United Kingdom Payroll: PAYE, NI, and Compliance

How is the payroll calculated in the UK?

Payroll tax in the UK is collected through the Pay As You Earn (PAYE) system.

Simply put, it is your obligation as an employer to figure out how much tax your employees owe, deduct it from their salary, and send it to Her Majesty’s Revenue and Customs (HMRC).

It is done every time you pay your employees, which is usually monthly for most organizations, and the procedure is the same for salaried and hourly staff.

It is critical that you, as an employer, maintain your accounts up to date. You must send your most recent pay deductions to HMRC by the 19th of every month if you pay by post or by the 22nd if you pay online.

It can be pretty challenging to calculate all of your employees’ deductions. You can use the calculator provided by HMRC for this purpose. However, its real purpose is to double-check the payable amount rather than calculate payments from scratch. 

You must submit your final report for the year to HMRC and provide Form 60 to each of your employees. The form summarizes their annual pay and deductions before the end of the UK payroll tax year (5th April). You must also notify HMRC of any expenses or benefits for your year-end filing.

The UK’s Real Time Information (RTI) system is used to report UK payroll data. Employers must send their payroll data to HMRC online under RTI.

Payroll data must be provided before or during salary payments under RTI. The data cannot be overwritten or redone once it has been submitted.

Employers must notify HMRC if a new employee is hired or if an employee’s circumstances change as part of payroll reporting.

Important elements of the salary structure in the UK

A typical payslip in the UK must include the following key components to ensure employee understanding, transparency, and compliance:

• Gross pay: The total earnings — including base salary, commissions, bonuses, overtime, and any allowances, such as shift differentials or travel — before any deductions, like tax or National Insurance fee.
• Net pay: The amount employees take home after all the deductions.
• Variable deductions: These deductions vary every payday and often include:
  • Income tax: Based on the employee’s HMRC-issued tax code that reflects taxable income bands and personal allowances, employers deduct income tax. You must accurately apply the tax code to prevent under – or overpayment.
    • National Insurance Contributions (NIC): Contributions from employers and employees are calculated on earnings above a specific threshold, funding state benefits, like pensions, healthcare, and unemployment support. You must continuously monitor and accurately apply the NIC rates and thresholds.
  • Pension contributions: Minimum contributions to the pension schemes by both employers and employees are mandatory under UK auto-enrolment rules.
  • Student loan repayment: This applies when earnings exceed a certain level, and the repayment amount depends on the loan type.
  • Court-ordered deduction: For obligations such as child maintenance and fines.
• Fixed deductions: These are fixed monthly deductions, such as union fees, salary sacrifice schemes like childcare vouchers and cycle-to-work, and other agreed voluntary deductions.
• Incentives: These are additional payments — overtime pay, tips, commissions, and performance bonuses — that the employer credits to the employee in the latter’s gross pay amount. Since these incentives are subject to income tax and NIC, you must have clear policies on calculation and payout to ensure payroll accuracy.

Apart from the above elements, there are a few more employee-specific data points every employer must include in the payslip:

• Accurate employee information, like tax code and national insurance number, to prevent payment errors
• Clear pay rates for both annual and hourly wages to avoid unnecessary misunderstanding and maintain employee trust
• Benefits in kind, except for the limited costs of accommodation provided as part of the job, and non-performance-related allowances such as travel
• Tips, service charges, gratuities, and cover charges
• Repayments of expenses
• Loans by the employer, advance wages, and employer pension payments

Difference between salary and wages in the UK

To ensure a compliant and comprehensive salary structure, you must understand the difference between salary and wages.

Salary is a fixed, regular payment, usually expressed annually and paid consistently every month, irrespective of hours worked. This model enables payroll stability and simplified budgeting, and is suitable for predictable schedules, like office-based employees.

Salaried employees often receive broader benefits, including healthcare, bonuses, and pensions, in addition to predictable income, enabling retention and financial planning. They may be eligible or exempt from overtime pay depending on contract terms and National Minimum Wage (NMW) rules.

Wages are hourly-based payments and vary directly with hours worked. Most common in sectors like hospitality, this model requires careful tracking and forecasting to accurately compensate wage earners.

Hourly workers have fewer benefits but greater pay flexibility. They typically qualify for overtime pay beyond defined weekly hours, often compensated at 1.5 times the regular rate.

Retirement planning and pension options in the UK

Retirement planning is a crucial aspect of employee benefits in the UK, ensuring financial security for employees post-employment. Based on your employees’ needs, you can offer the following pension options:

Workplace pension: Mandated under auto-enrolment, this is the most common pension scheme you can set up. This requires mandatory contributions from both employee and employer under auto-enrolment, and eligible employees are automatically enrolled unless they opt out.

Personal pension: These pensions operate independently of the employer, offering employees freedom to customize their contributions and investment strategies to supplement their workplace pension.

With a clear understanding of the salary structure, benefit components, and distinction between salary and wages, you can establish an efficient and compliant payroll process for your company.

How to set up the UK payroll process?

Setting up the payroll process in the UK is a straightforward process. If you have an internal team managing payroll, they are advised to follow these steps:

1. Register as an employer in the HMRC portal and get log-in details for PAYE online. PAYE (Pay As You Earn) is HMRC’s method of collecting income tax and National Insurance contributions from employees from the date of employment. It can take up to 5 working days before you receive your employer’s PAYE reference number.
2. Choose your preferred payroll software for calculating employees’ pay, deductions, and other details.
3. Report the details to HMRC before the first payday.
4. Pay the tax and National Insurance to the HMRC

You may either set up and run payroll UK yourself using payroll software or hire a payroll service for it once you’ve registered as an employer. Partnering with an external team like Multiplier will help streamline a lot of the payroll processing tasks, saving you time and resources.