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Dissolving a Sole Proprietorship in Switzerland: Step-by-Step Guide

Deregistering and dissolving a sole proprietorship: From commercial register deletion to OASI and VAT deregistration to the final tax return. All steps and deadlines.

e
einzly Redaktion
Tax & Finance Editorial
7 min read
2 Mar 2026

01When and Why Dissolve a Sole Proprietorship?

Dissolving a sole proprietorship is significantly less complicated than for a GmbH or AG -- there is no liquidation procedure and no creditor waiting periods. Nevertheless, you should go through the process carefully to ensure you do not overlook any outstanding obligations and do not risk disadvantages regarding taxes or social insurance. If you are just getting started, read our article on setting up a sole proprietorship first.

Typical reasons for dissolving a sole proprietorship:

  • Giving up self-employed activity (returning to employment)
  • Retirement or health reasons
  • Financial difficulties or lack of profitability
  • Conversion into a GmbH or AG (not a dissolution in the strict sense, but a transfer)
  • Moving abroad
  • Sale or handover of the business
No formal liquidation requiredUnlike corporations (GmbH, AG), there is no legally prescribed liquidation procedure for sole proprietorships. The sole proprietorship ends legally when you cease business activity. Nevertheless, you must deregister with various authorities.

02Step by Step: Correctly Deregistering a Sole Proprietorship

To ensure the dissolution proceeds smoothly, a clear sequence is recommended. The following steps cover all essential deregistrations and obligations.

1
Complete open orders and contracts:

Finish all ongoing client orders or arrange a clean handover. Terminate ongoing contracts (office lease, software subscriptions, supplier contracts) within the notice periods. Check the notice periods -- some contracts require 3 to 6 months' advance notice.

2
Collect outstanding invoices:

Ensure all outstanding receivables are paid. Send reminders if necessary. Outstanding claims do not expire upon dissolution, but collection becomes more complicated.

3
Apply for deletion from the commercial register (if registered):

If you are registered in the commercial register, you must apply for deletion at the cantonal commercial register office. The deletion is published in the SHAB (Swiss Official Gazette of Commerce). Costs: depending on the canton CHF 50--150. Legal basis: OR Art. 934 Para. 1, HRegV Art. 39. Find out more in our article on the commercial register entry.

4
OASI compensation office: Deregister as a self-employed person:

Deregister with your cantonal compensation office. Provide the exact date of cessation of activity. The office will prepare a final statement of the definitive OASI/DI/APG contributions. Previously paid provisional contributions will be offset.

5
VAT deregistration with the FTA:

If you are VAT-liable, deregister with the Federal Tax Administration (FTA). You must submit a final VAT return for the period up to the cessation of business. Note: Own consumption tax on remaining business assets (Art. 31 MWSTG).

6
Cancel insurance policies:

Cancel business insurance: professional liability, business liability, daily sickness allowance, voluntary UVG, property insurance. Check whether you still need your own UVG accident insurance (transition period).

7
Submit the final tax return:

In the next tax return, you declare the business result up to the dissolution date. Attach the final income statement and balance sheet (or income-expense statement closing). Liquidation gains are taxable income.

03Outstanding Invoices and Debts upon Dissolution

A common misconception: Dissolving the sole proprietorship does not release you from outstanding debts. Since the sole proprietorship is not a separate legal entity, you are personally liable for all obligations -- even after cessation of business.

  • Outstanding creditors (supplier invoices) must be paid
  • Loans and credit lines continue until they are repaid
  • OASI back-payments can be claimed retroactively for up to 5 years
  • Tax debts remain and cannot be written off
  • Lease agreements remain valid until the end of the notice period
Personal assets remain liableSince as the owner of a sole proprietorship you have unlimited personal liability, creditors can access your personal assets even after the dissolution. Before ceasing business, ensure all debts are settled -- or make written agreements with creditors.

04Document Retention: 10-Year Obligation

Even though the sole proprietorship no longer exists, you are legally required to retain business documents and accounting records. The retention obligation is ten years from the last financial year pursuant to OR Art. 958f. This applies regardless of whether you were registered in the commercial register or not.

The following documents must be retained for 10 years:

  • Accounting books and records (invoices, receipts, bank statements)
  • Annual financial statements (income-expense statement or balance sheet/income statement)
  • VAT returns and correspondence with the FTA
  • Business contracts and T&Cs
  • Payroll records (if you had employees)
  • Tax returns and tax assessment notices
  • Correspondence with the OASI compensation office
Archive digitallyYou are permitted to retain records digitally, provided integrity is ensured (GeBuV Art. 9). Scan paper records and save them on at least two different storage media. einzly stores all records in an audit-proof manner in the cloud -- even after cancellation, they remain accessible during the retention period.

05Tax Aspects of the Dissolution

The dissolution of a sole proprietorship has tax consequences that should not be underestimated. The profit of the last financial year is taxed together with your other income. In addition, there may be liquidation gains. How to correctly submit the final tax return for your sole proprietorship is explained in a separate article.

  • Final business profit: Is combined with your personal income and taxed at the ordinary rate (DBG Art. 18)
  • Liquidation gain on hidden reserves: If you transfer fixed assets (e.g. vehicle, machinery) to private assets at market value, a taxable gain arises on the difference to the book value
  • Revaluation of inventory: Remaining goods must be valued at fair market value -- the revaluation is taxable income
  • Own consumption tax (VAT): Business assets that you continue to use privately are subject to own consumption tax pursuant to Art. 31 MWSTG
  • OASI on liquidation gain: OASI contributions are due on the liquidation gain -- it counts as income from self-employed activity
Privileged taxation upon cessation after age 55Those who give up self-employed activity after the age of 55 or due to disability benefit from privileged taxation of liquidation gains. These are taxed separately from other income and at a reduced rate (DBG Art. 37b). Since 2011, the liquidation gain is treated as though it had accrued over several years.
Tax AspectLegal BasisRemark
Final business profitDBG Art. 18Ordinary income tax
Liquidation gain (hidden reserves)DBG Art. 37bPrivilege from age 55 / disability
Own consumption tax (VAT)MWSTG Art. 31On business assets transferred to private use
OASI on liquidation gainAHVG Art. 9Contribution obligation on total income

06Alternative: Conversion into a GmbH

Before dissolving your sole proprietorship, it is worth considering: Would a conversion into a GmbH be the better option? A conversion (more precisely: a contribution in kind or asset transfer) can be structured in a tax-neutral manner -- provided the conditions are met.

Reasons that favour conversion over dissolution:

  • You want to limit liability to the share capital (no more personal risk)
  • Your turnover is growing and you need a more professional structure
  • You want to involve employees as stakeholders or take on partners
  • Tax optimisation: As a GmbH managing director, you pay yourself a salary and can distribute dividends
  • Succession planning: A GmbH is easier to sell or transfer
Tax-neutral conversionPursuant to the Merger Act (FusG Art. 69 ff.), the transfer of a sole proprietorship into a GmbH can be carried out in a tax-neutral manner if the book values are retained and the taxable hidden reserves are not released. Be sure to seek advice from a fiduciary for this.

The conversion process: You establish a GmbH (share capital minimum CHF 20'000, notarial authentication), transfer the assets and liabilities of the sole proprietorship by means of a contribution in kind agreement, and subsequently delete the sole proprietorship from the commercial register. Contracts with clients and suppliers generally transfer to the GmbH -- but check the individual contract terms.

07Close out cleanly with einzly

Even if you are giving up your business, you need a clean close-out. The final tax return, the last VAT return and the archiving of records must not fall by the wayside.

einzly helps you with an orderly close-out:

  • Final annual accounts at the push of a button: Export the income-expense statement and income statement up to the dissolution date as PDF
  • Outstanding receivables at a glance: Instantly see which invoices are still outstanding and send reminders directly from einzly
  • Final VAT return: The last VAT period is calculated automatically, including own consumption
  • Document archive: All records remain stored digitally and meet the 10-year retention obligation
  • Export for your fiduciary: All data as a ZIP export for the concluding consultation
Even for the final close-outEven if you only use einzly for the final close-out of your sole proprietorship -- it is worth it. Record the last months, prepare the final statement and archive everything cleanly. Try free for 30 days.

08Frequently Asked Questions about Dissolving a Sole Proprietorship

Legally, the sole proprietorship ends when you cease business activity. However: You must deregister with the OASI compensation office, deregister from VAT (if registered), have yourself deleted from the commercial register (if registered) and correctly submit the final tax return. Without these steps, contribution obligations continue.
The deregistration itself takes just a few days. The commercial register deletion takes approx. 1--2 weeks. The final VAT return must be submitted within 60 days after the end of the last accounting period. Plan on 1--3 months in total until everything is settled.
Yes. If you were VAT-liable and continue to use business assets (inventory, vehicle, fixtures) privately, own consumption tax applies (Art. 31 MWSTG). The tax base is the fair market value at the time of transfer to private assets.
Yes. You can establish a new sole proprietorship or resume your previous activity at any time. You re-register with the OASI compensation office and, if applicable, re-register in the commercial register. There is no waiting period.
After deregistering as a self-employed person, you receive a final statement of the definitive OASI/DI/APG contributions. If you become an employee again, you pay through the employer. Without gainful employment, you are liable for contributions as a non-employed person (minimum contribution CHF 514/year, as of 2025). A contribution gap can reduce your future OASI pension.
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