How much is an accounting firm worth?

Short answer: accounting practices are the rare trade priced on revenue — realized sales cluster near 1× gross revenue, paid over time and tied to whether the clients stay. The headline multiple is only half the deal; the retention clause is the other half. See Accounting Firms, then run your numbers in the valuation calculator.

The number

This trade has real data. BizBuySell's industry multiples (closed sales, trailing five years through Q2 2026) put Accounting and Tax Practices at 2.27× SDE and 1.08× revenue, median sale price $450,000. The IBBA Market Pulse (Q2 2026) size ladder runs across all small businesses: 2.0× SDE under $500K, 2.8× at $500K–$1M, 3.1× at $1M–$2M, then EBITDA multiples — 4.8× at $2–5M and 5.8× at $5–50M. For scale context only: public companies in Damodaran Online's Business & Consumer Services bucket (January 2026) trade at 14.26× EV/EBITDA. That is a proxy ceiling for large, liquid companies — not your price. A small private business sells at a steep discount for size, illiquidity, and owner risk.

Worked example, both lenses, math shown:

• Gross revenue (assumption): $600,000
• SDE margin (assumption): 40% → SDE = $600,000 × 0.40 = $240,000
• SDE lens: $240,000 × 2.27 = $544,800
• Revenue lens: $600,000 × 1.08 = $648,000

Why the gap? The revenue price is rarely paid up front. It is typically paid over 3–5 years and adjusted by a retention guarantee — if only 85% of the billings stay, you collect roughly 85% of the price. The SDE lens is closer to the cash a buyer underwrites on day one. Buyers price risk and opportunity cost; in accounting, the risk has a name, and it's client retention.

How buyers actually value an accounting firm

Buyers price a practice per gross dollar, then negotiate how much of that dollar they actually guarantee. The questions that set the price: What is the mix — recurring monthly accounting and payroll (worth the most, it renews itself), annual tax compliance (sticky but seasonal and price-shopped), or audit and attest (higher value, but it needs licensed staff who stay)? What are the realization and billing rates — a $600,000 practice billing $150/hour in a $250 market has built-in price increases a buyer will pay for; one already at top rates doesn't. How old are the clients, literally — a book of 70-year-old sole proprietors is a melting asset. And the decisive one: will clients stay through the transition? Deals are structured around it — the seller introduces the buyer personally, works a tax season or two alongside them, and the payout floats with collections. A practice where clients have never met anyone but the owner is priced as if a third of them will leave, because historically, some do.

What raises the price — and what kills it

Raises it:

• Monthly recurring bookkeeping, payroll, and advisory — revenue that arrives without a tax deadline
• Clients on fixed-fee agreements with annual price escalators already in place
• Staff accountants and an EA or CPA bench that stays — buyers pay for capacity, not just clients
• Niche depth (e-commerce, dental, construction) where the buyer can't easily replace the expertise

Kills it:

• A 1040 mill: thousands of low-fee individual returns, priced against software and seasonal chains
• One client at 15%+ of revenue, or a book concentrated in a dying local industry
• Unbilled WIP and write-offs nobody can explain in diligence
• The owner doing every review personally — the quality control walks out with the seller

Move your number

Three levers:

• Convert tax clients into monthly clients. Every 1040 client who adds monthly bookkeeping and a mid-year planning call moves revenue from the discounted seasonal bucket to the premium recurring bucket. The ClaroPro team builds the client-communication and billing operations — reminders, document collection, invoice follow-up — that let a small staff run that model.
• Collect faster, cheaper. Engagement letters with cards on file and ACH for balances cut the 45-day collection drag and the card fees on five-figure tax bills. Protecting that margin is the Finix payments team's work.
• Systematize the workflow. A documented tax and bookkeeping pipeline in real practice-management software — not in the owner's inbox — is what lets a buyer keep your staff and your clients. A Nova engineering team can integrate the stack and automate the data movement between it.

Test your own mix in the calculator, prefilled for accounting firms — then look at which bucket your revenue sits in.

This is an educational framework with shown math, not an appraisal. A real price is set by a real buyer on a specific day — and in this trade, by how many of your clients are still there a year later. These caveats are written for the owner's protection: knowing the retention math keeps you from overpaying for a book that melts, underselling one that won't, or signing a payout schedule that hands all the risk to you. Never invent. Show the math. We're on the side of the business owner.