How do accounting practices manage staff leave, holidays, and capacity during tax season?

How do accounting practices manage staff leave, holidays, and capacity during tax season? During peak filing periods, nearly half of accounting staff regularly work 51 to 60 hours per week, with a further 19% hitting 61 to 70 hours. The core issue is that capacity management involves three variables that most practices track separately.

These are:

• Upcoming client work

• Staff availability

• Planned leave

When those three things live in different systems, the first sign of a problem is usually a missed deadline or a stressed team member, by which point it’s already too late to fix cleanly.

For firms, the pressure usually happens around two yearly windows: 31st of January for self-assessment, and the March/April period for accounts and corporation tax. Many staff book leave around school holidays and in the summer, which means you’ve got upcoming collisions for almost every season.

Unless you plan against it.

What does good capacity planning actually look like in a practice?

Good capacity planning is less complicated than it sounds. It comes down to three things:

1. Knowing what work is due and when

2. Knowing who’s available to do it

3. Making sure those two pieces of information are visible together and not siloed across separate systems

In practice, that means:

• A forward-looking view of client deadlines (mapped at least 90 days out)

• Leave and holiday requests visible alongside that deadline calendar

• A clear process for flagging when a deadline and a planned absence are going to collide

• A consistent, transparent system for approving or declining leave during peak windows

Practices that try to manage this across a combination of email, spreadsheets, and disconnected HR tools consistently struggle to get clarity. For a deeper look at how practice management software addresses this problem, see our post on how AI is transforming practice management software for UK accounting firms.

How should practices handle holiday requests during January and March?

Most practices need some form of restricted leave policy for their busiest filing windows. That doesn’t mean blanket bans, but it does mean setting clear expectations well in advance and building the team’s holiday planning around the work calendar (not the other way round).

A sensible approach is to share the practice’s peak period calendar with the whole team at the start of the year. Set out which windows are restricted and which aren’t, and ask for leave requests to be submitted earlier than before.

The harder problem is unplanned absence. If someone is off sick during peak filing season, most small practices don’t have the bench capacity to absorb it. This is why workflow visibility matters. If you can see exactly where each piece of client work is and who owns it, you can redistribute quickly. Without that visibility, an unplanned absence during peak season becomes a week of lost ground.

Can software help with practice capacity management?

Yes, with the right expectations. Software doesn’t solve the underlying capacity problem, but it removes the visibility gap that makes capacity problems hard to manage. BrightManager by Bright gives practice principals a live view of the entire client portfolio, including upcoming deadlines, task ownership, workflow progress, and team workload, all in one place. When a team member takes approved leave or calls in sick, you can see immediately which deadlines are at risk before anything slips.

What’s the real cost of getting capacity management wrong?

Practices that mishandle this pay for it twice. Once during the season, in overtime costs and errors. And again afterwards, in resignations. The AICPA estimates roughly 12% of accounting staff leave after every tax season. Typically, it’s those who felt the most stretched and least supported. Replacing an experienced accountant costs between £25,000 and £45,000 in recruitment, induction, and lost productivity.

The practices that retain good staff are almost always the ones that take capacity planning seriously. That means forecasting workload properly, restricting leave fairly and transparently, and giving both staff and principals the visibility they need to manage pressure before it becomes burnout.

How does BrightManager by Bright compare to alternatives for practice capacity management?

The main alternatives in this space are Karbon, TaxDome, and Senta. Karbon is well-regarded for its email integration and workflow visibility, and has a loyal following across the UK and Ireland. TaxDome is popular with smaller firms for its all-in-one client portal and document management functionality. Senta offers straightforward workflow management suited to smaller practices.

BrightManager by Bright is purpose-built for UK and Irish firms and integrates directly with BrightPropose, BrightTax and BrightAccountsProduction. That native integration means client details are synced up across these platforms, and any changes made in one will automatically apply to the other. That way, you can be sure your client data is accurate at all times.

BrightManager by Bright is a practice management software built for UK and Irish accounting practices that need a clear view of workload, deadlines, and team capacity all year round.

See how it can fit into your practice and better manage your staff capacity today.

This content may have been developed with the assistance of AI tools. Content is reviewed by a member of the Bright team before publication. Guidance on legislation can be obtained from your industry body.