Free Tools for UK Tradespeople
Practical calculators and generators built specifically for UK contractors, builders, electricians, plumbers and every other tradesperson running their own business.
100% free — no account required for any tool below.
VAT Calculator
Add or remove VAT from any amount instantly. Supports standard 20% and reduced 5% rates.
Day Rate Calculator
Convert your annual salary or desired income into a daily or hourly contracting rate, accounting for holidays and non-billable days.
Late Payment Calculator
Calculate statutory interest and fixed compensation you can claim under the UK Late Payment of Commercial Debts Act 1998.
CIS Deduction Calculator
Calculate Construction Industry Scheme deductions at 20% (registered) and 30% (unregistered) on your gross labour amount.
Self Assessment Calculator
Estimate your UK self-assessment tax bill including income tax bands, personal allowance, and Class 2 & 4 National Insurance contributions.
Quote Generator
Build a professional quote with line items and totals. Copy the formatted text or use it as a starting point for a client proposal.
Invoice Number Generator
Generate sequential or date-based invoice numbers with a custom prefix. Never duplicate a number again.
Payment Terms Generator
Create clear, professional payment terms text to include on invoices and quotes — tailored to your business.
Invoice Builder
Create a professional PDF invoice in minutes — completely free, no sign-up required. Download and send immediately.
Want automatic invoicing, reminders and payments?
InvoiceAdept brings all these tools together with automated payment reminders, Stripe payments, and cashflow forecasting — so you spend less time chasing money.
Start free trial — no credit card needed