Self-Employed

Side Hustle Tax in Germany and Austria: The Real Thresholds

Side hustle tax in Germany and Austria catches people off guard. Here are the real tax-free limits, when you must file, and how much to set aside.

Maxim, founder of DolFin

26 June 2026 · 11 min read

Side hustle tax in Germany and Austria is where a lot of side income quietly vanishes. You make a bit of money on the side, it feels like a win, and then a bill lands months later that you never planned for. This guide gives you the real tax-free limits, the moment you have to file, and how much to put aside so the side gig stays a win.

I moved to Vienna at 17 with 50 euros in my pocket. I knew the price of every type of pasta at my local shop, because I had to. I worked sales, tutoring, security, kids' animation, sometimes all at once. So I know the feeling of side money landing in your account. It feels like free money. It is not. A piece of it belongs to the tax office, and the sooner you know how big that piece is, the safer your side hustle is.

Let me walk you through the numbers, in plain English, for both countries.

How much side income is tax-free in Germany and Austria?

Less than most people think, and the limit is per year, not per month. In Germany, only 410 euros of side income per year is truly tax-free, under a rule called the Härteausgleich (Finanztip, 2026). In Austria, the line is 730 euros per year, called the Veranlagungsfreibetrag (Taxfix, 2026).

Germany: the 410 euro line

In Germany, you do not need to file a tax return if your extra income stays under 410 euros for the whole year (Finanztip, 2026). Notice the word year. That is not 410 a month. One busy weekend of freelance work can blow right past it.

Between 410 and 820 euros, there is a sliding relief, so only part gets taxed (Finanztip, 2026). Over 820 euros, the whole amount is fully taxed (Finanztip, 2026). So the "free" zone is small, and you can leave it behind fast.

Austria: the 730 euro line

In Austria, side income up to 730 euros a year does not need to be reported (Federal Ministry of Finance, 2026). But there is a second trigger. You must file a return if your side income is over 730 euros and your total income is over 14,517 euros (Federal Ministry of Finance, 2026). For most people with a normal job plus a side gig, both of those will be true fast.

Does the side income limit mean I earn that much tax-free?

No, and this is the most expensive myth in the whole topic. A lot of people think the limit means they can earn up to that number without paying any tax. That is not how it works. In Austria, the tax office is clear: for every cent you earn, tax is due once you pass the line (trend, 2026). The limit decides whether you must file, not whether the money is free.

Your side income stacks on top of your salary

Here is the part US finance content never tells you. Side income does not get its own gentle tax rate. It gets added on top of your main salary and taxed at your top rate (der Finanzcheck, 2026).

Say you earn 40,000 euros at your job and make 2,000 euros on the side. That 2,000 is not taxed from zero. It sits on top of your salary and is taxed at the rate you already reached. So a real chunk of it is gone. This is why people feel like their side gig paid less than the hours they put in. It did, once tax took its cut.

Why does the tax bill arrive so late?

Because nothing is taken out as you earn it, the bill lands much later, often a full year on. With a normal job, tax comes out of every payslip before you see the money. With side income, you get the full amount, spend it, and then the tax office asks for its share long after the cash is gone.

The first-year trap

In your first year of side work, it is easy to forget to set money aside, because no one takes it for you. Then the big back-payment shows up (Geldmarie, 2026). The income felt like a bonus all year. The bill feels like a punishment. Nothing went wrong. You just never saw the tax coming.

One writer put it well: side hustles feel profitable until the first Steuerbescheid arrives (Taxfix, 2026). A Steuerbescheid is the official tax assessment, the letter that tells you what you owe. The advice is the same one I follow: keep a tax buffer and expect a surprise bill.

The second-year double hit

Year two can be even harder. You pay the back tax for last year, and at the same time the tax office asks for advance payments on this year (Gulp, 2026). Two bills land in the same window. This has pushed many self-employed people into real cash-flow trouble (Gulp, 2026). It feels like double tax, but it is just timing catching up with you all at once.

How much should I set aside for side hustle tax?

A safe rule is to move money aside the day you get paid, not when the bill comes. In Germany, set aside 25 to 35 percent of your profit for tax (Accountable, 2026). In Austria, the rule of thumb is harsher: put aside about half of your profit, because that has to cover both income tax and social insurance (Taxbox, 2026).

The trick is to do it the moment the money lands. Open a second account. Every time a side payment comes in, move the tax share over before you can spend it. Then the bill is already covered, and there is no panic. This is the same idea as a money system that runs without you having to be disciplined every day. If you want to see how a simple system beats willpower, read why your budgeting app keeps failing you.

Do mini-jobs and second jobs trigger tax too?

Yes, and small second jobs trigger some of the nastiest surprise bills. People assume two tiny jobs are harmless. They are not always. In Austria, the Arbeiterkammer shows an example where two small jobs at 350 and 250 euros a month, 600 in total, triggered a social insurance back-payment of 1,222.08 euros for the year (Arbeiterkammer, 2026). Two jobs that each felt safe added up to a four-figure bill.

Germany: the second job tax class

In Germany, the catch is the tax class. A second job goes into Steuerklasse 6, which taxes the money from the very first euro, with no tax-free base (Steuerbot, 2026). In one example, 1,500 euros gross in this class left only about 625 euros net, against about 1,070 euros in the normal class (Steuerbot, 2026). Same gross. Almost 445 euros less in your hand. That is why so many people are shocked at how little their second job pays.

What if I register as a small business?

You still owe income tax, even as a small business. A lot of beginners think the Kleinunternehmer rule means no tax at all. It does not. The Kleinunternehmer rule only frees you from charging VAT. You still pay income tax on what you earn (Accountable, 2026).

The VAT money was never yours

If you do charge VAT, here is the mental trap. The VAT lands in your account and feels like income. It is not. You collect it from your customer on behalf of the tax office, then hand it over (Qonto, 2026). The standard rate is 19 percent, with a reduced rate of 7 percent (Qonto, 2026). It was in your account, but it was never your money.

One more number to know. From 2025, the German Kleinunternehmer limits rose to 25,000 euros for the prior year and 100,000 euros for the current year (Taxfix, 2026). If you cross the line mid-year, you flip into charging VAT, so it pays to watch where you stand.

Where DolFin fits in

Knowing the thresholds is half the job. The other half is seeing your real numbers, so you actually know what you made and what to set aside. Most people guess, and guessing is how the surprise bill wins.

That is why I built DolFin. You upload your bank statement as a PDF or CSV, with no bank login. DolFin reads it and shows you what came in and what went out, in one clear view. It does not file your taxes and it does not give tax advice. It gives you the picture, so you can see your side income next to your spending and set the tax share aside before you spend it.

If your side gig is turning into real freelance work, read the freelancer tax trap in Germany and Austria next, and learn how to keep more of your salary with brutto and netto moves.

The one thing to take away

Side money is not free money. A slice of it belongs to the tax office, and the bill always comes late, after the cash is gone. So treat the side hustle like a small business from day one. Know your country's limit. Set the tax share aside the day you get paid. See your real numbers instead of guessing. Do that, and the side gig stays a win instead of turning into a shock. Defence before offence, even on the money you make on the side.

Maxim

Moved to Vienna from Ukraine at 17 with €50. Figured out DACH money the hard way, then built DolFin so you do not have to.