By: HUB’s EB Global Benefits Team

WHAT IS IT ABOUT?

Salary sacrifice (also known as salary exchange) has long been one of the most tax-efficient ways for employees to contribute to a pension in the United Kingdom. By exchanging part of salary for a pension contribution, both the employee and employer save on National Insurance Contributions (NICs), while employees also continue to benefit from tax-free pension saving (within annual and lifetime allowances). For many organizations, this has become a core component of reward strategy, lowering payroll costs while boosting take-home pension value for employees.

However, following an announcement by the United Kingdom (UK) government, this structure will be undergoing a notable change from April 2029. From this date, the amount that can be contributed through salary sacrifice without NICs being payable will be capped at £ 2,000 per year for the employee element of pension contributions. Any amount that employees sacrifice above this threshold will be subject to both employer and employee NICs.

This does not mean salary sacrifice is being removed, in fact, the UK government has confirmed that contributions via salary sacrifice can still exceed £ 2,000, and contributions will continue to receive full Income Tax relief. The reform simply restricts the NIC advantage.

The policy’s intent appears to be balancing the government cost of the tax relief while maintaining the underlying pension incentive structure. Employers should note that the change introduces a long transition period, with no adjustment required until April 2029, and employers currently using salary sacrifice retain the full NIC benefit until then. This provides time for modelled impact assessment, payroll system planning, and strategic review of benefit cost structures.

For employers contributing above-statutory minimum levels or operating matched employer contribution arrangements, the NIC change may particularly influence future budgeting and salary review frameworks. After April 2029, the financial impact will vary significantly by workforce profile. Employees making modest pension contributions may fall within the £ 2,000 NIC-free limit and therefore remain unaffected. Higher earners and those contributing above minimum levels, however, could see incremental monthly NIC deductions. For example:

Someone earning £ 50,000 per year, contributing 4% remains fully NIC-exempt under salary sacrifice.

A higher earner at £100,000 per year, contributing 5% will see NIC applied to the £3,000 excess, estimated at roughly £5 per month based on today’s thresholds.

From the employer perspective, NIC savings will continue, but the maximum available benefit reduces. While there remains potential for up to around £300 per employee annually in NI savings, many employers will experience a higher payroll NIC bill relative to current conditions. Understanding how this filters into cost allocation, funding of benefits, and pension engagement strategies will be key.

Salary sacrifice will remain a valuable planning tool, particularly due to ongoing income tax relief, but the cost-benefit profile is evolving. Over time, we may see employers reassess contribution structures, increase communication to help employees optimize arrangements, or integrate alternative tax-efficient savings vehicles as part of a diversified benefits package.

We will continue to monitor legislative updates and will be able to support employers in modelling cost scenarios, forecasting NI impacts and adapting communication prior to implementation.

IMPACT ON COMPANIES

  • Administrative and compliance burden will increase; employers will need to update payroll systems to reflect the cap, and to monitor and carefully report pension salary-sacrifice contributions.
  • The attractiveness of pension salary-sacrifice schemes as a benefit may decline, which could influence employee retention or benefit-package competitiveness.
  • Where employers currently share their NI savings with staff the reduction in savings may affect the economics of that sharing arrangement - requiring a review of benefit design.

SUGGESTED EMPLOYER ACTION

  • Review your current pension salary-sacrifice scheme: Understand how many employees contribute more than £2,000 per year via salary sacrifice and quantify the likely additional NI cost from April 2029.
  • Update payroll and benefit-administration systems ahead of the change to ensure correct NI calculation and reporting for contributions above the cap.
  • Reassess the attractiveness of pension benefits: Considering that excess contributions lose the NI advantage, explore whether alternative pension-contribution strategies or benefit enhancements might be more appealing.
  • Communicate early and clearly with employees. Inform them of the upcoming change, explain how it may impact take-home pay and pension contributions, and provide guidance on their options.

If you have any questions, please contact your HUB Advisor. View more updates in our Global Benefits Directory.