scalable Collections System

1. Real Cash in the Door — Fast

FERMÀT collected over $500,000 in the first month from invoices that had been stuck for months.

2. 2–3× Faster Collections Conversations

AI maintained a persistent, contextual cadence no human could match.

3. Humans Only Step In for Real Judgment Calls

Invoice Butler handled everything else:

  • follow-ups
  • vendor portal blockers
  • W-9 and documentation requests
  • clarifications and disputes
  • continuous context-aware replies
“Every email was tailored — even adjusting based on how angry the customer sounded.”

4. No Hiring Needed

The alternative was hiring someone full-time to do this work manually — a job that’s hard to hire for and even harder to retain. The speed

Systems Scale Better Than People

This experience reinforced a core principle for Evelyn:
“Scaling people is harder than scaling systems.”

She wanted a collections capability that:

  • never gets tired
  • never forgets to follow up
  • never loses context
  • never burns out

Invoice Butler delivered exactly that: a collections engine that grows as the company grows.

Evelyn’s Advice to Other Finance Leaders

“Just try it. You have nothing to lose. If you hate it, walk away. If you love it… and we did….you get your time back and your cash back.”

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