Why this matters
Kleingewerbe, Nebengewerbe and Kleinunternehmerregelung sound alike and mean entirely different things. That is not just a language problem: mixing them up sends you looking for the wrong forms, planning against the wrong thresholds and asking the tax office the wrong question. Ten minutes of sorting at the start saves a lot of confusion later.
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Create start planWhy These Terms Get Confused
The three words describe three different axes of the same undertaking. "Kleingewerbe" says something about the size and organisation of your business. "Nebengewerbe" says something about its relationship to your main job. The Kleinunternehmerregelung is a purely VAT-related decision.
Because all three typically apply to the same person at once, they get used interchangeably in everyday speech. A carpenter restoring furniture on Saturdays alongside a job usually runs a Kleingewerbe, in the Nebenerwerb, and can additionally choose the small-business VAT rule. Three terms, one person, but three separate questions.
This guide is not legal or tax advice. It sorts the vocabulary so you know what you are actually asking about.
Kleingewerbe: A Question of Business Size
A Kleingewerbe is a trade that does not require a commercially organised business operation (§ 1 Abs. 2 HGB). In practice: no entry in the commercial register is needed, and you do not count as a Kaufmann under commercial law.
A whole set of simplifications follows from that: no double-entry bookkeeping, no balance sheet, usually a simple cash-basis profit and loss statement. The HGB obligations for registered merchants do not apply.
Whether your business still counts as small does not hang on a single number but on the overall picture: turnover, number of employees, product range, stock, credit volume, bookkeeping effort. Grow past that threshold and commercial register entry becomes mandatory. You can register voluntarily beforehand (§ 2 HGB) — but then you count as a Kaufmann, with everything that follows.
Important: Kleingewerbe is not a legal form. Your legal form is still sole proprietorship, GbR or something else.
Nebengewerbe: A Question of Your Main Job
"Nebengewerbe" or "Nebenerwerb" describes self-employment running alongside something else: an employed job, studies, parental leave or retirement. The trade registration form has its own tick box for it — Haupterwerb or Nebenerwerb.
The registration procedure itself is identical. Same form, same fee, same confirmation. There is no separate legal form called Nebengewerbe.
The distinction matters elsewhere: with your health insurer, which assesses whether the self-employment is still secondary; with some chamber fees; and with your employment contract. The rules of thumb circulating online — at most 18 or 20 hours a week — are health insurer guidance, not a fixed statutory limit. In case of doubt, your health insurer decides on the overall picture.
Kleinunternehmerregelung: Purely a VAT Choice
The small-business rule under § 19 UStG is something entirely different from a Kleingewerbe. It governs one thing only: whether you show VAT on your invoices and pay it to the tax office.
It depends on turnover thresholds. Since the 2025 reform: anyone whose turnover in the previous year was no more than 25,000 euros and who does not expect to exceed 100,000 euros in the current year can use it. Always check the current figures with the tax office or in ELSTER before planning around them.
The rule is also open to freelancers and has nothing to do with the commercial register. Conversely a Kleingewerbe can very well be liable for VAT, if it exceeds the thresholds or opts for standard taxation voluntarily.
The choice has real trade-offs: no VAT on your invoices also means no input tax deduction on your purchases. With B2B customers or larger investments that can cost more than the effort you save.
What About Freelancers and the Gewerbeschein?
Freelancers are the special case: anyone practising one of the catalogue professions under § 18 EStG — doctors, lawyers, engineers, journalists, many artistic and teaching activities — does not run a trade at all. There is no trade registration and no trade tax, only registration with the tax office.
Whether your activity counts as freelance is not your decision but the tax office's. For borderline cases such as design, consulting, software or coaching, the question is worth asking before you start.
"Gewerbeschein", finally, is colloquial. It refers to the confirmation you receive from the trade office after registering. There is no separate document by that name to apply for.
What This Means for Your Registration
For the trip to the trade office you do not have to choose between Kleingewerbe and Nebengewerbe — the terms do not exclude each other. You tick Nebenerwerb if the activity runs alongside your main job, and the Kleingewerbe property follows from the size of your business anyway.
You do not choose the small-business VAT rule at the trade office but later, in the tax registration questionnaire for the tax office.
So the order is: register the trade with the responsible trade office, then complete the tax registration questionnaire via ELSTER and answer the VAT question there.
Quick checklist
- Does your activity run alongside a main job, studies or retirement? Then tick Nebenerwerb.
- Is your business manageable in turnover, staff and organisation? Then a Kleingewerbe without commercial register entry is likely.
- Could your activity be freelance? Clarify with the tax office before registering a trade.
- Do you know the current § 19 UStG turnover limits and whether they fit your plan?
- Do you have B2B customers or larger purchases planned? Weigh input tax deduction against the saved effort.
- Do you know which trade office is responsible for your home or business address?
Common mistakes
- Treating Kleingewerbe and the small-business VAT rule as the same thing, then planning against the wrong thresholds.
- Believing there is a separate legal form called Kleingewerbe or Nebengewerbe.
- Looking for the small-business VAT rule at the trade office instead of in the tax registration questionnaire.
- Registering a freelance activity as a trade just in case, without clarifying the classification.
- Taking health insurers' hour limits for a law.
- Waiting for a "Gewerbeschein" that does not exist as a separate document.
Frequently asked questions
Is a Kleingewerbe the same as a Nebengewerbe?
No. Kleingewerbe describes the size of the business and the commercial register question, Nebengewerbe its relationship to your main job. Both can apply at once, but need not: a Kleingewerbe can also be run as your main occupation.
Do I need a different registration for a Kleingewerbe?
No. It is the same form and the same office as for any other trade. There is no separate application for a Kleingewerbe.
Am I automatically a Kleinunternehmer if I run a Kleingewerbe?
No. You have to choose the § 19 UStG small-business rule with the tax office, usually in the tax registration questionnaire, and it depends on turnover thresholds. A Kleingewerbe can be liable for VAT.
What does registration cost?
The fee is set by the municipality and is usually a low two-digit amount depending on the location. You can find the exact figure and the responsible office through the trade office finder on this site.
What this guide can and cannot do
This guide helps with
- go through the three terms against your specific plan
- help you phrase the right question for the tax office or your health insurer
- sort whether the VAT question or the employer question comes first for you
This guide does not replace
- decide whether your activity is a trade or freelance work
- tell you bindingly whether to choose the small-business VAT rule
- anticipate your health insurer's assessment of secondary self-employment