Buy a Retiring CPA's Firm and Add AI: The Model Behind a $12B Valuation

Thrive Holdings announced on 12 August 2026 that it raised $2 billion at a $12 billion valuation, and accounting is one of its two founding platforms. That platform, Current (formerly Crete Professionals Alliance), says it now has more than $500 million in annual revenue across nearly 30 independent firms. The playbook is simple to state: buy into established firms whose owners are aging out, then rebuild the work around AI. Whether you can run a small version of it for $50,000 is a different question, and this post works through it.

What is the "buy a CPA firm and add AI" opportunity?

Founders of small accounting firms often have no obvious exit, and funded buyers now compete to offer one. Crete's first announced round in 2024, led by Thrive Capital and Bessemer Venture Partners, was pitched as an alternative to traditional exit options for owners of accounting firms. Partner firms keep their leadership, brand and culture.

The supply side is thinning. An AICPA survey reported by BestColleges found bachelor's accounting completions fell 7.8% between the 2021 and 2022 academic years, after declines of 1% to 3% a year since 2015-16. The same article notes that most programs expected flat or higher enrollment afterward, so the trend is not one-directional.

Investors are also moving. The CPA Trendlines tracker follows 525 events, including 473 acquired firms, since 2016, with $49 billion in transacted enterprise value as of May 2026. A separate trade item reports that nearly half of the top 30 US CPA firms have taken private equity capital or moved to an alternative practice structure. That item promotes an advisory tool, so treat the figure as indicative.

Is the $12 billion valuation about CPA firms?

Not directly. The $12 billion belongs to Thrive Holdings, which says on its own site it owns and operates more than 70 businesses and has raised more than $3 billion since inception. Accounting is one platform, IT services (Shield) is another, and the new money also funds a third platform for regulatory work on physical infrastructure. No separate valuation for Current has been published.

OpenAI took an ownership stake in December 2025, according to TechCrunch, and the size of the stake is undisclosed. So the headline number prices a bet on a repeatable method: buy services businesses, apply AI, hold them for the long term. Current's CEO describes the holding period as "effectively forever".

How much can a CPA firm make?

Net income depends on revenue, margin and debt. The figures below are example estimates, not forecasts. The assumptions: purchase price is the revenue multiple shown; operating margin is 30% before owner pay; 90% of the price is financed over 10 years at 10% interest; no revenue lost after the sale.

Those multiples sit inside reported ranges. A Journal of Accountancy article says small-firm multiples tend to run 0.75 to 1.2 times revenue, though it dates from 2014 and carries an archive notice. A 2026 estimate attributed to CT Acquisitions and reported by Jupid, a vendor building its own CPA-firm roll-up, gives 0.7x to 0.9x under $500,000 in revenue and 0.9x to 1.2x from $500,000 to $2 million.

The 30% margin is an assumption. The Journal of Accountancy article notes that a practice with a 20% margin will not command the same multiple as one with a 40% margin. If retention slips, the math moves fast: in its worked example, a $1 million practice at 1x over five years pays the seller $800,000 if clients representing 80% of revenue stay.

AI is the upside case, not the base case. Current reports 31% average savings in tax preparation time across 7,000 returns. If that held in your firm, a 30% margin could rise. It is a company claim, so do not price the purchase on it.

Which companies are already doing this?

Four funded players are worth studying. Each did something different.

Current. The Tampa-based firm was founded in 2023 by Jake Sloane and Frank Zhang of ZBS Partners. The CPA Trendlines tracker counts 24 deals by Crete Professionals Alliance through 31 May 2026, with 10 in 2025. What it did differently: it left firm names and leaders in place. What you can copy: seller-friendly terms, where the owner keeps a stake and a role.

Thrive Holdings. What it did with $12 billion of valuation: fund a multi-platform buying program with an AI lab embedded. What you can do with $50,000: nothing of that kind. Use it as a map of where the buyers are, not as a template.

Accrual. Launched with $75 million. The company says its AI agents act as a preparer and that preparation time dropped by more than 85% and review time by up to 60%. Those are company claims. It works with firms such as Armanino, and you can buy access to tools like it as a customer.

Modus. Launched in June 2025 and invests in audit-first firms. It has invested in an unnamed top-200 platform with more than $30 million in revenue, and the company says that firm should more than double its organic growth rate in 2026. That is a forecast, not a result.

What did funded companies do with millions, and what can you do with $50K?

Funded buyers use capital to acquire many firms and hire engineers. Current's earlier plan, cited by CPA Practice Advisor to Reuters, was to invest more than $500 million in acquisitions over two years. You cannot match that, and you should not try.

With $5,000 to $50,000 the realistic version is smaller. Buy a book of clients or a very small practice, financed by the seller or a lender. The SBA says 7(a) loans reach up to $5 million, and permitted uses include changes of ownership. Pair that with the seller staying on during a transition, which is the same logic as the funded platforms. If you like the idea of owning a business you did not train for, the same logic appears in our look at owning a plumbing company without being a plumber.

Do you need a licence or certification?

Rules vary by state and by type of work, so confirm with your state board of accountancy before you sign anything. The structural issue is independence. Audit and other attest work sits in a CPA firm, and investors usually fund a separate non-attest entity that provides back-office services, technology and staff.

The AICPA's ethics committee is working on this directly. A task force posted a discussion memo on independence rules for alternative practice structures, with comments due 15 June 2025. Under one option, the non-attest entity would be treated as a network firm of the attest firm. If you are not a CPA, a practical route is to buy non-attest work such as tax and bookkeeping, and to hire or partner with a licensed CPA. Get an attorney who knows your state.

How much does it cost to start?

Example estimates for a small practice with $400,000 in revenue, using the 0.7x to 0.9x band reported for firms under $500,000.

The 10% down payment is an assumption, not a lender rule. Many deals also tie part of the price to retention, so the cash due at closing can be lower than the headline price.

How do you buy a CPA firm, step by step?

1. Decide the service line: tax, bookkeeping, advisory or audit. Audit needs a CPA-controlled firm.
2. Check your state board of accountancy rules on ownership and licensing.
3. Pull three years of financials. Ask for revenue by client and by service.
4. Look at client concentration. A large share of revenue from one client is a risk.
5. Screen for sellers who want to retire in one to three years and will stay through a transition.
6. Value the firm using the revenue multiple range and your own margin check.
7. Negotiate retention-based terms and a non-compete.
8. Arrange financing with an SBA-approved lender and ask for seller financing.
9. Close, then keep staff, brand and software unchanged for the first 90 days.
10. Introduce one AI tool at a time and measure hours saved before adding another.

Which free tools and resources can you use?

Free tools run out at the point where you need client-data security, tax-engine integration and audit trails. Budget for paid software once you hold other people's tax data.

How can you use AI in a CPA firm?

Start where the funded players started: tax preparation and review. Accrual and Current both focus on it, and both report large time savings that no independent test has confirmed. Other uses include drafting client emails, organising documents and answering the phone. If your target firm has contractor clients, our guide to reselling AI receptionists to contractors covers one low-cost add-on service.

Keep a human reviewer on every return. Company-reported accuracy of up to 98%, the figure Current states, still leaves a meaningful error rate across thousands of returns.

How do you scale it faster?

Add a second firm only after the first holds its clients for a full tax season. Funded platforms do the same thing at larger scale. For a local operator, the repeatable step is a standard transition agreement and a standard onboarding checklist. Our piece on a $1 million HVAC company shows how another trade handles the jump from one owner to a team.

What are the risks?

• Client loss. Payment structures that tie price to retention shift risk, but they do not remove it.
• Overpaying. Asking prices ran at a median of 1.15x revenue against 1.02x for completed sales, according to Jupid.
• Independence rules. The AICPA rules for private equity-backed structures were still being developed as of the March 2025 report cited above.
• Tool risk. The AI results quoted here are company claims.
• Debt. In the example table, loan payments take about 43% of operating profit in the small case and about 48% in the medium case. A revenue drop of 20% would hurt.

This is research, not legal, tax or financial advice. No income is guaranteed.

What's still unclear?

Current's firm count differs by source: its own June 2026 release says nearly 30 independent firms, while TechCrunch reports more than 50 in August. The two may use different definitions, and no explanation has been published. Company-reported AI gains have no independent verification. Thrive Holdings' revenue, profit and margins are not public, so the $12 billion cannot be tied to earnings. The size of OpenAI's stake is undisclosed.

The weakest point of the argument is scale. A model that works with embedded AI engineers and hundreds of millions in capital may not carry over to a one-person buyer. The multiple data you can verify is also dated or comes from a vendor, so get a current appraisal from a practice broker before you bid.