Use our popular contractor calculators to work out your tax liabilities, take-home pay and limited company profits for the 2026/27 tax year.
Our calculators cover limited company contractors, IR35, umbrella companies and sole traders, as well as Corporation Tax, VAT, mortgages and relevant life insurance.
These calculators are based on the same Excel models we use ourselves at ITC. All tax calculations have been checked by ACA-qualified accountants.
Limited company tax calculators
Our main limited company calculators cover company profits, Corporation Tax and the personal tax you pay when you withdraw profits as dividends.
Dividend Tax Calculator
Work out how much personal tax you will pay on dividends during the 2026/27 tax year, taking into account your other income and the £500 dividend allowance.
Previous tax years: 2025/26 | 2024/25
Limited Company Profit Calculator
Find out how much profit your company retains after business expenses and Corporation Tax. You can then see how much is available to distribute to shareholders as dividends.
Corporation Tax Calculator
Calculate your company’s Corporation Tax bill using the current 19% small profits rate, 25% main rate and Marginal Relief where applicable.
Read more in our Corporation Tax guide for contractors.
Contractor take-home pay calculators
Use these calculators to compare how much of your contract income you actually take home under different working arrangements.
IR35 Calculator
Compare your net take-home pay when working inside and outside IR35. This is particularly useful when comparing an inside IR35 contract with an outside IR35 limited company role.
Read more in our guide to IR35 (and off-payroll) for contractors.
Umbrella Company Take Home Pay Calculator
Calculate your umbrella take-home pay after employment costs have been deducted from the assignment rate and PAYE tax and National Insurance have been deducted from your gross salary.
You can also include any pension contributions you have made via salary sacrifice.
Sole trader and VAT calculators
Sole Trader Tax Calculator
Work out the Income Tax and National Insurance you will pay on your self-employed profits.
VAT Calculator
Quickly add or remove VAT from an amount using the standard 20%, the reduced 5%, or the zero rate.
Contractor mortgage calculators
Contractor-friendly lenders can use your contract rate when assessing how much you can borrow, rather than relying solely on the salary and dividends shown in your accounts.
Contractor Mortgage Calculator
Estimate how much you may be able to borrow based on your daily contract rate and the multiples commonly used by contractor mortgage lenders.
Mortgage Repayment Calculator
Calculate your monthly mortgage payments and the total cost of borrowing for repayment and interest-only mortgages.
Relevant Life Insurance Calculator
Relevant life insurance allows a limited company to pay for qualifying life cover for a director or employee. Our calculator compares the cost of company-funded relevant life cover with paying for equivalent cover personally from post-tax income.