Why we builtCasatax.
12 November 2026 · 2 minute read
In short
A holiday home is a small business with income, costs, guests and a tax return. Most owners run it from a spreadsheet, a folder of receipts and three different logins. Casatax puts it in one place.
What is the problem?
The numbers for one holiday home live in many places. Bookings sit in Airbnb and Booking.com. Money sits in the bank. Receipts sit in email, in a drawer, or with the other owner. Once a year a tax return needs all of it at once.
Why is tax the hard part?
For a home in Spain, every non-resident owner files Modelo 210, whether or not the home was let. The return needs the rent, the costs, the days let and the days empty, for each owner separately. Rebuilding that a year later from scattered records is slow, and mistakes are easy to make.
What does Casatax do?
- Bookkeeping, all year. Income, costs and bookings per home, with the profit per home and per year. Free to start, for a home in any country.
- Tax preparation, at the end. For Spain, Casatax prepares Modelo 210 from your own books, with a checklist and an export for your gestor.
What does Casatax not do?
Casatax does not file your return. Your gestor does, as a separate service. We think that split is the right one: the software keeps the numbers straight, and a professional signs off.
Who is it for?
Private owners with one to a few holiday homes, alone or with co-owners, who want to know what their home earns and be ready when the return is due.
Your holiday home,finally in order.
Casatax keeps your income, costs and bookings in one place, and prepares your Spanish return. Your gestor files it.
Join waiting listThis is general information, not tax advice. Rules and dates change, so check your own situation with your gestor.