All tools

Free UK Business Tools

A small, focused set of calculators and document tools for UK freelancers, sole traders and small businesses. Pick a category, open a tool — no sign-up required.

Pricing

DAY

Freelance Rate Calculator UK

Work out a sustainable hourly and day rate.

Pricing & profit

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PRJ

Freelance Project Price Calculator

Turn your freelance rate into a project price with time, expenses and contingency.

Pricing & profit

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Finance

MAR

Profit Margin Calculator

Calculate margin, markup and selling price.

Pricing & profit

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BRK

Break-even Calculator

Find the sales volume you need to cover costs.

Pricing & profit

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Tax

TAX

Self Assessment Tax Calculator

Estimate Income Tax, Class 4 NI and take-home pay.

Tax & VAT

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MTD

Making Tax Digital Income Tax Checker

Check if and when MTD for Income Tax may apply to you.

Tax & VAT

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Invoicing

INV

Free Invoice Generator UK

Create a UK-ready invoice and download as PDF.

Business documents

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LPI

Late Payment Interest Calculator

Estimate interest and recovery costs on overdue invoices.

Business documents

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VAT

UK VAT Calculator

Add or remove 20% / 5% / 0% VAT instantly.

Tax & VAT

Open tool →

Templates

All templates →

Browse every free PoundKit template.

UK Invoice Template →

A clean, editable UK invoice template you can copy or download.

Quote Template →

Send a professional quote before raising an invoice.

Guides

All guides →

How to calculate profit margin →

How to add and remove VAT →

How to price freelance work →

What to include on a UK invoice →

Data and examples

UK Freelance Rates Dataset →

Benchmark hourly and day rate ranges by profession.

UK Invoice Payment Terms →

Common payment terms and how due dates are calculated.

Data Library →

Every PoundKit dataset in one place.

Worked examples →

See how the calculators apply to real UK scenarios.

Resources

Open Calculator Library →

Transparent formulas and test cases for every calculator.

UK Invoice Checklist →

Free PDF and Word checklist before you send an invoice.

Business Template Pack →

Invoice, quote, pricing and VAT worksheets in one place.

Calculator Formula Library →

Every formula behind the PoundKit calculators.

VAT Calculator Widget →

Embed the UK VAT calculator on your own website.