10 Payroll Tips for Streamlined UK Compliance

Payroll is one of the most compliance-heavy areas of running a UK business. Getting it wrong can result in penalties from HMRC, unhappy employees, and significant administrative headaches. Whether you run payroll for a handful of staff or hundreds, these ten tips will help you stay compliant, save time, and avoid common pitfalls.

1. Understand Real Time Information (RTI)

Since April 2013, all UK employers have been required to report payroll information to HMRC in real time using the Real Time Information (RTI) system. This means you must submit a Full Payment Submission (FPS) to HMRC on or before each payday, detailing every employee's pay, tax, National Insurance contributions, and deductions.

If you have no payments to report in a tax month, you must submit an Employer Payment Summary (EPS) by the 19th of the following month to tell HMRC that no payments were made. Failure to submit RTI on time can result in automatic penalties of 100 to 400 pounds per month depending on the number of employees.

Use payroll software that automatically generates and submits FPS and EPS submissions. Manual reporting is error-prone and time-consuming. Modern payroll platforms can submit directly to HMRC with a single click, ensuring deadlines are met consistently.

2. Stay on Top of Pension Auto-Enrolment

Every UK employer must automatically enrol eligible employees into a qualifying workplace pension scheme. Eligible employees are those aged between 22 and state pension age who earn more than 10,000 pounds per year. You must enrol them within their first month of eligible employment and cannot wait until a later date.

Minimum contribution rates are currently 8 per cent of qualifying earnings, of which at least 3 per cent must come from the employer. You must also re-enrol any employees who previously opted out approximately every three years on your re-enrolment date.

Keep a diary of your re-enrolment dates and ensure your payroll system is set up to calculate and deduct pension contributions correctly. Late or incorrect pension contributions can result in compliance notices and fines from The Pensions Regulator.

3. Know Your National Insurance Thresholds

National Insurance contributions (NICs) are calculated based on earnings thresholds that change each tax year. As an employer, you need to be aware of several key thresholds: the Primary Threshold (above which employees pay NICs), the Secondary Threshold (above which employers pay NICs), the Upper Earnings Limit, and the Employment Allowance if applicable.

The Employment Allowance reduces your employer NIC bill by up to 5,000 pounds per year. To qualify, your total employer NIC liability in the previous tax year must have been below 100,000 pounds. Make sure you claim this allowance if eligible — many small businesses miss out on it.

Update your payroll system with the latest thresholds at the start of each tax year (6 April). HMRC publishes the rates and thresholds well in advance, so there is no excuse for using outdated figures.

4. Handle Student Loan Deductions Correctly

If an employee has a student loan, you may receive a Start Notice (SL1) from HMRC or the employee may indicate their student loan on their starter checklist. You are responsible for deducting repayments through payroll based on the correct repayment plan and threshold.

There are currently five student loan plan types (Plan 1, Plan 2, Plan 4, Plan 5, and Postgraduate Loan), each with different repayment thresholds and rates. Applying the wrong plan type will result in incorrect deductions and potential issues for the employee. Verify the plan type when you receive a new starter checklist and update your payroll system accordingly.

Student loan deductions must be included in your RTI submissions. Your payroll software should calculate these automatically once the plan type and start date are configured correctly.

5. Calculate Statutory Pay Correctly

Employers are required to pay various forms of statutory pay including Statutory Sick Pay (SSP), Statutory Maternity Pay (SMP), Statutory Paternity Pay (SPP), Statutory Adoption Pay (SAP), Statutory Shared Parental Pay (ShPP), and Statutory Parental Bereavement Pay (SPBP).

Each type of statutory pay has its own qualifying conditions, rates, and duration. For example, SSP is paid from the fourth qualifying day of sickness at a flat weekly rate, while SMP is paid for up to 39 weeks at 90 per cent of average weekly earnings for the first six weeks followed by the flat rate or 90 per cent of earnings (whichever is lower) for the remaining 33 weeks.

Calculating statutory pay manually is complex and error-prone. Use payroll software that automates these calculations and ensure you keep records of absence dates, medical certificates, and notifications from employees. You can recover some statutory payments from HMRC — small employers can recover 103 per cent of SMP through Small Employers' Relief.

6. Issue P45s and P60s on Time

When an employee leaves your employment, you must issue them with a P45 showing their total pay and tax deducted in the current tax year. The P45 must be provided on or very shortly after their last day. There are four parts — Part 1 is sent to HMRC (automatically through RTI), Parts 1A and 2 are given to the employee for their new employer, and Part 3 is given to the employee for their records.

At the end of each tax year (by 31 May), you must issue a P60 to every employee who was on your payroll on 5 April. The P60 summarises their total pay and deductions for the year. P60s can now be provided electronically rather than on paper, which most payroll systems support.

Failure to provide P45s and P60s can result in penalties from HMRC and difficulties for your employees in their future tax affairs.

7. Invest in Good Payroll Software

Good payroll software is not a luxury — it is a necessity. The complexity of UK payroll, with its multiple tax bands, NIC thresholds, student loan plans, pension schemes, and statutory pay calculations, makes manual processing impractical for all but the smallest employers.

Look for software that is HMRC-recognised for RTI submissions, handles pension auto-enrolment calculations, supports all types of statutory pay, generates payslips and year-end forms automatically, and provides a clear audit trail. Cloud-based solutions offer the additional benefit of automatic updates when tax rates and thresholds change.

If payroll is not your core competency, consider outsourcing it to a payroll bureau or using a managed payroll service. The cost is often surprisingly reasonable and eliminates the risk of compliance errors.

8. Understand the Construction Industry Scheme (CIS)

If your business operates in the construction industry, you need to understand the Construction Industry Scheme. Under CIS, contractors must deduct tax at source from payments made to subcontractors who are not registered for gross payment. The standard deduction rate is 20 per cent, but unregistered subcontractors face a higher rate of 30 per cent.

Contractors must verify subcontractors with HMRC before making the first payment, file monthly CIS returns by the 19th of each month, and provide subcontractors with statements showing the deductions made. Failure to comply with CIS requirements can result in significant penalties.

If you are both a contractor and an employer, CIS and payroll interact in complex ways. CIS deductions suffered by a limited company subcontractor can be offset against its PAYE liability. Ensure your payroll and CIS systems are integrated or that your accountant manages both together.

9. Get Director Payroll Right

Directors of limited companies have special rules for National Insurance calculations. Unlike regular employees whose NICs are calculated on a per-pay-period basis, directors' NICs are calculated on a cumulative annual basis. This means the NIC calculation for a director in any given pay period takes into account all their earnings from the start of the tax year.

There is an alternative method where directors' NICs are calculated on the same per-pay-period basis as other employees, with an annual reconciliation at year end. This can result in different NIC amounts being deducted during the year, though the total annual liability should be the same.

Many directors pay themselves a combination of salary and dividends. The salary is typically set at or just below the Primary Threshold to avoid employee NICs while still qualifying for state pension credits. Dividends are not subject to NICs but are taxed at different rates depending on the director's total income. Your accountant can advise on the most tax-efficient split for your circumstances.

10. Prepare for Year-End Submissions

The payroll tax year runs from 6 April to 5 April. At year end, you need to submit a final FPS for the last pay period of the year marked as the final submission, file an EPS if you need to report any year-end adjustments such as recovery of statutory payments, and issue P60s to all employees on your payroll as at 5 April.

Start preparing for year end in March. Check that all employee details are correct, reconcile your payroll records with HMRC's figures using the Basic PAYE Tools or your payroll software's HMRC reconciliation feature, and resolve any discrepancies before the final submission. Leaving year-end tasks until the last minute increases the risk of errors and penalties.

Conclusion

UK payroll compliance is demanding, but it does not have to be overwhelming. By investing in good software, staying up to date with threshold changes, and following these practical tips, you can run payroll confidently and efficiently. If the burden of payroll compliance is taking time away from running your business, consider using a managed payroll service — TaxStats offers payroll from just 5 pounds per payslip, with all RTI submissions, pension processing, and statutory pay calculations handled for you.