Contractor Pay Calculator IQ models your salary, dividends, corporation tax, and employer NI in real time — so you always know your true take-home pay before you make a decision.
What's included
Built specifically for UK limited company directors who want clarity on their tax position throughout the year — not just at self-assessment time.
Compare different salary levels and see the precise impact on employer NI, income tax, and take-home pay. Quickly find the most tax-efficient level for your circumstances.
Applies the 2026–27 dividend allowance (£500) and rates across basic (8.75%), higher (33.75%), and additional (39.35%) rate bands automatically.
Correctly calculates small profits rate (19%), main rate (25%), and marginal relief for profits between £50,000 and £250,000 — a calculation many tools get wrong.
The 15% employer NI rate and revised £5,000 secondary threshold introduced in the April 2025 Autumn Budget are applied correctly to your salary level.
Enter salary and dividends each month. The app accumulates your year-to-date figures and shows your running tax position at any point in the tax year.
Everything runs in your browser. No server, no login, no cloud. Your financial data is stored locally using browser storage and never transmitted anywhere.
Getting started
No installation, no software, no account. Just a single HTML file that runs in any modern browser.
Pay £7.99 via Stripe. Your card details are handled entirely by Stripe — we never see them.
Within seconds, an email arrives with your personal licence key and the app file attached.
Save the HTML file to your computer. Open it in Chrome, Safari, or Edge — no installation required.
Enter your name, email, and licence key. Your data saves automatically as you work throughout the tax year.
Example calculation
A typical contractor taking a low salary with dividends from their Ltd company.
Important: This example is for illustrative purposes only. Your actual liability will depend on your individual circumstances, including any other income, tax reliefs, and HMRC determinations. This does not constitute financial or tax advice. Consult a qualified accountant for guidance specific to your situation.
Frequently asked questions
It is designed for UK limited company directors taking a low salary with dividends. It assumes a single director/shareholder structure. It is not suitable for partnerships, sole traders, or companies with multiple shareholders.
No. This tool is for planning and awareness only. It does not constitute tax advice and cannot account for all individual circumstances. We strongly recommend consulting a qualified accountant for your self-assessment and tax affairs.
Yes — the calculator uses 2026–27 rates and thresholds including the employer NI changes from the April 2025 Autumn Budget. Always verify current rates at gov.uk/hmrc as legislation can change.
Everything is stored in your browser's local storage on your own device. No data is ever sent to a server. Clearing your browser data will clear your saved figures, so we recommend keeping a copy of the HTML file.
You receive an email with your personal licence key and the calculator as an HTML file attachment. Open the file in any modern browser, enter your licence key, and you are ready to go.
The licence is personal to you. Each licence key is generated from your email address and cannot be used by others. Please purchase a separate licence for each user.
Pricing
No subscription. No renewal. Pay once and use it all tax year.
One-time payment · Personal licence · Instant delivery
🔒 Secure payment via Stripe · Delivered by email instantly
By purchasing you confirm you have read and agreed to our disclaimer. This tool does not constitute financial or tax advice.