Useful UK business tools. Free and straightforward.
Klamic is built around a simple idea: everyday business jobs should not require a complicated accounting package. These free tools cover common calculations and paperwork for UK freelancers, sole traders and small businesses.
Choose a tool
Four useful tools, one simple place to find them.
Free UK Invoice Generator
Create, preview and download a professional UK invoice as a PDF without creating an account.
- No sign-up needed
- Professional PDF download
- Built for UK sole traders and small businesses
UK VAT Calculator
Quickly add VAT to an amount, remove VAT from a VAT-inclusive total, or see the VAT element separately.
- Add or remove VAT
- 20%, 5% and 0% rates
- Simple instant breakdown
UK Take Home Pay Calculator
Estimate take-home pay from a UK salary with a straightforward calculation designed for quick reference.
- Monthly and annual figures
- Income Tax and National Insurance
- Fast general estimate
UK CIS Deduction Calculator
Work out Construction Industry Scheme deductions, direct materials, VAT treatment and the amount payable to a subcontractor.
- 20%, 30% and gross status
- Direct materials handled
- Normal and reverse-charge VAT
Why Klamic makes free tools
Sometimes you do not need software. You just need to work something out, create one document or check a figure. These tools are designed for those moments.
Where a calculator depends on UK tax or business rules, the individual tool explains its assumptions and links to the relevant official guidance. They are general reference tools, not a replacement for professional tax or accounting advice.
Need to send an invoice?
Klamic's free invoice generator works without an account. Create it, preview it and download the PDF.