Accountancy efficiency: 5 signs your practice is losing capacity (and how to fix them)

Perhaps the biggest internal hazard facing accountancy efficiency today is a lack of capacity.

If the capacity’s not there, work will feel like an unbearable load. Business development will feel unstable. Your firm will lose to the competition because it’s missing essential services and can’t deliver extra value.

Access to skills is now the single biggest barrier to growth for UK mid-tier accountancy firms. 56% cited the recruitment and retention of qualified staff as a top-three talent challenge. — Source: ICAEW, Evolution of Mid-Tier Accountancy Firms 2025

Quick answer – how to improve efficiency and fix your capacity problem

The five clearest signs a UK accountancy firm is short of capacity are disconnected software, stretched staff, time written off on low-value clients, a culture of manual busywork, and no goal to direct capacity towards. Most firms fix the first three with more efficient systems: an integrated practice management and compliance platform, one dashboard for capacity and WIP, and reporting on realisation and write-offs by client. Once you know where the time is going, outsourcing compliance work can free staff for advisory. At IRIS, we built IRIS Elements to run compliance, workflow and MTD from one client record, and IRIS Firm Management to give firms financial control over fees, WIP and margin.

What this blog on efficiency and capacity covers

This blog covers five warning signs that accounting firm efficiency is dropping and capacity is suffering. I’ve identified these over the years – both as a practitioner and as an advisor helping firms improve operations.

We’ll look at each problem and how to go about improving things:

1. Disconnected systems: should you use integrated or standalone software?
2. Stretched staff: how to see capacity and workload
3. Unprofitable clients: how to cut WIP write-offs and improve realisation
4. Busywork culture: letting software do the work
5. No long-term goal: where freed-up capacity should go

We’ll finish with which IRIS solution fits which type of firm, and answers to common questions.

Let’s start with how disconnected systems affect accountancy efficiency.

1. Disconnected systems: should you choose integrated practice management or standalone tools?

For most UK firms that do their own accounts production and tax, an integrated platform saves the most time, because practice management, compliance and client records stay in sync and nothing is rekeyed between systems.

The more detached your systems are, the longer it takes to get work done. That’s because the apps you use don’t sync information. Instead, data has to be moved around manually or retyped. As a result, there’s a real risk of mistakes entering your work. Meanwhile, staff waste time on tasks beneath their paygrade.

It’s common for firms to have connection failures in their system; it happens over time as practices outgrow tools. A mid-sized firm finds itself using technology suited to its former, smaller self. Any mergers or acquisitions, of course, also bring yet more apps. A small firm, meanwhile, will have its own software clutter – a hastily assembled stack from its start-up days.

The danger is that people get used to the discomfort this brings. Without pausing to assess, a firm will simply carry on making do. They become used to the inefficiency and cost of these ad-hoc tools – they often pay for a lot of overlapping functionality.

31% of UK mid-tier managing partners cite introducing, understanding and keeping up with new technology as a major challenge — second only to recruitment difficulties. None said their firm was “tech savvy” when asked. (Source: ICAEW Evolution of mid-tier firms: tech investment and AI)

Even if a firm does think about making changes, it’s easy to put these improvements off; when you choose new tools, you’ll have to think about redefining workflows and training.

The fix: consolidate your software. Look at your existing tech stack. For example, do you have one vendor supplying tax and accounts software and another practice management? Consider using the same vendor for both. Shared client records mean jobs, deadlines and filings update in one place. However, if you keep a separate bookkeeping app, supplied by a different vendor, do check it connects natively. Our compliance and practice management platform, IRIS Elements, for example, integrates with solutions like Xero and QuickBooks, so client data flows in without re-entry.

The test I’d apply is simple: in how many places does a client’s details live? If the answer is more than one, every change of address, new director or updated figure is a chance for records to drift apart. That’s the principle we built IRIS Elements around. Tax, accounts production, practice management and AML all work from one shared client record, so an update made in one place is live everywhere. We will look at this in more detail later.

“Having everything in one place, with one client record to manage, completely removes the risk of making any mistakes, and is more secure.” Louisa Burton, Louisa Burton Chartered Accountants

Also, pick intuitive digital solutions to cut down on training time. To do that, choose vendors with accountants on their development teams – the software will match how your finance professionals think, making it easier to adopt.

2. Stretched staff: how can you see capacity and workload before people burn out?

Burnout is real, and good data is how accountants can tackle it in their firm. With the right tools, they can see who is working on what, how long jobs are taking against budget, and where overtime is building up. Spreadsheets can’t show that in real time, so most firms only find out a team is overstretched when a deadline slips.

Are there subtle warning signs your staff are starting to feel the pressure? Yes. These include:

• Overtime creep – beyond the moments in the year (like tax season) where you expect a spike
• An increase in sickness rates
• An increase in mistakes (so complaints from clients)
• Missed deadlines

Unfortunately, without resource-tracking tools, you only discover problems when something goes badly wrong, invariably at the worst possible time.

Why? Because nobody likes to admit they are too stretched in accounting. It feels like defeat in a hardworking profession, and the fear is that the boss will think they’re avoiding work.

When it comes to your digital system, then, it must do two things to compensate:

• It must help you to take away meaningless, routine tasks with the help of automation.
• It must help you to keep a non-intrusive eye over who is doing what.

This data should be easy to see. If you’re relying on spreadsheets, that transparency becomes a struggle.

But what is it possible to see if you have the right software? You can view:

• Hours logged against budget for each job
• Work due in the next 30 days, by team member
• Overdue jobs and jobs at risk of missing a filing deadline
• Overtime and utilisation trends, by person

In IRIS Elements, the Practice Home Screen shows task status, upcoming tax and accounts deadlines, self-assessment progress by status, the accounts production queue, and alerts for client risk assessments about to expire.

For growing firms, IRIS Firm Management gives leaders a deeper view of utilisation, recovery and margin, so you can see profit risk, not just workload.

The capacity crunch many firms haven’t budgeted for: MTD for Income Tax

If your team already feels stretched, MTD for Income Tax will make it worse. For every client it applies to, one tax return becomes at least four quarterly updates plus a final declaration. That’s five rounds of chasing, reviewing and confirming (minimum) instead of one.

Here’s what that adds up to, based on IRIS estimates:

Those figures assume the data arrives clean and on schedule. How much of that time you get back depends heavily on your software. The biggest drains are switching between a tax product and separate bridging software, and tracking which clients are in MTD and which are still on self-assessment. We’ll come back to how to remove these obstacles shortly.

MTD for Income Tax started in April 2026 for sole traders and landlords with qualifying income over £50,000, and the threshold drops to £30,000 in April 2027, and £20,000 in April 2028.

With the right digital system, you can maximise existing staff capacity. Then you can decide if you need to employ more staff or use a service like outsourcing. Outsourcing suits tasks accountants didn’t sign up for – such as bookkeeping, payroll, and audits. If they want to focus on advisory, you can use outsourcing to handle compliance work, too. For example, we have teams ready to help with MTD workflows.

Is it cheaper to outsource compliance work or hire?

It depends on how steady the work is. Hiring makes sense when you have year-round volume and time to train someone. Outsourcing tends to be more cost-efficient when work is seasonal, such as the self-assessment peak, or when a vacancy has been open for months. Compare the full cost of a hire (salary, pension, recruitment fees, training and software seats) against a per-job or per-client outsourcing price, and include the partner time currently spent reviewing junior work.

Work practices commonly outsource include bookkeeping, payroll, year-end accounts production, personal tax returns, and MTD quarterly updates. Advisory work, client relationships and final review usually stay in-house.

3. Unprofitable clients: how do you reduce WIP write-offs and improve realisation?

Measure realisation (the share of recorded time you actually bill) by client and by job, and review write-offs monthly instead of at year end. The clients who absorb the most unbilled time become visible, so you can reprice, rescope or let them go before your better clients feel neglected.

Every firm has encountered clients that – unfortunately – shout loudest and pay less. This would be easy to handle if we accountants were not hard-working people-pleasers. As such, we can be prone to prioritising disruptive clients when they clamour for attention. The result is a real risk to capacity that doesn’t bring in money.

Instead, the effort goes unrecorded or becomes written off, and your “better” clients get left aside.

Understandably, your more agreeable, better-paying customers will only tolerate being neglected for so long. Eventually they vote with their feet. If you’re lucky, you’ll find out in an exit interview why they left and act accordingly to stop things worsening.

But nobody wants to fine-tune their firm based on lost business. To avoid this, you need actionable data – a “VIP list” of your best clients. However, the larger your firm, the harder it is to manually gather this information. Most practices can only track their jobs and tasks, not every interaction, because they don’t have the right tools. Here’s what else you need to capture:

• Emails picked up.
• Phone calls.
• Overrunning jobs.
• Written-off time.

If you don’t have that kind of data, the problem remains hidden.

How to calculate your realisation rate

Realisation rate = (fees billed ÷ value of time recorded) × 100

For example, if your team records £250,000 of time in a quarter and you bill £215,000 after write-downs, your realisation rate is 86%.

How IRIS Firm Management helps

We built IRIS Firm Management (IFM) for exactly this problem. It connects time, people and financial outcomes, so growing firms can see where time really goes by client and job, spot what’s going wrong with your figures as it happens, and price work properly to protect margin. IFM sits alongside your compliance and filing software, so those tools stay in place — but it replaces your time and fees module, which is where that financial control comes from.

4. Busywork culture: is your team doing work software could do?

If staff still rekey data, build custom spreadsheets or chase clients by email, that time can usually be automated. In compliance work, the biggest savings tend to come from bookkeeping data flowing straight into accounts production, automated client reminders, and checks that flag anomalies before review. IRIS Elements Tax, for example, includes AI anomaly detection.

85% of chartered accountants surveyed are willing to use AI (Source:Ipsos UK survey for Chartered Accountants Worldwide (2,718 respondents, 48 countries)

So, how can we adopt an AI-savvy and automation-focused mindset? That requires a certain amount of letting go of the past. It’s easy to justify a fee by struggling. It feels like work building custom spreadsheets or retyping data. In reality, however, it’s just needless stress.

I’m a big fan of a football saying: let the ball do the work. You get up the pitch quicker passing the ball than dribbling it yourself. The same applies in practice. If your software can move data, automate a workflow, or surface an answer faster than you can manually, let it. You still did the work. You just did it smarter.

So, encourage that mentality in yourself and others. Park the busywork and spend more time with your clients. Let quality shine. Then, start thinking about how you price your expertise accordingly. That might be for value, not for time.

How IRIS Elements helps you let the ball do the work

One client record, so nothing gets retyped. Tax, accounts production, practice management and AML share the same client data. You work left to right across a series of tabs, and what you enter in one tab populates the next. Personal tax details are pulled straight from HMRC.

Checks as you go, so errors don’t reach review. Elements checks each section as you fill it in and flags anything that doesn’t add up. AI anomaly detection, already used by more than 9,000 practices, compares annual calculations and highlights anything unusual year on year.

Documents into data in minutes. Intelligent tax preparation reads P60s, P11Ds, dividend vouchers and bank statements and turns them into tax data, so staff stop keying figures from PDFs.

MTD and self-assessment in the same place. Remember those 200 to 400 extra hours for 50 MTD clients? Elements manages MTD clients and self-assessment clients in the same solution, with no bridging software to learn or reconcile. You can segment your client list to see who falls under MTD, and the MTD Obligations Tracker shows each client’s quarterly updates and final declaration as sent or due. Elements is HMRC-recognised, and it validates submissions before they go. IRIS Elements has a 98% acceptance rate with HMRC.

Workflow that runs itself. IRIS Elements Practice Management adds a configurable workflow engine, automated email and SMS reminders, Outlook and Companies House integration, and a client portal with e-signatures and client Q&A, so chasing records by email stops being someone’s job.

Onboarding without the paperwork. IRIS Elements AML adds biometric ID checks, KYC assessments, customisable checklists and real-time alerts, all linked to the same client list.

“IRIS Elements is really at the heart of our practice now. It’s one database for all our information, rather than multiple systems for us to update. We’ve removed the risk of error, moving data from one system to another.” Adam Owens FCCA, founder, Power Accountants

Getting started is quicker than most firms expect. Most smaller firms are up and running within a day. Nicola Darroch of Darroch Accountancy moved across from Taxfiler in half a day. Firms already on the IRIS Accountancy Suite can synchronise their data across the two systems. Security is built in, with ISO 27001:2022 certification, encryption in transit and at rest, and multi-factor authentication (MFA) as standard.

5. No long-term goal: where should freed-up capacity go?

Every practice needs a clear focus to drive efficiency. Without it, you can’t prioritise, and if you can’t prioritise, you can’t direct your capacity where it counts. Whatever your accountancy practice’s ambition is, it all needs capacity carved out deliberately. Without a goal shaping those decisions, your team’s time just gets absorbed by whatever happens next.

Unfortunately, many firms don’t have this structure.

Some initiatives feel like targets but are just day-to-day compliance. For example, if your aim this year is to comply with MTD, that’s not really a goal. That’s more of an adjustment to keep your head above water.

Goals, meanwhile, vary in strength. For example, one firm might have a vague goal, such as 10% growth. Another might have something much more concrete – they want to grow from 500 to 1,000 clients in three years. That second goal is much easier to think about and plan for.

Other examples include inorganic growth. For example, you might want to acquire a firm – or be acquired by one. But what type of firm are you focused on, and what is the hoped-for result of such a merger?

Ultimately, your plan should include metrics beyond profit. Success always needs to be measurable, not a tick-box exercise. Useful measures include realisation rate, lock-up days, utilisation by team and the share of revenue from advisory work.

Supporting accountancy efficiency in UK firms

Visit our solutions centre to find out more about our software and services. We can help you work fast, track priorities and make the most of your workforce.

Here are two solutions that provide powerful oversight and next-level planning:

IRIS Elements for cloud-powered, comprehensive compliance and team management. This is a platform that lets you handle tax, accounts production, AML and practice management, all in one place.

IFM Core controls the finances behind your client work. This can help you spot what is wrong with your figures in real-time, at a much deeper level than conventional time and fees solutions.

What is a good realisation rate for a UK accountancy firm?

Most UK mid-tier firms sit between 85% and 92%. Above 92% is strong.

How do I reduce WIP write-offs?

Track time against budget by job, flag overruns while work is still in progress, and review write-offs monthly with a reason (scoping, delivery, or client negotiation). Most leakage comes from pre-bill write-downs and unbilled scope creep, and both can be fixed once they’re visible.

How can I measure the impact of low capacity across my accountancy firm?

Use finance-focused practice management software, like IRIS Firm Management, that shows hours against budget, upcoming deadlines by person and overtime trends on one dashboard. Spreadsheets usually only reveal a problem after a deadline slips.

Should I choose integrated or standalone practice management software to manage my team?

When it comes to team-focused practice management solutions (as opposed to profit-tracking tools) integrated usually wins for firms that do their own accounts production and tax, because client data is entered once.

Is it cheaper to outsource compliance work than to hire?

Often, for seasonal work or roles that are hard to fill – it’s more efficient in that scenario. Compare the full cost of a hire, including recruitment, training and software against a per-job outsourcing price.

Is there one platform that does accounts production, tax and practice management together?

Yes. IRIS Elements runs tax, accounts production, practice management and AML from one shared client record in the cloud, so client details are entered once and stay in sync across every task.

Which software handles MTD for Income Tax and self-assessment clients together?

IRIS Elements manages MTD and self-assessment clients in the same solution, with no separate bridging software. It is HMRC-recognised and includes an MTD Obligations Tracker for each client.

How long does it take to switch to IRIS Elements?

Most smaller firms are up and running within a day. Firms moving from the IRIS Accountancy Suite can synchronise their data between the two systems, and Professional customers get a welcome call walkthrough.