Ditch the paperwork. Go digital.
GasTac lets you create invoices, CP12s, and more — sent directly to your customers. Save time and money on every job.
Everything you need on every job
GasTac packs all the tools a gas engineer needs into one simple app.
Digital Invoices
Create professional invoices on-site and email them directly to your customers. No more chasing paper.
CP12 Certificates
Generate landlord gas safety certificates and send them straight to your customer's inbox. Instant and compliant.
Calendar & Job Notes
Keep your schedule organised with an integrated calendar. Add job notes and upload photos for every appointment.
Gas Rate Calculator
Quickly calculate gas rates on-site. No mental maths, no mistakes — just accurate results every time.
Pipe Sizing Calculator
Size gas pipes correctly with the built-in calculator. Fast, reliable, and always to hand when you need it.
Save Time & Money
No more printing, posting, or losing paperwork. Everything digital, everything instant. More jobs, less hassle.
Ready to go paperless?
Join gas engineers across the UK who are saving time and money with GasTac. It's free to get started.