Everything you need
All your paperwork,
sorted in minutes
Professional Invoices
Create and send CIS-ready invoices in seconds. Your business branding, VAT details, and bank info — all in one clean PDF.
CIS Tax Calculator
See your estimated tax rebate automatically. Know what HMRC owes you before you even visit your accountant.
Track Bills & Expenses
Log every business cost with categories. Fuel, materials, tools — all tracked and ready for your self-assessment.
Works on Your Phone
Built for the building trade. Use it from your van, on site, or anywhere. Install it to your home screen like a native app.
Excel Export
One tap to export all your invoices and bills to a spreadsheet. Email it straight to your accountant at year end.
Tax Year Archiving
Finalise a tax year and archive it with one click. Start the new year fresh — your records are always safe.
Simple by design
Up and running
in three steps
Sign up in seconds
No password to remember. Just enter your email, get a 6-digit code, and you're in.
Add your invoices
Create professional CIS invoices with line items, work dates, and your business details. Send or save as PDF.
Know your rebate
InvoiceMaster calculates your CIS deductions and estimates your tax rebate automatically, year-round.
Designed for tradespeople
Built for the building trade. Not your accountant.
Most invoicing apps are built for office workers. InvoiceMaster is built for people who work with their hands. Big buttons, no jargon, works perfectly on a phone screen — even with muddy gloves.
If you're on CIS, you're likely paying 20% tax at source. InvoiceMaster keeps a running total of what you've paid and estimates your rebate automatically — so you're never caught off guard at self-assessment time.
Professional invoicing for tradespeople
Ready to take control
of your tax?
Join other CIS contractors already using InvoiceMaster to stay on top of their invoicing and tax.
Get started now