by Muhammad Shahid Aziz
The UK government’s Autumn Budget 2024 introduced significant changes to employer National Insurance (NI) contributions, set to take effect from April 2025. These changes include a reduction in the NI primary threshold for employers and an increase in the NI rate. These measures are aimed at increasing revenue, but they also have considerable implications for employers across various sectors.
Key Changes from the 2024 Budget
According to the Autumn Budget 2024, the major changes are as follows:
- Threshold Reduction: The secondary threshold for employer NI contributions has been reduced from £9,100 to £5,000 per year. This change means that employers will be required to pay NI contributions for employees earning above £5,000, rather than the previous
£9,100 limit.
- Rate Increase: The employer’s NI contribution rate has been increased from 13.8% to 15%. This applies to Class 1, Class 1A, and Class 1B contributions, making employment costs higher for businesses, particularly those with mid- to high-salary employees.
- Employment Allowance Expansion: To help offset these increased costs, the Employment Allowance has been increased from £5,000 to £10,500. This provides relief to smaller businesses, allowing them to reduce their NI liabilities by a larger amount if they meet eligibility criteria.
Date of Employer NI Increase
The changes to the employer National Insurance contributions, including the rate increase from 13.8% to 15% and the reduction of the primary threshold from £9,100 to £5,000, will take effect from 6 April 2025. Employers will need to prepare for these adjustments in their payroll calculations starting from this date to comply with the new regulations announced in the Autumn Budget 2024.
Impact Analysis with Salary Examples
To illustrate the impact of these changes, let’s consider two employees with different salary levels — one earning £25,000 annually and another earning £55,000 annually.
| Details | Pre-Change (2024) | Post-Change (2025) | Impact |
| Employer NI Rate | 13.8% | 15% | Increased by 1.2 percentage points |
| Employer NI Primary Threshold | £9,100 | £5,000 | Lowered by £4,100 |
| Employment Allowance | £5,000 | £10,500 | Increased by £5,500 |
| Employee A Annual Salary | £25,000 | £25,000 | – |
| NI Contribution Calculation | 13.8% of (£25,000 –
£9,100) |
15% of (£25,000 –
£5,000) |
– |
| Employer NI Contribution (Employee A) | £2,194.20 | £3,000 | Increase of £805.80 |
| Employee B Annual Salary | £55,000 | £55,000 | – |
| NI Contribution Calculation | 13.8% of (£55,000 –
£9,100) |
15% of (£55,000 –
£5,000) |
– |
| Employer NI Contribution (Employee B) | £6,344.60 | £7,500 | Increase of
£1,155.40 |
Summary of Impact on Employer Costs
| Salary Level | Pre-Change Employer NI Contribution | Post-Change Employer NI Contribution | Increase in Cost |
| £25,000 | £2,194.20 | £3,000 | £805.80 |
| £55,000 | £6,344.60 | £7,500 | £1,155.40 |
Analysis of the Impact on Employers
- Increased Payroll Costs:
- For an employee earning £25,000, the employer will now incur an additional cost of
£805.80 per year in NI contributions due to the changes.
- For an employee earning £55,000, the increase is even more significant, with an additional annual cost of £1,155.40.
- Budgetary Implications:
- A small business with 10 employees, each earning an average salary of £25,000, would face an increased total NI cost of approximately £8,058 annually.
- A larger company with 100 employees earning an average of £55,000 would see a rise in costs by around £115,540 per year, impacting overall payroll budgets considerably.
- Strategic Considerations:
- Hiring Decisions: Employers may need to rethink hiring plans or adjust salary increases to accommodate higher NI contributions.
- Cost Mitigation: Businesses might explore strategies to control these increased costs, such as leveraging the expanded Employment Allowance, investing in automation, or optimizing their workforce size.
Conclusion
The changes to employer National Insurance contributions announced in the 2024 Budget are set to increase employment costs for businesses, particularly affecting those with
higher-wage employees. With the reduction in the primary threshold and the increase in the NI rate, employers need to account for these adjustments in their financial planning.
However, the rise in the Employment Allowance offers some relief for smaller employers, potentially offsetting a portion of the additional costs.
Employers should review their payroll budgets and consider strategic adjustments to navigate these changes effectively and maintain financial stability.