Mietfux – Mietverwaltung für Vermieter

Mietfux (“Miet” = rent, “Fux” = fox) puts everything a private landlord in Germany needs for one or more flats into a single plugin. All data stays in your own WordPress database – no cloud service, no data transfer to third parties, no external scripts.

The user interface is available in German and English. The generated legal documents (tenancy agreement, house rules, information sheets) are in German because they implement German tenancy law (BGB, BetrKV, HeizkostenV, EStG).

Features

• Master data – properties, units (flat, garage, parking space), tenants with an optional spouse or partner as co-tenant, tenancies with additional units (flat + garage = one agreement, one total rent)
• Payments – due/paid per month, tick open items to book them, bank import (CSV / CAMT.053) with matching rules and duplicate detection
• Receipts – cost type, tax year, service period, file upload with camera support; spreading of maintenance costs over 2–5 years; labour share for tenants (§ 35a EStG)
• Service charge statement – per BetrKV with allocation by area, persons, units or consumption; heating per HeizkostenV; pro rata on tenant change; letter as PDF
• Tax reporting (Anlage V) – income, expenses by form line, depreciation, loan interest, prior-year comparison, CSV export
• Depreciation – statutory rate by year built, itemised acquisition costs, land share, purchase contract PDF parsed locally in the browser, 15 % guard
• Loans – repayment schedule, instalments to tick off, extra repayments, bank interest certificates
• Tenancy agreement – complete residential agreement with annexes: house rules, heating/ventilation leaflet, privacy notice, SEPA direct debit mandate, move-in/move-out handover protocol
• Deposit account (§ 551 BGB), dunning (three levels), rent increases (§ 558 / § 557b BGB)
• Tenant portal via shortcode [mietfux_portal] – rent account, statements, released documents, damage reports, meter readings
• Data protection – deletion concept with retention periods, anonymisation, Art. 15 GDPR access report
• Setup wizard, in-app help, focus mode, backup/restore as JSON, clean uninstall

The plugin does not replace legal or tax advice. Contract templates and calculations are based on German law as of 2026 and must be checked before use.

Deutsch

Mietverwaltung für private Vermieter: Stammdaten, Zahlungen, Belege, Betriebskostenabrechnung nach BetrKV, Steuer (Anlage V), AfA, Darlehen, Mietvertrag mit allen Anlagen, Kaution, Mahnwesen, Mieterhöhung, Mieterportal und Datenschutz-Löschkonzept in einem Plugin. Alle Daten bleiben in der eigenen WordPress-Datenbank. Einrichtungsassistent und Hilfe sind im Backend enthalten.