How to build a scalable payroll practice for your firm

When you’re looking to grow your accounting firm – but need to avoid overloading your team or compromising client experience – expanding your payroll practice can be a smart move.

Many accountants still see payroll management as a time-consuming, low-margin task. In reality, with the right outsourcing, payroll software, processes, and systems in place, it can become a valuable, scalable service that strengthens client relationships and adds consistent revenue.

Here’s how to start building your payroll services in a way that works for both your team and your clients.

1. Dedicate time to scoping payroll as a service

For many of your clients, payroll isn’t just another admin job – it’s the beating heart of their business. Paying employees correctly and on time, meeting legal requirements, and keeping up with legislation updates are critical to maintaining trust and morale.

That’s why payroll presents such a strong opportunity for accountants. It’s essential, repeatable, and with the right setup, it can deliver real payroll benefits: for both your practice and your clients.

Before you add payroll management to your service list, take the time to properly scope it out:

• What would it mean for profitability if every client outsourced payroll to you?
• How many payrolls could your team realistically process each month?
• Do you have the right systems, procedures, and payroll software in place to ensure accuracy and compliance?

The key is to find a balance between service quality and resource efficiency. You might choose to automate parts of the payroll process, or even use white label payroll partners to support you as you scale (more on that later).

By planning properly, you’ll be able to save time, reduce costs, and create a profitable payroll arm that complements your accounting software and bookkeeping services.

2. Get set up to handle multiple payroll clients

If you’re going to offer payroll services as a dedicated line, it’s vital to be set up to work efficiently across multiple clients. That means having a clearly documented set of payroll procedures and consistent processes for every employer you manage.

Outline each step – from collecting employee data and confirming deductions, to processing payslips, auto enrolment, and statutory pay – so nothing is missed.

Once you’ve defined your payroll procedures, it’s time to select your payroll software. Automation becomes your best friend, and the right cloud payroll software will allow you to:

• Process payroll in real time with automatic tax and National Insurance calculations
• Handle FPS and EPS submissions directly to HMRC
• Manage PAYE, auto enrolment, and statutory pay in one place
• Save time with bulk uploads, digital approvals, and error checking
• Produce reports and audit trails for compliance and client transparency.

Cloud-based tools like Capium Payroll software combine these powerful features into one intuitive system, helping accountants streamline their work while maintaining accuracy and control.

You’ll also benefit from integrations with other accounting software, ensuring your payroll data and bookkeeping remain in sync throughout the tax year.

3. Consider outsourcing or white-labelling payroll

If resources are tight, or you’d rather prioritise higher-value advisory work, consider partnering with external payroll bureaus or outsourcing providers.

Modern white label payroll solutions let you maintain your client relationships while offloading repetitive payroll tasks. It’s a smart way to scale without expanding headcount.

Of course, there are considerations – such as consistency of service, data security, and compliance with UK regulations – but if managed carefully, outsourcing can offer genuine flexibility.

You might, for example, handle smaller payroll in-house while outsourcing complex monthly or contractor-heavy clients. Just ensure your finance partner works under your same PAYE scheme reference and that your firm retains control over final submissions and audit responsibilities.

4. Help clients understand the benefits of outsourcing payroll

Your clients might not realise how much value there is in outsourcing payroll management to a trusted accountant. Some business owners believe it’s a more cost-effective solution to manage payroll internally – until they experience errors, missed payslips, or late payments.

Others worry about losing control or visibility. As their advisor, you can demonstrate how outsourcing through your firm actually increases transparency.

For example:

• Provide clients with secure access to online portals so they can review and approve payroll reports before submission
• Offer summaries of employee pay, deductions, and tax liabilities so they stay informed
• Highlight that outsourced payroll services ensure compliance with constantly changing legislation and HMRC rules – including auto enrolment, National Insurance, and employment regulations.

By communicating the benefits clearly, you can turn payroll from a reactive task into a proactive service that saves clients time, reduces errors, and keeps their employees happy.

5. Promote your payroll practice

Once your payroll practice is ready to go, make sure people know about it.

Start with your existing clients – many won’t even realise you offer payroll solutions. A quick email or a conversation during their next review meeting could be enough to prompt them to switch. If you’ve developed a retainer package that bundles payroll, bookkeeping, and accounting, make that part of your pitch.

Next, make it visible to new prospects. Add your payroll services to your website, clearly outlining your key features – such as payroll software, automation, compliance support, and integration with other accounting software.

Optimise your content for search engines (using phrases like “UK payroll management” and “cloud payroll software”) so that businesses searching for payroll support find you easily.

And don’t forget to showcase your efficiency. Demonstrate how your processes and software help you save time, ensure compliance, and deliver an accurate, professional service every month.

6. Keep evolving your payroll offering

Building a sustainable payroll practice doesn’t stop once it’s up and running. Review your payroll processes, software, and client uptake regularly. Keep an eye on new legislation updates and changing HMRC requirements to stay ahead of the curve.

Investing in modern payroll software means your firm can respond quickly to change – whether that’s new tax rules, updated National Insurance rates, or enhancements to auto enrolment.

With Capium, you’ll have everything you need to process payroll securely and efficiently for multiple clients. The system automates routine tasks, simplifies deductions, and keeps you compliant with every tax year – all while freeing up time to focus on more strategic client work.

Grow your payroll practice with Capium

At Capium, we help accountants and payroll specialists across the UK streamline their payroll management with our all-in-one cloud payroll software.

Our platform lets you:

• Manage and process payroll for multiple clients
• Handle auto enrolment, PAYE, and statutory pay with ease
• Stay on top of legislation updates and compliance
• Provide secure client access for transparency and control
• Generate accurate reports and payslips automatically.

Whether you’re starting from scratch or scaling an existing payroll bureau, Capium gives you the features, flexibility, and confidence to grow.

Book a demo today and discover how Capium can help you create, manage, and grow your payroll services – without adding unnecessary workload to your team.