Tax Tip #6 – Taxes for the Self-Employed and Sole Proprietors

Being self-employed means freedom – but also responsibility. Especially when it comes to taxes.

Starting a sole proprietorship in Switzerland is a major career milestone and often the first step into entrepreneurship.
It brings flexibility, independence – and new financial obligations.

FIN explains what matters most, how to make the most of your tax deductions, and how to plan your tax return strategically as a sole proprietor.

What Is a Sole Proprietorship – and What Counts as Self-Employment?

A sole proprietorship is the simplest and most flexible form of self-employment in Switzerland.
As the owner, you are personally responsible for all business decisions and risks – without shareholders or partners.

This independence provides great freedom, but it also requires careful planning – particularly in taxation, insurance, and bookkeeping.

Steps to Starting a Sole Proprietorship in Switzerland

1. Develop your business idea
   Build on a viable concept that meets market demand and fits your expertise.
   
   
2. Conduct market research
   Understand your audience, your competition, and your market potential.
   
   
3. Create a business plan
   Structure your vision, goals, and financial framework clearly.
   
   
4. Plan your budget
   Estimate your costs and investments – and evaluate their added value carefully.
   
   
5. Register with the AHV
   Sign up early with your compensation office.
   Contributions to AHV, IV, EO and ALV are mandatory – and late payments can be costly.
   
   
6. Take out insurance
   
   • Professional liability insurance protects you from business-related risks.
     
   • Legal protection insurance can be valuable for reviewing contracts or drafting general terms and conditions (AGB).
     
     

Tax Deductions for the Self-Employed and Sole Proprietors

One of the biggest advantages of self-employment is that you can deduct business expenses from your taxable income.
Here are the key categories:

Business Expenses

• Rent or leasing of business premises
• Utility costs (e.g., electricity, water, heating)
• Office supplies and equipment (e.g., computers, printers, software)
• Travel expenses (e.g., airfare, hotel costs, mileage)
• Communication costs (e.g., phone, internet)
• Advertising and marketing (e.g., online ads, print materials)
• Insurance (e.g., liability insurance)
• Vehicle costs (e.g., leasing, maintenance, fuel for company vehicles)
• Employee costs (wages, social security contributions)
• Continuing education expenses
• Depreciation on assets (e.g., machines, vehicles)
• Legal and advisory fees (e.g., tax advisors, lawyers)
• Bank fees and interest on business loans
• Membership fees for professional associations
• Costs for maintaining and repairing business assets
• Software and cloud services
• Waste disposal and recycling costs
  

Tip:
Use Smart eTax to store all receipts digitally and securely.

A simple Excel overview can help:
Date | Purpose | Amount | Notes

For business meals, always note the names of attendees on the receipt – tax authorities require it.

Key Deductions for Sole Proprietors

Social Security Contributions

Payments to AHV, IV, EO, and ALV are fully deductible.
Be sure to register early and adjust your contributions according to your actual income.

Depreciation

Investments in machinery, vehicles, or equipment can be depreciated over several years, reducing your taxable income over time.

Value Added Tax (VAT)

If your annual turnover exceeds CHF 100,000, you are subject to VAT.
You must remit the VAT you collect but can deduct input VAT paid on business expenses.

Retirement Savings

Contributions to the pension fund (2nd pillar) and pillar 3a are fully deductible – a smart way to optimise taxes, especially in high-income years.

Involving Your Spouse

If your spouse works in the business, you may deduct salary or travel costs, and in some cantons, even claim special allowances for joint work.

Keep Your Records Clean and Separate

Strictly separate personal and business expenses.
A dedicated business account is essential for transparency and financial clarity.

Digital tools simplify bookkeeping, letting you store, organise, and access documents anytime.

Selling or Closing a Sole Proprietorship

When selling or closing your business, a liquidation tax applies.
Capital gains on business assets are taxable, while gains on private assets are usually tax-free.

Also, keep an eye on private deposits and withdrawals – they can impact your tax position.

Filing Your Tax Return as a Sole Proprietor

Tax returns for the self-employed can be complex and differ by canton.
It’s worth consulting an expert familiar with local tax laws and the structure of sole proprietorships.

FIN recommends:
→ Plan early
→ Keep records digital and complete
→ Seek professional advice to unlock all tax benefits

Conclusion: Structure Creates Financial Freedom

As a self-employed professional, you carry responsibility – but also many opportunities.
With careful planning, clean bookkeeping, and smart use of deductions, you can significantly reduce your tax burden.

With FIN, you stay organised, independent, and financially efficient.

FIN – Clarity, efficiency, and real independence for the self-employed.