Freiberufler or Gewerbe?

Germany sorts every self-employed person into one of two boxes: Freiberufler, earning Einkünfte aus freiberuflicher Tätigkeit under §18 EStG, and Gewerbetreibende, running a commercial business under §15 EStG. You do not choose. The Finanzamt decides on what you actually do, using the activity description you write in your Fragebogen zur steuerlichen Erfassung.

There are four ways into §18, not one

Most guides describe the Katalogberufe and stop, which is why so many people conclude they do not qualify when they do. §18 Abs. 1 Nr. 1 Satz 2 actually opens with five activity types: scientific, artistic, literary, teaching and educational work. These need no listed job title and no formal qualification. Only then does the statute list the 23 Katalogberufe by name, from Ärzte and Rechtsanwälte through Ingenieure and Architekten to Journalisten, Dolmetscher and Übersetzer. It closes with "und ähnlicher Berufe", the open clause that admits any profession comparable in both activity and training to a named one. Separately, §18 Abs. 1 Nr. 3 covers sonstige selbständige Arbeit, naming executors of wills, asset managers and supervisory board members. Income under that head is free of Gewerbesteuer too.

Qualification matters, but only for some routes

For the engineering-adjacent and health professions, your training is usually the deciding factor. This is what makes software development the most contested classification in Germany: since the BFH stopped distinguishing system from application software in 2004, the question is no longer what you build but whether your education is comparable to a graduate engineer's or computer scientist's. Self-taught developers can qualify, but must evidence equivalent knowledge across all core areas of the field, if necessary through a Wissensprüfung. For artistic, literary and teaching work the qualification question does not arise at all, which is why an unqualified artist is freiberuflich and a well-qualified shopkeeper is not.

Hiring people is allowed. Stepping back from the work is not

§18 Abs. 1 Nr. 1 Satz 3 expressly permits the Mithilfe fachlich vorgebildeter Arbeitskräfte, on the condition that you remain leitend und eigenverantwortlich on the strength of your own expertise. Employing qualified staff therefore costs you nothing. Losing personal charge of the professional work does. This is the most common way established freelancers lose §18 status, and because it happens gradually, most never notice the line being crossed.

Mixed income: sole traders split, partnerships can be tainted

If you have both professional and commercial income, what happens next depends entirely on your legal form, and this is where the English-language guides most often go wrong. A sole trader simply keeps the two apart (Trennungsgebot): the commercial strand gets a Gewerbeanmeldung and pays Gewerbesteuer, the professional strand stays under §18. Nothing is contaminated. A Personengesellschaft, a GbR or Partnerschaftsgesellschaft, faces Abfärbung under §15 Abs. 3 Nr. 1 EStG, where one commercial strand can reclassify the partnership's entire income as gewerblich. Settled BFH case law allows a Bagatellgrenze: no Abfärbung while commercial net turnover stays at or below both 3% of total net turnover and €24,500 a year.

What Gewerbe status actually costs, and why the usual figure is wrong

You will read almost everywhere that trade tax adds 14 to 17% to your tax bill. For a sole trader that is simply not true, and it is the single most persistent myth on this topic.

Gewerbesteuer is charged on profit above a Freibetrag of €24,500 at a Messzahl of 3.5% (§11 GewStG), multiplied by your municipality's Hebesatz. But §35 Abs. 1 EStG then credits four times the Steuermessbetrag back against your income tax, capped at the trade tax you actually paid. Since the tax is Hebesatz times the Messbetrag and the credit is four times the Messbetrag, they cancel exactly at a Hebesatz of 400%.

At or below 400%, a sole trader pays no net Gewerbesteuer. Above it, only the excess is real. On €60,000 profit in Berlin at 410%, the trade tax is €5,094.25, the credit is €4,970, and the year costs you €124.25. Even in München at 490%, the same profit costs about €1,118. Real, but nothing like the figure the myth implies. The calculator above works this out for your own numbers.

The differences that do persist are administrative, and they are the honest reason to prefer §18 status where it is available: the Gewerbeamt registration, automatic IHK membership with its annual contribution, and the bookkeeping obligation. That last one is the most durable advantage. Under §141 AO a Gewerbetreibender must switch to double-entry bookkeeping and a Bilanz above €800,000 turnover or €80,000 profit. A Freiberufler may use the simple Einnahmenüberschussrechnung however much they earn, because §141 does not reach them at all.

If you are not sure

Write your activity description carefully, since that is what you are classified on. Where the case is genuinely borderline you can apply to your Finanzamt for a verbindliche Auskunft, a binding ruling on your own facts. It carries a fee, and it is far cheaper than a reclassification with back-dated tax and interest several years later.