Fresh analysis suggests the government’s proposed £2,000 cap on National Insurance relief for pension contributions could disproportionately affect middle-income workers, despite being framed as a measure targeting high earners.
Research from accounting firm Bishop Fleming indicates that the structure of the UK’s National Insurance system creates a “middle-income trap,” where employees earning between £35,000 and £50,270 face significantly higher effective tax rates on pension contributions above the cap than those on much higher salaries.
According to the analysis, workers in this bracket could incur an 8% National Insurance charge on contributions exceeding £2,000, compared with just 2% for employees earning above £125,000. The result could penalise professions such as nurses, teachers, and mid-level managers more heavily than top earners, potentially discouraging additional retirement savings.
The proposed changes also affect salary sacrifice schemes, long used by employers to increase pension contributions by sharing National Insurance savings with staff. Under the new rules, employers would face a 15% National Insurance charge on contributions above the cap, reducing the financial incentive to offer “top-up” contributions. Experts warn that many companies may scale back or remove these benefits entirely.
Combined with the employee charge, the reforms create what has been described as a “23% efficiency cliff” for affected workers, diminishing the benefits of contributing above the £2,000 threshold. While the government has said most employees will remain unaffected because their contributions fall below the cap, analysis suggests the impact could be broader.
Data from the Office for Budget Responsibility shows that employers are likely to pass a portion of the extra costs onto employees through lower wage growth or reduced benefits, meaning even workers below the cap could feel the effects indirectly. Small and medium-sized enterprises may face particular pressure, as rising labour costs and additional pension charges force tough choices around pay, hiring, and benefits.
Experts caution that reducing incentives for pension saving could have long-term consequences for retirement outcomes, particularly for middle-income workers already under strain from rising living costs. Weakening salary sacrifice schemes and increasing the cost of contributions may discourage participation at a time when policymakers have urged individuals to build financial resilience for retirement.
The £2,000 National Insurance cap is expected to remain a point of contention as details are debated in parliament. While the government aims to rebalance tax relief and raise revenue, critics argue the policy could unintentionally shift the burden onto middle earners, reducing incentives to save and reshaping the UK pension landscape.
