Start a business on the sideOn the side
Start for free
How it works

What a side business involves.
And what planix sorts out.

Every item in Switzerland – with the document it is in.

Every item with its document.

Start for free
What’s involved

planix sorts out 4 of 6 items.

You do the rest yourself.

Employment contract: side work allowed?ContractYou–
Offer, target customer, calculation per saleYour ideaplanixYour idea
Test: is there something to the idea?Concept testplanixYour concept test
Legal form and founding stepsLegal formplanixYour founding plan
AHV, taxes and VATAHV and taxesplanixYour founding plan
Registration with the compensation officeAHV registrationYou–

Sources: AHV-Ausgleichskasse: Merkblatt 2.02 AHV/IV, bsv.admin.ch, Stand 01.01.2026 · kantonales Handelsregisteramt: Art. 931 OR; Art. 36 HRegV, kmu.admin.ch, Stand 28.09.2026 · ESTV: Art. 66 MWSTG, kmu.admin.ch, Stand 28.09.2026

The path

Quitting comes last.

Five steps – registering is required, quitting is not.

  1. FirstRead your contract

    What your employment contract says about side work – before your first customer.

    What your contract says.

  2. With planixSharpen the idea

    What you sell to whom – with the time and budget you have next to your job.

    With your time and budget.

  3. With planixTest

    A concept test shows whether there is something to it before you invest money.

    Before you invest.

  4. RequiredRegister with the AHV

    As a self-employed person, with the compensation office.

    With the compensation office.

  5. LaterGrow

    Your job stays until your business carries you. You choose the moment.

    Job stays until it carries.

Result

Three documents. One venture.

Each module takes over what you entered before.

Develop the ideafree

Your idea

Web · PDF · Word

Your idea on one page – and as a Business Model Canvas.

  1. 1At a glance
  2. 2Value proposition and target customer
  3. 3Problem and differentiation
  4. 4Business model
  5. 5Business Model Canvas
  6. 6What is still open

Plus the canvas as a Word file.

Start Develop the idea
Test your ideafree

Your concept test

Web · PDF

What 10 simulated respondents say about your idea.

  1. 1Starting point
  2. 2Result of the concept test
  3. 3Scope and assumptions
  4. 4Questions for real conversations
  5. 5Your next steps

Simulated respondents are marked as such.

Start for free
Start a businessfree

Your founding plan

Web · PDF · Word

Legal form, registrations and obligations – for your side business.

  1. 1At a glance
  2. 2Legal form
  3. 3Founding roadmap
  4. 4Taxes and accounting
  5. 5Social insurance and staff
  6. 6Your next steps

Every number with office and source.

Start now
Afterwards

Seamlessly on in the founder journey.

What you enter stays in your account. Business plan and first customers build on it.

Everything stays in your account.

  1. IdeaFind your business idea · Develop the idea
  2. ValidationTest the idea · Test the market
  3. PlanningBusiness concept, business plan, funding
  4. FoundingFound and protect your company
  5. GrowthGo-to-market · Investors · Scaling

View the whole founder journey

Supported by leading start-up experts and partners

ConsultingNetworkSwitzerland.
swissstartupassociation+
SWISS DESIGN
& ENGINEERING
NVIDIA Inception Program
collumino.com
STARTUPS
EXPERTSuisse
Buchhaltungs AG
DACH Startups

Start on the side?
Begin tonight.

The idea first. Test and registration when you’re ready.

Start for free All three modules free · no subscription