Written for Mexico. This analysis applies to Mexican federal tax law — ISR (income tax), IVA (VAT) and SAT rules — and cites Mexican statutes. Amounts are in Mexican pesos (MXN).
Two opposite myths circulate and both are expensive: "crypto pays no tax because it isn't regulated" and "crypto pays a sky-high special tax." The reality: there is no specific tax regime — and that means the general rules of the LISR apply, taxing gains at the ordinary rate (up to 35%) with none of the courtesies that listed shares do enjoy. Here's the map, move by move, with certainty labels where the law is silent.
The framework: virtual assets = property
The Fintech Law defines virtual assets and makes clear they are not legal tender; for tax purposes, the dominant reading treats them as intangible movable property. Direct consequences: buying and holding triggers no tax (unrealized appreciation isn't taxed); selling at a gain is a disposition of property — gain = price minus proven acquisition cost, taxable at the general rate (for anyone who trades habitually, the characterization migrates to business activity: same pesos, different mechanics, more obligations). The point almost everyone misses: the movable-property exemption for individuals (3 UMA of annual gain, ~$128,000) that applies to selling your car or your furniture is debatable for intangibles — the position of applying it is defensible but not settled (the fraction speaks of movable property; its extension to intangibles is not resolved); don't make it the pillar of your strategy.
Move by move
Crypto→crypto (BTC for ETH): it's a disposition — you realize the gain on the asset you hand over even if you never touched pesos (high confidence in the reading; it's the general barter rule and the international standard). The trader who "never sold to fiat" may owe years of tax. Staking, yield, airdrops, mining: taxable income at market value when received (high on the principle; moderate on the fine classification by type). Paying with crypto (the coffee, the watch): a disposition of the asset handed over — spending is selling. Losses: realized losses from disposition of property have narrow application rules (against gains within the same chapter, with limited carryforward — moderate confidence on the contours as applied to crypto); documenting them is worth exactly what they'll be worth against your next gains.
Visibility: anonymity is already a thing of the past
Exchanges that operate with Mexicans are a vulnerable activity (LFPIORPI, art. 17 fracc. XVI): they identify clients and report transactions above thresholds; the peso-crypto on-ramps pass through banks that report; and the international standard for automatic exchange of crypto information (CARF, the CRS of digital assets) is being rolled out globally with Mexico committed — the exact implementation status is worth verifying when you act, but the direction is unmistakable: exchanges will report your balances and transactions to the tax authorities just as banks do today. The "don't report and wait" strategy has a visible expiration date — and on the other side, spending undeclared crypto triggers the classic tax discrepancy. General labels: reporting realized gains at the general rate — safe; applying the movable-property exemption to crypto — defensible, not settled; a multi-year hold without realizing — safe (there is no taxable event); not reporting realized gains, betting on opacity — red zone with a clock. The practical part — how to document, compute costs and report — is in part two of this guide.
Do you hold significant crypto positions — or years of trading never put in order?
The crypto diagnostic does three things: it reconstructs your historical tax position (realized gains, cost bases, what's owed and what is already time-barred), defines the strategy going forward (vehicle, timing of realization, documentation), and evaluates strategic regularization of the past if there's any to do — before CARF makes it mandatory and expensive.
Frequently asked questions
Does holding for years without selling generate any tax?
No — with no disposition there is no realized gain and no taxable event, no matter how high it goes. The tax lives at the exit (sale, swap, payment). That makes the TIMING of realization your main planning variable — lower-income years, staged realization, coordination with losses.
Does crypto on foreign exchanges or in my cold wallet 'not exist' for the SAT?
It exists: your Mexican tax residence taxes worldwide income, bank on-ramps leave a trail, and CARF will standardize reporting by global exchanges. The cold wallet protects your keys, not your obligation — and the day you convert or spend, the flow shows up. The right question is not where you store it, but what documented story sits behind each peso that comes in and goes out.
Does it make sense to trade crypto through a company?
It depends on volume and purpose: a legal entity is taxed at 30% (better than a 35% marginal rate), deducts real expenses and brings order to the operation — but loses any personal-exemption argument and adds a dividend layer on withdrawal. For high-volume traders and corporate treasuries it usually wins; for the long-term holder, rarely. It's exactly the kind of comparison you run with numbers.
I received payments from clients in crypto — how do I invoice it?
The income is taxable at the value of the consideration (and invoiced in pesos like any sale — the CFDI is not issued 'in BTC'); the crypto received comes into your holdings at that cost, and its later sale generates its own gain or loss. Two tax events, not one — keeping them separate is what avoids paying twice or too little.
Let's talk about your case
The first step is always the same: an honest diagnostic of where you stand. Write to us on WhatsApp or call — we reply the same business day.