TPG Takes Majority Stake in Smith Howard to Scale AI Tax Platform

TPG has acquired a majority stake in Smith Howard, a 50-year-old Atlanta-based CPA and advisory firm, in a deal that signals how aggressively private equity is moving into professional services — and how much weight it's putting on technology as the wedge to consolidate the sector.

The investment, announced June 8, comes from TPG's growth equity platform and values the firm in the mid-nine figures, according to a person familiar with the terms who wasn't authorized to discuss them publicly. Smith Howard didn't disclose the exact stake TPG acquired, but the firm will retain "significant ownership" and day-to-day operational control, the company said in a release.

What makes this deal less typical: Smith Howard isn't just selling into the standard PE-backed accounting roll-up playbook. The firm has spent the past three years building proprietary AI-driven tax software that it's now licensing to other CPA firms — technology TPG believes can turn a regional practice into a platform play.

"We've watched software eat everything from legal to healthcare, but accounting has been stubbornly manual," said David Trujillo, a partner at TPG who led the deal. "Smith Howard is one of the first firms we've seen that's not just adopting tech — they're building it, monetizing it, and using it to win clients the Big Four can't economically serve."

Smith Howard's tech ambitions started in 2023, when the firm launched an internal project to automate the most tedious parts of tax preparation — data extraction from bank statements, transaction categorization, compliance checks. What began as an internal efficiency tool morphed into TaxOS, a cloud-based platform the firm now licenses to other mid-sized accounting practices.

The software uses machine learning to identify deductions, flag audit risks, and generate first-draft returns — cutting prep time by roughly 40%, according to the firm's internal benchmarks. More importantly, it lets accountants focus on advisory work that commands higher fees, rather than keystroke drudgery that clients increasingly expect to be automated.

TaxOS currently has 14 CPA firms as licensees, most of them regional players with 10-50 accountants on staff. Smith Howard charges a per-seat subscription plus a percentage of time saved on returns processed through the platform. The firm expects software revenue to hit $12 million this year — small relative to its $85 million in total revenue, but growing at triple-digit rates.

That's the hook for TPG. The firm sees software revenue as a way to drive margin expansion and justify a higher exit multiple than traditional services businesses command. It's also a wedge into a fragmented market: there are roughly 45,000 CPA firms in the U.S., and the top 100 control less than 30% of total industry revenue, per the AICPA.

Private equity has been circling accounting for years, but the sector has resisted consolidation more stubbornly than, say, dental or veterinary practices. Part of that is regulatory: CPA firm ownership rules vary by state, and many require majority ownership by licensed accountants. Part of it is cultural — accounting partnerships have historically prized autonomy and resisted the kind of operational standardization PE demands.

But those barriers are eroding. Roughly a dozen states have loosened ownership restrictions in the past five years, and the AICPA has endorsed allowing non-CPAs to own stakes in firms, provided licensed accountants retain control over attest services. That's opened the door to a wave of PE-backed roll-ups.

The biggest player is Aprio, a platform backed by Charlesbank Capital Partners that's acquired more than 20 firms since 2017 and now generates north of $500 million in revenue. Citrin Cooperman, backed by MidOcean Partners, has been on a similar tear. And firms like EisnerAmper and CohnReznick have taken growth capital from PE to fund M&A sprees.

Smith Howard had been on the acquisition trail itself — it's bought six smaller CPA firms since 2021 — but operating as a standalone entity with internal capital constrained how fast it could move. TPG's backing gives it a $500 million war chest for deals, according to the person familiar with the terms.

The difference with TPG's bet: it's not just funding inorganic growth. The firm is explicitly underwriting the software story, betting that TaxOS can become the connective tissue for a roll-up that integrates acquired practices faster and more profitably than competitors.

The Big Four — Deloitte, PwC, EY, KPMG — still dominate the Fortune 500, but they've largely retreated from serving companies with less than $500 million in revenue. Compliance costs are too high, billing rates are too low, and the reputational upside is minimal. That's left a vacuum in the middle market that regional firms like Smith Howard are racing to fill.

Traditional accounting firms operate at 20-25% EBITDA margins — respectable for a people-heavy services business, but nowhere near the 40-50% margins that software or tech-enabled services businesses command. TPG's bet is that by layering in TaxOS and other proprietary tools, Smith Howard can push margins toward 35% over the next three years.

The firm is also betting on multiple arbitrage. Pure-play accounting practices typically trade at 6-8x EBITDA. Software businesses trade at 10-15x revenue. A hybrid model — services revenue stabilizing cash flow, software revenue driving growth and margin expansion — could command a blended multiple in the low double digits, TPG believes.

That's the same playbook TPG used with businesses like Influx, a tech-enabled staffing platform the firm sold to Randstad in 2023 at a reported 12x EBITDA multiple. The question is whether it works in a profession as relationship-driven and regulation-bound as accounting.

"Accounting is still a trust business," said Sarah Weinberg, a managing director at consultancy Hinge, which advises professional services firms. "Clients hire people, not platforms. The risk with the PE model is you standardize the service so much that you lose the differentiation that made the firm valuable in the first place."

Smith Howard's leadership insists they're not planning to squeeze costs or offshore labor — two moves that have alienated clients at other PE-backed firms. Instead, they say the software frees up accountants to do higher-value advisory work: tax planning, M&A support, fractional CFO services.

TaxOS doesn't replace accountants — it handles the repetitive work they'd rather not do. Transaction coding, document extraction, Schedule C prep for pass-through entities. The software also flags inconsistencies that might trigger IRS scrutiny, something junior accountants used to catch manually after hours of line-by-line review.

The firm estimates that for a typical small business return, TaxOS cuts prep time from 8-10 hours to 5-6 hours. For complex returns — partnerships, estates, multi-state filings — the time savings are less dramatic, but the error reduction is meaningful. The software caught roughly 1,200 potential compliance issues last tax season that human reviewers missed on first pass, according to Smith Howard's internal audit.

Smith Howard was founded in 1976 by two Georgia Tech grads, Bill Smith and Larry Howard, who met while working at Arthur Andersen's Atlanta office. The firm spent its first three decades as a classic regional CPA practice — audits, tax prep, light advisory work for local manufacturers and real estate developers.

What changed: succession planning. By the early 2010s, the founding partners were nearing retirement, and the firm faced the same existential question most mid-sized partnerships face — sell to a competitor, stay independent and hope the next generation can grow it, or find outside capital.

The firm chose door three, but with a twist. Rather than take growth equity in 2015 (when several PE firms came calling), leadership decided to self-fund an acquisition strategy using partner capital and bank debt. Between 2016 and 2023, Smith Howard acquired six smaller CPA firms across Georgia and the Carolinas, growing from $40 million to $85 million in revenue.

By 2024, though, the math changed. The firm had expansion ambitions that required more capital than partners were willing to commit, and the TaxOS software was consuming internal resources faster than services revenue could fund it. That's when TPG re-entered the conversation.

Smith Howard fielded offers from three PE firms, according to a person involved in the process. TPG won on two factors: willingness to let existing leadership stay in place (some rival bids included management changes), and conviction that the software was the real asset.

"Other firms saw TaxOS as a nice side project," said the person. "TPG saw it as the entire investment thesis. That mattered to the partners who'd spent three years building it."

The U.S. accounting industry generated roughly $180 billion in revenue in 2025, split across 45,000 firms. The Big Four control about 40% of audit revenue but less than 15% of tax and advisory revenue outside the Fortune 1000. That leaves $100 billion+ in a long tail of small and mid-sized firms with limited technology, no national brand, and aging ownership.

Roughly 75% of CPA firm owners are over 50, and succession planning is the top strategic concern, per the AICPA's 2025 practice management survey. That's creating a seller's market for firms with growth stories and a buyer's market for firms with stagnant revenue and no clear next-generation leadership.

Smith Howard plans to acquire 8-12 firms in the next 18 months, focusing on practices with $5-20 million in revenue that serve industries where it already has expertise: construction, healthcare, real estate, and lower-middle-market manufacturing. The goal is to create regional density — multiple offices within driving distance — rather than stitching together a patchwork national footprint.

TPG's capital also funds product development. Smith Howard is building a second software platform, AdvisoryIQ, that uses AI to generate financial projections and scenario models for M&A diligence — a service that's currently manual and billable at $150-200/hour. If successful, it could become another licensable product for other firms.

The risks here are less about the market — demand for accounting services is steady and counter-cyclical — and more about execution. PE-backed accounting roll-ups have a mixed track record, and several have stumbled on culture integration or client retention post-acquisition.

Technology risk is real too. TaxOS works well for straightforward returns, but it's less effective on complex filings where judgment calls matter more than pattern recognition. If the software makes a high-profile mistake that triggers an audit or penalty, it could spook licensees and damage the brand faster than the firm can recover.

There's also the question of whether TPG's three-to-five-year hold period aligns with the time it takes to build software traction. Enterprise sales cycles in professional services are long — it took Smith Howard 18 months to sign its first TaxOS licensee. If software revenue isn't scaling fast enough by year three, TPG may face pressure to sell before the thesis fully plays out.

And then there's the talent issue. Accounting already has a labor shortage — CPA exam pass rates are at a 15-year low, and Big Four firms are losing staff faster than they can recruit. If Smith Howard's technology-forward pitch doesn't resonate with recruits who still see accounting as a relationship business, hiring could become a bottleneck.

Five years ago, PE in professional services meant dental and veterinary roll-ups — industries where patients didn't care much about provider continuity and economies of scale were obvious. Then it was law firms (litigation finance, back-office ops), consulting (Accenture's dozens of acquisitions), and now accounting.

The common thread: private equity is betting it can bring operational rigor and technology to industries that have resisted both. Whether that bet works depends less on the capital deployed and more on whether the acquirers understand what made these businesses valuable in the first place.

Smith Howard's pitch is that technology enhances the relationship, rather than replacing it. Accountants spend less time on data entry and more time on strategy. Clients get faster turnarounds and proactive advice instead of reactive compliance. And the firm becomes more valuable because it's built something competitors can't easily replicate.

If that thesis holds, TPG will have a template for acquiring dozens more accounting firms and stitching them together with proprietary software. If it doesn't, this becomes another cautionary tale about what happens when financial engineering meets relationship-driven services.

Either way, your accountant's firm is probably getting a pitch from a PE fund in the next 12 months. Whether that's good news depends on who's answering the phone.

Smith Howard expects to close its first post-TPG acquisition by the end of Q3 2026. The firm has eight active targets under LOI, ranging from $7 million to $18 million in revenue, concentrated in Florida, Tennessee, and the Carolinas.

On the software side, TaxOS is being rebuilt for a Q4 launch with expanded automation features — including integration with QuickBooks, Xero, and NetSuite, which should make onboarding faster for prospective licensees. The firm is also piloting AdvisoryIQ with three beta clients, with a commercial launch targeted for early 2027.

TPG hasn't publicly stated an exit timeline, but the firm's growth equity fund typically holds assets for 4-6 years. That suggests a 2030-2032 exit window, by which point Smith Howard would need to be generating north of $250 million in revenue with software contributing 15-20% of that total for the thesis to work.

The question is whether the market will care more about the accounting revenue or the software revenue when that exit comes. Because if it's the latter, Smith Howard stops being a CPA firm that built some tools — and becomes a software company that happens to do accounting.