Contractor Day Rate Calculator 2026/27 — Work Out What You Need to Charge
Enter a target annual take-home to find the minimum day rate you need — or enter a day rate to see your net income. Both modes calculate via Ltd Co outside IR35, updated for 2026/27 thresholds.
Why contractors charge more than equivalent employees
The contractor day rate premium over an equivalent permanent salary is not profit — it compensates for genuine additional costs and risks. A permanent employee receives holiday pay (typically 28 days statutory minimum, worth around 11% of salary), sick pay, employer pension contributions (minimum 3%), and employment benefits. A contractor receives none of these. Add in the cost of professional indemnity insurance (£400–£1,200/year), accountancy fees (£1,000–£3,000/year), gaps between contracts (typically 2–6 weeks per year), and the extra admin burden, and the premium becomes reasonable rather than excessive.
A common rule of thumb is that a contractor day rate of £X is equivalent to a permanent salary of approximately £X × 200 on a total cost basis. So £450/day ≈ £90,000 permanent total package. The calculator lets you test both directions: what day rate you need to achieve a target take-home, or what a given rate actually delivers net.
Typical utilisation rates by sector
Not all 228 working days will be billed. Typical contractor utilisation varies: technology contractors average 210–235 billable days per year; interim management and finance contractors tend to have fewer but longer contracts at 190–220 days; creative and marketing contractors with multiple clients often bill more days but at lower day rates. The calculator defaults to 228 days — a reasonable planning assumption for a single-client technology contractor. If your contracts typically include a notice or break clause that costs you bench time, reduce this figure accordingly.
Outside IR35 via Ltd Co · 2026/27 · Employment Allowance applied
Assumes outside IR35 operation via Ltd Co. Estimates only. Holidays, gaps between contracts, and VAT are not modelled. Consult a qualified adviser.
How this calculator works
- Ltd Co model (outside IR35)
- Annual billing = day rate × billable days. Director salary fixed at £12,570. Employer NI at 15% above £9,100, offset by Employment Allowance. Corporation tax (19%/25%) applied. All distributable profit taken as dividends.
- Reverse calculation
- The "target take-home" mode uses a binary search across day rates (£1–£10,000) to find the minimum rate that delivers your target net income. The result is rounded to the nearest £1.
- Billable days
- Typical UK contractor assumption is 220–235 billable days per year (after holidays, bank holidays, and gaps between contracts). The default of 228 days is a common benchmark. Adjust to match your expected utilisation.
- What is not included
- VAT registration and quarterly VAT returns. Professional indemnity and other insurance. Pension contributions. Gaps between contracts. All of these reduce effective take-home further.
Frequently asked questions
How many days a year should a contractor expect to bill?›
A typical UK contractor bills 220–235 days per year. There are approximately 252 working days in a year, but you need to subtract holidays (20–25 days), bank holidays (8), and gaps between contracts (5–15 days). Many contractors use 228 days as a planning assumption, but utilisation varies widely by sector and seniority.
Should I include VAT in my day rate?›
If you are VAT-registered (mandatory above £90,000 turnover), your day rate to clients is typically quoted exclusive of VAT. VAT is collected and passed to HMRC — it does not affect your income. The Flat Rate Scheme can generate a small VAT profit at lower turnover levels.
How does this compare to a permanent salary?›
A rough rule of thumb is that a contractor day rate of £X per day is equivalent to a permanent salary of roughly £X × 200 (220 days minus margin for employment benefits like holiday pay, pension, sick pay). For example, £500/day ≈ £60,000–£70,000 permanent salary on total cost basis.
What expenses can I put through my Ltd Co?›
Wholly and exclusively business expenses are deductible: professional indemnity insurance, accountancy fees, equipment, home office costs (on a reasonable basis), professional subscriptions, travel to client sites (where not a regular commute), and training. These reduce taxable profit and therefore corporation tax.
What happens if I am inside IR35?›
If your contract is inside IR35, use the IR35 calculator instead. Inside IR35, your day rate is treated as a deemed salary — you pay income tax and NI as an employee, with the employer NI absorbed before your deemed salary is calculated. This typically results in significantly lower take-home than outside IR35.
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