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# Ambrook Raises $30M Series B Led by Lachy Groom as It Expands Beyond Farming
- URL: https://www.theinvestorsociety.com/ambrook-raises-30m-series-b-led-by-lachy-groom-as-it-expands-beyond-farming/
- Published: 2026-08-06T17:30:27.000Z
- Updated: 2026-08-06T17:30:27.000Z
- Author: The Editor
- Tags: Western Hemisphere

Ambrook, a financial software company built for small businesses in agriculture and other physical industries, has raised a US$30 million Series B led by Lachy Groom, bringing total funding to US$59 million. Thomson Reuters Ventures, Thrive Capital, Field Ventures, and Cameron Ventures also participated, along with angel investors including Notion co-founder Akshay Kothari, Gusto co-founder Tomer London, and Vercel CEO Guillermo Rauch. Founded in 2020 and headquartered in New York with offices in San Francisco and Denver, the company was started by CEO Mackenzie Burnett, who previously co-founded a startup acquired by CoreOS, alongside Dan Schlosser, a former product manager at Google and The New York Times, and Jeff Anders, a former Meta designer who led design at Scale AI.

Ambrook combines bookkeeping, expense management, bill payment, cash management, and tax record-keeping in a single platform, using AI to scan and itemize receipts, draft bills from forwarded emails, and suggest transaction categories, while mapping expenses automatically to Schedule F and Schedule C tax categories. It shows profitability in the units operators actually use, bushels for farms and miles for trucking companies. The customer base grew from roughly 2,500 in July 2025 to more than 8,000 businesses across all 50 states, including over 1,000 trucking companies and hundreds of contractors and property managers. About half of those customers are digitizing their finances for the first time, and nearly a third use the platform only through its mobile app. "Really big, multi-million dollar businesses run on paper in America still," Burnett said. The funding will go toward expanding into mid-market agriculture, building payroll and operations features, and hiring customer success staff.

## Market Context

Ambrook is entering a category with an entrenched incumbent: QuickBooks holds roughly 82% of the small business accounting software market, with all competitors combined accounting for under 16%. The company's argument is that general-purpose bookkeeping tools do not handle the specifics of these industries, from commodity units and equipment depreciation to the tax schedules that farms and owner-operators actually file. Lachy Groom framed the thesis as a coverage gap, saying millions of essential businesses across local economies remain offline because existing software does not fit their needs.

The timing is complicated by conditions in Ambrook's founding market. USDA projects farm sector debt at US$624.7 billion in 2026, up US$30.8 billion from the prior year, with interest expenses reaching a record US$33 billion, roughly US$90 million a day. Chapter 12 farm bankruptcies rose 46% in 2025 to 315 filings, the highest since 2020, concentrated in the Midwest and Southeast. Net farm income is forecast at US$153.4 billion, but government payments account for nearly 29% of that total; without them the figure would fall to US$109.1 billion. That environment cuts both ways for Ambrook: financial pressure makes visibility into unit economics more valuable, and also makes new software spending harder to justify.

## The Signal

> "Really big, multi-million dollar businesses run on paper in America still." — Mackenzie Burnett, co-founder and CEO, Ambrook

## Regional Relevance

**For the United States:** Ambrook is selling into the parts of the American economy that produce food, move freight, and build structures, sectors where owner-operators frequently run multi-million dollar businesses on paper ledgers and spreadsheets. That half its customers are digitizing finances for the first time is a measure of how far the software industry's attention has skewed toward knowledge work. Thomson Reuters Ventures' participation signals that established tax and accounting incumbents see the vertical opportunity as real, and the company's Denver and New York offices reflect a customer base spread across all 50 states rather than concentrated in coastal metros.

**For American agriculture specifically:** Farms are operating under the tightest financial conditions in years, with record debt, record interest costs, rising bankruptcies, and income propped up substantially by federal payments. In that context, tools that show cost per bushel or per acre in real time address a concrete problem: many operations cannot say which enterprises within the farm are profitable until the accountant closes the books months later. Whether producers under this much pressure will adopt and pay for new software, however, is a different question from whether they need it.

## The Other Side

**Can a vertical player displace an incumbent with 82% of the market?** QuickBooks' dominance rests partly on the accountants and bookkeepers who already know it, and switching costs in accounting software are notoriously high because historical records, tax filings, and advisor workflows all sit inside the existing system; Ambrook's 8,000 customers are meaningful growth but remain small against that installed base.

**Does expanding into three new industries at once dilute the advantage?** Ambrook's credibility came from understanding agriculture deeply enough to map expenses to Schedule F and report profitability per bushel; trucking, construction, and property management each have distinct cost structures, regulatory requirements, and billing conventions, and building genuine depth in all of them simultaneously is what has historically caused vertical software companies to lose the specificity that made them worth switching to.

**Is a distressed farm economy the right base to grow from?** With farm bankruptcies up 46%, debt at a record US$624.7 billion, and nearly 29% of sector income coming from government payments, Ambrook's core customers face real solvency pressure; software that demonstrably recovers cost is defensible in a downturn, but subscription budgets are among the first line items scrutinized when operating loans tighten.

## Sources & Transparency

- [Upstarts Media — Startup Ambrook, QuickBooks Killer For Farms, Raises $30M Series B](https://www.upstartsmedia.com/p/ambrook-raises-30m-series-b-real-economy?ref=theinvestorsociety.com)
- [Morning Ag Clips — Ambrook Raises $30M Series B to Expand AI Financial Management Platform for America's Independent Businesses](https://www.morningagclips.com/ambrook-raises-30m-series-b-to-expand-ai-financial-management-platform-for-americas-independent-businesses/?ref=theinvestorsociety.com)
- [Ambrook — Ambrook raised a $30M Series B](https://ambrook.com/series-b?ref=theinvestorsociety.com)
- [EBC Financial Group — US Farm Debt Heads to a Record $625 Billion. Bankruptcies Up 46%](https://www.ebc.com/forex/us-farm-debt-bankruptcies-2026?ref=theinvestorsociety.com)
- [6sense — QuickBooks Market Share, Competitor Insights in Small Business Accounting](https://6sense.com/tech/small-business-accounting/quickbooks-market-share?ref=theinvestorsociety.com)
- [American Farm Bureau Federation — Farm Bankruptcies Continued to Climb in 2025](https://www.fb.org/market-intel/farm-bankruptcies-continued-to-climb-in-2025?ref=theinvestorsociety.com)