A bookkeeping business in Australia is typically worth between 1.5x and 2.5x annual recurring revenue, or 2x to 4x EBITDA — depending on how sticky your clients are, whether the business runs without you, and whether you’re running Xero or something from the 2008 era. A well-structured practice doing $600K in retainer billings with four staff and clean systems is a very different asset from a sole trader juggling the same revenue on a mobile and a prayer. Same industry. Completely different businesses.
If you’re thinking about selling in the next few years — or just want to know what you’ve built — here’s how the numbers actually work.
How Bookkeeping Businesses Are Valued in Australia
Unlike manufacturing or trades businesses, bookkeeping practices are valued almost entirely on the quality of their recurring cash flow. There are two main methods buyers use, and serious buyers use both as a cross-check.
Revenue multiple. The fastest and most commonly quoted method. Take your annual retainer revenue (not one-off work — recurring only) and apply 1.5x–2.5x. A practice with $400K in annual retainers is worth roughly $600K–$1M by this method. It’s quick. It’s intuitive. It’s also easy to game by inflating what counts as “recurring,” which is why buyers always dig into client contracts before signing anything.
EBITDA multiple. The more rigorous approach. Normalise your earnings — add back the owner’s salary, super, personal expenses, and any one-off costs — and apply a multiple of 2x–4x for a standard practice, up to 5x for a well-systemised multi-staff business with strong retainer coverage. This rewards profitability rather than just revenue, which matters when two practices billing the same amount might have vastly different margins.
The rule of thumb: a well-run bookkeeping practice doing $500K+ in annual retainers, with two or more staff, cloud-based systems, and less than 20% revenue from its largest client, should expect 3x–4x EBITDA.
Both numbers should land in a similar range. If the revenue multiple is suggesting $1.2M but the EBITDA multiple is saying $400K, your margins are the problem — not the client base. Fix the cost structure before you go to market.
For a deeper look at how EBITDA multiples vary by industry, the EBITDA multiples by industry in Australia guide covers where bookkeeping sits relative to other professional services.
What Actually Drives the Multiple Up (or Down)
This is where most bookkeeping business owners are surprised. The headline multiple — 2x, 3x, 4x — is just the starting point. What moves it is specific to your business.
Recurring revenue percentage. The single biggest driver. A practice where 90% of revenue is on monthly retainer contracts (not “we invoice them most months”) commands a meaningful premium over one where 60% is project work and tax returns. Retainer revenue is predictable; buyers can underwrite it. Project revenue is not. I spoke to a buyer last year who had two similar practices on the table — same revenue, same team size, same city. One was 85% retainer, one was 60%. The offer difference was 0.8x EBITDA. Same practice size; different story.
Client concentration. If your top client represents more than 15% of revenue, expect buyers to apply a discount — or worse, structure part of the purchase price as an earn-out tied to whether that client stays. Losing your biggest client post-sale is a risk every buyer prices in. The remedy is straightforward (spread the revenue before you sell), but it takes time.
Technology stack. Cloud-based systems — Xero, QBO, Ignition for proposals — are worth more than legacy desktop setups. Not because the software is inherently valuable, but because cloud systems mean the practice can scale and be managed remotely, which opens up the buyer pool significantly. A practice still running MYOB desktop for half its clients signals higher transition risk (and more work for the buyer’s team). Buyers pay less when they can see the integration project ahead of them.
Staff structure and licensing. If you’re a registered BAS agent (which all bookkeeping businesses servicing clients must be), that’s table stakes — not a premium. But having qualified staff who are also registered BAS agents changes the buyer’s calculus substantially. A buyer acquiring your practice needs to be confident the compliance obligations can be met without you. Two qualified staff with active registrations is very different from “the owner runs everything and has a casual who does data entry.”
Owner dependency. The question every buyer asks: what happens when you leave? If the answer is “clients call my mobile and I know everything by memory,” that’s a problem (which is more common than most owners would like to admit). If the answer is “we have documented workflows in Practice Ignition and Karbon, staff handle client communication, and I only step in for complex issues,” that’s a business worth buying at a premium. See our guide on key person risk for how to reduce this before you go to market.
The Sole Trader Problem
If you’re running a bookkeeping business on your own — no staff, just you and maybe a part-time admin — your sale price is going to reflect that reality. Sole trader bookkeeping practices typically sell for 1x–1.8x annual revenue, not because the revenue isn’t real, but because the buyer is essentially buying a client list and a goodwill expectation that clients will follow them. Some will; some won’t.
The honest version: most sole trader bookkeeping businesses sell for $80K–$200K, even when they’re billing $200K–$300K annually. That gap exists because the buyer is taking on significant transfer risk — they don’t know your clients, your clients don’t know them, and there’s nothing binding any of those clients to stay.
The way to change this is to build before you sell. Hire at least one qualified staff member. Document everything. Put clients on formal retainer agreements with the practice entity (not with you personally). That transition typically takes 12–18 months but can double or triple what you walk away with. Read our guide on how to increase your business value before selling — most of it applies directly.
Virtual Bookkeeping Practices: A Growing Premium
One shift worth noting: virtual and remote-first bookkeeping practices are increasingly attracting a premium over geographically constrained practices, particularly from acquirers who already operate nationally. A practice in Perth doing $600K in retainers but serving clients entirely online — Melbourne manufacturers, Sydney trades businesses, Brisbane hospitality operators — is a more scalable acquisition than one where every client is in the suburb next door and expects a face-to-face quarterly meeting.
This isn’t universal. Some buyers (usually regional accounting firms) specifically want the local client relationships. But if your buyer is a national bookkeeping firm or an aggregator building a remote team, geographic diversity is a feature, not a complication.
What Buyers Are Actually Looking For
The typical buyer for a bookkeeping practice in Australia falls into one of three categories: an individual bookkeeper stepping up to ownership, a small accounting firm looking to add bookkeeping capacity, or (increasingly) a platform or aggregator acquiring practices at scale.
Each has different priorities. The individual wants a manageable transition and will value low owner-dependency above almost everything else. The accounting firm wants client synergies and may already have their own systems they’ll migrate your clients onto — so your technology stack matters less than client quality. The aggregator is running a financial model and wants recurring revenue predictability above all.
Knowing your likely buyer changes how you prepare. For a guide on understanding what buyers prioritise, see what buyers look for when buying a business.
A Realistic Valuation Range
To give you a concrete anchor:
- Sole trader, $150K–$300K revenue, mostly one-off work: $80K–$150K
- Small practice, 1–2 staff, $300K–$600K revenue, mixed retainer/project: $200K–$450K
- Established practice, 3–5 staff, $600K–$1.2M revenue, 70%+ retainer: $500K–$1.2M
- Multi-staff, systemised, $1M+ retainer revenue, low client concentration: $1M–$2.5M+
These are market-realistic ranges based on comparable sales, not aspirational numbers. The high end requires genuine recurring revenue, documented systems, and a team that can run the practice without the owner in the room.
Getting to a Proper Number
If you’re seriously considering a sale in the next one to three years, the most useful thing you can do right now is get a proper valuation from someone who’s actually sold bookkeeping businesses — not a generic business broker applying a standard multiple, and not an accountant who’s primarily doing your tax returns. The nuances of bookkeeping practice valuation (retainer quality, BAS agent licensing, software stack, client contracts) require sector-specific knowledge. The small business valuation methods guide explains the approaches in more detail.
If you want a quick indication of what your practice might be worth, start with our free valuation calculator. For a serious conversation about a sale process — or just to understand what’s realistic for your specific business — reach out to us directly. We work with professional services business owners across Australia and can give you a straight answer without the sales pitch.