Introduction
The ICAEW’s latest report into the Evolution of Mid-Tier Accountancy Firms points to a period of sector wide firm growth. 94% of respondents saw fee income increase in the past 12 months and a similar number expect this trend to continue over the next few years.
Recruitment, acquisitions, service expansions and investment in technology are all driving growth for accountancy firms.
However, pressure to modernise and maintain healthy cash flow does not always align. Growth often creates large upfront costs long before firms see the financial return. Coupled with income delays from WIP and balancing tax obligations, the financial pressure for accountancy firms soon builds up. Cash flow becomes both a strategic and operational challenge. The bigger the firm becomes, the harder that balancing act gets.
A growing practice can look profitable on paper while still dealing with tight liquidity behind the scenes. That’s becoming one of the defining financial challenges for the mid-tier accountancy market. Firms that plan with accurate forecasting, and structure accountancy practice finance around growth, tend to cope far better when those pressure points appear.
Meeting the new standard for a modern accountancy practice
The operating model of mid-size accountancy firms is changing and becoming more expensive to sustain.
Talent and recruitment pressures
Expertise is becoming increasingly critical for firms, with 74% of respondents to the ICAEW’s report expecting an increase in recruitment for specialist non-chartered accountants.
The ongoing competition will likely raise salary expectations as well as costs to retain existing talent in firms. For firms trying to scale advisory services or sector expertise, recruitment often becomes one of the largest cash demands in the business.
Training and succession investment
Nearly half of respondents cited succession planning as a key challenge.
Firms often need to spend significant sums before they see any commercial return from the next generation of leadership, as new partners may require additional business development training, and may incur fewer chargeable hours while taking on management responsibilities.
Firms are effectively investing in future leadership capacity before seeing a financial return from it.
Technology and operational modernisation
While around two thirds of mid-sized accountancy firms are still within the early stages of AI adoption, AI use is expected to increase across the sector, largely for research purposes and client management.
In addition, upgrading cloud accounting software and introducing more automation into workflows can help bolster productivity for teams and improve client service quality, making it a key factor for client retention.
The issue is timing. Software costs, implementation fees and training requirements arrive immediately, while efficiency gains usually take much longer to make a financial impact.
Many of these investments are essential for long-term competitiveness and growth, but without careful planning they can put significant pressure on short-term cash flow.
Why growth and cash flow fall out of sync
While the ICAEW’s report suggests a positive outlook of growth in the accountancy sector, for many mid-sized firms in the UK, the reality is very different.
Revenue may be increasing year-on-year, but that does not always translate into stronger day-to-day cash flow.
In many cases, firms are taking on higher operating costs, larger teams, and making investment commitments while income remains tied up..
Delayed revenue is a persistent cash flow challenge, with NatWest’s Accountancy Trends Report highlighting a median lock-up period of 105 days for UK firms.
Cash can remain tied up for extended periods due to:
- Long billing cycles across audit, accounts and advisory work
- High levels of work in progress (WIP) awaiting completion or partner sign-off
- Slow debtor collection and extended payment terms
- Advisory or specialist projects with staged billing milestones
As firms grow, these pressures often become more pronounced. Larger client engagements are typically more complex, involve longer delivery timelines, and require more senior oversight before invoices can be raised.
A profitable firm can therefore still experience cash pressure simply because too much revenue is sitting in WIP or outstanding debtors at any one time.
Firm expansions are another source of pressure on working capital. While the appetite for acquisitions looks strong – almost 75% of firms are looking to make one in the next 3 years – the immediate costs behind them can stack up, as firms invest in new advisory or specialist service lines, office expansions, or recruitment ahead of demand to support capacity planning.
There’s also the reality of how accountancy firms operate. Tax deadlines, audit cycles, VAT periods and year-end reporting all create spikes in workload. This can create periods where operational activity is exceptionally high, but cash collection often struggles to keep up.
At the same time, firms still need to manage fixed overheads including salaries, software subscriptions, compliance costs and partner drawings, regardless of when client payments are received. Without careful financial planning, this can lead to operational or service disruptions.
Firms can find themselves in the position of generating stronger turnover and healthy profits, while still operating with tighter liquidity than expected.
For leadership teams, this is becoming an increasingly important distinction. Profitability may indicate long-term business health, but cash flow determines how confidently a firm can continue to invest, recruit and grow.
Strategic risks of ignoring cash flow pressures
It might seem the easiest solution to simply ignore cash flow pressures. But in doing so, cash flow management becomes just as much a leadership issue as it is a finance one.
By not proactively addressing cash flow gaps, accountancy firms may face:
- Delays in technology upgrades
- Slower recruitment and retention planning
- Reduced ability to pursue acquisitions
- Reactive decision making replacing long-term strategic thinking
- Increased operational burden across finance and leadership teams
While a firm may appear strong on paper, behind the scenes they may be firefighting to maintain liquidity, or operating with limited flexibility for future growth.
Planning for long-term growth
For mid-size accountancy firms looking to grow, they need to look further than just the revenue figures alone. Sustainable growth comes from having a clearer view over how these investment decisions impact working capital, operational flexibility and long-term financial resilience.
Firms in the strongest position are proactively incorporating cash flow into their planning, rather than reacting to it once the pressure arrives.
Improve cash flow forecasting
As firms grow, forecasting becomes more important – and more complex.
Leadership teams should be reviewing:
- Hiring plans against projected utilisation and revenue timelines
- The short-term cash impact of acquisitions or expansion activity
- Seasonal fluctuations around tax deadlines and year-end workloads
- Working capital performance alongside profitability metrics
A firm may be profitable overall, but still experience periods of restricted liquidity if too much cash is tied up in WIP, debtors or ongoing investment activity.
More accurate forecasting can help firms identify pressure points earlier and make growth decisions with greater confidence.
Review billing and debtor processes
Many accountancy firms still lose valuable working capital through inefficient billing cycles.
Practical improvements may include reducing delays between work completion and invoicing, using automated reminders to follow up on clients, or introducing stricter credit control processes.
Implementing staged payment structures for larger projects can also make payments more manageable for clients.
Even relatively small improvements in debtor days can have a meaningful impact on available cash reserves, particularly for growing firms with larger payroll commitments.
Use finance strategically to support growth
Growth often requires firms to invest before revenue catches up.
Rather than relying entirely on existing cash reserves, many firms are now using finance more strategically to spread the cost of investment and protect day-to-day working capital.
This can help firms move forward without restricting operational flexibility elsewhere in the business.
Working with a professional practice finance provider who specialises in solutions for the accountancy sector, can help finance and leadership teams to structure funding around both growth investments but also other financial obligations throughout the year, such as year-end and tax seasons.
Build long-term financial resilience
Sustainable growth depends on maintaining enough liquidity to navigate both opportunity and uncertainty.
For many firms, that means:
- Maintaining stronger cash buffers
- Planning investment over longer timelines
- Viewing finance as a tool for stability and growth, rather than simply a short-term solution
In a market where firms are under pressure to modernise, recruit and scale simultaneously, financial resilience is becoming just as important as profitability itself.
Firms with stronger liquidity buffers and clearer long-term planning are generally in a much better position to keep growing when market conditions tighten.
In summary: Profitability doesn’t reveal the full financial picture
The ICAEW’s report indicates that mid-sized accountancy firms are evolving fast. While investment in talent, technology and growth is essential, there are costs not initially accounted for that can create financial pressures before success is measurable.
That’s why profitability alone no longer tells the full story.
Knowing these growth costs upfront, planning ahead early and managing cash flow alongside profitability, will put accountancy firms in a stronger position to scale sustainably and respond to market change.
Ahead of your next investment, assess whether your existing cash flow structure supports your long-term growth plans.