We offer high-quality solutions to businesses and individuals in tax, accounting, legal, and administrative matters.

From our firm, we provide professional assistance to companies, entrepreneurs, and property owners in all procedures related to their tax and administrative obligations in Spain.

We advise both companies and individuals on matters related to property ownership, holiday rentals, non-resident tax obligations, and administrative procedures with various public administrations.

Many property owners, especially non-residents, face complex administrative procedures and specific tax obligations arising from property ownership in Spain. Our firm offers a personalized service that allows you to manage these aspects securely and efficiently.

Since 2004, the law firm of Swiss citizen Thomas Muhmenthaler has offered its services to foreign companies and individuals for all procedures with public administrations.
We offer high-quality solutions at fair prices, with the goal of achieving maximum client satisfaction in all the services we provide.

Business Consulting

Our business consulting services cover accounting, tax, labor, and legal matters related to civil, commercial, labor, and tax law.

Our specialized services include advising and assisting in the formation of a business project, whether it’s a new company or the establishment of a branch of a foreign company, as well as advising on commercial activities such as the import and export of goods.

We keep you constantly informed about legal developments that may affect your company, ensuring you are always up-to-date with your legal obligations.

Tax and Administrative Advice for Individuals

Tax and administrative advice for individuals is always personalized and tailored to each situation.

We assist residents and non-residents with tax and administrative matters, including income tax returns for residents and non-residents (IRPF/IRNR), as well as managing various procedures related to their tax and administrative obligations in Spain.

We would be pleased to assist you in organizing and completing your formal procedures and help you with any issues that may arise with public administrations.
We can assist you in Spanish, German, English, and French.