I have a regular day job, however on the side I'm passionate about movement, am qualified to teach some methods and have started doing so on a casual basis. I intend for this to grow.

I teach some evenings at a studio, and the studio owner has told me to register as an entrepreneur with AHV? This is just so that things are all above board and nice and official-like.

I'm all for this, but a little stumped as to what I need to do, and what terminology I need to understand - Mercantile Law isn't my strength.

Is someone who has been through this able to point me in the right direction?

Many thanks.

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We are monkeys with money and guns.

It is social security law.

And here the place where you have to register:
https://www.akzug.ch/produkte/ahv-be...digerwerbende/

Once you make a turnover of CHF 100k per year you must also get a commercial registry entry and a pay/charge VAT.
https://www.kmu.admin.ch/kmu/en/home...gister%20.html

The Ausgleichskasse Zug provides an overview of the self-employment status at this link (German):

https://www.akzug.ch/produkte/ahv-be...digerwerbende/

This sublink starts the self-employment application process for AK Zug (German):

https://form.ahv-iv.ch/orbeon/fr/AK-...dung-SE_v2/new

do you guys know if it's possible, if someone still plans to keep her/his full-time job? (which will still keep paying the social contributions)
He also mentioned a regular job; and I would be in the same shoes.
I would guess some percentage (e.g.20%) should be defined for the sole propretiorship even above the 100%; but would be nice if it's not a must, and only tax would have to be considered for the revene made as an enterprenour.. thx