Your accounting online, with nothing to install
Mast runs in the browser: issue QR invoices, import bank data, keep VAT under control and see your numbers in real time. Hosted in Switzerland, shared with your team and your fiduciary.
Everything online accounting should offer
In the browser, ready right away
No server, no installation, no manual updates: you sign in and work, from any computer.
QR invoicing
Quotes, QR invoices, credit notes and automatic reminders, with posting and no double entry.
Bank data and payments
camt.053 import, pain.001 payments (ISO 20022) and reconciliation that proposes entries and explains why.
VAT under control
The three rates calculated line by line, and a return reconciled with the general ledger, ready to file under the effective method.
Real-time numbers, anywhere
Balance sheet, income statement, cash position and custom dashboards, current every time you sign in, wherever you are.
Together, not in silos
Your team works with roles and permissions, your fiduciary directly in the books, with no files flying around by email.
Swiss hosting, your data
Mast is hosted in Switzerland and built for the revFADP. Your data belongs to you: you can access it at any time and export it.
Frequently asked questions
What is online accounting?
Accounting that runs in the browser instead of on a single computer. You sign in, your numbers are current, and your team and fiduciary work on the same state, with no installation and no file exchanges.
Is online accounting secure?
Mast is hosted in Switzerland and built for the revFADP. Access is set per person with roles and permissions, and you know who can do what.
Do I need to install anything or run a server?
No. Mast runs entirely in the browser. Nothing to install, nothing to maintain, and updates arrive automatically.
Does it work on the go?
Yes. You sign in from any computer and your numbers are up to date, at the office or on the road.
Can my fiduciary access it directly?
Yes. Your fiduciary works in your books with dedicated access: document requests, questions and closing are handled in the app.
What happens to my data if I cancel?
Your data belongs to you. You can export it and take it with you; nothing stays locked in.
How is this different from desktop accounting software?
Installed software ties the books to one computer and one person. Online, everyone with permission works on the same state, in real time, and collaborating with your fiduciary takes no detours.
How much does Mast cost?
Mast is a per-company subscription, monthly or annual. Book a demo and we will show you the platform and the model that fits.
See your accounting in the browser
Book a 30-minute demo: someone from our team walks you through the platform on realistic examples and answers your questions.