Inside IR35 Calculator 2026/27 rates
Estimate your take-home pay, tax & National Insurance for inside IR35 contracts — umbrella or limited company.
Inside IR35 take-home calculator
Enter your contract details below. Updated for 2026/27 tax thresholds (PAYE & NIC).
Your estimated inside IR35 net income
Inside IR35 calculation includes employer NICs on gross above threshold, employee tax & NIC. Umbrella margin deducted post-ER NIC. Pension sacrifice reduces tax/NI burden.
What is inside IR35? (2026 update)
If your contract falls inside IR35 (off-payroll working rules), HMRC treats you as an employee for tax purposes. The fee payer (agency or umbrella) must deduct income tax and National Insurance contributions at source. Our inside ir35 calculator gives a precise breakdown of your take-home pay, accounting for employer NI, umbrella margins, and the latest 2026/27 tax bands. Whether you’re using an umbrella company or a limited company deemed payment, understanding your net income is vital before signing a contract.
Many contractors ask: “What’s my real take-home after inside IR35?” With our inside ir35 take home calculator, you can instantly compare day rates and see the impact of pension salary sacrifice. In 2026, HMRC thresholds remain: Personal Allowance £12,570, Basic Rate 20%, Higher Rate 40%, Additional Rate 45%.
Inside vs Outside IR35: comparison at £500/day
| Metric | Inside IR35 (Umbrella) | Outside IR35 (Ltd Company) |
|---|---|---|
| Gross contract value | £115,000 | £115,000 |
| Employer NI & costs | ~£14,800 (NI + umbrella fee) | Corp tax ~19% on profit |
| Income Tax + Employee NI | ~£34,200 | Dividend tax & salary mix |
| Estimated annual net | £66,000 | ~£82,000–£85,000 |
| Inside example includes £25/m umbrella, 5% pension sacrifice. Outside assumes efficient dividend extraction. Always consult an accountant. | ||
Use our inside vs outside ir35 calculator mindset to weigh financial differences. Outside IR35 typically yields higher net, but comes with extra compliance responsibilities.
5 insider tips to maximise inside IR35 take-home (2026)
- ⚡ Salary sacrifice into pension: Reduce both income tax and employee NI. For every £1,000 sacrificed, you can save up to 45% tax + 2% NI.
- 📌 Compare umbrella companies: Weekly fees vary (£15–£35). Lower margin can save you £400+/year. Our umbrella inside ir35 calculator factors monthly fee.
- 🕒 Claim legitimate expenses: HMRC allows few expenses inside IR35, but mileage (5p/mile) and professional subscriptions can reduce tax liability.
- 💷 Know your holiday pay: Some umbrella companies roll-up holiday pay. Ensure it’s transparent – our calculator uses worked weeks model.
- 🧾 Use a dedicated accountant: Even inside IR35, a specialist can help optimise salary sacrifice and ensure correct PAYE coding.
Applying these strategies alongside our inside ir35 day rate calculator helps you negotiate contracts confidently.
How to use the inside IR35 calculator (3 simple steps)
- Enter your day rate, days per week and working weeks: Typical UK contractors work 46 weeks/year including holidays.
- Choose umbrella or limited company: Umbrella includes a monthly fee; limited company inside IR35 applies similar PAYE but no margin. Adjust pension sacrifice % to see tax savings.
- Review breakdown: Instantly see employer NI, tax, employee NI, and net weekly/monthly take-home. Perfect for budgeting.
Our inside ir35 calculator hmrc style aligns with official deemed payment methodology. For accuracy, always cross-check with your umbrella’s illustration.
Frequently asked questions — inside IR35
Inside IR35 means you’re taxed like an employee, with PAYE and NI deducted at source. Outside IR35 allows you to operate via a limited company, often paying less tax but requiring more admin. Use our inside or outside ir35 calculator to compare net income.
It follows HMRC thresholds for 2026/27 (tax rates, NI primary & secondary). Individual circumstances (student loan, pension contributions, Scottish rates) may differ, but it provides a reliable estimate.
Yes — simply enter the umbrella monthly fee. Our paystream inside ir35 calculator logic works for any provider, just adjust the margin.
Absolutely. Salary sacrifice reduces your taxable pay, lowering both income tax and employee National Insurance. You keep more net and boost your retirement pot.
The fee payer (agency or umbrella) pays employer NICs (13.8%) on your deemed salary above the secondary threshold (£9,100/year). This reduces the gross pay before PAYE is applied — our inside ir35 tax calculator models it correctly.
Yes, the inside ir35 calculator uk uses the 2026/27 personal allowance, NI thresholds and tax bands. HMRC rates remain stable for this tax year.
Our tool shows net income. Compare with a permanent salary after tax to see if contracting is worth it. Inside ir35 vs permanent calculator can be done by comparing net figures side-by-side.
Important legal & tax disclaimer
This inside ir35 calculator provides estimates only, not financial advice. Tax rules may change; individual contractor circumstances (student loans, Scottish tax, pension annual allowance) affect net pay. Always verify with a qualified accountant or HMRC. TotalCalcHub is not liable for decisions based on these estimates. Updated for 2026/27.