National Insurance Increase - What does it mean for my Business?

April 17, 2025

As of 6 April 2025, UK businesses are facing a significant rise in Employer National Insurance Contributions (NICs). The rate is increasing from 13.8% to 15%, and the secondary threshold — the earnings level at which employers start contributing — is dropping from £9,100 to £5,000 per year.

This shift means:

Employers will now pay 15p for every £1 earned above £5,000 by an employee.
A worker earning £20,000 could cost their employer an extra £615 annually in NICs.
According to the Centre for Policy Studies, the changes could cost companies an average of £2,000 more per employee per year.

For a company with 50 employees, this could mean up to £100,000+ in additional NIC costs annually.

Real Cost Impact on UK Businesses

Recent analysis shows:

Employers of low-paid workers will be hit hardest, facing a 45% increase in NICs per staff member.
Those employing higher earners will also see increases upwards of £1,100 per person.
Collectively, UK businesses are expected to shoulder an extra £28 billion in tax burdens due to these adjustments.

This comes at a time when businesses are already grappling with rising overheads, inflation, and compliance complexities.

How Ratiobox Can Help You Offset These Rising Costs

At Ratiobox, we specialise in outsourced accounting, payroll, and finance process automation — helping UK SMEs streamline their operations and cut overheads.

Here’s how outsourcing with Ratiobox can directly offset NIC-related cost increases:

1. Reduce Internal Headcount Costs

Ratiobox handles your bookkeeping, accounts, payroll, and reporting — eliminating the need for full-time in-house finance staff. You save on:

Employer NICs
Pension contributions
Holiday pay
Training and recruitment

2. Improve Accuracy & Compliance

With tax and NIC rules shifting, financial errors can cost thousands. Ratiobox keeps you fully compliant with HMRC, avoids penalties, and ensures you’re taking advantage of any applicable schemes (e.g., NIC employment allowance).

3. Scalable, Fixed Monthly Pricing

We offer transparent, fixed monthly packages that grow with your business — a fraction of the cost of maintaining an in-house finance team.

4. Reclaim Time & Focus

Free your internal team from finance admin so they can focus on what matters: growing your business, not managing spreadsheets.

Quick Example Highlighting Salary Cost of an In-House Bookkeeper

Base Salary	£35,000
Employer National Insurance (15%)	£4,500
Employer Pension Contributions (3%)	£800
Training & CPD	£1,000
Holiday & Sick Pay Cover	£2,000 (average cost for small teams)
Total Annual Cost	£45,000+

In Summary

The 2025 NIC rise is a wake-up call for UK businesses. While the increase is outside your control, how you manage your costs isn’t.

By partnering with Ratiobox, you can:

Mitigate rising NIC costs
Avoid payroll and tax errors
Simplify your finance operations
Focus on growth