← Guides / Germany

Germany Tax Filing Guide (Steuererklärung & ELSTER)

A guide to filing your German tax return (Steuererklärung) online via ELSTER (www.elster.de). The mandatory filing deadline for the 2025 tax year is 31 July 2026 (extended to 28 February 2027 if you use a Steuerberater). Key attachments include Anlage N (employees), Anlage S (self-employed), Anlage KAP (capital income), Anlage V (rental income), Anlage FW (foreign income), and Anlage Kind (children). Voluntary filers in tax classes I, II, or IV commonly receive refunds. The Finanzamt has 4 years to issue an assessment.

Filing a German tax return is mandatory for certain groups (e.g., self-employed, single parents, married couples with class III/V, those with additional income >€410/year) and voluntary for most employees. The process is fully digitalised through ELSTER, the government's free online tax portal. For related reading, see our Personal Income Tax Guide → and Tax Audit Guide →.

Filing Deadlines and Requirements

  • Standard deadline: 31 July — The deadline for filing the return for the previous year is 31 July (e.g., Steuererklärung 2025 must be filed by 31 July 2026). If you file late and are required to file, the Finanzamt may impose a Verspätungszuschlag (late filing penalty).
  • Extended deadline with Steuerberater: 28/29 February — If you use a tax advisor (Steuerberater), the deadline is automatically extended to 28 February of the second following year (e.g., 2025 return → 28 February 2027). This extension is automatic — no application needed.
  • Voluntary filing (Antragsveranlagung): Employees in tax class I, II, or IV are not required to file but can do so voluntarily. Most voluntary filers receive a refund because the Lohnsteuer withheld monthly is almost always slightly higher than the actual tax liability, especially if they claim Werbungskosten above the €1,230 flat rate, Sonderausgaben, or haushaltsnahe Dienstleistungen.
  • Mandatory filing (Pflichtveranlagung): You must file if you: received unemployment benefits (ALG I/II) for >410 days, had additional income >€410/year (over the Sparer-Pauschbetrag), are self-employed (gewerblich or freiberuflich), are married in class III/V, or received Lohnsteuer-Erstattung (wage tax refund) in the prior year and the Finanzamt requests a return.

Key Forms (Anlagen) and How to File via ELSTER

  • ELSTER (www.elster.de): The free online portal for filing your tax return. You register with your Steuer-ID and receive a Zertifikat (digital certificate) for electronic signatures. ELSTER guides you through the forms with pre-filled data from employers (elektronische Lohnsteuerbescheinigung), health insurers, and banks. Returns are submitted electronically and processed by the Finanzamt.
  • Anlage N (employees): For reporting employment income, Werbungskosten (work-related expenses), commuting allowance, home office costs, and business travel expenses. Most of this form is pre-filled if your employer submitted an electronic Lohnsteuerbescheinigung. You add deductible expenses on top of the pre-filled data.
  • Anlage S (self-employed) & Anlage EÜR: Required for freelancers (Freiberufler) and tradespeople (Gewerbetreibende). Income and expenses are reported via Einnahmen-Überschuss-Rechnung (EÜR) for small businesses. Businesses with turnover >€600K or profit >€60K must use double-entry accounting (Bilanzierung).
  • Other key Anlagen: Anlage KAP (capital income — dividends, interest, capital gains over the €1,000 Sparer-Pauschbetrag), Anlage V (rental income from German property), Anlage FW (foreign income and foreign assets), Anlage Kind (children — for Kinderfreibetrag and Kindergeld), Anlage AV (retirement income — for Besteuerungsanteil calculation), and Anlage Unterhalt (alimony payments).

Related Guides

Comoros Property Tax Guide: Transfer Tax ~5%, Minimal Annual Tax 2026Comoros property tax — transfer tax approximately 5%, annual property tax minimal (~0.2% of rental value), registration fees, and rates for 2026.Malawi Capital Gains Tax Guide 2026 — CGT on Property, Included in Ordinary IncomeMalawian capital gains tax. Capital gains are included in ordinary income and taxed at progressive PAYE rates for individuals or CIT rates for companies. CGT on property disposals. Principal residenceNigeria Corporate Tax Guide 2026 — 30% Large, 20% SMEcorporate income tax in Nigeria. 30% for large companies, 20% for SMEs (turnover < NGN 100M), minimum tax, capital allowances, withholding tax, and CGT for 2026.Mozambique Corporate Tax Guide 2026 — IRPC 32%, New Companies 10%, Agriculture 0%Mozambican corporate income tax (IRPC). Standard CIT 32%, reduced 10% for new companies (first 5 years), 0% for agriculture, 35% for oil & gas. Capital allowances and compliance for 2026.Netherlands Oil and Gas Extraction Tax Guide (Gaswinning, Mijnbouwwet, Groningen, EBN, Staatsdeelneming, Gasbaten)Dutch oil and gas extraction taxation — the Mijnbouwwet (Mining Act) tax regime, the gasbaten (gas revenues) taxation including Vpb at 25.8% and the state participation share (the EBN — Energie BeheerDonation Tax Credit Guide — Charitable Donations Rebate in NZthe donation tax credit in New Zealand — the 33.33% rebate on the charitable donations claimed through the annual tax return.
Browse all guides →