Most dental practice owners think about a first hire in terms of the salary: what do I need to pay to attract a good nurse, receptionist or practice manager? It is the wrong starting figure. The salary is the most visible part of the cost of an employee, but it is far from the whole of it. On top of the wage sit employer National Insurance, a workplace pension contribution, the cost of running payroll, and a tail of on-costs that together push the true cost of a hire well above the advertised figure.

This guide builds the loaded cost of employing your first team member, line by line, so you plan on the real number rather than the salary. We cover the employer NIC at 15%, the Employment Allowance that can soften it, the auto-enrolment pension duty, the payroll machinery, and the on-costs people forget. We also flag the question that decides whether any of this applies at all: whether the person is a genuine employee or a self-employed contractor, because that single distinction determines whether you run a payroll. Get the cost and the status right at the first hire and every hire after is straightforward.

The first question: employee or self-employed?

Before building any cost, settle whether the person is actually an employee. It matters because an employee goes on your payroll with all the obligations below, while a genuine self-employed contractor invoices you and handles their own tax, so you run no payroll on them and pay no employer NIC. A dental nurse, receptionist or practice manager working set hours under your direction, using your premises and equipment, integrated into the practice, is almost always an employee. By contrast, a self-employed associate dentist is typically a contractor, which is a different arrangement we cover in our guide to hiring your first associate.

The line turns on the substance of the arrangement, not the label. You cannot make a true employee self-employed by calling them a contractor or asking them to invoice you; HMRC looks at control, personal service, mutuality of obligation, financial risk and integration. Getting this wrong is expensive: treat a genuine employee as self-employed and you can face back PAYE, employer NIC and penalties. For most support-staff hires the answer is clearly "employee", so the rest of this guide assumes a payroll hire. If you are unsure where a particular role sits, take advice before the first payment.

Building the loaded cost, line by line

Here is the structure of the true cost of an employed team member. Start with the salary, then add each layer:

  • Gross salary. The headline wage you advertise and agree.
  • Employer National Insurance. 15% of earnings above the secondary threshold (see below).
  • Employer pension contribution. At least 3% of qualifying earnings under auto-enrolment.
  • Payroll cost. Running PAYE and Real Time Information, whether in-house software or a payroll bureau.
  • On-costs. Holiday pay, statutory sick and parental pay exposure, training, recruitment, uniforms and compulsory employers' liability insurance.

Each of those is a real cash cost, and together they take the loaded cost of a hire noticeably above the salary. The good news, covered later, is that the whole loaded cost is tax-deductible, so it reduces your taxable profit. But for cash-flow planning, the loaded figure is what you budget, not the wage.

Employer National Insurance at 15%

The biggest add-on to the salary is employer (secondary Class 1) National Insurance. From 6 April 2025 the employer pays NIC at 15% on the employee's earnings above the secondary threshold of £5,000 a year. The threshold was cut to £5,000 and the rate raised to 15% on that date, so the employer NIC cost of a wage is higher than it was under the old 13.8% rate and the higher previous threshold.

Work it through for a nurse on £28,000. Earnings above the £5,000 threshold are £23,000, and 15% of that is £3,450 of employer NIC, before any Employment Allowance. That is a real cost sitting on top of the wage, paid by the practice, not the employee. For a practice manager on a higher salary the figure climbs accordingly. This is the single clearest reason the cost of a hire is well above the salary, and it is the layer most often underestimated when an owner plans a first hire on the wage alone.

The Employment Allowance can take the sting out

There is relief on the employer NIC for most practices making a genuine hire: the Employment Allowance, currently £10,500, which offsets your employer NIC bill. A practice employing a nurse or manager can reduce the first £10,500 of secondary NIC to nil, which on our £28,000 nurse example would wipe out the £3,450 employer NIC entirely if the allowance is available and not already used.

The key restriction is the single-director rule: a company whose only employee is a single director cannot claim the Employment Allowance. This is why a sole-director dental company often cannot claim it. But the moment you take on a genuine second employee who is not just a sole director, a nurse or a manager, the allowance typically becomes available, which is a meaningful saving on the employer NIC of your first proper hire. We explain the single-director restriction in the context of owner extraction in our guide to paying yourself as a dental practice owner. For the first support-staff hire, the practical point is that the allowance usually applies and substantially reduces the NIC layer.

The workplace pension: auto-enrolment

The next layer is the workplace pension. Under automatic enrolment you must enrol any eligible jobholder, an employee aged between 22 and State Pension Age earning over the £10,000 earnings trigger, into a qualifying pension scheme and contribute. Contributions are calculated on qualifying earnings, the band between £6,240 and £50,270 for 2025/26, and the minimum total contribution is 8% of that band, of which you as the employer pay at least 3% and the employee pays the balance (5%, including tax relief).

For a nurse on £28,000, qualifying earnings are roughly £21,760 (the slice between £6,240 and £28,000), so the employer's 3% is around £653 a year. Staff who fall outside automatic enrolment, because they are under 22 or earn below the trigger, may still have a right to opt in or to join, so the pension is a duty that comes with employing people, not an optional perk. We cover the operational side of getting this right in our companion guide to payroll and auto-enrolment for dental practice staff, which walks through enrolment, the declaration of compliance and re-enrolment.

Running payroll: PAYE and Real Time Information

Employing someone means operating PAYE. You register with HMRC as an employer before the first payday, deduct income tax and employee National Insurance from wages, and report to HMRC on or before each payday under Real Time Information (RTI), paying over the deductions and the employer NIC monthly (or quarterly for small employers). The reporting is unforgiving on timing: late RTI submissions and late payments carry penalties.

Most practices run payroll either through dedicated software or by using a payroll bureau or their accountant, and there is a cost to either route, which belongs in the loaded cost of a hire. The administrative burden of payroll is modest once set up, but it is a standing obligation that begins the moment you have an employee, so it is worth setting up correctly from the first wage rather than improvising and correcting later. Clean payroll from day one also feeds straight into your bookkeeping and management accounts.

The on-costs people forget

Beyond pay, NIC, pension and payroll sits a tail of on-costs that are individually small but collectively meaningful:

  • Holiday pay. Part of the wage, but you carry the cost of the role when the person is on leave, often needing locum or temporary cover.
  • Statutory sick, maternity and paternity pay. Exposure that arrives unpredictably and has to be budgeted for as a risk.
  • Training and CPD. Clinical staff such as nurses have continuing professional development requirements.
  • Recruitment, uniforms and equipment. One-off and recurring costs of having staff.
  • Employers' liability insurance. Compulsory by law for an employer, with penalties for going without. It is a cost you must carry from the moment you have employees.

None of these breaks the bank, but they are why a realistic loaded cost sits a clear margin above the salary plus NIC plus pension. Budget for them so the first hire does not produce a string of small surprises in the months after they start.

The reassuring part: it is all deductible

Having built up the cost, here is the offset. Staff wages, the employer National Insurance on them, the employer pension contributions, the payroll cost and the on-costs are all allowable business expenses, deducted in arriving at your taxable practice profit because they are incurred wholly and exclusively for the trade. So while the loaded cost is higher than the salary, the whole of it is a pre-tax cost, reducing your taxable profit and giving relief at your marginal rate.

For a higher-rate sole trader or partnership, that means a large slice of the loaded cost is effectively borne by reduced tax rather than by you, and for a company the cost reduces corporation tax. This does not make the hire free, cash still leaves the practice, but it does mean the net cost is lower than the gross loaded figure. The discipline is to plan cash flow on the gross loaded cost and to remember that the tax deduction follows. Our guide to cash-flow management and tax reserves covers how to hold the cash for staff costs through the year.

A worked loaded cost for a first nurse

Put numbers on a typical first hire. A nurse on a £28,000 salary. Employer NIC is £3,450 (15% of the £23,000 above £5,000), but if the Employment Allowance is available on this genuine non-director hire, that £3,450 may be fully offset, so the net NIC cost can be nil for a practice within the allowance. The employer pension is around £653 (3% of qualifying earnings). Payroll might be a few hundred pounds a year. On-costs, holiday cover, training, insurance, recruitment amortised, add a further margin. So the cash loaded cost above the salary is meaningfully positive even after the Employment Allowance, driven mainly by pension, payroll and on-costs, and the whole of it is deductible. The key insight: the Employment Allowance can neutralise the NIC layer on a first hire, but pension and on-costs still take the true cost above the wage, and you should model it on the full figure.

Why the employee-versus-contractor line is worth getting right

It is worth returning to the status question, because the temptation to treat a support-staff hire as self-employed, to avoid the payroll and the employer NIC, is real and dangerous. A practice owner under cost pressure might ask a new nurse or receptionist to invoice them as a "self-employed contractor". For most such roles this does not reflect reality: a nurse working set hours under the practice's direction, using its premises and equipment, integrated into the team, is an employee in substance, and calling the arrangement self-employment does not change that.

If HMRC reviews the arrangement and finds a true employment relationship dressed up as self-employment, the practice becomes liable for the PAYE and employer National Insurance that should have been operated, plus interest and penalties, often going back several years. The supposed saving evaporates and turns into a larger bill. So the safe and correct approach for genuine support staff is to treat them as employees from the start: register for PAYE, run the payroll, pay the employer NIC, and enrol them in the pension. The cost is real, but it is the lawful cost, and it is fully deductible. The contractor route is only correct where the person genuinely is a contractor, which a typical nurse or manager is not.

Timing and funding the first hire

The first hire is also a cash-flow event, and timing it well makes it easier to absorb. Because the loaded cost lands monthly, the practice needs the recurring revenue to support it before the hire, not after. A common and sensible pattern is to hire when the appointment book or the contract delivery has grown to the point where the owner is turning work away or working unsustainable hours, so the new person's capacity translates fairly quickly into income or freed-up principal time. Hiring ahead of that demand is possible but means carrying the cost out of reserves until the role pays for itself.

Two practical funding points help. First, remember the deduction: although the cash leaves monthly, the cost reduces taxable profit, so the effective burden after tax relief is lower than the gross figure, which should be reflected in the cash-flow plan rather than ignored. Second, the Employment Allowance, where available, removes the employer NIC layer on a first genuine hire, which materially eases the early months. Plan the hire around a real, recurring need, hold a reserve for the first few months while the role beds in, and the first employee becomes a sustainable addition rather than a cash strain. Our guide to cash-flow management and tax reserves sets out how to hold the cash for recurring staff costs.

When a practice manager changes the picture

A first practice manager hire deserves a specific note, because the salary is usually higher and the role often unlocks value rather than just adding cost. The loaded-cost mechanics are identical, higher salary means higher employer NIC and pension, but a manager who tightens the books, chases UDA delivery, manages staff rotas and frees the principal to do clinical work can pay for themselves several times over. The tax treatment is the same: fully deductible loaded cost. The planning point is simply that a higher salary means a larger employer NIC figure (which may exceed the Employment Allowance once combined with other staff), so model the manager's loaded cost in full and weigh it against the time and capacity the role releases for the owner.

Employing a spouse: a special case of the first hire

One particular first hire deserves its own note: employing a spouse or family member in the practice. Done properly, it is a legitimate and tax-efficient arrangement, because it spreads income across two people's tax bands and, for a company, can unlock the Employment Allowance that a sole director cannot claim. But it carries a specific condition: the work must be genuine and the pay must be a market rate for the duties performed. HMRC disallows illusory or above-market spouse pay, so you must document the hours and tasks, pay through PAYE like any other employee, and be able to show the salary is commensurate with real work done.

The mechanics, employer NIC, auto-enrolment, deductibility, are identical to any other employee, but the scrutiny is higher because of the family relationship. Get it right and a genuinely employed spouse is one of the more useful planning tools available to a practice owner; get it wrong, by paying a spouse who does little or nothing, and the deduction is disallowed and the arrangement unwinds. We set out the boundaries in our guides to employing a spouse at a market rate and to the wider tax treatment of spouse employment. For many owner-managed practices, the spouse is the first genuine employee, which is precisely what makes the Employment Allowance available.

Get the first hire right and the rest follow

The first employee is the moment a dental practice becomes an employer, with all that brings: payroll, employer National Insurance, the Employment Allowance, auto-enrolment, employment law and compulsory insurance. None of it is prohibitive, but it all arrives at once, and the cost of the hire is always more than the salary you set out to pay. Plan on the loaded cost, confirm the person is genuinely an employee before running payroll, claim the Employment Allowance where it is available, and remember the whole cost is deductible. A specialist dental accountant can model the role's true cost, set up PAYE and the workplace pension, and confirm the status and the allowance, so your first hire strengthens the practice rather than catching you out on the numbers.

The wider truth is that employing people is the step that turns a solo practitioner into a practice, and like every such step it brings administration in exchange for capacity. The owner who treats the first hire's true cost honestly, budgets for the loaded figure, claims every deduction and allowance, and sets up payroll and the pension correctly, finds that a good employee is one of the best investments the practice can make. The numbers in this guide are not there to discourage the hire; they are there to make sure you go into it with clear eyes, paying the right cost, claiming the right relief, and treating the person correctly from the first payday. Get that foundation right with the first employee and every subsequent hire is simply a repeat of a process you already run well.