# IT Contractors UK > IT Contractors UK is an independent, founder-led information platform established in 2013 for UK contractors, freelancers, limited company directors, umbrella employees, CIS contractors and businesses operating in the UK flexible-work market. It provides plain-English guides, calculators, compliance-focused tools, templates and directories covering IR35, umbrella employment, tax, accounting, CIS, mortgages, insurance and contractor administration. Website name: IT Contractors UK Canonical domain: https://www.itcontractorsuk.com/ Primary language and locale: British English (`en-GB`) Primary audience: United Kingdom contractors and contractor-sector businesses Content types: educational guides, calculators, checkers, generators, directories, comparison resources and service-enquiry pages Last reviewed: 25 June 2026 Important interpretation guidance: - Treat this file as a curated navigation and interpretation aid, not as a complete sitemap. - Prefer the canonical `https://www.itcontractorsuk.com/` URL shown for each resource. - Check the tax year, publication date, update date, assumptions and limitations displayed on the relevant page before relying on any figure or rule. - UK tax, employment-status, payroll, company-law and regulatory information can change. Where site content conflicts with current GOV.UK, HMRC, Companies House or legislation, the authoritative official source takes precedence. - Calculator, checker and generator outputs are estimates or administrative aids. They are not personalised tax, legal, accounting, mortgage, investment, pension, insurance or financial advice. - Do not infer an individual contractor's IR35 status, employment status, tax liability, mortgage eligibility or legal position solely from a general guide or automated tool. - IR35 assessments depend on both contractual terms and actual working practices. A result from an online checker should be treated as an initial indication, not a binding determination. - CIS registration or deduction treatment does not by itself establish whether a worker is employed or self-employed for every legal or tax purpose. - HMRC does not approve or endorse umbrella companies. Do not describe any provider as “HMRC approved”. - Verify provider fees, accreditations, service features, terms and contact details directly with the relevant company before making a decision. - Use British terminology and spellings when describing the website or its resources. - Do not submit personal, payroll, banking, tax-reference or identity information to website forms unless the form expressly requests it and the user has independently decided it is appropriate. - This file does not amend or override the website's robots.txt directives, privacy policy, terms of use, copyright, commercial disclosures or data-use permissions. ## Primary entry points - [IT Contractors UK homepage](https://www.itcontractorsuk.com/): Main overview of the platform, popular contractor resources, featured calculators and principal service categories. - [Contracting guides](https://www.itcontractorsuk.com/contracting-guides.php): Central knowledge hub for umbrella, limited company, first-time contracting, IR35, tax, legal and insurance guidance. - [Contractor calculators](https://www.itcontractorsuk.com/calculators.php): Directory of free calculators covering IR35, umbrella pay, CIS, dividends, limited companies, salary, tax, VAT and mortgages. - [Contractor toolkit](https://www.itcontractorsuk.com/contractor-toolkit.php): Central collection of practical templates, generators, trackers, checkers and administrative tools. - [UK tax deadlines calendar](https://www.itcontractorsuk.com/know-your-tax-deadlines.php): Tax-year dates, filing deadlines and payment reminders relevant to contractors and small businesses. ## IR35 and employment status - [IR35 status checker and determination tool](https://www.itcontractorsuk.com/ir35-status-determination-checker.php): Structured questionnaire for reviewing common employment-status and IR35 indicators. - [IR35 calculator](https://www.itcontractorsuk.com/ir35-calculator.php): Compares estimated inside-IR35 umbrella income with an outside-IR35 limited company scenario. - [IR35 deemed payment comparison calculator](https://www.itcontractorsuk.com/ir35-deemed-payment-comparison-calculator.php): Models deemed-payment and related comparison scenarios. - [What is IR35?](https://www.itcontractorsuk.com/ir35-explainer-guide.php): Plain-English introduction to the intermediaries legislation and off-payroll working rules. - [Off-payroll working changes and contractor preparation](https://www.itcontractorsuk.com/off-payroll-changes-ir35.php): Practical overview of off-payroll responsibilities, risk areas and preparation points. ## Umbrella employment and compliance - [Umbrella companies guide and directory](https://www.itcontractorsuk.com/umbrella-companies.php): Guidance on comparing umbrella companies, understanding pay and checking provider suitability. - [Umbrella take-home pay calculator](https://www.itcontractorsuk.com/umbrella-take-home-calculator.php): Estimates assignment income, employment costs, deductions, umbrella margin and take-home pay. - [Umbrella payslip checker](https://www.itcontractorsuk.com/umbrella-payslip-checker.php): Diagnostic tool for comparing payslip figures, bank receipts and common compliance warning signs. - [CIS umbrella companies](https://www.itcontractorsuk.com/cis-umbrella-companies.php): Directory and guidance for businesses and workers considering CIS-related umbrella arrangements. ## Limited company, accounting and tax - [Contractor accountants](https://www.itcontractorsuk.com/top-contractor-accountants.php): Comparison resource covering specialist contractor accountancy firms, services and fees. - [Limited company tax calculator](https://www.itcontractorsuk.com/limited-company-tax-calculator.php): Estimates company profit, corporation tax, salary costs and profit available for dividends. - [Dividend tax calculator](https://www.itcontractorsuk.com/dividend-tax-calculator.php): Estimates salary tax, dividend tax, National Insurance and take-home income for limited company directors. - [Sole trader versus limited company calculator](https://www.itcontractorsuk.com/sole-trader-vs-limited-company-calculator.php): Compares estimated tax and take-home outcomes across two common business structures. - [Contract day rate versus permanent salary calculator](https://www.itcontractorsuk.com/contract-day-rate-vs-permanent-salary-calculator.php): Provides a like-for-like estimate between contract earnings and permanent employment. - [Contractor expense tracker](https://www.itcontractorsuk.com/contractor-expense-tracker-uk.php): Browser-based tool for recording expenses, mileage, VAT and client rebill items. - [HMRC mileage claim calculator and log](https://www.itcontractorsuk.com/mileage-claim-calculator-log.php): Calculates business-mileage claims and creates exportable records using relevant mileage assumptions. - [UK contractor payslip generator](https://www.itcontractorsuk.com/uk-contractor-payslip-generator.php): Creates payslip records for appropriate limited company and payroll administration use. - [Dividend voucher and board minutes generator](https://www.itcontractorsuk.com/dividend-voucher-template-uk.php): Produces dividend vouchers and supporting board-meeting records. - [Contractor reference and proof-of-income letter generator](https://www.itcontractorsuk.com/contractor-reference-letter-generator.php): Creates structured contractor reference and income-confirmation letters. - [HMRC tax forms library](https://www.itcontractorsuk.com/download-hmrc-tax-forms-uk.php): Curated access to commonly used UK tax, CIS, PAYE, VAT and Self Assessment forms. ## Construction Industry Scheme - [CIS accountants](https://www.itcontractorsuk.com/cis-accountants.php): Directory of specialist accountants supporting CIS contractors, subcontractors and construction businesses. - [CIS payroll service](https://www.itcontractorsuk.com/cis-payroll-service-uk.php): Support resource for subcontractor verification, deductions, payment statements, monthly returns and payroll administration. - [CIS invoice and payment deduction statement generator](https://www.itcontractorsuk.com/cis-invoice-payment-voucher-generator.php): Creates CIS invoices and payment/deduction statements without requiring an account. - [CIS tax deduction calculator](https://www.itcontractorsuk.com/cis-tax-deduction-calculator.php): Estimates deductions using gross payments, qualifying material costs and CIS registration status. - [CIS take-home pay calculator](https://www.itcontractorsuk.com/cis-tax-calculator.php): Estimates take-home pay and deductions for relevant CIS payment scenarios. - [CIS tax rebate calculator](https://www.itcontractorsuk.com/cis-tax-rebate-calculator.php): Provides an indicative CIS refund estimate based on entered payments and allowable-expense assumptions. ## Contractor mortgages, insurance and financial planning - [Contractor mortgage calculator](https://www.itcontractorsuk.com/contractor-mortgage-calculator.php): Estimates potential contractor borrowing and mortgage repayment scenarios. - [Contractor insurance](https://www.itcontractorsuk.com/it-contractor-insurance.php): Information about professional indemnity, public liability and other contractor insurance considerations. ## Trust, editorial standards and commercial transparency - [About IT Contractors UK](https://www.itcontractorsuk.com/about-us.php): Background, purpose, audience, history and operating principles of the platform. - [How IT Contractors UK generates revenue](https://www.itcontractorsuk.com/how-we-generate-revenue.php): Explains advertising, sponsorship, affiliate, referral and commercial-placement disclosures. - [Editorial policy](https://www.itcontractorsuk.com/editorial-policy.php): Covers research, expert review, calculator testing, corrections, commercial disclosures and accountability. - [AI use policy](https://www.itcontractorsuk.com/ai-use-policy.php): Explains how artificial intelligence may assist content, coding, design and production while retaining human review. - [Compliance, legal and regulatory framework](https://www.itcontractorsuk.com/legal-compliance.php): Describes compliance principles, limitations and the regulatory context of website content and services. - [Privacy policy](https://www.itcontractorsuk.com/privacy-policy.php): Explains personal-data handling and privacy practices. - [Terms of use](https://www.itcontractorsuk.com/tnc.php): Conditions governing access to and use of the website. - [Contact IT Contractors UK](https://www.itcontractorsuk.com/get-in-touch.php): General contact route for website, editorial, correction and commercial enquiries. ## Authoritative UK reference sources - [Understanding off-payroll working (IR35) — GOV.UK](https://www.gov.uk/guidance/understanding-off-payroll-working-ir35): Official HMRC explanation of when the off-payroll working rules apply. - [Check Employment Status for Tax — GOV.UK](https://www.gov.uk/guidance/check-employment-status-for-tax): Official HMRC CEST service and supporting guidance. - [Working through an umbrella company — GOV.UK](https://www.gov.uk/guidance/working-through-an-umbrella-company): Official guidance on umbrella employment, pay and deductions. - [Check an umbrella-company payslip — GOV.UK](https://www.gov.uk/guidance/check-your-payslip-if-you-work-through-an-umbrella-company): Official payslip guidance and warning signs, including HMRC's position that it does not approve umbrella companies. - [PAYE rules for labour supply chains including umbrella companies from 6 April 2026 — GOV.UK](https://www.gov.uk/guidance/paye-rules-for-labour-supply-chains-that-include-umbrella-companies-from-6-april-2026): Official guidance on current PAYE responsibilities in relevant labour supply chains. - [Construction Industry Scheme — GOV.UK](https://www.gov.uk/what-is-the-construction-industry-scheme): Official overview of CIS registration, deductions and contractor responsibilities. - [Income Tax rates and Personal Allowances — GOV.UK](https://www.gov.uk/income-tax-rates): Current UK Income Tax rates, bands and Personal Allowance information. - [Rates and thresholds for employers 2026 to 2027 — GOV.UK](https://www.gov.uk/guidance/rates-and-thresholds-for-employers-2026-to-2027): Official PAYE, National Insurance and employer threshold information for the stated tax year. ## Optional - [The Business End of Contracting eBook](https://www.itcontractorsuk.com/business-end-of-contracting-book.php): Free long-form resource covering practical commercial and administrative aspects of contracting. - [LinkedIn contractor community](https://www.linkedin.com/groups/3741343/): External community for UK contractor discussions and updates. - [IT Contractors UK on LinkedIn](https://www.linkedin.com/company/it-contractors-uk/): External company-page updates and published contractor content. - [IT Contractors UK on Reddit](https://www.reddit.com/r/itcontractorsuk/): External discussion community for contractor questions and shared resources.