Permanent vs Contractor Earnings: The Full 2026 Comparison for UK and Ireland

On average, UK contractors earn 30–50% more in gross terms than equivalent permanent employees. The premium exists because contractors cover costs that employers bear for permanent staff: holiday pay (28 statutory days), employer pension contributions (5–8% of salary), sick pay, employer National Insurance (13.8% of salary above the threshold), and the risk of non-renewal. A permanent £85,000 employee costs the employer approximately £100,000–£105,000 all-in. For a contractor at the same scope level to be worth hiring, they need to deliver that same value and cover their own costs, which is why genuine break-even for a £85K permanent role starts around £480–£520/day outside IR35.

Outside IR35, a day rate of approximately £435–£470 per day is the genuine break-even point for a £80,000 permanent salary, accounting for the hidden costs of contracting: holiday cover (28 days), employer pension (5%), sick pay, and the absence of employer NI savings that flow to you as a permanent employee. At this rate, you are roughly matching the permanent package in net economic terms. To actually benefit from contracting (higher net income), you need to be above approximately £500/day. Inside IR35, the equivalent is approximately £560–£590/day, because you lose the tax efficiencies of operating through a limited company.

For most senior tech professionals, outside IR35 contracting at market rates is financially superior to permanent employment by a meaningful margin. A senior engineer contracting at £650/day outside IR35 will typically net £10,000–£25,000 more per year than the equivalent permanent senior role, after accounting for the hidden costs of contracting. However, the calculation depends on four factors: (1) Your day rate relative to the break-even rate for your equivalent permanent salary. (2) IR35 status: inside IR35 dramatically reduces the tax advantage and may make permanent employment comparable or better. (3) Billing consistency: prolonged gaps between contracts eliminate the advantage. (4) Pension and savings discipline: the tax advantages of contracting (employer SIPP contributions from the limited company, for example) compound significantly over time if used systematically.

In Ireland, the break-even point for a limited company contractor compared to a permanent employee depends on how aggressively the contractor uses the available tax structures. At a minimum, a contractor needs approximately 1.8–2x their permanent daily equivalent to come out ahead after covering holidays, lack of benefits, and the cost of accountancy and company administration. For a €90,000 permanent salary (daily rate equivalent approximately €410/day), a contractor billing at €600/day through a limited company and making full use of employer PRSA contributions will typically net materially more in total economic terms. The comparison is harder to run than in the UK because Ireland's 12.5% Corporation Tax rate, combined with the PRSA employer contribution structure, creates a genuinely different optimisation than the UK model.

Inside IR35, the tax advantage of contracting through a limited company is effectively eliminated. You are taxed as an employee but without the benefits of employment (holiday pay, sick pay, employer pension). To match a £85,000 permanent salary inside IR35, you need a day rate of approximately £620–£660 per day, significantly more than the outside IR35 equivalent of £480–£520. Whether contracting makes sense inside IR35 depends on: (1) Whether the day rate available in the market justifies the additional risk and admin. (2) Whether you can negotiate a rate uplift of 20–25% to compensate for inside IR35 status. (3) Whether the contract market in your specialism has enough demand to keep billing rates high even under IR35.

The costs that permanent employees take for granted and contractors must fund themselves are: holiday pay (for a £550/day contractor, 28 days of holiday is worth £15,400/year not earned); employer pension (5–10% of a comparable permanent salary, often £4,000–£10,000/year); sick pay (zero for most contractors without income protection insurance, which costs £1,500–£3,000/year); employer National Insurance (13.8% on earnings above the threshold, which costs employers approximately £10,000/year for a £85K employee, which is why contractors appear expensive even at the same day-rate gross); accountancy and company administration (£1,000–£3,000/year); professional indemnity and public liability insurance (£500–£2,000/year); gap risk during contract transitions.

Outside IR35, yes, by a significant margin. At £600/day for 220 days (£132,000 gross), your net through a limited company is approximately £96,000–£100,000 per year, significantly above the £90,000 permanent take-home of approximately £60,000–£62,000. Even after factoring in holiday cover (28 days at £600 = £16,800 in foregone income), sick day risk, accountancy costs, and the absence of employer pension, you are likely better off by £15,000–£25,000 per year outside IR35. Inside IR35, the comparison tightens significantly. Run our permanent vs contract calculator with your specific figures for a precise answer.

Permanent employment is financially preferable to contracting in specific situations: (1) Inside IR35 at average or below-average contractor rates, where the PAYE tax treatment eliminates the financial advantage without the benefits. (2) When the contractor market in your specialism has low demand and high gap risk. (3) When employer equity (RSUs) is a significant part of total compensation at a specific company. (4) At major tech companies with best-in-class benefits packages (comprehensive healthcare, pension matching at 6–12%, annual leave above statutory). (5) When career progression, sponsorship, and learning opportunities are the priority and the specific permanent role offers them clearly. For most senior tech professionals not in these specific situations, contracting offers better lifetime earnings when used strategically.