About KaiInvoice
Invoice & trade management for UK professionals
KaiInvoice helps UK tradespeople create professional invoices and estimates, track jobs, and get paid faster — without wrestling with spreadsheets or generic accounting software.
Built with UK-specific features including VAT, CIS deductions, deposit handling, and bank details on every document. Whether you are a sole trader or a small team, KaiInvoice keeps your paperwork in one place.
Built for trades
Plumbing, heating, electrical, and general building — workflows designed for how you work on site.
UK-first
GBP, UK VAT rates, CIS, and formats your customers expect — not US-centric templates.
KaiInvoice is developed by MPJL Plumbing Heating Electrical, Bradford — real tradespeople who understand the admin burden of running a busy site.