From sole trader to company: UG and GmbH formation

Moving from self-employment (Einzelunternehmen) to a limited company—either a UG (Unternehmergesellschaft) or a GmbH (Gesellschaft mit beschränkter Haftung)—is the moment when your business gains separate legal identity, limited liability protection, and credibility with banks, investors, and public contracts. This article walks you through the formation process, tax obligations, and the key trade-offs between the two structures.

The Two Structures: UG vs. GmbH at a Glance

Both the UG and GmbH are limited liability companies governed by the same legal framework (GmbHG). The core difference is capital and perception. A GmbH requires a minimum of 25,000 euros share capital (Stammkapital), with at least 12,500 euros paid in at formation. A UG can be founded with as little as 1 euro. But that advantage comes with a cost: the UG must retain 25 percent of its annual profits as a statutory reserve until it reaches 25,000 euros in equity, at which point it can convert to a GmbH. A GmbH has no such profit retention obligation. Beyond the initial setup, both file annual accounts, pay the same corporate taxes (Körperschaftsteuer and Gewerbesteuer), and require a Steuerberater (tax advisor) to manage bookkeeping and compliance.

Formation: The Notarial Process

Step 1: Draft Articles of Association (Gesellschaftsvertrag)

Every GmbH and UG begins with a Gesellschaftsvertrag—the founding document that specifies the company name, registered office, business purpose, share capital, shareholder contributions, appointment of managing directors (Geschäftsführer), and profit distribution rules. For simple structures with up to three shareholders and one managing director, you can use a standardized Musterprotokoll (model protocol), which is cheaper to notarize than a custom agreement. More complex shareholding or governance arrangements require a lawyer-drafted custom Gesellschaftsvertrag. Foreign founders should note that the company name must be distinctive, not misleading, and end with either GmbH or Gesellschaft mit beschränkter Haftung in full. For a UG, the name must include either Unternehmergesellschaft (haftungsbeschränkt) or UG (haftungsbeschränkt)—a requirement that signals lower capital but also reduced credibility to some potential partners.

Step 2: Notarization Before a German Notary

Notarization is mandatory and non-negotiable. You must sign the Gesellschaftsvertrag before a certified German notary (Notar), who certifies the document and verifies the identities of all founders and managing directors. Since August 2022, non-residents can form a GmbH or UG entirely online using video notarization through the Bundesnotarkammer system, or by providing a notarized power of attorney signed abroad and executed by a proxy before a German notary. This has made remote formation practical for expats and foreign founders. The notary will also prepare the commercial register application (Handelsregisteranmeldung) for filing.

Step 3: Open a Business Bank Account and Deposit Capital

After notarization, the next step is to open a dedicated business bank account in the company's name—a Gründungskonto (formation account). For a GmbH, you must deposit at least 12,500 euros; for a UG, technically 1 euro is sufficient, but advisors recommend at least 500 to 1,000 euros so formation costs do not immediately consume the share capital. The bank will issue a Einzahlungsbestätigung (deposit confirmation letter), which the notary includes in the Handelsregister application. Some traditional German banks require in-person visits, but several fintech banks and online-only providers (such as Penta or Qonto) now accept remote account opening for foreign-owned companies.

Step 4: Register with the Commercial Register (Handelsregister)

The notary submits the notarized articles and the capital deposit confirmation electronically to the local commercial court (Amtsgericht) for registration in the Handelsregister. This is a public register maintained by your district court and is where all limited companies (GmbH, UG, AG) are recorded. The Amtsgericht review typically takes one to three weeks depending on the court's workload—Berlin is faster (one to two weeks), Munich slower (two to four weeks). Once registered, your company gains full legal personality and liability protection kicks in. Until registration is complete, the company exists only as a GmbH/UG in Gründung (i.G.), and anyone acting on its behalf carries personal liability.

Step 5: Trade Registration (Gewerbeanmeldung) and Tax Registration

Once registered at the Handelsregister, file a Gewerbeanmeldung (trade registration) with your local Gewerbeamt (trade office). This is separate from the Handelsregister entry—both are required. At the same time, register with the Finanzamt (tax office) using the tax registration questionnaire (Fragebogen zur Steuerfestsetzung) to obtain your Steuer-ID and, if applicable, a VAT identification number (Umsatzsteuer-Identifikationsnummer). You must also join the relevant Chamber of Commerce and Industry (IHK) or Chamber of Crafts (HWK) depending on your sector. If you plan to hire employees, apply for a company number (Betriebsnummer) from the Bundesagentur für Arbeit.

Capital and the UG's Profit Retention Rule

The UG's defining feature—and its limitation—is the mandatory retention of profits. Each year that the UG shows a net profit, 25 percent of that profit must be placed into a statutory reserve (gesetzliche Rücklage). This retained amount cannot be distributed to shareholders; it serves to gradually build the company's equity toward the 25,000-euro minimum. Once accumulated reserves reach 25,000 euros and are recorded on the balance sheet as paid-in capital, the retention obligation ends, and the company can convert to a full GmbH by amending the articles and re-registering. A GmbH has no such obligation and can distribute all profits after tax.

In practice, the UG is a useful temporary structure for very early-stage ventures with minimal capital, or when you want to test a business model. However, the retention rule significantly limits cash available to founders in years of profit—even if the business is cash-flow positive. Many foreign founders and serious domestic entrepreneurs opt to start as a GmbH from the outset, because the 12,500-euro deposit is working capital available for business operations and investment anyway, not money frozen in the bank.

Tax Obligations: Körperschaftsteuer, Gewerbesteuer, and Annual Accounts

Corporate Income Tax (Körperschaftsteuer) and Solidarity Surcharge

Both GmbH and UG pay Körperschaftsteuer (corporate income tax) at a flat 15 percent rate on taxable profit. On top of that is a Solidaritätszuschlag (solidarity surcharge) of 5.5 percent, bringing the effective federal rate to about 15.825 percent. These are filed annually and are due by July 31 of the year following the fiscal year end, or by the end of February if you have a Steuerberater managing the filing.

Trade Tax (Gewerbesteuer)

In addition to corporate income tax, every GmbH and UG pays Gewerbesteuer (trade tax), which goes to the municipality where your business is registered. The rate varies by city: Berlin is approximately 14.35 percent, Munich around 17.15 percent, and smaller towns may be lower or higher depending on their local multiplier (Hebesatz). Unlike sole traders and partnerships, GmbHs and UGs have no tax-free allowance (Freibetrag) for trade tax. The deadline is the same as for Körperschaftsteuer.

Annual Accounts and Filing (Jahresabschluss)

Every GmbH and UG must prepare annual financial statements (Jahresabschluss) comprising a balance sheet (Bilanz), profit-and-loss statement (Gewinn- und Verlustrechnung or GuV), and notes (Anhang). These must be filed with the Unternehmensregister (Federal Company Register) within 12 months of the fiscal year end. For a calendar year company, the deadline is December 31 of the following year. The Unternehmensregister became the central filing point for financial years beginning after December 31, 2021; earlier filings still went to the Bundesanzeiger. Missing the deadline can result in fines starting at 2,500 euros and escalating steeply.

Most early-stage GmbHs and UGs qualify as micro-companies under German law, which means they can submit simplified financial statements. However, even micro-companies must file; there is no exemption. You must also submit accounts separately to the Finanzamt for tax purposes as an electronic E-Bilanz alongside the corporate tax return.

Importance of a Steuerberater

German tax law is complex, and bookkeeping rules (HGB) differ from tax rules. While smaller businesses can handle day-to-day bookkeeping themselves using software (SKR03 or SKR04account plans), nearly all GmbH and UG founders work with a Steuerberater (tax advisor) for annual account preparation, tax optimization, and compliance filing. A Steuerberater does more than file returns—they review your bookkeeping, adjust entries for tax purposes under the Maßgeblichkeitsprinzip, and can provide the electronic signature to extend tax filing deadlines from July 31 to February of the following year. The cost typically ranges from 1,000 to 3,000 euros annually for a startup-sized company, but this is a business expense and is fully tax-deductible.

Employment, Salary, and Social Insurance

Paying Yourself as Geschäftsführer

As the managing director (Geschäftsführer) and owner of your GmbH or UG, you can employ yourself and draw a salary. This salary is a Betriebsausgabe (business operating expense) and is fully deductible from the company's taxable profit, reducing your Körperschaftsteuer. However, the salary you pay yourself is subject to income tax withholding and social insurance contributions—the same as for any employee.

Social Insurance Status for Controlling Shareholders

Here is where the rules become subtle. If you are a controlling shareholder-managing director (beherrschender Gesellschafter-Geschäftsführer)—meaning you hold 50 percent or more of the shares—you are typically exempt from mandatory social insurance contributions (pension, unemployment, accident insurance). This saves employer and employee contributions of roughly 20 to 21 percent combined. However, this exemption means you have no state safety net: if you become unable to work, the state provides no disability pension (Erwerbsminderungsrente). Many controlling GmbH owners purchase private disability insurance to cover this gap, though premiums are paid from personal (already-taxed) income and offer limited tax deduction.

Minority shareholder-managing directors do contribute to the social insurance system and receive its protections. If you hold less than 50 percent, contributions are mandatory. The employer (your company) contributes roughly half; the employee (you) contributes the other half through payroll withholding.

Payroll and Withholding

As an employer, your company must withhold income tax (Lohnsteuer) and social insurance contributions from your salary and remit them to the Finanzamt and relevant insurance agencies. You must register with the local tax office (Finanzamt) as an employer and obtain an employer identification number. Every month you must file a wage tax declaration (Lohnsteueranmeldung) if you have employees. This is a strict compliance obligation—late or incorrect withholding attracts severe penalties.

Practical Costs and Timeline

Formation costs vary by structure and complexity. For a simple GmbH or UG using the Musterprotokoll with one to three shareholders and one managing director, notary fees are typically a few hundred euros. A custom Gesellschaftsvertrag drafted by a lawyer costs several hundred euros more. Handelsregister court fees are around 150 euros for the initial registration. Bank account opening is free or minimal. Altogether, expect total formation costs of 500 to 1,500 euros for a straightforward GmbH or UG.

Timeline: From notarization to Handelsregister entry typically takes two to four weeks. The notary submits electronically the same day; the court review takes one to three weeks. With pre-arranged capital deposit and if you are abroad using a notarized power of attorney, total time from lawyer or service-provider engagement to full registration is three to five weeks.

When to Choose GmbH vs. UG

• Choose UG if capital is genuinely the binding constraint, the business generates revenue quickly, and the 25 percent profit retention does not materially affect cash flow in year one.
• Choose UG if you want to test a business model with minimal upfront capital and plan to convert to GmbH within a few years once the company is profitable.
• Choose GmbH if you can raise 25,000 euros and need maximum credibility from day one—with banks, investors, landlords, or visa authorities. The 12,500-euro deposit is working capital, not frozen money.
• Choose GmbH if you plan to hire employees, secure commercial contracts, or seek investor funding—the UG's lower capital signals higher risk and may limit options.
• Choose GmbH if you want to distribute profits freely without the 25 percent retention constraint.

Foreign Founders and Residence Permits

Forming a GmbH or UG as a foreign national requires a German business address but does not require German residency. Many expats form companies while living abroad and register a virtual office address (Anschrift) in Germany—the company must be reachable and mail must be handled genuinely. If you later move to Germany, you will need a residence permit (Aufenthaltstitel) valid for employment or self-employment. EU/EEA citizens enjoy freedom of movement; non-EU citizens typically need a self-employment or freelancer residence permit (Aufenthaltstitel zur Ausübung einer selbstständigen Tätigkeit), issued by the Ausländerbehörde (immigration office) upon proof of business registration, business plan, and sufficient capital. Owning a GmbH generally demonstrates greater financial credibility to visa authorities than a sole proprietorship and can strengthen your residence permit application.

Next Steps: Staying Compliant

Once registered, your obligations are ongoing. Open a business bank account immediately to keep business and personal finances separate. Engage a Steuerberater to oversee bookkeeping and tax filing. Set up accounting software and maintain daily records. File quarterly trade tax (Gewerbesteuer) advance payments and corporate tax advance payments (Vorauszahlungen) by the 10th of March, June, September, and December. File a monthly or quarterly VAT return (Umsatzsteueranmeldung) if you are VAT-registered, plus an annual VAT reconciliation. At year-end, prepare and file your annual accounts and tax returns by the deadline—missing these deadlines triggers automatic fines. Register for social insurance (Berufsgenossenschaft) if you have employees, and maintain accurate personnel records.

The transition from sole trader to limited company is not merely a legal formality—it is a milestone that signals professionalization, protects your personal assets, and opens doors to credit, contracts, and investment. Take time to understand the rules, engage competent advisors, and maintain discipline. The effort pays off in reduced risk and increased opportunity.