Mastro is a Swiss trade software for site management with a native bexio integration. It connects the work on site — quote, job, delivery — to your bexio accounting, so you don't enter contacts, quotes and invoices twice.
More than 100,000 Swiss SMEs now run their admin on bexio, and SMEs make up over 99% of all Swiss businesses. If you're a trade business, the odds are your accounting already lives in bexio — the question is only how much double-entry sits between the site and the ledger.
How does the Mastro bexio integration work?
Mastro connects to your account through bexio's official sign-in (OIDC) and keeps data moving in both directions:
- Contacts, quotes and invoices from bexio are pulled into Mastro on a regular schedule (every few hours), so your pipeline reflects the latest state.
- Accepted quotes in Mastro are pushed to bexio as a draft offer.
- Completed jobs create a draft invoice in bexio for you to review and send.
bexio stays your accounting source of truth while Mastro runs the operational site business — with no copy-paste between two systems.
What gets synced?
| Data | Direction | Trigger |
|---|---|---|
| Contacts | bexio → Mastro | Scheduled sync |
| Quotes | bexio ↔ Mastro | Sync + on quote acceptance |
| Invoices | bexio → Mastro | Scheduled sync |
| Invoice | Mastro → bexio | Job completed (draft) |
Who is it for?
Swiss trade SMEs already using bexio who want to digitise the site side — plumbers, painters, electricians, carpenters, tilers and general contractors, starting in Basel and German-speaking Switzerland.
Do I have to change my accounting?
No. bexio stays your accounting. Mastro sits in front of it: quotes, communication and site management happen in Mastro, while the accounting truth stays in bexio. You connect the two once and keep working in both as usual.
Sources
- bexio, 100,000 Swiss SMEs rely on bexio (2026).
- SECO / Federal Statistical Office, SME facts & figures — SMEs are 99%+ of Swiss firms.
Note: connection details and triggers may evolve as the product develops. Want to see the bexio integration live? Book a demo.