Nebentätigkeit in Germany: How to Start a Business Alongside Your Job

Nebentätigkeit means an additional activity alongside your main job. For an employee in Germany, it is often the safest way to test a business idea: your salary remains the financial foundation, while entrepreneurship can grow gradually. But this setup only works if you first check your employment contract, whether your residence permit allows self-employment, the relevant tax thresholds, your health insurance, and the requirements for a Gewerbe.

What counts as Nebentätigkeit

In everyday language, Nebentätigkeit can mean any side activity next to your main occupation: a mini-job, freelancing, a Gewerbe, a blog that earns money, an online store, consulting, or services. In this article, however, it specifically means self-employed activity alongside salaried work.

For the reader, the name matters less than the consequences:

• the employer may need to be notified or give consent;
• a Gewerbe or freiberufliche Tätigkeit must be registered correctly;
• the Finanzamt counts the profit for Einkommensteuer;
• the Krankenkasse checks whether the self-employment has effectively become your main activity;
• foreigners from non-EU countries need the right to carry out self-employed work in their residence permit.

If the project is still small and does not compete with your employer, Nebentätigkeit is usually simpler and safer than an abrupt move into full self-employment.

Employer: when consent is needed

In Germany, an additional activity is not prohibited in itself. But an employee must observe their duty of loyalty to the employer, working time rules, the ban on competition, and the requirements in the employment contract. So the first step is to open the contract and check sections such as Nebentätigkeit, Anzeige, Genehmigung, or Wettbewerbsverbot.

An employer usually cannot ban side work just because they do not like it. Grounds for objection arise if the side business:

• competes with the company;
• interferes with your main job;
• is carried out during working hours or using the employer’s resources;
• violates the Arbeitszeitgesetz because of an excessive overall workload;
• creates a conflict of interest or a reputational risk for the company.

In practice, it is better to notify the employer in writing before registration or before you start selling. In the letter, it is enough to describe the type of activity, the approximate number of hours per week, the absence of competition, and your willingness to stop or change the setup if it begins to interfere with your main job.

Civil servants and some other categories of workers may have stricter notification and approval rules. In such cases, you need to check the Dienstrecht, Tarifvertrag, or the employer’s internal rules.

Rented housing and your home address

Many small Gewerbe are registered at the home address. If the home is rented, the issue depends on how exactly the apartment is used.

Quiet desk work on a computer usually does not create the same risks as receiving clients, storing goods, running a noisy workshop, or constant deliveries. But the rental contract may contain restrictions on commercial use of the apartment. If the activity is noticeable to neighbors or changes the character of the apartment, it is better to obtain the landlord’s written consent in advance.

It is especially important to be careful if the business involves:

• clients visiting your home;
• signage, advertising, or publishing the address;
• storing goods;
• noise, smells, equipment, or frequent deliveries;
• work because of which neighbors might complain about noise.

If the address is needed only for correspondence and the work does not affect the apartment, the risk is lower. But a dispute with the landlord usually costs more than a short written clarification in advance.

Registration: Gewerbe or Freiberufler

The procedure depends on the type of activity. Trade, commercial services, online stores, agency work, and most standard business models are registered as a Gewerbe through the Gewerbeamt. Liberal professions may qualify as freiberufliche Tätigkeit and register directly through the Finanzamt. The details depend on the profession; for orientation, the article about liberal professions is useful.

The process of registering a business in Germany begins with choosing the correct type of activity. For a Gewerbeanmeldung, you usually need:

• a passport or Personalausweis;
• your registration address, meaning Anmeldung;
• a description of the activity;
• where required, a permit, license, or proof of qualifications;
• for non-EU nationals, an Aufenthaltstitel that allows self-employed activity.

After registration, the data is passed on to the Finanzamt, the IHK or Handwerkskammer, and other authorities. The entrepreneur then fills in the steuerlicher Erfassungsbogen and receives the tax settings needed for invoices and tax returns.

Residence permit and the right to do business

EU citizens usually do not need a separate permit for self-employed business activity. For third-country nationals, the decisive factor is the wording in the Aufenthaltstitel or Zusatzblatt.

The safe wording is a clear right to self-employed activity, for example Selbständige Tätigkeit erlaubt. If the document says Selbständige Tätigkeit nicht erlaubt or contains a similar restriction, you cannot simply open a Gewerbe and start working. You first need to contact the Ausländerbehörde and clarify whether the residence condition can be changed.

This is especially important for students, visa-based employees, family members, and people with a recently issued work residence permit. Different residence grounds grant different rights, and a mistake can affect the extension of the document.

Taxes and thresholds in 2026

Nebentätigkeit does not exempt you from taxes. Income and expenses must be tracked, and the profit must be declared in your tax return. For a small business, three blocks matter most: Umsatzsteuer, Gewerbesteuer, and Einkommensteuer.

Umsatzsteuer and Kleinunternehmer

The Kleinunternehmerregelung under section 19 UStG allows you not to charge Umsatzsteuer if the business remains within the statutory turnover limits. In 2026, the thresholds are: total turnover in the previous calendar year did not exceed 25,000 euros, and in the current calendar year it does not exceed 100,000 euros.

This is not an automatic benefit for every situation. When registering, you must make the correct choice in the steuerlicher Erfassungsbogen. In addition, a Kleinunternehmer does not show Umsatzsteuer on invoices and usually cannot claim Vorsteuerabzug on business expenses. If your clients are companies and you have many VAT-bearing costs, it can sometimes be better to work voluntarily with Umsatzsteuer. This is worth discussing with a Steuerberater.

Gewerbesteuer

Gewerbesteuer applies to a Gewerbe, but not to the classic freien Berufe. For Einzelunternehmen and Personengesellschaften, there is an annual Freibetrag of 24,500 euros of Gewerbeertrag. The tax is calculated by the municipality using the local Hebesatz.

It is important to distinguish Umsatz from Gewinn. Turnover can be high, but Gewerbesteuer only arises once the relevant Gewerbeertrag is reached. For a small side business, this tax often does not become a practical problem, but it cannot be ignored as profits grow.

Einkommensteuer

Profit from a Nebentätigkeit becomes part of your total taxable income together with your salary. That is why filing a tax return in Germany becomes mandatory, or at least practically necessary. In the return, this is reported through the relevant annexes, for example Anlage G for a Gewerbe or Anlage S for a freiberufliche Tätigkeit.

Old simplified formulas such as “profit up to 410 euros is tax-free” can be misleading: German tax law has a Härteausgleich for small additional income, but the final outcome depends on the composition of your income and the specific tax return. For planning, it is better not to calculate a “separate business tax,” but the overall Einkommensteuer on the total income of the household or of one taxpayer.

Krankenkasse and pension contributions

If a person remains mainly a salaried employee and the business stays Nebenberuf, statutory health insurance usually continues through the main employment. But the Krankenkasse has the right to assess whether the self-employment has become the main activity.

In practice, the insurer does not look only at hours, but also at the economic weight of the activity. The risk increases if the business brings in more than the salaried job, takes up a significant part of the week, or the entrepreneur has employees. A threshold of around 18-20 hours per week is often discussed as a guideline, but it is not a universal legal switch; it is only one status assessment criterion.

What to do before launch:

• notify the Krankenkasse about the Nebentätigkeit;
• describe the expected hours and expected profit;
• clarify which documents the insurer will request if it reviews your status;
• keep the written reply or at least a note of the consultation.

The situation with pension contributions depends on the activity. A normal small Nebengewerbe alongside salaried work often does not create a separate duty to pay into the gesetzliche Rentenversicherung. But some self-employed professions, such as teachers, educators, caregivers, or certain trades, may be subject to special rules. If the activity falls into such a sector, it is better to check it separately.

IHK, insurance, and ongoing bureaucracy

After Gewerbeanmeldung, an entrepreneur usually receives letters from the IHK or Handwerkskammer. Membership may arise automatically, but the amount of the contribution depends on the chamber, legal form, profit, and beginner status. If you receive a questionnaire, do not ignore it: without a reply, the chamber may calculate the contribution based on its own data.

Additional insurance is not always mandatory, but it is often useful. For the business, it is worth checking separately:

• Betriebshaftpflicht or professional liability insurance if you could cause damage to a client;
• Vermögensschadenhaftpflicht for consulting and digital services;
• legal expenses insurance if there is a risk of disputes with clients or suppliers;
• Unfallversicherung if the activity involves physical work or mandatory membership in a Berufsgenossenschaft.

Private policies that cover everyday household risks usually do not cover business activity. For a separate overview, the topic of commercial insurance in Germany is useful, but the actual policy must be chosen according to the risks of the activity. That is why you cannot automatically extend an ordinary Haftpflichtversicherung to business risks.

Pros of Nebentätigkeit

The main advantage is limited financial risk. If the project does not work out, you can close the business while keeping your main salary. That gives you time to test demand calmly, learn how to handle taxes, build sales, and understand whether entrepreneurship suits you at all.

Nebentätigkeit is especially suitable if you want to:

• test an idea without a loan and without quitting abruptly;
• legalize income from a hobby;
• build a client base gradually;
• deduct justified business expenses;
• understand how much time the project really requires;
• prepare for a full move into Selbständigkeit.

There is also a psychological advantage. When the business does not need to support the family immediately, decisions are often made more calmly. But that can also become a weak point.

Cons and typical mistakes

The Nebentätigkeit format is easy to underestimate. It may seem like a “small thing after work,” but it still comes with bookkeeping, deadlines, letters from authorities, clients, and obligations.

Common mistakes:

• starting sales before checking the residence permit and Gewerbeanmeldung;
• failing to notify the employer even though the contract requires Anzeige or Genehmigung;
• responding to clients during working hours;
• using the employer’s hardware, software, or contacts;
• failing to inform the Krankenkasse about the self-employment;
• issuing invoices incorrectly as a Kleinunternehmer;
• confusing turnover, profit, and taxable income;
• ignoring letters from the Finanzamt, IHK, or Berufsgenossenschaft.

Another risk is lack of time. After a full workweek, the business competes with rest, family, and studies. If the project matters, it is better to define a time limit and a criterion from the start under which you either close the idea or reduce your main working hours.

Short action plan

1. Check your employment contract and your employer’s rules on Nebentätigkeit.
2. Clarify whether the business competes with your main job.
3. If you are not an EU citizen, check your Aufenthaltstitel and your right to self-employed activity.
4. Assess whether you need the Gewerbeamt or whether registration as a Freiberufler through the Finanzamt is enough.
5. If you work from rented housing, check the rental contract and the risks for neighbors.
6. Before registering, decide on the Kleinunternehmerregelung and whether you need a tax adviser.
7. Inform the Krankenkasse about the planned Nebentätigkeit.
8. After registration, handle letters from the Finanzamt, IHK, Berufsgenossenschaft, and other authorities carefully.
9. Keep separate records of income, expenses, invoices, and working hours.

Conclusion

Nebentätigkeit in Germany is a convenient way to start a business without giving up your salary abruptly. But a “business on the side” does not mean there are no rules. The most important checks before starting are: your employer, your residence permit, registration of the Gewerbe or freiberufliche Tätigkeit, the Kleinunternehmerregelung, the Krankenkasse, and the rental terms of your home.

If the activity is regulated, tied to a visa, connected with medicine, education, a trade, financial services, or a high level of responsibility toward clients, it is not enough to rely only on general instructions. In such cases, it is better to obtain written advice in advance from a Steuerberater, the relevant chamber, or the competent authority.