What Exactly Is an HR Accountant?

An HR accountant is a specialist who handles the financial and compliance side of employing people. They sit at the intersection of human resources and accounting. They are not HR generalists who handle recruitment, disciplinary hearings, or performance reviews. They focus on the numbers: payroll, PAYE, National Insurance, pensions, benefits, and employment taxes.

For UK businesses, an HR accountant is often the person who makes sure your payroll runs correctly, your employees are paid on time, and HMRC receives the right tax and NI. They also handle the paperwork that comes with hiring, paying, and sometimes letting people go.

Most small and growing businesses do not need a full-time HR accountant. They use an external firm like Holloway Davies, who are ICAEW qualified and handle payroll and employment tax as part of a broader service. That is the typical arrangement for a limited company with 1 to 50 employees.

What HR Accountants Actually Do: The Full List

An HR accountant's work breaks down into several clear areas. Here is what you can expect them to handle.

Payroll Processing

This is the core function. The HR accountant runs your payroll each month or each week. They calculate gross pay, deductions for tax and NI, student loan repayments, pension contributions, and net pay. They produce payslips and the FPS (Full Payment Submission) that goes to HMRC each time you run payroll.

They also handle the year-end tasks: issuing P60s to employees, submitting the P35 (employer annual return) if needed, and reconciling the payroll with HMRC records.

For a contractor working through their own limited company, the HR accountant might process a single director salary each month. For a growing business with 20 staff, they handle variable hours, overtime, commission, and statutory payments like sick pay and maternity pay.

PAYE and National Insurance Compliance

Every employer must operate PAYE (Pay As You Earn). The HR accountant ensures you deduct the correct income tax and National Insurance from each employee. They also calculate the employer's NI contribution (currently 13.8% above the secondary threshold of £9,100 for 2025/26).

They handle the tricky bits too: the Employment Allowance (up to £10,500 if eligible), the NIC holiday for certain groups, and the annual reconciliation that HMRC calls an Employer Payment Summary (EPS).

If you are a sole trader with employees, the same rules apply. An HR accountant makes sure you do not accidentally underpay or overpay HMRC. Both cause problems.

Pension Auto-Enrolment

Since 2012, every employer must automatically enrol eligible staff into a workplace pension scheme. The HR accountant handles the assessment of who must be enrolled, the opt-out process, and the ongoing contributions. They also complete the declaration of compliance with The Pensions Regulator every three years.

For a limited company director who is the only employee, auto-enrolment may not apply. But if you hire anyone else, it does. The HR accountant sets up the pension scheme, connects it to the payroll software, and ensures contributions are paid on time.

Benefits in Kind and P11D

If you provide employees with benefits like a company car, private health insurance, gym membership, or interest-free loans above £10,000, you must report them to HMRC on form P11D. The HR accountant calculates the taxable value of each benefit and submits the P11D and P11D(b) (for Class 1A NIC) by 6 July each year.

This is an area where mistakes are common. A director who uses a company car for personal mileage without proper records can end up with a large tax bill. An HR accountant sets up the tracking and reporting so you stay compliant.

Statutory Payments

Employees are entitled to statutory payments when they are sick, on maternity or paternity leave, or adopting. The HR accountant calculates the correct amounts, processes them through payroll, and claims back the relevant portion from HMRC (most employers can reclaim 92% of statutory maternity pay, for example).

They also handle the more complex cases: shared parental leave, adoption pay, and the interaction with contractual benefits.

Hiring and Leavers

When you hire someone, the HR accountant sets them up on the payroll system, collects their starter information (form P46 or a new starter checklist), and ensures the correct tax code is applied. When someone leaves, they process the P45, calculate any final payments including accrued holiday pay, and submit the final FPS to HMRC.

For a contractor ending their engagement through a limited company, the HR accountant makes sure the final director salary and dividend are processed cleanly before the company is closed or the director moves on.

IR35 and Off-Payroll Working

For contractors working through their own limited company, IR35 is a major concern. If you are a contractor and your client is a medium or large business, they decide your IR35 status. If they determine you are inside IR35, your limited company pays deemed employment taxes on the fees you receive.

An HR accountant who understands IR35 can help you structure your payments correctly, complete the Status Determination Statement (SDS) if you are the client, and ensure the correct deductions are made. This is not standard payroll work. It requires specialist knowledge of the off-payroll working rules.

Construction Industry Scheme (CIS)

If you are in construction, the CIS rules affect how you pay subcontractors. The HR accountant handles the monthly CIS300 return, the verification of subcontractors, and the deduction of CIS tax (20% for registered subcontractors, 30% for unregistered). They also ensure you issue the correct CIS statements to each subcontractor.

For a building firm in Birmingham's Jewellery Quarter or a roofing contractor in Manchester's Northern Quarter, CIS compliance is non-negotiable. HMRC checks it closely.

When Does a UK Business Need an HR Accountant?

You need an HR accountant when employing people becomes more complex than running a simple monthly salary for yourself. Here are the specific triggers.

You hire your first employee. The moment you take on anyone beyond yourself, you must register as an employer with HMRC, set up payroll, and operate PAYE. An HR accountant handles this from day one.

You offer benefits. Private medical insurance, a company car, or a health cash plan all create reporting obligations. An HR accountant manages the P11D process.

You have variable hours or shift workers. If your staff work different hours each week, manual payroll calculations become error-prone. Automated payroll through an HR accountant is more reliable.

You are a contractor inside IR35. The tax treatment changes completely. An HR accountant ensures you do not overpay or underpay.

You are scaling up. Growing from 5 to 15 employees introduces complexities around pension auto-enrolment, statutory payments, and holiday pay calculations. An HR accountant keeps it manageable.

You have multiple directors. A husband-and-wife limited company running a café in Bristol's Harbourside often pays both directors a salary. The HR accountant ensures the NI position is optimised and the Employment Allowance is used correctly.

HR Accountant vs. Regular Accountant: What Is the Difference?

A regular accountant handles your company accounts, corporation tax returns, VAT, and year-end filing. An HR accountant specialises in the employment side: payroll, PAYE, NI, pensions, benefits, and employment status.

Many firms, including Holloway Davies, offer both services. You get one point of contact who understands your full financial picture. That is more efficient than using separate firms for accounts and payroll.

For a sole trader, the distinction matters less because you rarely have employees. For a limited company with staff, having an HR accountant within your main accountancy firm saves time and reduces errors.

How Much Does an HR Accountant Cost?

Costs vary by the size of your payroll and the complexity of your needs. For a single director salary run each month, you might pay £30 to £60 per month as part of a broader accountancy package. For a business with 10 employees, expect £100 to £250 per month. For 50 employees, it could be £400 to £800 per month.

Most firms bundle payroll with the core accountancy service. If you already use an accountant for your company accounts, ask them to add payroll. It is usually cheaper than going to a separate payroll bureau.

Some services charge per payslip. Others charge a flat monthly fee. The key is to understand what is included: does the fee cover P11D preparation, pension auto-enrolment, and year-end tasks? Or are those extras?

Software HR Accountants Use

Most HR accountants use cloud-based payroll software. The common ones in the UK are:

  • Xero Payroll - integrated with Xero accounting. Popular for small to medium businesses.
  • FreeAgent Payroll - included with FreeAgent accounting. Common among contractors and small limited companies.
  • BrightPay - standalone payroll software. Used by payroll bureaus and accountants who process multiple clients.
  • Sage 50 Payroll - still common in trade and manufacturing businesses. Integrates with Sage 50 accounting.
  • Iris - used by larger accountancy firms for volume payroll processing.

Your HR accountant will use one of these. You do not need to buy the software yourself. They process the payroll and send you the reports.

Common Mistakes HR Accountants Prevent

Here are the errors we see most often when a business tries to manage payroll without specialist help.

Wrong tax codes. Using an emergency tax code when it should be a cumulative code. This overcharges or undercharges the employee and creates HMRC queries.

Missed pension deadlines. The Pensions Regulator fines employers who miss the auto-enrolment deadline. The fine can be £400 per day for the largest businesses.

Incorrect NI calculations. Employer NI is easy to miscalculate if you have directors with multiple roles or employees who change their hours mid-year.

Late P11D submissions. The deadline is 6 July. Late filing means automatic penalties of £100 per 50 forms per month.

IR35 errors. Treating a contractor as outside IR35 when they should be inside creates a liability for unpaid tax and NI, plus penalties.

CIS errors. Failing to deduct the correct CIS tax from subcontractors leaves you liable for the underpayment.

An HR accountant catches these before they become problems. That is worth the fee alone.

How to Choose an HR Accountant

If you need an HR accountant, look for these qualities.

  • ICAEW or ACCA qualified. This ensures they have the technical training to handle complex employment tax issues.
  • Experience with your sector. Construction, tech, and creative industries each have specific payroll quirks.
  • Cloud-based. Your payroll data should be accessible to you online, not locked in a desktop system.
  • Transparent pricing. No hidden fees for year-end tasks or P11D preparation.
  • Responsive. Payroll has deadlines. Your accountant should reply quickly when something goes wrong.

At Holloway Davies, our ICAEW qualified team handles payroll and employment tax for limited companies, contractors, and sole traders across every sector. We use Xero and FreeAgent for payroll, and we include payroll as part of our core service for most clients.

If you are not sure whether you need an HR accountant, contact us. We will look at your current setup and tell you what is missing.

Final Thoughts

An HR accountant is not a luxury. If you employ people in the UK, you have legal obligations around payroll, tax, NI, pensions, and benefits. Getting them wrong costs you money in penalties and wasted time.

A good HR accountant saves you that time, keeps you compliant, and often finds ways to reduce your employment costs. For a small or growing business, it is one of the best investments you can make.

If your business has employees and you do not have an HR accountant yet, now is the time to fix that. The cost is low. The risk of going without is much higher.