How a partner buy-in works at an accounting firm

The partners would like to offer you a stake. It is meant to be the top of the ladder. Increasingly it arrives as a number with no method attached and a loan to fund it.

Plenty of accountants now say no, and Allan Wilson has written about why young accountants are turning ownership down. This is the practical companion, for two readers: the person offered a buy-in, and the owner designing one. Sections are signposted for each.

This is journalism, not legal, tax or financial advice. Get your own lawyer and tax adviser, not the firm’s.

“Buying in” is shorthand for up to four separate things, and a clear offer prices them separately.

• Equity and voting rights. Your share of ownership and your say over how the firm is run. Voting and economic shares are sometimes split.
• A capital account. Your share of the money the firm needs to operate: work in progress, debtors, equipment and cash, less what it owes. This is usually repaid when you leave, subject to the agreement.
• Goodwill. The value of the client base and future earnings beyond tangible assets. The contested part, because it is an opinion about the future.
• A profit share. The reason to do it: the gap, over years, between a senior’s salary and an owner’s drawings.

For the incoming partner, the test: which part of the number is capital (you get it back) and which is goodwill (you get it back only if someone pays for it later)? If the offer does not say, ask.

Valuation methods

There is no standard figure for what it costs to buy into an accounting firm. Anyone who quotes one is quoting someone else’s firm. The number comes from the method:

• Book value only. You pay your share of net tangible assets and no goodwill. Suits a firm that wants partners more than their money.
• Capital plus a goodwill formula. Goodwill is set by a formula written into the agreement, often a multiple of recurring revenue or of maintainable earnings. Our guide to what an accounting firm is worth explains how buyers look at those measures when a whole practice sells.
• Independent valuation. An outside valuer sets the price at entry and, ideally, on the same basis at exit.
• No goodwill in, no goodwill out. Simple, and it removes the risk of paying a premium the next generation will not honour.

The method matters less than symmetry. Valued generously on the way in and conservatively on the way out, a buy-in transfers value from you to the partners leaving first.

Valued generously on the way in and conservatively on the way out, a buy-in transfers value from you to the partners leaving first.

Payment structures

• Capital contribution in cash, often funded by a personal loan secured against your home.
• Bank finance through the firm’s lender, sometimes firm-guaranteed.
• Vendor finance, where the firm or retiring partner lends you the price and you repay it over several years.
• Earn-in from profit share, where part of your drawings is withheld each year until the price is covered.
• Sweat equity, where ownership vests over time for building a service line or client book, with little or no cash paid.

Whichever applies, model three years of take-home income: drawings, less loan repayments, less the tax due on your profit share whether or not it has been paid out.

The stepping stone: salaried or non-equity partner

Many firms offer a partner title with salary and bonus but no capital at risk. Both sides test the fit before money moves; the cost is little control and no claim on the value you build. It works best with a written path to equity: criteria, timeline and method.

Checked against primary sources as at September 2026. Each rule can change.

Australia

Australian practices run as partnerships, companies, trusts or combinations of them. How you hold your interest (personally, through a family trust or a company) drives your tax, and the ATO’s Practical Compliance Guideline PCG 2021/4 sets out how it assesses the risk of professionals directing firm profits to associated entities. It applies from 1 July 2022 and names accounting firms explicitly. Test any buy-in through a holding entity against it before signing.

The Tax Practitioners Board requires a partnership or company tax agent to keep a sufficient number of registered individuals, so the ownership structure has to stay compatible with the firm’s registration. And if the firm calls itself “Chartered Accountants”, CA ANZ’s practice structure rules limit how many principals can be non-CA affiliate members and how much control they hold. Check your own body’s current rules before admitting a partner from outside it.

United States

Ownership of a licensed CPA firm is regulated state by state. The model statute most states build on, the Uniform Accountancy Act (ninth edition, July 2025), requires that a simple majority of ownership, in financial interests and voting rights, belongs to licensed CPAs. Non-CPA owners are allowed only if they are active participants in the firm or its affiliates, among other conditions the state board sets. Some states are stricter. So a non-CPA manager can be offered equity in many states, but the math has to keep the CPA majority intact after every admission and every retirement.

Ownership of a licensed CPA firm is regulated state by state.

On tax, a partnership or LLC interest and S corporation shares are treated very differently on the way in and out, so ask your CPA about the entity type before the price.

United Kingdom

Many UK firms trade as limited liability partnerships under the Limited Liability Partnerships Act 2000. The trap for a new member is the salaried member rules: an LLP member is taxed as an employee if three conditions are all met. Broadly, at least 80% of their reward is “disguised salary” not tied to overall firm profit, they lack significant influence over the firm’s affairs, and their capital contribution is less than 25% of that disguised salary. A buy-in structured as a fixed draw with a token contribution can meet all three.

The Supreme Court’s decision in HMRC v BlueCrest Capital Management (UK) LLP, handed down on 4 August 2026, narrowed the influence test to rights under the LLP agreement and statute, as reported by Mayer Brown. Informal seniority will not count. Firms admitting members on thin terms should have their agreements reviewed.

The partnership or shareholder agreement is where a buy-in is won or lost. Read these clauses before the price:

The partnership or shareholder agreement is where a buy-in is won or lost.

1. Vesting. Does your equity vest in full on day one, or over time? What happens to unvested equity if you leave early?
2. Exit valuation. What method values your interest when you leave, and is it the same as the method used to price your entry?
3. Retirement. Notice periods, any compulsory retirement age, and how long the firm has to pay out your capital and goodwill. Long payout periods leave you as an unsecured creditor of a business you no longer control.
4. Death and disability. Who buys your interest, at what value, and whether it is funded by insurance. Unfunded obligations fall on the remaining partners at the worst moment.
5. Restraints. How far, how long, and which clients. An overbroad restraint may be unenforceable, but you do not want to be the test case.
6. Expulsion and bad leaver. The grounds, the process, and whether a bad leaver forfeits goodwill.
7. Decision rights. What needs a unanimous vote, what needs a majority, and what the managing partner can decide alone.

Long payout periods leave you as an unsecured creditor of a business you no longer control.

• Can I see three years of the firm’s accounts and each partner’s drawings?
• What is the capital account figure, and what is the goodwill figure?
• Which method values my interest when I leave, and how long will I wait for payment?
• How many partners retire in the next ten years, and how is their payout funded?
• Which clients will I be responsible for, and who holds them now?
• What happens if I want out after three years?

Vague answers mean the offer is not ready. Ask for a proper term sheet.

Design against the usual objections: too much debt, too little control, an exit nobody can see.

• Lower the cash barrier. Earn-in from profit, vendor finance, or a book-value-only entry all make the first year survivable.
• Make it symmetric. Use the same valuation method in and out, written down.
• Give real authority. A vote on hiring, pricing and technology decisions, not only a share of profit.
• Show the plan. Share the retirement pipeline and how it will be funded, so the newcomer is not simply financing your exit.
• Fix the workload. Our guide to building a firm you can sell or step away from covers the systems that make ownership worth having.

If the internal route fails, there are three others: sell the practice to another firm, merge into a larger one, or take outside capital. Our piece on independent firms versus private equity looks at what outside capital changes. In US private equity deals the firm is typically split into a CPA-owned attest firm and an investor-backed services company, so “partner” can mean something quite different. Start the conversation years before you want to leave, not months.

Start the conversation years before you want to leave, not months.

How much does it cost to buy into an accounting firm?

There is no general figure. The price is the output of the firm’s own formula for capital and goodwill applied to your share. Ask for the method, the inputs and the resulting number, then have your own adviser test them against the firm’s accounts.

Is a salaried partner a real partner?

In title and client standing, often yes. In law and economics, usually no: no capital at risk, no claim on goodwill and limited votes. In a UK LLP, a salaried member can also be taxed as an employee.

Can a non-accountant become a partner in an accounting firm?

Often, within limits. US states generally require licensed CPAs to hold a majority of ownership. In Australia and the UK, professional body rules on firm descriptions and registration requirements constrain the mix. Check the current rules for your body and jurisdiction.

Should I use a family trust or company to hold my interest?

That depends on your tax position and the firm’s structure. In Australia, any arrangement that routes a professional’s profit share to an associated entity should be checked against PCG 2021/4 before you sign. Take personal tax advice, separate from the firm’s.

What if the partners who offered me the buy-in retire soon after?

Then you may be funding their payout. Ask for the retirement schedule and payout terms upfront, and look for caps on how much the firm pays out to leavers in any one year.