Description
Looking after rented homes means juggling leases, rent payments and yearly cost breakdowns. WISO Vermieter 365 pulls these together for private landlords, and in Ireland you can order the twelve-month, single-user licence online through TresBizz.
Please note that the software is in German and tailored to Germany. It is aimed at people who rent out property there, so check that it fits your circumstances before you order.
The idea is simple: spend less time on admin and more on running your lets. Instead of spreadsheets and paper folders, you keep the essentials in one tool.
What you get
- Tenants and properties: a tidy record for every let
- Rent overview: see what has come in and what is late
- Running-cost statements: prepare the annual breakdown your tenants expect
- Templates: reuse prepared documents for letters and notices
- Licence scope: one user for a full year
Landlords with a small number of lets get the most out of it. What you enter once is there when you need it, so the annual statement no longer starts with a search through old receipts.
Day to day it works like this: set up the property, add the tenant, check the rent as it arrives, then draw up the yearly statement.
Your licence
We list one clearly defined version:
- Number of users: 1
- Duration: 12 months
- Intended for: private landlords in Germany
- Language of the software: German
It is licensed for one person. Need it for more people? Add extra licences to the same order.
Ordering from TresBizz
TresBizz is based in Brussels, Belgium, and delivers software digitally across Europe. Irish customers pay in euro by card, Apple Pay, Google Pay or PayPal. An official VAT invoice is issued with each order, and EU business customers can add their VAT number at checkout. The licences we sell are genuine.
You will get the key and the download link by email, typically within a few minutes and no later than 24 hours after payment. Support runs by email. A key that fails to work is swapped for a new one or refunded. The licence is meant to be activated within the European Union.
What you need
According to the product details, the requirements are short:
- Windows 10 or Windows 11
- An internet connection to activate the licence
No further hardware details are given, so a current Windows PC with internet access is what to have ready.
After you order
When your payment is confirmed, an email lands in your inbox with the key and the download link. Download, install on your Windows PC and unlock the programme with the key.
As the product is designed around German conditions, it is sensible to confirm it suits your lets first. Questions are welcome by email.
It helps you organise and prepare statements, but it is not personal advice, and you stay responsible for what your documents say.
Quick answers
How long does the licence last?
Twelve months, for a single user.
Does it have an English interface?
No, the software is entirely in German.
Is it right for Irish rentals?
It is built for the German tax and banking system and for landlords in Germany.
How soon is the key sent?
Usually in minutes by email, and at the latest within 24 hours.
What if the key will not activate?
Drop us an email and we will replace it or refund your purchase.
















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