Use our outside IR35 contractor calculator to instantly estimate your monthly and annual take-home pay and taxes when working on an outside IR35 contract through a limited company. Not just numbers — our calculator also provides a detailed explanation of the results in simple terms, making it easier to understand how your take-home pay and tax figures are calculated.
| Description | Amount £ |
|---|---|
| Annual Turnover | £0.00 |
| Business Expenditure | |
| Annual Business Expenses | £0.00 |
| Pension Contributions | £0.00 |
| Gross Salary | £0.00 |
| Employer’s NIC | £0.00 |
| Total Expenditure | £0.00 |
| Profit Before Tax | £0.00 |
| Corporation Tax | £0.00 |
| Profit available as Dividends | £0.00 |
| Personal Tax Breakdown | |
| Total Taxable Income | £0.00 |
| Income Tax (PAYE) | £0.00 |
| Employee NIC | £0.00 |
| Dividend Tax | £0.00 |
| Net Annual Income | £0.00 |
| Net Monthly Income | £0.00 |
This tool is specifically designed for professional contractors and freelancers who operate—or are considering operating—via a Limited Company (PSC) in the UK. It is most useful for:
Calculating take-home pay outside IR35 is a multi-stage process because the money is taxed twice: once at the company level and once at the personal level. Here is the highly detailed logic our calculator uses:
First, we calculate your company’s total revenue. We assume a standard 44-week working year to account for holidays, bank holidays, and potential gaps between contracts.
Before any tax is paid, the company deducts its running costs. These reduce your taxable profit:
The remaining amount is your Profit Before Tax. We apply the UK's tiered Corporation Tax rates:
Once Corporation Tax is paid, the remaining profit can be issued as Dividends. You can use our Dividend Voucher Generator to formalise your payments.
To see how this works in practice, let’s look at a typical "Outside IR35" scenario for the 2026/27 tax year.
The Scenario: A contractor earning £500 per day, working 5 days a week for 44 weeks. They claim £2,000 in annual expenses, make £5,000 in company pension contributions, and pay themselves a tax-efficient director's salary of £9,100.
Phase 1: Business Expenditure
Your company generates an Annual Turnover of £110,000.
From this, we deduct your £2,000 expenses, £5,000 pension, £9,100 salary, and £615 in Employer’s NICs. This brings your Total Expenditure to £16,715.
Phase 2: Company Taxes
Subtracting the expenditure leaves a Profit Before Tax of £93,285.
Because this falls between the lower and upper thresholds, Marginal Relief is applied, resulting in a Corporation Tax bill of roughly £20,970. This leaves £72,314 in the business as Profit available as Dividends.
Phase 3: Personal Tax Breakdown
You extract the remaining £72,314 as dividends. Combined with your £9,100 salary, your total income is £81,414.
Because your salary is below the £12,570 Personal Allowance, your PAYE and Employee NIC are £0. After applying the remaining allowance and the £500 Dividend Allowance, your final Dividend Tax bill sits at approximately £15,008.
Phase 4: The Bottom Line
After all company and personal taxes are paid, your Net Annual Income is £66,406 (which breaks down to £5,533 per month). Ultimately, you effectively take home about 60% of your total contract value, while successfully setting aside £5,000 into your pension.
IR35 is UK tax legislation that determines whether a contractor is genuinely operating as a business or effectively working as an employee.
If a contract is inside IR35, income is taxed similarly to employment, resulting in higher tax and National Insurance. If it is outside IR35, contractors can operate through a limited company and structure income more efficiently.
The distinction is based on working practices, not just the contract wording.
Outside IR35 means that your contract is considered a genuine business-to-business engagement rather than employment. As a result, you are responsible for managing your own taxes through your limited company.
When working outside IR35, contractors typically take a combination of salary and dividends, which can result in higher take-home pay compared to inside IR35 roles.
This outside IR35 calculator helps estimate your net income based on your day rate, expenses, and dividend strategy under current UK tax rules.
Small adjustments in how you structure your income can significantly impact your net earnings.
Many contractors choose to take a low salary and extract the remaining profits as dividends, as dividends are taxed differently. Pension contributions can also reduce corporation tax while supporting long-term planning.
Business expenses further reduce taxable profit, meaning accurate expense tracking plays an important role in overall efficiency.
The most effective approach depends on your income level, tax band, and long-term goals, which is why reviewing your structure each tax year is important.
Pro tip: Small changes in your salary and dividend split can significantly impact your take-home pay. Many limited company contractors working outside IR35 adjust this balance each tax year to stay within optimal tax bands and minimise overall liability.
How is take-home pay calculated outside IR35?
Take-home pay is calculated after deducting business expenses, salary, employer and employee National Insurance, corporation tax, and dividend tax. The remaining amount represents your net income.
Is outside IR35 always more tax efficient?
In many cases, yes, as contractors can structure income through dividends. However, the actual benefit depends on income level, expenses, and how the company is managed.
What is the most tax-efficient salary?
Many contractors choose a salary close to the National Insurance threshold, but the optimal level depends on your wider financial situation and tax position.
Do pension contributions reduce tax?
Yes, pension contributions made through your company are usually treated as a business expense, reducing corporation tax while also supporting retirement planning.
Can I rely on this calculator for financial decisions?
This calculator is designed for estimation and planning. Actual outcomes may vary, so professional advice should be considered before making financial decisions.
This calculator provides general estimates for illustrative purposes only and does not constitute financial, tax, or legal advice. Results may vary based on individual circumstances. Always consult a qualified accountant before making financial decisions.