Contractor vs Employee Cost Calculator — United Kingdom 2026-27
Weighing up contracting versus permanent? Compare take-home pay.
Compare the true UK all-in cost of a contractor versus an employee. Includes pension, holiday pay, employer National Insurance, agency margin, and off-payroll or status risk.
United Kingdom Contractor vs Employee Notes
UK hiring decisions often turn on employer National Insurance, pension contributions, holiday pay, and whether off-payroll or employment-status rules change the practical cost of a contractor arrangement.
This version is tuned to UK hiring decisions, where the quoted contractor day rate can look cheap until you layer in agency margin, status risk, and employer-side payroll costs.
UK-specific treatment for contractor vs employee: figures are framed in pounds, with British household or business wording and the assumptions commonly seen in PAYE, HMRC, mortgage, pension, and consumer-credit contexts.
Watch for UK markers in the page copy and inputs: HMRC, PAYE, National Insurance, pension contributions, stamp duty land tax, miles, APR, part-exchange, council tax, VAT, and GBP-based totals.
The result should be read as a United Kingdom estimate, so compare it with UK provider quotes, HMRC or GOV.UK guidance, lender affordability rules, devolved-nation differences, or regulated advice where needed.
Estimates only. 2026-27 HMRC rates.
Select the topic most relevant to your situation.
The break-even daily rate is the contractor rate at which total costs are equal to the total cost of employing the equivalent employee. Above this rate, the employee is cheaper. Below it, the contractor is cheaper.
Break-even = (salary + employer pension + employers’ liability insurance + employer National Insurance) ÷ working days. For a £120k salary with typical on-costs, this is approximately £645–£675/day. Contractor rates above this make the employee cheaper.
The minimum viable contractor rate is 115% of the break-even rate — the level at which a contractor earns meaningfully more than the equivalent employee after accounting for their own pension, insurance, and gap weeks. Below break-even, the contractor arrangement likely signals disguised employment.
It does not model redundancy (employees have statutory entitlements contractors do not), training costs, management overhead, or the value of workforce flexibility. These are real factors that often justify a contractor premium above pure break-even.
On-costs are the additional employer costs beyond base salary. In the United Kingdom, the main employer on-costs are pension contributions, holiday pay, and employer National Insurance. Employer Class 1 NI is a national charge with no regional variation.
Under auto-enrolment, the employer minimum contribution is 3% of an eligible jobholder’s qualifying earnings, with the employee contributing at least 5% for a combined 8% minimum. Contributions must be paid to the workplace pension scheme each pay period. Late payment can be reported to The Pensions Regulator.
Employer Class 1 NI is charged at 15% on earnings above the secondary threshold of £5,000 per year. It is a national charge — the rate and threshold are the same everywhere in the UK, with no regional or state variation. Employer NI is not payable on payments to a genuine contractor invoicing through their own company.
Employers’ liability insurance is a legal requirement and costs vary by industry. Typical office roles: 1–1.5%. Trades and construction: 3–5%. High-risk industries: up to 10%+. The premium is set by your insurer and applied to the wages bill. Contractors are generally not covered under the employer’s policy.
The off-payroll working rules (IR35) decide whether a contractor working through their own company should be taxed like an employee. Getting the status determination wrong leaves the fee-payer liable for unpaid PAYE tax and National Insurance plus interest and penalties.
Disguised employment occurs when a worker is engaged as a contractor but, looking at the reality of the engagement, is effectively an employee. Key indicators: the worker cannot send a substitute, works exclusively for one business, follows the business’s direction and systems, and is integrated into the organisation.
Where IR35 applies, the deemed-employer (usually the client or agency for medium and large businesses) must operate PAYE on the fee. If HMRC finds the rules were applied incorrectly, it can recover the unpaid income tax and employer/employee National Insurance, plus interest and penalties for careless or deliberate errors.
Genuine contractors have: their own limited company or UTR, multiple clients, control over how work is performed, a right of substitution, and supply their own tools and equipment. Long-term single-client arrangements, exclusive engagement, and direction over work methods all increase status risk. Use HMRC’s CEST tool and review at least annually.
Whether to engage a contractor or employee depends on more than cost. Flexibility, skills availability, headcount constraints, and risk tolerance all factor in.
Short-term projects, specialist skills not available in-house, surge capacity, roles with clear deliverables, or situations where headcount cannot be increased. The premium over the break-even rate is the cost of flexibility and speed.
Ongoing operational roles, roles requiring institutional knowledge, customer-facing roles requiring consistent culture, and any situation where the work is continuous and direction-dependent. The employee is almost always cheaper for permanent, ongoing roles.
Many businesses maintain a core of permanent employees supplemented by contractor capacity for peaks and specialist projects. The key is ensuring the contractor arrangements are genuinely different in structure from the employment arrangements — same role, different label is not compliant.
Methodology — on-costs, break-even, and minimum viable rate
Break-even formula
Break-even daily rate = (salary + employer pension + employers’ liability insurance + employer National Insurance) ÷ working days per year. This is the contractor rate at which total costs are equal to total employment cost. Above this rate, the employee is cheaper on a pure cost basis.
On-cost components 2026-27
| Component | Rate / Note |
|---|---|
| Pension (auto-enrolment) | 3% minimum employer contribution on qualifying earnings |
| Holiday pay | 5.6 weeks statutory minimum — ~12% of salary |
| Employers’ liability insurance | 1–3% typical (legally required, varies by industry) |
| Employer National Insurance | 15% on earnings above the £5,000/yr secondary threshold |
Pension, employers’ liability insurance, National Insurance — what each adds to your wage bill
| Salary | Total cost (approx. with all on-costs) |
|---|---|
| £60,000 | ~£71,000–£74,000 (18–23% loading) |
| £80,000 | ~£94,000–£98,000 |
| £100,000 | ~£118,000–£123,000 |
| £120,000 | ~£142,000–£148,000 |
| £150,000 | ~£178,000–£185,000 |
| £200,000 | ~£237,000–£247,000+ |
How employer Class 1 National Insurance is charged
Employer (secondary) Class 1 National Insurance is a national charge with no regional variation. It applies to every employer across the UK at the same rate and threshold.
| Item | 2026-27 value |
|---|---|
| Employer NI rate | 15% on earnings above the secondary threshold |
| Secondary threshold | £5,000 per year (£96/week) |
| Employment Allowance | Up to £10,500/yr relief for eligible employers |
| Genuine contractors | No employer NI is due on payments to a self-employed contractor or their limited company |
For a £50,000 salary, employer NI is 15% × (£50,000 − £5,000) = £6,750. Eligible employers can offset up to £10,500 with the Employment Allowance.
Employment-status and off-payroll (IR35) risks, indicators, and how to protect your business
IR35 / off-payroll exposure
| Exposure | Consequence |
|---|---|
| Incorrect status determination | Deemed-employer liable for unpaid PAYE income tax and employer/employee NI, plus interest |
| Careless or deliberate error | HMRC penalties on top of the back-tax, scaled to behaviour |
Key misclassification indicators
- Worker cannot subcontract or delegate work
- Worker is paid per hour/day rather than by result
- Business supplies tools, equipment, or workspace
- Worker works exclusively or predominantly for one business
- Business sets hours, location, and method of work
- Engagement is open-ended or repeatedly renewed for the same role
❓ Frequently asked Frequently asked questions
How much does an employee actually cost vs their salary?
An employee typically costs 18–25% more than their base salary after pension contributions, employers’ liability insurance (1–3%), holiday pay, and employer National Insurance (15% on earnings above £5,000). For a £100,000 salary, total cost is approximately £118,000–£123,000.
What is the break-even daily rate for a contractor?
The break-even rate is total annual employee cost divided by working days. For a £120,000 salary with standard on-costs including employer National Insurance, this is approximately £645–£675/day at 220 working days. Contractor rates above this make the employee cheaper on a pure cost basis.
How is employer National Insurance charged in the United Kingdom for 2026-27?
Employer (secondary) Class 1 National Insurance is 15% on each employee’s earnings above the secondary threshold of £5,000 per year. It is a national charge — the same rate and threshold apply across the whole UK with no regional variation. Eligible employers can reduce their bill by up to £10,500 using the Employment Allowance. No employer NI is due on payments to a genuine contractor.
What are the risks of misclassifying an employee as a contractor?
If the off-payroll working rules (IR35) apply and are handled incorrectly, HMRC can recover the unpaid PAYE income tax and employer and employee National Insurance, plus interest and penalties for careless or deliberate errors. A worker can also bring an employment tribunal claim for holiday pay, pension contributions, and other rights they should have received.
When is it cheaper to use a contractor vs an employee?
A contractor is cheaper on a daily rate basis only if their rate is below the break-even rate (total employee cost ÷ working days). This is rarely the case for specialist roles — contractors typically cost more per day but provide flexibility, speed, and skills on demand that can justify the premium for project-based or short-term work.
Where these figures come from
Employer-cost figures on this page are drawn from HMRC and GOV.UK (employer National Insurance, Employment Allowance, statutory holiday, employers’ liability insurance), The Pensions Regulator (auto-enrolment duties), and HMRC’s off-payroll working (IR35) guidance.
- Employer National Insurance — 15% above the £5,000 secondary threshold — GOV.UK — Rates and thresholds for employers 2026 to 2027.
- Employment Allowance (up to £10,500) — GOV.UK — Employment Allowance.
- Workplace pension minimums (3% employer / 8% total) — The Pensions Regulator — Employers.
- Statutory holiday entitlement (5.6 weeks) — GOV.UK — Holiday entitlement.
- Employers’ liability insurance — GOV.UK — Employers’ liability insurance.
- Off-payroll working (IR35) & employment status — GOV.UK — Understanding off-payroll working and HMRC — Check Employment Status for Tax (CEST).
Last checked: July 2026. Rates and thresholds are reviewed against the source of record each November, when annual adjustments for the following tax year are published.