Insero Buys Cause + Effect to Sell AI Through CFOs

Insero Advisors bought Rochester data firm Cause + Effect Strategy in late August, adding 33 AI staff to a 160-person accounting platform. Rallyday Partners, the Denver owner that funded Insero in 2025, announced the close on September 8, 2026. The buy puts analytics on the desks of more than 750 Insero clients, the channel Cause + Effect could not fund on its own.

John Loury, president of Cause + Effect, said a strong year followed by two new hires could cut EBIDA by 30 percent. Nancy Catarisano, Insero’s CEO, said there is not a company in her book that could not use the work. That is the wager: the accountant already has the CFO, and the AI shop needed a balance sheet that could absorb headcount.

THE DEAL IN FOUR FIGURES

• Staff added: Cause + Effect brings 33 people onto an Insero roster of about 160 in 14 states.
• Client door: Insero lists more than 750 commercial firms, nonprofits, government bodies, and private clients.
• Growth rank: Cause + Effect said it placed No. 90 in AI and 2,450 overall on the 2026 Inc. 5000 list.
• Close: The firms say the deal closed in late August 2026 and went public on September 8.

Rallyday CEO Ryan Heckman said Insero acquired a data and AI firm because “data/AI has emerged as an important service for companies of all sizes.” He also said the firm was “beyond excited to be welcoming John, Mike and their team to the Insero platform.”

Insero Puts an AI Shop on Its Accounting Platform

Cause + Effect, founded in Rochester in 2015, sells data architecture, engineering, analytics, and AI as one stack. Insero has been in the city for more than 50 years and now runs an alternative practice structure: Insero & Co. CPAs, LLP handles attest work, and Insero Advisors, LLC handles tax and other non-attest work. The AI team sits on the advisory side, next to the people who already see a client’s books.

Catarisano put the product in finance language, not lab language. “Cause + Effect’s expertise, combined with Insero’s finance and accounting capabilities, allows us to deliver a deeper, more effective view of how a business is doing, identify opportunities for improvement and then execute on the vision with our clients,” she said.

Loury, who co-founded the shop with Michael Sutton, now vice president of client service and solutions, said the fit was the work Insero already wanted: a team that could sell the job and then do the job. “Joining Insero gives us the opportunity to pair our capabilities with deep finance, accounting, and advisory expertise,” he said.

Why Two New Hires Could Cut Profit 30 Percent?

Cause + Effect was not shopping itself. Loury said a sale was not in the growth plan until the talks made the math obvious. A boutique that builds systems and models lives on people. People are the cost that shows up before the next year’s revenue does.

We always felt very confident in what we bring to the market services-wise, but for us to invest in people and technology, that’s difficult. (If) we have a fantastic year and we add two bodies, that could reduce our EBIDA by 30 percent. That’s not a recipe to truly scale.

John Loury, President, Cause + Effect Strategy

That 30 percent line is why a 33-person shop takes PE money even when the culture still sounds local. In 2023 the firm said it had raised 2022 sales by 27 percent and grown to 21 people after adding six. The book got bigger. The hiring problem got bigger with it.

Catarisano had already told Rallyday she wanted a team with “great customer success and also the technical prowess to do the work ourselves,” Loury said. Insero gets a product its CFOs keep asking for. Cause + Effect gets a payroll it can grow without lighting a third of earnings on fire.

DeMott, Actel, Then a Data Firm

Rallyday’s January 2025 growth investment came with a written plan to add service lines and to partner with other accounting and advisory shops. Catarisano said then that the capital would help Insero “lead the reinvention of the public accounting and consulting industries at a national level.” Cause + Effect is the third buy on that script, not a one-off crush.

THE THREE ADD-ONS SINCE RALLYDAY

DeMott and Smith CPAs joined on October 31, 2025, when Insero said it had about 150 people in Rochester and Ithaca. The 1988 firm brought tax capacity and two new partners, Jason DeLaurentiis and Ben Dobrzynski. It was a classic scale deal: more returns, same city.

Actel, founded in 1989, was a different animal. Catarisano said private equity buyers “need diligence partners who can validate an investment thesis from multiple angles.” Actel’s voice-of-customer work, market maps, and competitive scores sit next to Insero’s financial due diligence. The May 18, 2026 release said Insero then had about 160 people. Eleven Actel staff came across.

THE RALLYDAY CLOCK

1. January 7, 2025: Rallyday funds Nimble Gravity, a Denver AI, data, and software consultancy.
2. January 14, 2025: Rallyday funds Insero and splits attest work from advisory under the new structure.
3. October 31, 2025: DeMott & Smith CPAs join Insero.
4. November 4, 2025: Padraic McConville, a Rochester native, is named a Rallyday partner.
5. May 18, 2026: Insero buys Actel Advisory Group.
6. Late August 2026: Insero closes on Cause + Effect Strategy.

Seven days separate the Nimble Gravity check and the Insero check. One path is a standalone AI consultancy. The other is an accounting platform that can bolt AI onto a CFO relationship. Cause + Effect is the second path showing up in Rochester.

CFOs Now Own the Analytics Brief

Loury’s most common contact inside a client is the chief financial officer. “More and more CFOs are owning data and analytics; it’s not just an IT thing anymore because of the potential impact on the business itself,” he said. That shift is the distribution math. Insero already sits in the monthly close. Cause + Effect no longer has to win a new executive sponsor for every job.

Everyone knows they need to have some sort of strategy around AI, but they don’t take it the way Cause + Effect has.

Nancy Catarisano, CEO, Insero Advisors

Catarisano was blunter about her own roster. “There isn’t a company in my client base that couldn’t use their service,” she said. The 750-plus book runs from family firms to multinationals, plus nonprofits and public bodies. Those clients already pay Insero for tax, audit, and advice. The new SKU is a model, a warehouse, a dashboard, and a person who can tell a CFO what to do with it.

The hometown overlay is real and secondary. Catarisano gave McConville his first job reference. About two decades later he came back with Rallyday, which she said found her because Insero kept showing up on best-place-to-work lists. Loury called it a small world and “an advantageous combination for accelerating growth.” The PE partner did not linger on that story.

Private Equity Turns One Deal Into 7.3

Padraic McConville’s own post on September 8 framed Insero as “our accounting platform” and Cause + Effect as “a provider of data & ai services.” That is roll-up language. It is also how this deal reads against the rest of the profession.

🎉 big congrats to our friends at Insero and Cause + Effect.

Insero Advisors, our accounting platform, acquired C+E, a provider of data & ai services: https://t.co/wqqjw67Mph

— Padraic McConville (@PadraicMcC) September 8, 2026

The International Federation of Accountants counted 177 direct private equity investments in accounting firms from 2015 through 2025, which then led to 875 roll-up buys, or 1,052 firms touched in all. In 2025, IFAC said each of those direct checks produced 7.3 additional transactions per direct deal. By mid-2026 it put the running tally at some 200 direct investments and nearly 1,200 follow-on deals.

HOW THE ACCOUNTING ROLL-UP NOW LOOKS

• Direct buys, 2015-2025: 177 PE investments in accountancy firms, per IFAC.
• Follow-ons in that decade: 875 roll-up acquisitions, for 1,052 firms touched.
• 2025 ratio: 7.3 extra deals for each new platform check.
• U.S. large firms: KPMG Corporate Finance put PE money above $50 billion over six years, with 11 of the 30 largest U.S. firms carrying it by the third quarter of 2025.

Insero is not Crowe or Eide Bailly. It is a lower-middle-market version of the same machine: buy the CPA core, add diligence, add data, keep the local names on the door. Catarisano said Rallyday “cared about your culture” and has “been true for the whole year and a half.” She also said you cannot “just grow to grow.” The sequence still looks like a platform: tax bench, then market intel, then AI.

Rallyday is running a parallel AI bet in Denver. Nimble Gravity, funded on January 7, 2025, sells data and model work to boards and C-suites and later bought Fog Solutions, adding about 50 people to a global headcount near 250. Insero’s path is narrower and stickier. The buyer is the client’s accountant.

Rochester Talent Has a New Place to Land

Loury wants the 33-person team to grow, and he wants that growth in Rochester. “We are very excited for what that could mean for data/AI-related positions here in Rochester,” he said. “We graduate a ton of young talent here, so hopefully being able to retain some of that talent is definitely a goal that we have.”

That is the local return on a Denver check. If Insero actually sells Cause + Effect into hundreds of CFO relationships, the shop has to hire. If the 30 percent math still holds without PE, those jobs do not get posted. The open question is not whether Rochester likes the story. It is whether 750 clients buy the work fast enough to fund the next cohort.

Heckman already wrote the national version of that test. Data and AI, he said, are now a service for companies of all sizes. Insero just bought the team that is supposed to prove it from the audit folder out.

Frequently Asked Questions

Who Founded Cause + Effect Strategy?

John Loury and Michael Sutton co-founded the firm in Rochester in 2015. Sutton is vice president of client service and solutions. Loury has said the shop’s most common buyer inside a company is the CFO, and he has described an internal proposal agent named Roz that drafts custom pitches so the team can move faster without a drop in quality.

How Does Insero Split Audit Work From Advisory After Taking Private Equity?

After the January 14, 2025 Rallyday close, Insero adopted an alternative practice structure required for PE-backed CPA firms. Insero & Co. CPAs, LLP, a licensed CPA firm, keeps attest and audit work. Insero Advisors, LLC houses tax, business advice, and other non-attest services, which is where Cause + Effect now sits. Partners still present one client team.

What Clients Had Cause + Effect Already Served?

A 2023 note from the firm named Monro Inc., GitLab, Echo USA, NBC Sports, Delta Sonic, Isaac Heating & Air Conditioning, The Strong National Museum of Play, and the University of Rochester among completed jobs. That list is older than the Insero deal and sits beside Insero’s own mix of family firms, multinationals, nonprofits, and public bodies.

What Is Rallyday Partners?

Rallyday Partners is a Denver private equity firm that describes itself as “by founders, for founders” and lists more than $350 million under management. It funded Nimble Gravity on January 7, 2025 and Insero a week later. Padraic McConville, who grew up in the Rochester area and later became a Rallyday partner on November 4, 2025, led the Insero relationship. Co-founder Ryan Heckman is named as Rallyday’s CEO on the Cause + Effect release.

How Does the Inc. 5000 Rank a Firm Like Cause + Effect?

The 2026 Inc. 5000 ranks U.S. private companies on percentage revenue growth from 2022 to 2025. A company had to be in business and booking sales by March 31, 2022, stay independent through December 31, 2025, clear $100,000 of 2022 revenue and $2 million of 2025 revenue, and remain for-profit. Cause + Effect said it placed No. 90 among AI firms and 2,450 overall on that list. The median three-year growth rate across the 5,000 names was 130 percent.