Bitcoin and Real Estate in Mexico: OTC Guide 2026

Summary: If you sold a property in Mexico and want to move part of the proceeds into bitcoin, Aureo can help today through an OTC transaction (over-the-counter, meaning a coordinated conversion outside an exchange's public order book). If you hold bitcoin and want to sell it to buy a property or fund a down payment, Aureo can help with that too. What Aureo does not do yet is sit inside the property deal itself: it does not take bitcoin from a buyer and settle pesos to the seller as the closing operator. In that case it can serve each party on their own side of the conversion, while the real estate transaction is structured with independent legal, tax and notarial advice. This guide covers the operational scope, the documents that may be requested, the minimums and published fees as of September 2026, and the questions to resolve before execution. It is educational and operational information, not legal, tax, notarial or real estate advice.

Why it matters

• A property sale concentrates a lot of money in one moment. A seller who receives several million pesos at closing has to decide within weeks where to put them, often with little time and a lot of pressure. For a foreign owner, that decision also involves whether to keep the money in pesos at all.
• The peso loses purchasing power at home even when it is stable against the dollar. Between August 2016 and August 2026 Mexico's consumer price index (INPC) rose about 62%, so a 2026 peso buys roughly 62% of what it bought ten years earlier (INEGI). Against the dollar the picture is different: Banxico's FIX rate ended September 2016 at 19.41 pesos per dollar and stood at 17.15 on 17 September 2026 (Banxico, via the DOF). Anyone seeking a hedge is protecting against local inflation and single-currency concentration, not against a recent peso slide.
• Selling a property triggers Mexican tax obligations that a later conversion does not erase. For individuals, the notary calculates, withholds and remits the provisional ISR (income tax) on the sale when the deed is signed (Article 126 of the Ley del ISR). Buying bitcoin afterwards does not change that, and selling the bitcoin later has its own treatment.
• A well-documented OTC transaction runs on predictable timelines. A poorly documented one can take weeks or fail. The difference is the quality of the file, not the goodwill of the parties.
• OTC conversion and the property transaction are two different things. Aureo operates the first. The second needs its own legal and notarial architecture.

Scope of this guide

This document describes Aureo's operational scope for peso-to-bitcoin and bitcoin-to-peso conversions connected to real estate in Mexico. If you are buying or selling property, the documentation and closing structure should be reviewed with your notary (notario público), a Mexican accountant (contador) and, where relevant, a lawyer. Tax references here apply to Mexico and are dated September 2026. If you are not a Mexican tax resident, the rules that apply to you may differ; confirm your situation with a Mexican tax adviser before structuring anything.

The two scenarios Aureo handles today

1. You sold a property and want to buy bitcoin

This is the most direct case. You closed the sale of a house, land, a commercial unit or other real estate, the funds are in your peso bank account and you want to convert part or all of them to bitcoin. From MX$200,000 upwards, the transaction runs through Aureo's OTC desk, the route offered under Patrimonio for larger tickets. If the property was held by a Mexican company, the route is a business account under Businesses, with KYC/KYB onboarding and reporting designed for your accountant.

2. You hold bitcoin and want to sell it to buy a property

If you accumulated bitcoin over the years and now want to sell a meaningful position to buy a property, pay a down payment or move temporarily into pesos, Aureo can structure that sale as an OTC transaction. The pesos are paid out by SPEI (Mexico's real-time interbank transfer system) to the Mexican bank account you designate, subject to the compliance rules in force.

Below MX$200,000, the standard buy or sell flow in the app (with a personal CLABE account number and SPEI) is usually the more efficient route. As of September 2026 the minimum purchase is MX$500 and the fee scales with ticket size, from 2.00% under MX$5,000 to 1.25% between MX$50,000 and MX$199,999. The full schedule is on the Pricing page.

Why some sellers move property proceeds into bitcoin

This is an observation about what we see, not a recommendation. Every financial situation is different and should be evaluated with professional advice.

When a client closes a property sale, they receive a large peso amount and three practical questions follow: where to put it, how to protect its purchasing power, and how to align the destination of the funds with medium- and long-term wealth goals. Keeping everything in Mexican bank accounts has an inflation cost: annual inflation was 3.26% in August 2026 (INEGI). Right now, conservative instruments do pay above that level: 28-day CETES (Mexican treasury bills) were placed at 6.25% gross annual in the 8 September 2026 auction (Banxico, via the financial press). In other words, the 2026 case for allocating to bitcoin is not that pesos "lose to inflation this year", because before tax they currently do not. The case made by those who do it is about horizon: not depending on a single currency, a single issuer and a single interest rate for ten years or more.

Some clients allocate a portion of the sale proceeds to bitcoin with that logic. That decision is not universally correct. Bitcoin is a highly volatile asset: after each cycle peak (2011, 2013, 2017 and 2021) it has fallen 75% or more from peak to trough (NYDIG Research, March 2024). For a client who understands that volatility, holds a horizon of five to ten years or more and sizes the position as a reasonable fraction of liquid net worth, converting after a property sale can make sense. For someone with a short horizon, an upcoming liquidity need or no tolerance for drawdowns of that size, keeping pesos in conservative instruments is clearly the better choice. If you want a structured way to think about the proportion, the Bitcoin investment allocation framework walks through the variables. The conversation matters more than the answer.

How the process works: pesos to bitcoin

Aureo México is registered with the SAT (Mexico's tax authority) as a "vulnerable activity" under the LFPIORPI anti-money-laundering law. It is not a bank and it is not licensed by the CNBV. That registration obliges it to identify the client and verify the source of funds, in more depth as the amount grows. It is not optional bureaucracy; it is the framework that applies.

For property sale proceeds, Aureo typically asks for:

• The public deed (escritura pública) or notarized purchase agreement that allows the property and its sale to be verified. If you held the property through a bank trust (fideicomiso), which is common for foreign owners in coastal and border areas, ask Aureo up front which trust documents to include.
• A bank statement or receipt showing the funds arriving in the client's account.
• If the property was held by a company: documents establishing the relationship between the client and the company, ownership of the property, the sale, and the movement of funds to the account that will transact.

The exact list, review time and approved amount depend on the file; confirm them before transferring. As of September 2026, the public fee is 1.00% from MX$200,000 to MX$2,000,000 and a custom quote above that. The pricing page presents it as having no hidden spread or SPEI fee; the quote should identify the reference price, fee and net bitcoin delivered.

Purchased bitcoin is sent to the wallet the client designates. Aureo publishes that it holds no client balances: it converts when pesos arrive and delivers to the saved address. Before moving property-sale proceeds, confirm the network, address, price-fixing moment and settlement window in writing.

How the process works: bitcoin to pesos

When a client wants to sell a meaningful amount of bitcoin to buy property, the legitimate origin of the funds also has to be established. Evidence can include:

• Proof of income or wealth: if the bitcoin position is consistent with the client's documented economic profile, this may be sufficient.
• Proof of original purchase: platform reports, bank receipts and the history of the position.
• Bitcoin traceability: addresses and TXIDs connecting the original purchase to the wallet used for the sale.

In the flow Aureo publishes as of September 2026, the client pays a Lightning invoice from their wallet and receives pesos by SPEI in the registered account. Do not assume third-party settlement or another network is available: if the property transaction requires a different account, confirm feasibility before sending bitcoin.

How volatility and execution are handled

Bitcoin moves quickly, and on transactions of this size execution matters. Before moving funds, request a quote that states its validity window, reference price, acceptance point and what happens if the transfer arrives later. If you want tranches or a conditional order, ask whether that service is available and what it costs; do not assume it is included in the public fee. The total timeline depends on document review and should be agreed for the specific file.

What happens with taxes

Aureo does not replace your accountant. These points summarize the statute to prepare the conversation; the SAT has published no bitcoin-specific position, and this article does not state whether the provider withholds ISR:

1. Property sale. For individuals, article 126 assigns the provisional-payment calculation, withholding and remittance to the notary. The primary-residence exemption in article 93, section XIX, has a 700,000-UDI ceiling and, among other conditions, requires that you did not use the exemption in the previous three years. Ask the notary and your accountant to confirm residence, evidence and scope before relying on it.
2. Later bitcoin purchase and sale. Buying after receiving the pesos does not itself transfer ownership of the bitcoin; a later sale can create a gain or loss. Applying the general disposal rules to bitcoin is an interpretation to validate with your accountant. The tax guide and calculator prepare, but do not replace, the professional calculation.
3. Company transaction. The accounting and tax regime changes when a company transacts. Review the corporate framework and confirm with Aureo and your accountant which report, invoice and cost evidence you will receive before transacting.

What level of support Aureo provides

The Patrimonio page offers a contact route for reviewing large transactions. Before engaging, request the scope in writing: documentation, quote, settlement evidence, wallet support and follow-up. If you are considering Multi-Institution Custody (MIC) via Onramp, confirm title, signers, costs, jurisdiction and recovery; the custody guide helps compare it with self-custody and traditional custodians.

What Aureo does not do yet

A third scenario is direct payment for a property in bitcoin, or a seller receiving bitcoin as consideration. Aureo's public pages describe buying and selling bitcoin, not an integrated real-estate closing service.

In other words, Aureo does not sit inside the property transaction to receive bitcoin from one party and settle pesos to the other as the closing operator. Real estate transactions in Mexico involve notaries, tax obligations, document validation and legal structures that require specialized expertise.

What Aureo can do is help each party on their side of the conversion:

• If the buyer holds bitcoin and needs pesos to close, Aureo can convert that bitcoin.
• If the seller receives pesos and wants to move part of the proceeds into bitcoin, Aureo can execute that OTC purchase.

Legal and notarial coordination remains with the appropriate advisers. Do not assume Aureo can pay a notary, seller or other third-party account; confirm that before structuring the closing.

Quick summary

Risks to keep in view

• Volatility: bitcoin has fallen 75% or more from its peak in every previous bear cycle. Converting property sale proceeds to bitcoin exposes that capital to that volatility.
• Tax obligations: selling real estate triggers Mexican obligations (ISR withheld by the notary, VAT in some cases, local acquisition taxes and notary fees). A later conversion does not remove them, and selling bitcoin has its own treatment. Consult a Mexican accountant, and if you are not a Mexican tax resident, one who handles cross-border cases.
• Source of funds: Aureo is required to verify the legitimate origin of funds. Incomplete documentation delays or prevents the transaction.
• Custody: once you receive bitcoin, its custody is your responsibility. Aureo can guide you on self-custody or coordinate MIC on request, but it does not hold client balances by default.
• No state backing: bitcoin is legal in Mexico but is not legal tender and is not backed by Banxico, the IPAB deposit insurer or Condusef.

Short glossary

OTC (over-the-counter): a transaction coordinated between two parties outside an exchange's public order book, used for amounts where book liquidity would be insufficient or the order would move the price against the client.

On-chain analysis: review of the transaction history of one or more addresses on the Bitcoin blockchain to verify the origin of funds.

Persona moral: a Mexican legal entity (S.A., S. de R.L., S.A.P.I., etc.) as opposed to an individual (persona física). Transacting through one requires additional documents on ownership, control and financial statements.

Enhanced due diligence: the level of documentary review applied to high-value or higher-risk transactions: identity, source of funds, purpose and, where applicable, on-chain analysis.

Self-custody: a model in which the owner directly controls the private keys to their bitcoin, without relying on a custodian. The seed phrase is the backup that allows those keys to be recovered.

Price lock: a guaranteed fixed price for a set window. Aureo does not offer one; the applicable price is the market price at execution.

Next step

If you are evaluating a specific transaction, write with the general context: approximate amount, whether you will transact personally or through a company, and whether the flow is pesos to bitcoin or bitcoin to pesos. With that, Aureo can tell you up front which documents will be needed and how to structure the process.

For tickets from MX$200,000, the route is Patrimonio: that page is where you book the 45-minute call with an Aureo founder. If the property or the funds sit in a company, start with Businesses. If you want a head start, you can create your Aureo account and complete verification; inside the app you can always reach support and talk to a person.