Why Tax Firms' Revenue Growth Isn't Boosting Margins Past 30 Percent

Tax firms are racking up revenue in 2026, with two-thirds expecting further gains, yet average profit margins remain stuck above 30 percent — exposing a dangerous gap between growth targets and actual strategy.

The Thomson Reuters Institute’s June 25 analysis of its 2026 State of Tax Professionals Report, based on a survey of more than 600 tax professionals worldwide, paints a picture of resilient top-line performance shadowed by stubborn profitability challenges. Nearly half of firms saw profits rise in 2025, with average margins exceeding 30 percent and top performers hitting 40 percent. But the data shows revenue increases often fail to fully reach the bottom line.

Revenue Levers Reaching Their Limits

Two-thirds of tax, audit, and accounting firms anticipate revenue growth over the next 12 months. The primary drivers cited are fee and rate increases at 23 percent and new client acquisition at 22 percent. Both have practical ceilings: you can only raise prices or add clients so far before needing fundamentally different approaches.

At the same time, client demand for deeper expertise is surging. 74 percent of clients expect their tax professionals to act as strategic advisors, not just compliance partners. 65 percent of firms are expanding or planning to expand into tax strategy and business consulting services.

The problem is clear: advisory work currently generates the lowest margins among service lines.

“The advisory pricing gap is not caused by a lack of demand — the root cause is a lack of confidence in the value of the services provided.”

Firms that have transitioned advisory engagements to fixed-fee or value-based pricing are breaking through the 31 percent margin barrier. Those sticking to hourly billing keep high-value work commoditized and less profitable.

Talent Shortages and Succession Risks Compound the Pressure

Capacity constraints are biting hard. 40 percent of all firms — rising to 51 percent among midsize practices with 4-29 professionals — report being limited by available talent. Midsize firms face acute competition for staff as larger organizations offer higher compensation packages.

Succession planning adds urgency. 51 percent of firms expect significant partner or leadership transitions by 2030. While most intend to promote internally, 27 percent are eyeing external recruitment to fill gaps.

These human capital pressures explain much of the margin stagnation: higher costs for retention, training, and recruiting offset revenue gains before they improve profitability.

Practical Steps for Professional Services Leaders

The report delivers a blunt message: viewing growth itself as the strategy — rather than a goal achieved through deliberate choices — leaves firms vulnerable. Professional services leaders in accounting, tax, and consulting should prioritize three actions in the second half of 2026:

• Reprice advisory services with confidence. Move aggressively from hourly rates to value-based and fixed-fee models that capture the strategic impact delivered to clients. Early adopters are already seeing measurable margin expansion.
• Align talent with high-value work. Delegate routine compliance tasks to junior staff or automation, invest in targeted upskilling, and use outsourcing where appropriate to free senior professionals for advisory roles.
• Turn succession into a strategic reset. Treat upcoming leadership changes as opportunities to reshape firm structure, explore mergers, or introduce outside capital for scale.

Technology investment offers additional leverage. AI is the only category seeing year-over-year budget increases, with firms using it to drive efficiency in compliance while shifting human effort toward higher-margin advisory services.

For professional services firms navigating 2026, the conditions are favorable: strong client demand, maturing tech tools, and revenue tailwinds. The differentiator will be execution. Firms that close the advisory pricing gap, solve their talent math, and treat profitability as a deliberate outcome — rather than a hoped-for byproduct — stand to push margins well beyond the current 30-40 percent range achieved by industry leaders.

Those that treat the favorable market as sufficient on its own risk watching revenue growth evaporate into costs without delivering the bottom-line impact their partners and stakeholders expect.