Can I Buy Bitcoin with Banamex?
Not through the bank. Banamex offers no crypto trading or custody services, and it has no Bitcoin exchange-traded product. Under the 2018 Fintech Law and Banco de México's Circular 4/2019, Mexican banks may hold crypto-assets only for approved internal purposes, never on behalf of customers.
Banamex is useful for moving pesos. SPEI, Banco de México's interbank payment system, settles transfers in seconds. Banamex makes the service available around the clock in App Banamex and BancaNet. After sending pesos to a crypto exchange in Mexico and passing its identity checks, you own the coins outright.
In our tests, Banamex has not refused a single SPEI transfer to a licensed exchange. The usual friction comes from the transfer cap described below and from card payments, which Mexican issuers decline far more often.
How to Buy Crypto with Banamex
The lowest-cost route is a SPEI transfer to Bybit, followed by a spot trade. You can then send the coins to a wallet under your control. Bybit introduced peso deposits and withdrawals through SPEI in late 2024 and continues to charge no deposit fee.
Steps to buy crypto with Banamex:
- Create and verify a Bybit account: Register on Bybit, then complete identity verification (KYC) using a valid INE card or Mexican passport. Have your CURP ready. The names on your Bybit and Banamex accounts must match, or the deposit will bounce back.
- Raise your MTU first: In the Banamex app, open the detail view for your debit account, select Límite de transacción, and change the amount. Confirm the update with your NetKey. Setting the limit first avoids a rejected transfer and a support ticket.
- Copy the peso deposit details: Open Buy Crypto in Bybit, choose Deposit, select MXN and pick bank transfer. Bybit will provide an 18-digit CLABE account number and a reference. A missing or altered reference is the most common reason funds arrive but remain unmatched for hours.
- Send the SPEI transfer: Add the CLABE as a new beneficiary in App Banamex or BancaNet, then make the transfer. BancaNet needs about 30 minutes to activate a new beneficiary, so register it in advance. Our test payments appeared in under two minutes.
- Trade on the order book: After the pesos arrive, open the spot market and submit a limit order. The one-tap buy screen is easier, but it widens the quoted price.
Banamex Fees, Transfer Limits and Crypto Tax
Banamex charges nothing on its side. Your total cost depends on the transfer cap and the exchange's trading fee. You must also account for the SAT's April filing requirements.
Banamex costs and limits
- SPEI transfers: Transfers from App Banamex and BancaNet are free, settle in seconds, and operate every day of the year. Counter transfers at a branch carry a charge, so use the app.
- MTU cap: The Comisión Nacional Bancaria y de Valores requires banks to provide each customer with a personal transfer limit. From 1 January 2026, unconfigured accounts received an automatic ceiling, commonly 1,500 investment units (UDIS), or around MXN 12,800. You can raise or lower the limit as often as needed.
- Card payments: Banamex debit and credit cards work on some exchange payment pages. Surcharges of 2% to 4% are common, however, and payments are often declined. We use cards only for a small initial test.
Bybit fees
- SPEI deposit: Free and credited within minutes in our tests.
- Spot trading: Makers and takers pay 0.10% at the entry tier, with rates declining as 30-day volume rises.
- One-tap buy: The transaction is faster, but the built-in margin makes larger amounts cost more.
- Crypto withdrawal: Bybit charges a fixed fee based on the asset and selected network. Check the amount shown on the confirmation screen because rates can change.
- Peso withdrawal: Bybit supports SPEI withdrawals to your Banamex account. We check the current schedule before selling because peso withdrawal terms change more frequently than trading fees.
Crypto tax in Mexico
- What triggers tax: A sale, a swap from one coin to another, or a crypto payment all count as a disposal. Simply holding does not. Gains are added to your other income and taxed under Mexico's ISR at rates from 1.92% to 35%.
- The exemption most people miss: Article 93 of the income tax law exempts gains from disposals of movable property up to three times the UMA's annual value, around MXN 128,384 for 2026. Retain records showing that you remained below the threshold.
- Cost basis: Inflation indexing can adjust the acquisition cost using the national consumer price index between the purchase and sale dates, reducing the taxable gain.
- Filing: Individuals report crypto disposals in the annual declaration, filed with the SAT from 1 to 30 April. A provisional payment may apply when an asset is disposed of and counts toward the final bill. Exchanges do not withhold tax for you, making a contador worth the fee, especially when trades span several platforms.
Banamex Cryptocurrency Policy
Banamex has not published a crypto policy because the decision does not belong to the bank. Article 30 of the Fintech Law authorizes Banco de México to decide which crypto-assets regulated institutions may use. Circular 4/2019 then restricted banks to internal operations that require prior approval. Banxico has approved none, leaving retail access closed.
No exchange holds a CNBV crypto license because Mexico does not issue such licenses. The Comisión Nacional Bancaria y de Valores authorizes payment institutions, and Bitso connects to the banking system through one of them, Nvio Pagos México. Binance follows a similar model with a local partner. Bybit, Coinbase and OKX operate in Mexico from abroad.
This position is unlikely to change soon. Citi sold a 22.6% stake in April 2026, bringing outside ownership close to 49%. Full separation is scheduled for early 2027, with a listing to follow. A bank preparing for an IPO is unlikely to challenge the regulator.
Best Exchanges for Banamex Customers
Each platform listed below accepts pesos from a Banamex account, but the funding routes differ. The same trade-off applies across the list: local authorization brings higher trading fees, while the least expensive exchanges are supervised farther from Mexico City.
About Banamex
Banamex, formerly Banco Nacional de México, opened in June 1884. It introduced Latin America's first credit card and first cash machine. By its 142nd anniversary in 2026, the bank had more than 20 million customers, including 13.5 million digital customers. Its network comprised 1,261 branches, roughly 9,000 cash machines and over 38,000 staff.
Citi acquired the group in 2001 and renamed it Citibanamex before changing course. At the end of 2024, the consumer and small-business operation separated from Citi's institutional arm and restored the Banamex name. Fernando Chico Pardo bought 25% in December 2025 and became board chair.
Customers use App Banamex, and BancaNet, with NetKey authorization for payments. Both connect to SPEI, CoDi and Dimo. Once the transfer limit is set, that infrastructure makes exchange funding straightforward.
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Final Thoughts
Buying Bitcoin with Banamex requires two separate services: the bank transfers your pesos, then an exchange sells you the asset. That arrangement remains in place while Circular 4/2019 stands.
We recommend Bybit for the exchange step. At the stated 0.10% spot rate, the exchange trading commission on MXN 20,000 is about MXN 20 before any spread, conversion cost, or withdrawal fee. Bitso is better suited to customers who value local authorization enough to accept an entry fee roughly six times higher.
Whichever exchange you use, adjust the MTU in App Banamex before making the first transfer. Send a small test payment to verify the CLABE and reference, then download statements every month. Tax is calculated when you sell or swap, not when pesos enter your account. Reconstructing transactions from memory in April is how people overpay.
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