Social security — employer

# United Kingdom Employer Social Security Contributions

Employers in the United Kingdom must pay National Insurance contributions on behalf of their employees. As of April 2024, the secondary threshold for National Insurance Class 1 contributions is £175 per week, or approximately £9,100 annually. Employers pay contributions at 15% on earnings above this threshold, up to the upper earnings limit of £967 per week (approximately £50,270 annually).

National Insurance contributions fund the UK's social security system, including state pensions, unemployment benefits, sickness allowance, and maternity benefits. These mandatory employer contributions are separate from income tax withholding and represent a direct payroll cost. The contribution rate applies to all employees aged 16 and over, with certain exemptions for apprentices under 21 and those in their first year of apprenticeship.

The primary governing legislation is the Social Security Contributions and Benefits Act 1992, administered by His Majesty's Revenue and Customs (HMRC). The Contributions Regulations 2001 provide detailed rules on calculation and payment procedures.

From April 2024, the government increased the secondary threshold from £175 to £175 per week as part of ongoing fiscal policy adjustments. This change reduced the effective National Insurance burden on employers compared to previous years.

Employers must register with HMRC, calculate contributions on each pay period, and remit payments monthly alongside income tax. Accurate payroll records must be maintained, and annual reconciliation occurs through the P35 submission. Failure to pay contributions on time incurs penalties and interest charges. Payroll software typically automates these calculations to ensure compliance with current thresholds and rates.