Self-Employed and Employed in Germany 2026: Taxes for Side Hustlers

You mastered taxes for your day job — then started a side business and suddenly you're juggling two worlds at once: payroll tax from your employment and income tax from your self-employment. What most people underestimate: the tax office merges both incomes at the end of the year — and that's where the biggest surprise bills come from. Here's what you need to know in 2026 to keep your second income from becoming a tax trap.

Two income types — how the tax office combines them

Your gross salary goes on Anlage N. Your self-employment profit lands on Anlage S (Freiberufler) or Anlage G (Gewerbetreibender). The tax office calculates your personal tax rate on the sum of both incomes — and with a full-time salary in the background, that rate is often 30–42 %, much higher than if your €5,000 freelance profit were taxed alone. That's why "just doing a small EÜR" isn't enough.

The €410 threshold and Härteausgleich

Section 46(3) of the Einkommensteuergesetz defines two thresholds: secondary income up to €410 per year is tax-free. Between €410 and €820, the Härteausgleich (hardship adjustment) kicks in — you only tax the difference (a €600 profit means €380 taxed, €220 tax-free). Above €820 profit, the side business is fully taxable. Note: the thresholds apply to profit (revenue minus expenses), not gross turnover.

Anlage S, Anlage G and the EÜR — what you actually file

Once taxable, you submit an annual income tax return with the relevant appendices — even though your day job is already settled via payroll. That return usually includes an Einnahmenüberschussrechnung (EÜR) as a separate form. Freelancers add Anlage S, trade businesses Anlage G. Your employment income stays on Anlage N — both forms coexist in the same return. How to declare a part-time self-employment to your health insurer and employer is a separate topic in itself.

VAT — Kleinunternehmer or standard?

Regardless of your job, your self-employment has its own VAT profile. If your revenue is under €25,000 in the prior year and €100,000 in the current year (thresholds updated in 2025), you can choose the Kleinunternehmerregelung — no VAT on invoices, no VAT preliminary returns. Once you exceed those limits, you're subject to standard VAT: charge it on invoices and file quarterly (sometimes monthly) returns.

Prepayments — the trap after your first tax bill

Classic stumbling block: in your first year of side-business activity, you pay no income tax prepayments because the tax office hasn't acted on your tax registration questionnaire yet. Your first tax assessment hits with the back-pay — and at the same time, the tax office retroactively sets prepayments for the current and next year. Worst case, you owe four quarters on the same day. From euro one of profit, set aside 30–40 % as a tax reserve.

Health insurance and pension — what changes

If you're publicly insured through your day job, you generally stay covered — the side business is considered "secondary." The key test: your hours and income from the side must stay below your main job. Earn more or work more on the side, and the self-employment becomes your primary occupation — meaning you pay the full health and pension contributions yourself, easily €300–400/month more. For pension insurance, some professions (artists, caregivers, teachers) face mandatory contributions even part-time.

Hourly rate and expense rules — separate both worlds cleanly

For the side business to actually pay off, your hourly rate has to cover taxes, social charges, and reserves — or you'll net less than your day-job hour. Also important: Werbungskosten (employee expenses) and Betriebsausgaben (business expenses) go on different forms. A laptop you use both for your job and your business has to be allocated pro rata — cleanest to claim it 100 % as a business expense and tax the private use.

Bookkeeping on top of your day job — the easy fix

Nobody wants to fight Excel after a full day at work. Norman handles it automatically: photograph receipts, AI categorizes them under SKR03/04, EÜR and Anlage S/G generate at the touch of a button, tax workflows for the self-employed run straight to ELSTER. That saves two to three hours per month — and is worthwhile even below €17,500 in revenue, because you stop accumulating receipts in a drawer.

Conclusion

Running a side business while employed in Germany is tax-feasible — but only if you cleanly separate both incomes and know the rules: Härteausgleich up to €820, Kleinunternehmer threshold of €25,000, a tax reserve of 30–40 %, and a health-insurance reality check when you scale. Get that on autopilot from the start and the first tax assessment in April won't be a moment of dread.