Buying an Accounting Practice: When Clients Don't Stay

The situation

Tuan and Minh had spent over a decade building a busy physiotherapy clinic in Kenora, and by their forties they were looking for a second income stream that did not depend on either of them being physically present to treat patients. When a local accountant named Niloufar began planning her retirement, word reached them through a mutual contact that she wanted to sell her practice to someone who would keep serving her long-time clients rather than fold the book into a larger regional firm. Neither Tuan nor Minh had any background in accounting, but the numbers were appealing: Niloufar's practice billed roughly $1.4 million a year, mostly from small business and personal tax clients she had served for fifteen to twenty years, many of them on a retainer basis.

They came to Treadstone Law once they had a handshake agreement on price and wanted help turning it into a binding contract. This was their first time buying any kind of business, let alone one built almost entirely on relationships rather than physical assets. That distinction turned out to matter more than either of them expected.

What made this deal different

Most small business sales involve some mix of equipment, inventory, a lease, and a customer list. A professional practice like an accounting firm is different: the physical assets are usually a few desks and a filing system, and almost all of the purchase price is goodwill - the expectation that clients who trusted Niloufar personally will keep paying invoices to whoever takes over the file. That expectation is much less solid than it sounds. Clients of a sole-practitioner accountant often think of the relationship as being with the person, not the business. When the person who has done their taxes for fifteen years steps back, some clients follow her into retirement referrals, some simply shop around, and some stay out of pure inertia.

Niloufar and her own advisor had proposed a purchase price of roughly $3.5 million, built on a multiple of her annual billings, paid partly at closing and partly over the following year. Tuan and Minh's instinct was to trust the number because Niloufar had been in practice a long time and seemed to have a loyal client base. Our review focused on a different question: what happens to that $3.5 million price if the loyalty turns out to be to Niloufar rather than to the firm they were about to own? A flat price, paid regardless of what actually walked out the door with the seller, would have put the entire retention risk on the buyers with no recourse if the numbers did not hold up.

What we did

1. Restructured the price around a holdback tied to actual retained billings. Instead of paying the full $3.5 million on a fixed schedule, we negotiated a structure where about $2.8 million was paid at closing and the remaining $700,000 was held back and measured against how much of the client billing base was still active and paying twelve months later.
2. Built a formula, not a threshold. Retention clauses are often written as pass/fail tests - keep 85% of clients or lose the whole holdback. We advised against that. Instead, the agreement reduced the holdback dollar-for-dollar based on the shortfall in annual billings retained, multiplied by the same revenue multiple used to price the deal in the first place. That way, a small shortfall produced a small, proportional reduction, and a large shortfall produced a large one, rather than an all-or-nothing cliff that could unfairly reward Niloufar for losing a handful of clients or unfairly punish her for losing none.
3. Added a non-solicitation and non-competition clause covering Niloufar. Without this, nothing would have stopped her from taking on a handful of former clients informally after retirement, or referring them to a colleague, while still collecting the holdback. The clause restricted her from soliciting or servicing the practice's clients for a defined period after closing.
4. Arranged a structured transition period. Niloufar agreed to personally introduce Tuan and Minh, along with the staff bookkeeper who was staying on, to the largest clients in the weeks after closing, and to remain available on a limited consulting basis during the measurement year. The goal was to give clients a reason to trust the new ownership rather than simply announcing a change and hoping it stuck.
5. Pushed back on the retention assumption itself. Niloufar's projections assumed retention in the high eighties. We encouraged Tuan and Minh to model the deal at a more conservative retention level before signing, so that if the true number came in lower, the loss would be a known, planned-for risk rather than a shock that threatened their ability to run the practice and their clinic at the same time.

The outcome

The closing itself went smoothly, and for the first few months the transition looked promising. Then, about four months in, the practice's single largest client - a long-standing corporate account worth roughly $140,000 a year in billings - gave notice that it was moving its work to an accountant who had previously worked alongside Niloufar and had since gone independent. The client had a personal relationship with that individual dating back years before Niloufar ever took over the file, and no amount of introduction meetings was going to change that once the alternative existed.

Two smaller clients also left over the course of the year for unrelated reasons, and by the twelve-month measurement date the practice had retained about $980,000 of the original $1.4 million in annual billings - roughly 70%, well short of the high-eighties assumption Niloufar's own numbers had projected. Under the formula in the agreement, the shortfall in retained billings came to about $420,000, which, multiplied by the 2.5-times revenue multiple used to price the deal, worked out to a reduction of roughly $1,050,000 - more than the entire $700,000 holdback. The full holdback was forfeited under the formula, bringing their real total purchase price down to the $2.8 million paid at closing rather than $3.5 million.

That was not a win in the sense of getting everything they hoped for. They had budgeted for a $1.4 million book of business and ended up with one worth closer to $980,000 in ongoing billings, and the year of transition cost them real time and stress on top of running their clinic. But it was a contained loss rather than a crippling one. Had they signed the deal Niloufar's advisor originally proposed - a fixed $3.5 million paid regardless of what happened to the client base - they would have absorbed the entire retention shortfall themselves, with no mechanism to recover any of it. The holdback formula did exactly what it was designed to do: it moved a meaningful share of the retention risk back onto the person best positioned to prevent it, without punishing Niloufar for risks genuinely outside her control.

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