Posted July 31, 2026

The True Cost of Employing Staff: What Every Business Owner Should Calculate

For most growing businesses, people are the largest investment they make. Whether you’re hiring your first employee or expanding an established team, it’s important to understand that the true cost of employing someone is far more than their basic salary.

We often speak to business owners who budget for a £35,000 employee, only to discover that the actual cost to the business is closer to £45,000–£50,000 once all the associated expenses are taken into account. Understanding the full cost of recruitment can help you make better decisions, improve pricing and ensure growth remains profitable.

Salary Is Only the Starting Point!

When considering a new hire, the first figure most business owners focus on is salary. However, this is just one component of the total employment cost, on top of salary, employers need to factor in National Insurance contributions, pension costs, holiday pay, training and a range of additional expenses that vary depending on the type of business. Looking at salary in isolation can lead to overly optimistic budgets and unexpected pressure on profitability.

Employer’s National Insurance

One of the largest additional costs is Employer’s National Insurance. While it is easy to overlook during recruitment discussions, it can add thousands of pounds annually to the cost of an employee, it is paid at a rate of 15% on earnings above £5,000.

Pension Contributions

Employers are required to contribute to a workplace pension scheme eligible employees under auto-enrolment. While individual contributions may appear modest, the overall cost becomes more significant as headcount grows. For businesses with several employees, pension contributions can represent a meaningful annual expense that should be built into recruitment forecasts.

Training and Development

There may be direct costs such as courses, professional subscriptions and qualifications, but there are also less obvious costs. Existing team members often spend time training and supporting new recruits, reducing their own productivity in the short term.

The Additional Costs Many Businesses Overlook

Beyond payroll costs, new employees often create additional expenditure elsewhere in the business.

For professional and service-based firms, this can include:

• Software licences
• CRM systems
• IT equipment
• Mobile phones
• Cyber security and data storage costs

For a business in the trade sector, the costs can be even more significant.

For example a new engineer may require:

• A van
• Tools and equipment
• Branded workwear
• Fuel cards
• Insurance cover
• Health and safety equipment

It is not uncommon for the initial investment in a new member of a trades team to run into thousands of pounds before they complete their first chargeable hour.

Think About Revenue, Not Just Cost

The key question is not simply “How much will this employee cost?” but “What return will they generate?”

A £45,000 employee does not need to generate £45,000 of revenue. They need to generate enough income to cover their employment costs, contribute towards overheads and produce a profit for the business! This is why tracking metrics such as revenue per employee and gross profit per employee can be so valuable. As a business grows, these metrics help owners understand whether recruitment is genuinely improving profitability or simply increasing turnover and costs at the same time.

Before Recruiting, Ask Yourself These Questions

• What will the total annual cost actually be?
• Are there additional software, equipment or vehicle costs?
• How long before they become fully productive?
• Will they generate additional revenue or improve efficiency?
• Is recruitment the best solution, or could processes be improved first?

Taking a broader view often leads to better recruitment decisions and fewer surprises later.

Recruitment is an Investment

Good people are often the key to business growth. However, successful recruitment requires a clear understanding of both the costs and the expected return. Businesses that understand their true employment costs are typically better at pricing, forecasting cash flow and achieving sustainable growth.

At Whitesides Chartered Accountants, we help business owners understand the numbers behind recruitment decisions, profitability and growth. With a team of 16 professionals, including an in-house Chartered Tax Adviser, we work with ambitious businesses to ensure important decisions are backed by sound financial information.

If you’re considering recruitment or reviewing the profitability of your team, get in touch with us today. We’d be delighted to help you understand the true cost — and value — of employing staff.