Mexico crypto tax in 2026: ISR classification, payments and records

Mexico’s Fintech Law defines virtual assets for financial regulation, but it does not create a complete crypto income-tax code. Current legislation still lacks a dedicated cryptocurrency regime. Mexico’s taxpayer ombudsman, PRODECON, considers a private crypto sale an enajenación de bienes, or disposal of property, under ordinary Income Tax Law. That is an important official interpretation, not a cryptocurrency-specific SAT statute. A reliable report should calculate the economic result in MXN, show the asset-disposal route and preserve unresolved classification issues instead of promising one automatic flat rate.

The Fintech Law regulates assets; it does not set investor tax

Article 30 of the Ley para Regular las Instituciones de Tecnología Financiera defines a virtual asset as an electronically recorded representation of value used by the public as a means of payment and transferable electronically. It distinguishes virtual assets from Mexican legal tender, foreign currency and assets denominated in legal tender.

That definition governs authorised financial-technology institutions and Banco de México powers. It does not say that every Bitcoin gain is “other income,” impose one crypto rate or create a VAT exemption. Anti-money-laundering rules for professional service providers are also separate from an individual’s annual ISR computation.

PRODECON’s official analysis states that fiscal legislation has no specific crypto regime and concludes that a sale should be analysed as a property disposal under Article 14 of the Federal Tax Code and Chapter IV of the Income Tax Law. As PRODECON is the taxpayer ombudsman rather than a binding taxpayer-specific ruling, a material or unusual case should confirm the treatment.

Private crypto sales under the property-disposal approach

Under PRODECON’s approach, annual tax is not 20% of gross sales and not one flat crypto rate. Article 121 permits documented acquisition cost and specified deductions, while Article 120 applies the annual property-disposal calculation. The individual tariff can reach 35%, but the result depends on gain, years held and wider income.

1. Determine MXN consideration received.
2. Document acquisition cost under Article 123.
3. Identify direct acquisition or disposal commissions permitted by Article 121.
4. Review Article 124 update and movable-property rules.
5. Apply the annual Article 120 computation and credit provisional payments.

Article 124 normally decreases movable-property cost over time but allows a qualifying taxpayer, subject to regulation, not to make that decrease for movable assets that do not lose value through time, while still applying the statutory update. Whether this fits a crypto-asset should be documented; software should not promise an automatic inflation uplift.

No official Mexican crypto FIFO or average-cost rule appears in the reviewed sources. Trace actual acquisitions and own-wallet transfers where possible. Missing cost must be not computable rather than silently zero.

The 20% rule is a provisional payment on consideration

Article 126 contains a provisional-payment mechanism for property other than real estate. It generally applies 20% to the total transaction amount. A Mexican-resident buyer, or foreign buyer with a Mexican permanent establishment, generally withholds it; otherwise the seller generally pays within 15 days. A written lower-payment route can apply where regulatory conditions are met.

The article says no such payment is made for movable property other than securities or partnership interests where the operation is below MXN 227,400. This is a per-operation condition, not a tax-free annual crypto allowance. Whether a token fits that wording follows its classification.

The 20% amount is not final annual tax. Reconcile buyer or platform status, gross value, threshold, withholding certificate, payment date and credit carried to the annual return. A foreign exchange may not perform Mexican Article 126 withholding.

Sales, swaps, spending and wallet transfers

A sale for pesos is the clearest private-disposal case. A token swap exchanges ownership of one asset for another and should be valued in MXN for both sides. Spending crypto transfers it for goods or services. These are disposal candidates under the property-sale interpretation.

An internal transfer between wallets with the same beneficial owner is not a sale, but original cost and date continue. A protocol deposit, LP token or wrapper can create a different property right and should not be marked internal merely because no pesos were received.

Gifts, inheritance and below-market transfers can have other rules. Tokens representing securities, debt, services or NFTs may differ from payment tokens. Keep the legal right and contract with the report.

All values need reproducible MXN conversion. For BTC/USDT, document crypto price and USD/MXN conversion. An ECB rate is not the Mexican central-bank source, and a displayed rate of 1 is not a valid local-currency fallback.

Mining, staking, services and business activity

Crypto received for work is income before later disposal. Mining, staking, lending and DeFi rewards require fact-specific analysis: service or capital supplied, control time, market value and whether the activity is habitual. The later sale is separate and needs a cost connected to receipt treatment.

Habitual exchange, custody or intermediation can create business, VAT, invoicing and anti-money-laundering obligations. Frequent trading can also require business analysis. The Fintech Law and vulnerable-activity rules regulate services and institutions; they do not make every app user an ITF.

There is no blanket Fintech-Law VAT exemption for crypto. VAT depends on the legal transaction, territorial connection and service. A private disposal report should keep VAT and business activity in review.

Futures and perpetuals need actual contract treatment. Use realised close P&L, funding and fees. Opening trades and position snapshots are information, not a second profit. Reconstructed opening details must be labelled and must not overwrite broker P&L.

Losses and deductions need category discipline

Articles 121 and 122 contain specific property-disposal loss rules. A crypto loss cannot be freely offset against salary, business income or every capital item. The confirmed category used for the gain must govern the loss.

Direct commissions can be Article 121 deductions. Subscriptions, loan interest, hardware and personal internet are not automatic private-sale deductions. A business may have other documented deductions, but those should not be mixed into the private workpaper.

Missing basis is not a deductible loss and a missing price is not a zero-value sale. Continue calculating complete lines and show the non-computable quantity or proceeds in review.

Annual declaration and evidence checklist

Article 150 generally requires individuals with non-exempt, non-final income to file in April of the following year. SAT’s 2025 page expressly includes individuals who disposed of property. Exact forms, registration, provisional procedure and CFDI documentation depend on the taxpayer profile.

1. Confirm residence and calendar year.
2. Separate private disposals from business, services and rewards.
3. Import all exchanges, wallets and opening balances.
4. Value sales, swaps and spending in MXN.
5. Trace cost and direct commissions.
6. Document Article 124 treatment.
7. Review Article 126 for each relevant disposal.
8. Reconcile provisional payments to the annual result.
9. Keep losses within the confirmed category.
10. Separate derivatives, VAT and vulnerable-activity questions.
11. Mark incomplete positions not computable.
12. Retain exports, wallet proof, MXN rates and CFDI.

CoinTaxReporting can prepare the economic schedule but cannot turn PRODECON’s interpretation into a taxpayer-specific SAT ruling. The calculation-method guide explains data controls; the Spain guide is not a Mexican FIFO rule, and the global guide separates information exchange from tax.

Frequently asked questions

Official Mexican sources

• Mexican Chamber of Deputies: current Fintech Law
• PRODECON: cryptocurrency sales by individuals
• SAT: ISR Article 120, annual disposal tax
• SAT: ISR Article 121, deductions and losses
• SAT: ISR Article 126, provisional payment
• SAT: annual return for individuals

Official-source review completed 1 September 2026. The private asset-sale route is deliberately labelled as the PRODECON interpretation.

Disclaimer: This article is for general informational purposes only and does not constitute tax advice. For individual tax advice, consult a licensed tax professional.