What this is really about
The Kleinunternehmerregelung under § 19 UStG is not a legal business structure. It is a special VAT rule for business owners with limited turnover. You can be a sole trader, freelancer, GbR (civil law partnership), or another suitable structure and still need to check whether the Kleinunternehmerregelung is relevant for your VAT situation.
Since 2025, the basic rule is: small business revenues are VAT-exempt if your total turnover in the previous calendar year did not exceed €25,000 and does not exceed €100,000 in the current calendar year. You should not treat these thresholds as growth targets, but as checkpoints for your VAT logic.
For users of this site, the key point is this: the goal is not to rush a tax decision. It is to understand which questions you should answer before filling in the Fragebogen zur steuerlichen Erfassung (the tax registration questionnaire with the tax office), writing your first invoice, and making your first sale.
What changes on your invoices
If you use the Kleinunternehmerregelung, you do not show VAT as a separate line item on your invoices. Instead, your invoice must include a note stating that the supply is exempt from VAT under the small business exemption.
This sounds straightforward, but it can raise questions with B2B customers, marketplaces, EU services, or tool invoices. That is why the Kleinunternehmerregelung should always be thought through together with invoicing, your tax number (Steuernummer), VAT identification number (USt-IdNr.), bookkeeping, and document management.
It is also important to note: the Kleinunternehmerregelung does not mean you can skip documenting your income. Revenue, expenses, receipts, invoices, and profit all remain relevant.
The key trade-off: less VAT admin, but no input tax deduction
The advantage is simpler VAT handling: you generally do not have to remit VAT on your sales, and you can often quote a straightforward final price to private customers.
The disadvantage is the loss of input tax deduction (Vorsteuerabzug). If you invest significantly — for example in goods, equipment, advertising, software, machinery, or furnishings — it can be a drawback that you cannot reclaim the VAT charged on incoming invoices.
So the question is not just: do I want to keep things simple? It is also: who are my customers, how significant are my investments, how quickly could my turnover grow, and how professionally do I need to present myself to business customers?
When the Kleinunternehmerregelung is often a good fit
It can be a good fit if you are starting small as a side business, have few upfront investments, sell mainly to private customers, and expect your turnover to stay modest.
Typical examples include small creative services, first digital products, local services, simple courses, smaller handmade offerings, or a cautious test run before scaling up.
That said, you should not decide purely on gut feeling. Even a small shop can become more complex — tax-wise or organisationally — through platform fees, EU tools, advertising, returns, packaging, and marketplace requirements.
When standard VAT taxation (Regelbesteuerung) is worth considering
Standard VAT taxation (Regelbesteuerung) may be more relevant if you mainly serve business customers, plan larger investments, pay significant VAT on incoming invoices, or expect to grow quickly.
It can also present a cleaner setup if you work long-term with B2B clients, larger projects, recurring contracts, or international arrangements. That does not automatically make it the better choice, but it is worth understanding.
If you voluntarily opt out of the Kleinunternehmerregelung, that decision cannot simply be reversed in the short term. That is precisely why it should not be treated as a quick checkbox, but as a deliberate, informed choice.
Recognising edge cases early
A VAT identification number (USt-IdNr.), reverse-charge questions, EU service providers, marketplace registrations, digital services, platform billing, or selling goods abroad can quickly make the simple Kleinunternehmer story more complicated.
For many local side businesses, this is not a major issue at the start. But for online shops, digital products, creators, marketplace sellers, and software-heavy setups, these questions tend to come up sooner than expected.
The learning path should therefore not say: Kleinunternehmer is always simple. Better to say: Kleinunternehmer can be simple, as long as you know the thresholds and the edge cases.
Questions that may matter for your case
These questions help you classify the topic. In the start plan they are connected to your situation. You can also think through the answers beforehand.
- Are your customers mainly private individuals or businesses?
- How much turnover do you expect in your first year and the year after?
- Are you planning any larger purchases where input tax deduction (Vorsteuer) would be relevant?
- Do you write invoices yourself, through a tool, via marketplaces, or through platform billing?
- Do you use EU service providers, international tools, marketplaces, or digital platforms?
- Is simpler VAT handling more important to you, or do you need the input tax deduction and a clean B2B setup?
Relevant guides
Kleinunternehmerregelung for your side business
Goes deeper into VAT logic, thresholds, invoices, and typical edge cases.
Understanding VAT (Umsatzsteuer)
The Kleinunternehmerregelung is only one part of the VAT question.
Writing invoices
The VAT approach you choose directly affects how your invoices must be written.
Related topics
Taxes
The Kleinunternehmerregelung concerns VAT, but income tax (Einkommensteuer), profit, and receipts remain relevant.
Bookkeeping
Even without showing VAT separately, you still need proper invoices, receipts, and a profit calculation.
Business bank account
Keeping finances separate helps you track turnover thresholds, reserves, and incoming payments.
Tools & Setup
Invoicing tools and bookkeeping software need to match the VAT approach you have chosen.
Helpful next step
Check the small business VAT exemption in practice
The small business VAT exemption affects VAT, invoices, prices, bookkeeping and the tax registration questionnaire.
Where to find official information
For binding information on taxes, legal form, registration, insurance, financing, data protection or other official questions, check the competent bodies or qualified professionals. The links below are good starting points, but not a final review of your case.
From topic to start plan
Is Kleinunternehmer really relevant for you right now?
Topics explain foundations. The start plan asks about your situation and shows whether this topic is actually relevant for your next step.