The short version
Testing an idea alone with little financial risk? Start as a sole proprietorship. Want limited liability without tying up €25,000? The UG is the realistic entry point. Raising investment, taking on real financial risk, or want the credibility of "GmbH" on your letterhead? Go straight to a GmbH — converting later is more expensive than it looks.
The three structures at a glance
| Aspect | Sole proprietorship | UG (haftungsbeschränkt) | GmbH |
|---|---|---|---|
| Minimum capital | None | €1 in theory, a few hundred to a few thousand in practice | €25,000, at least half paid in at formation |
| Personal liability | Unlimited, with your private assets | Limited to company assets | Limited to company assets |
| Formation | Register with the Finanzamt, days | Notary and Handelsregister, a few weeks | Notary and Handelsregister, a few weeks |
| Bookkeeping | Often simple (EÜR), below certain thresholds | Double-entry, required | Double-entry, required |
| Taxation | Personal income tax, roughly 14–45% | Corporate and trade tax, roughly 30% combined | Corporate and trade tax, roughly 30% combined |
| Profit retention rule | None | Must retain 25% of annual profit until reserves reach €25,000 | None |
| Perceived credibility | Lower with larger clients and investors | Mixed — some read "haftungsbeschränkt" as a caution flag | Highest |
Sole proprietorship (Einzelunternehmen)
This is the default if you register as a Freiberufler or a Gewerbetreibende without setting up a company — see our guide on starting a business in Germany for how that split works. It is fast, cheap, and the bookkeeping can often stay simple below certain turnover and profit thresholds.
The trade-off is unlimited personal liability. If the business owes money, so do you, with your private savings and possessions on the line. It also tends to carry less weight with larger corporate clients and is a non-starter for most investors.
UG (haftungsbeschränkt): the realistic entry point
The UG is not a separate legal form in its own right — it is a GmbH variant defined in the same law, created specifically to let founders access limited liability without €25,000 in capital. Its full name, Unternehmergesellschaft (haftungsbeschränkt), must appear on everything from invoices to your website's Impressum, which is a constant, mild reminder to clients that you started small.
The capital saving does not extend to the paperwork: a UG follows the same notarisation, double-entry bookkeeping, and annual filing rules as a full GmbH. Its one real obligation the GmbH does not have is the profit retention rule — a quarter of each year's profit must stay in the company until accumulated reserves hit €25,000, at which point it can convert into a regular GmbH.
GmbH: full protection, full formality
The GmbH is Germany's standard limited liability company, and the structure most investors and larger clients expect to see. It requires notarised articles of association and at least €25,000 in registered share capital, half of which must be paid in before the company is entered in the Handelsregister.
In exchange, you get liability limited to company assets, the most credible letterhead of the three options, and the share structure needed to bring in co-founders or outside investors cleanly. The cost is ongoing formality: double-entry bookkeeping, an annual Jahresabschluss published in the Bundesanzeiger, and — for the managing director — personal exposure if certain tax or insolvency duties are missed. Our GmbH bookkeeping checklist covers exactly what that ongoing side looks like month to month.
Three questions that actually decide it
How much personal risk are you carrying?
A freelance designer invoicing a handful of clients carries a different risk profile from someone signing large supplier contracts or holding physical stock. The bigger the numbers on your contracts, the more a limited-liability structure earns its keep.
How much admin can you realistically run?
A sole proprietorship's bookkeeping can be handled in an evening a month. A UG or GmbH means double-entry bookkeeping, an annual balance sheet, and typically an ongoing relationship with a Steuerberater. Be honest about whether you have the time, money or appetite for that before you commit.
Are you planning to raise money or bring in co-founders?
If a cap table, employee share options, or outside investment are anywhere on your roadmap, start with a GmbH. Restructuring a sole proprietorship or even a UG once investors are already at the table adds legal cost and delay at the worst possible time.
The expensive mistake: switching too late
Converting a running, profitable sole proprietorship into a GmbH is not a simple relabeling exercise. The business itself, including the goodwill (Geschäfts- oder Firmenwert) you have built up — your client relationships, reputation and brand — can be treated as an asset being transferred into the new company. Structured carelessly, that transfer can trigger a tax bill on value that has never actually been paid out to you in cash.
Get advice before you decide, not after. A short conversation with a Steuerberater or notary about your growth plans at the outset is far cheaper than restructuring an established business under time pressure once investors or major contracts are already in motion.
Frequently asked questions
Is a UG really only 1 euro to start?
One euro is the legal minimum, but most founders put in a few hundred to a few thousand euros to cover early costs. The company must also retain 25% of its annual profit each year until reserves reach €25,000.
Can I convert a UG into a GmbH later?
Yes. Once retained reserves reach €25,000, the UG can increase its share capital and convert into a full GmbH, dropping the haftungsbeschränkt suffix.
Do I pay less tax with a sole proprietorship or a GmbH?
It depends on your profit level. Sole proprietors pay personal income tax at 14–45%, which can be lower at modest profits. A GmbH pays roughly 30% combined corporate and trade tax, and profit taken out personally is taxed again — but at higher profits the GmbH's flat rate often wins.
Does a GmbH protect my personal assets completely?
Mostly, but not entirely. Liability is limited to company assets for ordinary business debts, but a managing director can still be personally liable for unpaid taxes, missed social security contributions, or filing for insolvency too late.
Which structure do investors prefer?
Investors overwhelmingly prefer a GmbH, since it allows a proper share structure and cap table. Many will not invest in a sole proprietorship at all, and some are hesitant about a UG until it has converted to a full GmbH.