Registered office vs. tax domicile: differences and examples in 2026

Below, we will tell you the characteristics of each of them and their main differences, with some useful examples to clear up any doubts.

"What is a registered office?

What is the registered office? As established in Article 9 of the Companies Law, the registered office of a company (also called mercantile domicile), is the location where a mercantile company or enterprise has its principal place of business or center of administration. In other words, it is the nerve center where the business is managed within the Spanish territory. It should be noted that it only applies to companies, and therefore excludes self-employed or professionals.

This address will have to appear in the deed of incorporation before a notary and, subsequently, it will be registered in the Commercial Registry, where it will be visible to anyone searching for the company on the Internet.

The address of the registered office shall determine:

• The Mercantile Registry where the company is registered
• Tax delegation
• The competent courts for legal matters
• State, local or regional regulations applicable in each case.

It is important to be very sure where the registered office will be established for legal entities of a commercial nature. The reason is that the process of changing said address is very tedious and complicated. It can only be modified by agreement of the Meeting of Partners, through a public deed and with the corresponding signature of the notary, to proceed later to the change in the Mercantile Registry. All this, with the consequent payment of the registry fees and the economic expenses that correspond to all the notarial processes. For that reason, it is convenient that the location that you choose lasts in the time.

As additional information, for many years now, the Constitutional Court has determined the inviolability of the domicile of both individuals and legal entities. In the case of the latter, the issue is more complex because it includes the registered office of the company and, in addition, the places where the company's documents and files are kept. This means that, if the tax inspection would like to access the place, it would need a judicial authorization or the consent of the interested party. Such consent must be given by the owner of the company or by an employee with administrative or management functions.

"Tax domicile

And what is the tax domicile? According to Article 48 of the General Tax Law, the tax domicile is the place that legally functions as the main address for all tax obligations with the Tax Authorities. In other words, the individual or legal entity is legally located at this address and will receive all notifications and correspondence from the Tax Agency and other Public Administrations.

Therefore, the fiscal headquarters is for:

• Individuals who are not self-employed: in this case, it would be the habitual residence.
• Self-employed: this would also be the habitual residence or an address where they manage the business activities and their relationship with the tax authorities.
• Companies: this is the address where the economic activity is managed, which may (or may not) coincide with the registered office.

In addition, the tax domicile will be the one that appears on all invoices issued and received as a business.

In the event that you wish to change your tax domicile, the process is much simpler and faster than changing your corporate domicile. You can simply change it by filing form 036 or 037 with the Tax Agency.

It is important to emphasize that having the wrong tax address will cause you problems, since important notices will not reach you. Therefore, it is very important that you always notify the Tax Agency of any change of address. Otherwise, in the case that you do not attend to an important notification, the responsibility would be yours.

"Tax domicile when you do not reside in Spain

And what happens with the tax domicile when you do not reside in Spain? In the event that you are a legal entity that does not reside in Spain, you will still have to maintain the tax domicile in the country, in order to comply with all tax obligations, in the corresponding places:

• If you operate in Spanish territory: the tax domicile will be the permanent establishment where the administrative management is carried out.
• In cases where income derived from real estate is obtained: at the tax address of the representative or, failing that, the location where the real estate is located.
• In all other cases: at the address of the representative of the business or of the person jointly and severally liable.

"Difference between registered vs. tax domicile

In short, what are the differences between registered office and tax domicile? The first thing to point out is that the differences would only affect companies and firms, since self-employed or self-employed persons do not have a registered office. These are the main ones:

• The address of the registered office is public and appears in the Commercial Register. However, the tax domicile may remain in the private sphere of the entrepreneur. In general, both addresses usually coincide, but it all depends on the circumstances and interests of each company.
• The corporate domicile is regulated in the Companies Law, unlike the tax domicile, which appears in the General Tax Law.
• The registered office is the center of operation and administration of a company, and the tax domicile is the one where the businessman has his obligatory relations with the tax authorities, although nowadays most of the notifications are received through the electronic office.
• The registered office is mandatory for all companies, while the tax domicile is mandatory for individuals and legal entities.
• The tax domicile does not appear in the public deed and the modification process is simpler than that of the change of the corporate domicile.

"Examples of registered vs. tax domicile

Let's take the case of a company dedicated to the production and sale of eyeglasses, which has a separate premises from the manufacturing center, from where all the business activity and management of the business is managed. In addition, it has several stores open to the public where it sells its product.

The registered office can be the same office or premises from which the activity is managed and it is not necessary for it to coincide with the tax domicile, although this is often the case.

In the case of the tax domicile, this could be: the office or premises where the company is managed and administered; the same home where the person in charge of the administration of the business resides or a business center or coworking center that offers domiciliation services.

In conclusion, you may have noticed that both domiciliations can be very similar and easy to confuse. Therefore, it is important that you know the small differences and have them clear when setting up your business. Whether you are self-employed or have a company, you will have to select well which addresses you will need and the importance of each one of them.

In any case, any change of registered office or tax domicile must be reported to the Tax Agency in order to obtain the Tax Identification Code (CIF) or Tax Identification Number (NIF) and when hiring workers.

AUTHOR: MÓNICA COCA

Freelance writer and screenwriter looking for good stories to tell. She can be found in all formats: articles, podcasts, novels and whatever comes up.