Our experts in tax law will provide you with advice and representation in taxation and fiscal matters.


At Duquesa Lawyers we offer advice on tax planning, filing tax returns, assistance in management, inspection, sanction and tax collection procedures, and economic-administrative claims.



Current and permanent training in accordance with legislative changes allows us to offer you assistance regarding deductible expenses and allowances that may be applicable to you, guaranteeing that you will only pay what really corresponds to you.

Our main focus areas are:

Tax advice for non-residents

We provide tax guidance and representation in administrative procedures related to the application of taxes. This includes the preparation and filing of tax returns.

Annual declarations (Income and Assets)

We take care of the preparation and presentation of your returns, carefully evaluating the deductible expenses and available bonuses to ensure that you only pay the corresponding taxes. We maintain constant monitoring of legislative changes.

Processing of the Foreigner Identification Number (NIE)

We assist you in applying for the NIE, a personal and unique number for foreigners that identifies you and must appear in your official documents. We also facilitate the process of paying related taxes.

Registration of the Tax Identification Code (CIF)

We satisfy the needs of international companies by streamlining the registration of their CIF with the Tax Agency. As an integral part of this service, we manage the obtaining of the NIE for the administrators of foreign entities.

Payment of taxes and municipal fees

We are in charge of the processing of various taxes such as the Real Estate Tax (IBI), the Value Added Tax (VAT), the Personal Income Tax (IRPF), the Corporate Tax (IS), among others.