CIS Calculator – Instantly Calculate Your CIS Deductions Online
Use our free CIS Calculator to calculate your Gross Pay, CIS Tax Deductions, and Net Income. Get monthly and yearly summaries with charts and breakdowns.
What is a CIS Calculator?
The CIS Calculator UK is an essential tool for subcontractors and self-employed workers in the construction industry. Under the Construction Industry Scheme (CIS), contractors are required to deduct money from subcontractors’ payments and pass it to HMRC as advance tax payments.
Our calculator makes it easy to:
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Estimate your gross pay
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Calculate your CIS tax deduction (typically 20%)
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See your net pay
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Get a yearly tax summary
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Visualize the data through easy-to-read bar charts
How Does the CIS Deduction Work?
Under CIS, registered subcontractors usually have 20% tax deducted from their payments (or 30% if unregistered). This amount is credited towards your end-of-year tax bill.
Example:
If you earn £2,500 in a month:
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Gross Pay: £2,500
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CIS Deduction (20%): £500
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Net Pay: £2,000
This calculator gives you exactly that, instantly!
Features of Our CIS Calculator
| Feature | Details |
|---|---|
| Real-time CIS Tax Deduction | Calculates 20% (or custom) tax deduction on gross monthly pay |
| Tax Year Summary | Displays total income, deductions, and net income for 12 months |
| Visual Charts | Interactive bar charts display gross, tax, and net pay |
| Mobile-Friendly | Optimized for mobile devices and tablets |
| Safe for WordPress | 100% conflict-free – works perfectly with your WordPress theme/plugins |
Who Should Use This Calculator?
This tool is ideal for:
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Subcontractors
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Self-employed workers
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Freelance construction professionals
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Anyone working under the CIS scheme in the UK
Why Use Our CIS Calculator?
You can avoid manual calculations and stay on top of your finances. Whether you’re preparing for tax returns or just want a quick overview, this calculator saves time and reduces errors.
Is My Data Stored?
No. This calculator runs entirely in your browser. We do not collect or store any personal or financial data.
Frequently Asked Questions (FAQs)
What is the standard CIS tax rate?
The standard deduction for registered subcontractors is 20%. If you’re not registered with HMRC, it’s 30%.
Can I customize the tax rate?
Yes. You can modify the deduction rate if your contract has different terms.
Is this calculator accurate for HMRC purposes?
It provides a very close estimate, but always double-check with your accountant or HMRC before submitting your tax return.
Can I use this on my phone?
Absolutely. The tool is mobile-responsive and works perfectly on smartphones and tablets.
Is it free to use?
Yes – this CIS Calculator is completely free to use, forever.
Our CIS Calculator UK helps you manage your finances confidently. Whether you’re budgeting monthly or planning your yearly taxes, this tool gives you fast, accurate results with professional-level detail.