How PE investment is changing tax & accounting firms, and what it means for MSP’s (2026)
A few years ago, private equity interest in UK accounting was a novelty. Today it's the new normal. In the space of eighteen months, Grant Thornton sold a majority stake to Cinven in a transaction valued at around £1.5bn, the largest PE deal in the UK accounting sector to date. Cooper Parry took majority investment from Lee Equity Partners. Apax bought the professional services arm of Evelyn Partners. Goldman Sachs Alternatives acquired AAB. Azets, backed first by Hg and then PAI Partners, has grown through close to 100 acquisitions and is now comfortably in the UK's top ten firms.
The pace of change is pretty wild. Across the UK Top 75, 17 firms are now PE-backed, with collective fee income up nearly 20% year on year against a market average of 5%. Globally, PE and VC invested $6.3bn in the accounting sector in 2024, the largest sum in a decade. And the firms that haven't yet taken investment are feeling the pressure regardless, because the ones that have are growing fast, acquiring aggressively, and setting a new competitive baseline for the whole market.
For managing partners, and service providers, the question is no longer whether PE is coming to their corner of the sector. It's whether their firm is operationally ready for what it demands.
What PE investors actually want from the tax & accounting industry
The investment thesis is consistent across deals. Tax & accounting firms offer predictable, recurring revenue. Demand is recession-proof. The market is ripe for consolidation. And there's a clear advisory growth runway if the compliance grind can be properly managed.
The PE value creation playbook follows from there. It includes improving operational efficiency, reducing the cost per unit of delivery, investing in technology, and scaling the platform. Advisory revenue, which typically pays twice what compliance work does, is the prize at the end of that journey.
That's the plan on paper. The gap between the plan and the operational reality of most accounting firms is where things get harder.
The operational reality PE is walking into
Most accounting and tax firms weren't built for transformation at pace. Many are still running complex service delivery on email, shared inboxes and spreadsheets. Cloud adoption is incomplete. Point solutions don't talk to each other. Process discipline varies between teams, offices and partners, sometimes sharply.
Partnership structures compound this. Partners have historically resisted technology spend without a clear, near-term return. Change management in a firm where multiple senior stakeholders have significant autonomy and a financial stake in short-term profitability is genuinely hard, even with a PE investor pushing the agenda.
The investment brings urgency. It doesn't automatically bring the operational infrastructure to act on it.
Where the real opportunity sits
The tax & accounting firms most likely to move quickly aren't the mega-deals. A Grant Thornton-scale consolidation is complex, politically charged and will take years to fully integrate. The more interesting opportunity is in the mid-tier: firms in the £100-200m revenue range, 750 to 2,000 employees, nationally focused, with a clear PE mandate and a management team already bought into the transformation agenda.
Cooper Parry is a good example of the profile. £180m revenue, 1,450 staff, 11 acquisitions completed before the Lee Equity deal closed. That's a firm with growth momentum and a new investor pushing for operational scale. The question is whether the workflows and infrastructure can keep up.
For firms at this size, the operational priorities are clear: get real-time visibility across the whole service operation, standardise workflows across offices and service lines, automate the compliance grind, and free up senior fee earners for advisory work. Done properly, that's not a multi-year transformation. It's months.
Why orchestration is the enabler of PE value creation
The PE value creation playbook, efficiency, scalability, technology ROI, advisory revenue growth, maps directly onto what process orchestration delivers. One platform across all service lines. Real-time visibility into who is doing what, for which client, by when. Intelligent work routing based on skill and capacity. Automated compliance workflows that free up your best people. Audit trails and governance that regulators and investors both need to see.
The firms that get their operational foundations right first are the ones that can actually deliver on the transformation mandate. Without that layer in place, technology investments pile up without connecting, headcount targets get missed, and the advisory runway that justified the investment stays out of reach.
PE investment in accounting is an accelerant. Accelerants only work if the vehicle is built for it. The firms that use this moment to fix how work actually gets done (not just who owns the equity) will be the ones who win this wave.
