NIT and RUT to buy in Serena del Mar: tax identification for a Mexican buyer

The deed identifies the buyer by a number, and a foreign passport is not always the number the paperwork expects. A Mexican buyer who reaches the signing without having sorted out their Colombian tax identification finds the date slipping, and not over price.

Two things get conflated here. The RUT is the tax registry held by the DIAN, and the NIT is the number that registry assigns to someone without a Colombian cédula; together they are the identity under which you exist for tax purposes and under which the property's tax and any future sale are settled. The cédula de extranjería (foreigner ID card) and a visa are a different matter and a different authority. What decides money is the sequence: whoever appears on the escritura, whoever sends the funds and whoever holds the tax identification have to be the same party, and fixing a mismatch after recording is a separate procedure. The DIAN states which documents from each country it accepts and in what form, the Cancillería explains apostille and legalisation of those documents, and the notaría states which identification it will draw the deed with.

Two currencies are called pesos in this transaction, so always say which one you mean: the contract is signed in Colombian pesos while the money leaves in Mexican pesos. The transfer is converted, enters through the regulated exchange market with its declaración de cambio and is registered as foreign investment with the Banco de la República, which is who to ask about how and in whose name. The poder for signing from abroad is granted before a Colombian consul in the city where you live or before a notario público and then apostilled, and which of the two the Cartagena notaría wants is confirmed with that notaría and with the Cancillería before you fly anywhere to sign. Visa rules and the cédula de extranjería are not the same for every nationality and belong to Migración Colombia: entering without a visa to visit the city and settling in it are two different situations. The tax question to settle with an accountant in each country is whether a treaty exists between Colombia and your country and what it says about rental income and about ganancia ocasional.

Serena del Mar runs on rules of its own. The land is developed under a plan parcial, a master plan adopted by District decree, and that decree, not a general reading of the POT, the city land-use plan, is what sets uses, land transfers to the city and development obligations for a given lot. So the document to request here is the adopting decree with its drawings; the land-use certificate that serves in a settled neighborhood is not enough. The second difference is a layer of private government that exists nowhere else: the ciudadela, the master community, has its own statutes, an architectural committee and design rules governing façades, fences and renovations, and those rules follow the property on resale, binding a buyer who never negotiated them. The third is the counterparty: you usually deal with the developer or with a fiduciaria, a trust company, administering the stages, and the unit's registry record descends from a very large parent parcel subdivided in phases, so title is verified upward, to the matriz, the parent record, and to the deeds transferring land to the District. Infrastructure was built by the developer: what matters is whether it has been handed over to the utility or is still privately held.

What is specific to Serena del Mar

What to verify, step by step

1. Ask the DIAN which tax identification applies in your case in order to appear as the buyer, which documents from your country are required, in what form, and whether an attorney-in-fact may file. That answer comes from the DIAN, not from the broker.
2. What a Mexican buyer has to settle before opening the procedure: that every figure in the contract says which peso it is in, and that the transfer is registered as foreign investment with the Banco de la República; whether they want a power of attorney before a Colombian consul or an apostilled notarial one, asked of the notaría and the Cancillería and whether a treaty exists between Colombia and your country, and what it says about rental income and about ganancia ocasional, with an accountant in each country.
3. Check with the Cancillería which of your country's documents need an apostille or consular legalisation, and what official translation is required, since a document without that seal is sent back.
4. Ask the notaría in Serena del Mar which identification it will draw the deed with, and confirm that name and number match exactly those on the certificado de tradición y libertad and those on the transfer.
5. If you will not be present, grant the poder before a Colombian consul or with an apostille, and ask the notaría and the Cancillería which of the two they accept before paying for the translation.
6. Once the deed is recorded, check with the Superintendencia de Notariado y Registro that the buyer was entered under the same identification used to sign.

Mistakes that cost money

• Leaving the tax identification until last, once there is a signing date. It is the single formality that most often pushes the signing back for buyers abroad.
• Transferring from an account whose holder is not the buyer who will appear on the deed. Those two names have to match, and explaining it afterwards costs more than planning for it.
• Assuming the tax identification has anything to do with a visa or with residency. Different authorities, different procedures, and neither stands in for the other.

Frequently asked questions

Can a Mexican buyer complete this without travelling?

That is the question to put to the DIAN for your specific case, along with whether an attorney-in-fact may file and which documents must be apostilled. We do not pre-empt the answer, because the requirements change.

Do I need the foreigner ID card for this?

That is a question for Migración Colombia, and it is separate from the tax one. The identification the deed is drawn with is confirmed by the notaría.

Can I buy through a company from my own country?

It can be put on the table, and it changes which identification and which documents are required. Settle it with the DIAN and with an accountant before signing the promesa, because afterwards the titleholder does not change without another deed.

Where to check it

• DIAN — the tax ID, withholding on sale and the capital gains tax
• Cancillería de Colombia — current visa requirements and the apostille of foreign documents
• Superintendencia de Notariado y Registro — the certificate of title and encumbrances, which is the property's full history
• Cartagena de Indias — the rules of the municipality Serena del Mar belongs to

Official bodies. Specific figures are requested there, not copied from a listing.

Updated 2026-11-06