The Numbers That Tell You If You Can Afford to Hire

You’re working longer hours than ever. Your to-do list is growing faster than you can clear it. Clients are waiting. Evenings and weekends are no longer yours.

You’re busy, really busy. And it feels like the right time to hire.

Busy isn’t a financial metric. And making a hiring decision based on how stretched you feel, without looking at the numbers, is one of the most common (and costly) mistakes service-based limited company owners make.

So before you post that job ad, let’s talk about what the numbers actually need to look like.

Why “Busy” Isn’t Enough

Busyness can mean a lot of things. It can mean you’re fully booked with high-value clients. It can also mean you’re overloaded with low-margin work, poor boundaries, or inefficient processes that a new hire won’t fix, they’ll just inherit.

Hiring is a long-term financial commitment. Even a part-time employee adds up quickly when you factor in salary, employer’s National Insurance, pension contributions, holiday pay, and the time it takes you to onboard, manage, and train them.

The question isn’t “am I busy enough to hire?” The question is: “do my numbers support it?”

The Numbers You Need to Look At

1. Your Utilisation Rate

Utilisation rate is the percentage of your working hours that are actually billable to clients.

Formula:

Billable hours ÷ Total available working hours × 100

For most service-based businesses, a utilisation rate of 70–80% is considered healthy. If you’re consistently hitting 80%+ over several months, that’s a genuine signal that capacity is capped.

If your rate is lower, say 60%, the first question to ask is why.

Are you spending too long on admin? Chasing invoices? Doing work that could be automated or streamlined? Hiring before you’ve addressed those gaps means your new employee will cost you money without solving the real problem.

2. Your Revenue Per Head

This is your total revenue divided by the number of people in your business (including you).

Formula:

Total annual revenue ÷ Number of team members (including directors)

For service-based businesses, a revenue per head of £50,000–£80,000+ is a reasonable benchmark, though this varies by sector and pricing model. The point is to understand what each person in your business generates and whether adding another person is likely to increase that number, or dilute it.

3. Your Gross Profit Margin

Gross profit margin shows how much you’re actually keeping after direct costs, before overheads.

Formula:

(Revenue – Direct costs) ÷ Revenue × 100

For service-based businesses with no physical product, your gross margin should be high, often 60–80% or more. If it’s lower, dig into why before you add another salary to your cost base.

A new hire becomes a direct cost. Your margin needs to be strong enough to absorb that cost and still leave room for overheads, drawings, tax, and profit.

4. Can You Cover the True Cost of Employment?

This one trips people up. A salary of £25,000 doesn’t cost you £25,000. Here’s a more realistic picture for a limited company:

Cost	Approximate Amount
Gross salary	£25,000
Employer’s NI (13.8% above threshold)	£2,300
Employer pension contribution (min 3%)	£750
Holiday pay (included in salary, but plan for 28 days cover)	Factored in
Equipment, software, training	£500–£2,000+
Total true cost	£28,550–£30,050+

That’s before you factor in the time you spend managing them. Many business owners underestimate the management overhead, particularly in the first six months.

Before you hire, ask: can my current revenue comfortably cover this cost without compromising my own drawings or the business’s cash reserves?

5. Cash Flow Consistency

Profitability on paper is not the same as money in the bank. Before hiring, you need to be confident in your cash flow, not just for this month, but for the next six to twelve months.

Look at:

• Average monthly revenue over the past 6–12 months — not your best month, your average.

• Cash reserves — do you have at least 3 months’ worth of fixed costs (including the new salary) sitting in the bank?

• Client retention and contract stability — are your clients on retainers or regular agreements, or is your income project-based and variable?

  
  

If your revenue is inconsistent, a fixed employment cost adds significant risk. In that case, starting with a contractor or part-time freelancer may be a smarter first step.

6. Your Break-Even Point After Hiring

This is perhaps the most important calculation of all.

Work out what your monthly revenue needs to be to cover all your costs, including the new hire and still pay yourself properly.

Simple break-even formula:

(Current fixed costs + New hire cost per month) ÷ Gross margin % = Break-even revenue

If your break-even point after hiring is comfortably below your current average monthly revenue, you’re in a strong position. If it’s above, or dangerously close, you need either a plan to grow revenue before hiring, or a way to reduce other costs first.

A Note on Directors’ Pay

If you’re a director taking a combination of salary and dividends, make sure you’re looking at the total picture. It’s easy to see strong revenue and assume profit is healthy, without accounting for the tax position, retained earnings, and what you actually need to draw to cover your personal outgoings.

Your bookkeeper can help you model this properly and if you don’t have a clear view of your numbers month to month, that’s the first thing to fix before you even think about hiring.

When the Numbers Say Yes

You’re likely in a good position to hire if:

• Your utilisation rate has been consistently above 75–80% for three months or more

• Your gross profit margin is healthy and stable

• You have at least 3–6 months of operating costs in reserve

• Your average monthly revenue comfortably exceeds your break-even point post-hire

• You have recurring, retained clients rather than unpredictable project income

• You’ve already looked at whether process improvements or automation could reclaim capacity and concluded they can’t solve the problem alone

When the Numbers Say Not Yet

Consider waiting, or exploring alternatives (contractors, fractional support, automation), if:

• Your revenue is inconsistent month to month

• Your gross margin is being squeezed

• You don’t have clear financial visibility into your business

• You’re busy, but not necessarily profitably busy

• You haven’t yet addressed internal inefficiencies that a new hire would simply absorb

Hiring can be one of the best decisions you make, when the timing and numbers are right. But it should be a strategic decision, not an emotional one.

Feeling overwhelmed is a signal worth paying attention to. But the response to that signal should be to look at your numbers first, then decide. Because hiring too soon, or for the wrong reasons, doesn’t reduce pressure. It adds a whole new layer of it.

If you’re not sure where your numbers stand, that’s exactly where good bookkeeping support comes in. Having clean, up-to-date financials means you can make decisions like this with confidence, not guesswork.

Looking for clearer visibility over your business finances? Get in touch with LJM Bookkeeping to find out how we can help.

Book a call