Why the Permanent Equivalent Is Lower
A contractor on £1550/day earns £341,000/year gross. But a permanent employee on that salary also gets employer pension (3-10%), 25-28 days holiday (paid), sick pay, employer NI contributions (15%), and training, equipment, and other benefits. These benefits are worth roughly 25-35% of salary, so the equivalent permanent salary is £255,750.
Take Home at £341,000 (2025/26)
On PAYE or inside IR35, £341,000 loses £139,653 to income tax and £8,831 to National Insurance at 2025/26 rates (thresholds frozen to 2028), leaving £192,516 — £16,043 a month, or 56.5% of gross. The marginal rate on every extra pound is 47% (45% additional rate plus 2% NI), and the personal allowance is long gone: it tapers away between £100,000 and £125,140. By contrast, the £255,750 permanent equivalent nets £12,278/month — £3,765 less per month, which is precisely the premium you are being paid for carrying contractor risk. For scale, £341,000 is roughly 9.7 times the UK median full-time salary of about £35,000.
Pension Contributions Change the Maths
Pension contributions are the single most effective tax lever at this income, with relief at your 47% marginal rate. At £341,000 your adjusted income sits above HMRC's £260,000 taper threshold, so per gov.uk guidance your annual allowance is cut by £1 for every £2 above the line — roughly £19,500 here rather than the standard £60,000 (assuming no other income or pension accrual). Contributions beyond the tapered allowance trigger an annual allowance charge, though carry-forward of unused allowance from the previous three tax years can extend the headroom.
Day Rates Compared
| Day Rate | Annual (220 days) | Perm Equivalent | Take Home/Mo (contract) |
|---|---|---|---|
| £1350/day | £297,000 | £222,750 | £14,100 |
| £1400/day | £308,000 | £231,000 | £14,586 |
| £1450/day | £319,000 | £239,250 | £15,071 |
| £1500/day | £330,000 | £247,500 | £15,557 |
| £1550/day | £341,000 | £255,750 | £16,043 |
| £1600/day | £352,000 | £264,000 | £16,529 |
| £1650/day | £363,000 | £272,250 | £17,015 |
| £1700/day | £374,000 | £280,500 | £17,501 |
| £1750/day | £385,000 | £288,750 | £17,986 |
Browse all day rate to salary equivalents, see the full £1550/day tax breakdown or the £1550/day inside vs outside IR35 comparison. High earners should also read the £100k tax trap guide and high-earner tax tips.
FAQs
What is £1550 day rate equivalent salary?
£1550/day = £341,000/year (220 days). The permanent equivalent salary is approximately £255,750 when accounting for benefits like pension, holiday pay, sick pay, and employer NI.
How much do you take home on £1550/day inside IR35?
About £16,043/month (£192,516/year) after income tax and National Insurance at 2025/26 rates (thresholds frozen to 2028) — an effective deduction rate of 43.5%.
What does the £255,750 permanent equivalent pay after tax?
A £255,750 salary takes home about £12,278/month (£147,334/year), plus employer pension, paid holiday and sick pay that the contractor must fund from the day rate.