690,000 people started a business in Germany in 2025, and 483,000 of them did it alongside a job. Only about 8% of those side businesses ever move to full-time self-employment, even though 23% planned to, so for most people the side hustle is the destination, not a run-up. Treat it like one from day one: the tax office counts from the first euro, so set up separate business and tax-reserve accounts, check the €25,000/€100,000 small-business VAT thresholds properly, and watch out for depending on a single client, the single biggest trigger for a false self-employment audit.
690,000 people started a business in Germany in 2025, up from 585,000 the year before. 483,000 of them did it next to a job. And here is the number that almost disappears inside the KfW-Gründungsmonitor 2026: over the long run, only around 8% of those side businesses move into full-time self-employment a year later. 23% planned to.
So the side hustle is not a run-up. For most people it is the destination. That is not bad news, but it changes what you should be building in your first two years.
What actually happened in 2025
Founding activity rose 18%, and effectively all of the growth came from the side: 483,000 part-time against 206,000 full-time, a figure now stagnant for the third year running. Seven in ten new businesses in Germany are started alongside something else, the highest share on record.
The rest of the profile fits. 86% are solo, and team foundings dropped to 14%, the lowest in twenty years. 44% sell something digital. 70% of founders were in employment before, and six in ten side-business founders stay hybrid, meaning the contract of employment keeps running. On average they put 16 hours a week into their own thing.
The motive has shifted in a way worth taking seriously. Generating "a higher or additional income" is now named by 40% of side-business founders, up from 32%. Independence and self-realisation are named less often. This is about money, and the obvious reason is that one salary no longer covers enough.
The break shows up most clearly with women. They account for 35% of all founders, but only 27% of full-time founders, down from 33% the year before. The route alongside a job stays open. The jump gets narrower.
One piece of context rarely placed next to those numbers: the Federal Statistical Office counts just 3.5% of all employed people aged 15 to 64 as solo self-employed in 2025, on a long-term downward trend. Record numbers of people are founding, and the group that lives off it keeps shrinking. The side business sits exactly in that gap.
The bridge almost nobody crosses
23% plan the move to full-time, 8% make it. Add the second uncomfortable figure: a good four in ten people who are actively planning a business abandon the plan.
Hannah Trute, a lawyer and co-founder of Gründer Studios, spent her Freelance Unlocked 2026 session asking the room rather than telling it. Worst-case scenarios, live from the audience: becoming homeless, not making rent, moving back in with your parents, burnout, completely broke. Symptoms in stressed phases: sleep problems, losing concentration, panic attacks, hair loss.
Her point is practical rather than therapeutic. The brain prefers situations it can predict and treats anything new as a risk first. In self-employment almost everything is new. That is why her founder academy hears sentences like "can I go to prison for this?" and insolvency worries on day one, before anything has been founded at all.
A founder in the audience described where that leads:
"For the longest time I was so afraid of that final step that in the end it dragged on for four years. And those four years were so full of great ideas I could have built long ago, if I had just dared to take the step a bit earlier." (founder from the audience in Hannah Trute's session, translated from German)
Four years of waiting for a moment that never arrived. That is the 40% figure in one sentence.
Judith Böhlert, a freelance software engineer, described the same mechanism from the other end. She had been putting off her talk on impostor syndrome and procrastination for months, and then worked out what she was actually waiting for:
"I realized that I had been waiting for the perfect moment to start, an uninterrupted block of at least 6 hours on a day where I felt energetic and well-rested. But honestly, that day would just never come." (Judith Böhlert)
If you have 16 hours a week, you never get that block. Which is why the only thing that works in a side business is the smallest possible next step, not the big run-up on Sunday. Judith names a second trap that costs more part-time than full-time: it is easy to look busy all day without being productive. Working efficiently on tasks that move nothing is a much bigger share of your week at 16 hours than at 50.
Part-time is not a hobby, at least not to the tax office
The most expensive misunderstanding in a side business is treating small revenue as a hobby with invoices attached. The Finanzamt starts counting at the first euro.
Bureaucracy is the most-named obstacle in the KfW report: 64% cite it, and compliance eats 5.1 hours a week on average. Against 16 hours of side-business time, that is close to a third of everything you have. Which is the argument for dealing with the unpleasant part early. Trute put it this way on stage:
"With taxes and everything that counts as a bureaucratic process, it really pays to bite the bullet right at the beginning." (Hannah Trute, translated from German)
Her reasoning: taxes behave like anything heavily regulated. Once you have understood them, not much can happen any more, they become easier to predict, and a chunk of the uncertainty disappears with them.
Four things that go wrong on repeat:
Treating the small-business VAT rule as a tax saving. It is not one. § 19 UStG sets two limits: no more than €25,000 in total turnover in the previous calendar year, and no more than €100,000 in the current one. Cross the €100,000 mid-year and the exemption goes from that moment, in the middle of the year. The price of the convenience is input VAT: buy a €2,500 device plus 19% as a small business and the €475 is gone for good. Lars Siegert, founder of German Business Buddy, adds the side effect nobody plans for. The mandatory note on your invoice tells every client you are small.
Running everything through one account. Siegert's formula is one plus two: a personal account, a business account for daily operations, and a second business account as a tax reserve. The VAT you collect goes there the day it lands, plus a share for income tax. Founding on the side means the salary keeps running, which is the good part. The catch: the profit from the business lands on top of that salary and is taxed at your personal rate. The bill arrives later and larger than most people estimate.
Collecting receipts without matching them. Siegert's rule is short:
"There's a golden rule of accounting: no booking without records." (Lars Siegert)
One inbox folder, one naming convention with date and counterparty, one fixed date a month where the bank statement gets matched against documents. Ten years of retention duty is not an argument for a shoebox.
Fear of the first mistake. This is where Siegert hangs his whole session: mistakes are fixable. The worst thing that happened in his own story was a late-payment fee and one year where the VAT timing was wrong. As long as you file and communicate, German tax offices are surprisingly workable with solo businesses.
If you want the whole system explained once from the start, our guide to taxes and bookkeeping for freelancers in Germany builds exactly those blocks.
The risk only hybrid founders carry
Now the part most start-up advice skips, because it is awkward.
The typical German side business of 2025 looks like this: one person, no team, a digital service, 16 hours a week, an employment contract still running. And in a lot of cases exactly one client, because more does not fit next to a job. Often that client is the current employer, a former employer, or a company from the same network.
That profile is the one that stands out in an audit. What decides the case legally is whether you work under instructions and whether you are integrated into someone else's work organisation. In audit practice a third signal comes on top, not a criterion of its own but the thing that opens the file: depending on exactly one client. A side business with a single client brings that signal along by default. If the client also supplies the logins, the tools and the working hours, all three are on the table.
The good news is that you can have it checked before somebody else does. The Clearingstelle at Deutsche Rentenversicherung Bund runs the status determination, it is free, and it works on paper. The timing matters: if the procedure starts within one month of taking up the activity, then even if the decision says employment, insurance liability begins only when that decision is announced rather than retroactively.
For a quick self-assessment first, 9am's free false self-employment self-check asks the same questions an auditor asks and takes a few minutes. If you are building on the side and want to keep the self-employed status long term, run it once a year, and immediately once one client accounts for more than half of your side revenue. One sentence on pensions while we are here: the planned mandatory old-age provision would hit newly self-employed people, which suddenly makes your founding date relevant. What is being prepared is in our piece on the pension mandate for the self-employed.
Austria, because it confirms the thesis
Austria counts its one-person businesses more precisely than Germany does, and the numbers tell the same story. The WKO's EPU monitoring report counts 376,112 one-person enterprises, 62.1% of all active members, up 3.9% year on year. 26% run the business alongside something else. 19% are Silverpreneurs, self-employed alongside or after retirement, against 6% in 2016.
And the line that finally kills the "part-time means small" assumption: a quarter of those one-person businesses turn over more than €100,000 a year.
What to do on Monday
- Decide on purpose whether you are in the 8% or the 92%. Both are valid answers. But a side business meant to stay a side business needs different prices, different clients and different working hours than a ramp into full-time.
- Set up the one-plus-two account model. One business account, one reserve account, and the VAT moves across the day the payment lands. That is an hour of work and it prevents the most common cash crisis of year two.
- Calculate the small-business VAT rule instead of assuming it. €25,000 last year, €100,000 this year, planned purchases, B2B or B2C. With business clients the standard scheme usually wins.
- Count your clients. One is a risk, two is insurance. If you are on one, the second is the most important project of your next three months, ahead of any website rebuild.
- Give the status check 20 minutes. The false self-employment self-check shows which parts of your setup would draw attention. Fix whatever comes back red in the next contract, not during the audit.
If that exercise tells you client number two is missing, you are in the majority: 57% of founders name winning clients as their main difficulty. What a sales routine looks like when it has to fit around a job is in our piece on surviving your first year freelancing and in the research on hybrid freelancing.
And if you would rather not look for that second client inside your old work environment, which is the smarter option for status reasons anyway: create a free profile on 9am and let companies across DACH match against what you actually do. Part-time counts.
This article is general information and does not replace tax or legal advice.
Freelance Unlocked is co-organized by 9am together with Uplink and freelancermap. This article draws on the sessions of Hannah Trute and Judith Böhlert at Freelance Unlocked 2026. Watch the full talks above, and join us at the next edition: freelanceunlocked.com.
