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It's never
been faster
to fill in your tax return

onetax.ch is the intelligent online tax return software for everyone.

2021 Tax return available for the canton of Lucerne.

Free of charge

why onetax.ch?


Easy to use

Digital processing. No paperwork. Understandable.


Saves time

The fastest way to fill your tax return.


Automatic completion

No more tedious typing. Everything digital.


Artificial intelligence

Support with intelligent algorithms.


Data security

Highest Swiss security standards.

how does onetax.ch work?

onetax.ch is an online tax return software which, thanks to smart algorithms and artificial intelligence, allows you to complete your tax return faster than any other tax software solution. It is easy to use and you can submit your tax return in just five steps:


Register at onetax.ch.


Upload your previous year's tax return file.


Conveniently scan your documents with your smartphone or upload your documents as a PDF.


Complete your tax return prepared by onetax.ch.


Securely submit your tax return to the tax office with one click.


onetax.ch makes the difference

existing solutions

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Direct submission to the tax office

Intelligent document handling

Practical tax tips can be discussed in a moderated community forum

Simple, user friendly, automated operation

Data extraction from documents with artificial intelligence

Document upload via smartphone or tablet

The fastest tax return on the market