Cryptocurrency and trading with LLC: complete tax guide for traders

19% to 30% scale. How to structure your crypto trading through a US LLC. Tax implications, reporting requirements and optimization strategies.

Crypto capital gains in Spain are taxed on a 19% to 30% scale, and Modelo 721 forces you to declare balances on foreign exchanges from 50,000 euros upward.

Cryptocurrency trading through a US LLC is one of the more complex areas of LLC taxation. Here's a clear guide for crypto traders and investors.

Does a US LLC make sense for crypto trading?

It can, depending on your situation. The potential benefits:

Operational advantages:

  • Access to US-based crypto exchanges and platforms with full features
  • Kraken offers corporate accounts with access to 200+ cryptocurrencies, institutional-grade staking, and OTC trading desk
  • Interactive Brokers provides access to crypto alongside 150+ traditional markets (stocks, bonds, futures, forex), all from one LLC account
  • Tradovate for futures trading on CME, CBOT, NYMEX. accessible through your LLC
  • Professional invoicing for crypto-related businesses (advisory, development, advisory)
  • Asset protection from LLC structure. your personal assets are separated from trading risk

Tax considerations:

  • The LLC itself pays no US federal tax (pass-through)
  • Crypto gains are reportable in your country of residence
  • The LLC structure provides clear separation of trading activity from personal assets
  • Business expenses related to trading (software, data feeds, tools) are deductible

Important: The LLC doesn't eliminate or defer crypto taxes in your country of residence. All gains must be declared.

How the IRS views cryptocurrency

The IRS treats cryptocurrency as property, not currency. This means:

  • Every crypto-to-crypto trade is a taxable event (in the US, for US taxpayers)
  • For non-residents with a US LLC: the gains flow through to you and are taxable in your country of residence
  • The IRS requires disclosure of virtual currency activity on Form 1120

Your LLC must track:

  • Date of each transaction
  • Amount received or paid
  • Fair market value at time of transaction
  • Gain or loss on each transaction
  • Wallet addresses used

Crypto exchanges for your LLC

Kraken (Recommended for crypto-focused LLCs)

  • Corporate account available for US LLCs
  • 200+ cryptocurrencies available
  • Institutional staking with competitive yields
  • OTC desk for large trades ($100K+ per transaction)
  • Regulated in the US, compliant with FinCEN
  • Proof of reserves (transparent and audited) Breathe: at Exentax this is routine, we bring you up to date and the next review closes in one round, no drama.

Interactive Brokers (For diversified portfolios)

  • Access to crypto AND traditional markets (stocks, options, futures, forex)
  • 150+ global markets from one account
  • Tradovate integration for futures trading (CME, CBOT, NYMEX)
  • Low commissions, professional-grade tools
  • SIPC protection for securities (crypto held separately)

Coinbase Prime (For institutional-grade custody)

  • Institutional custody solutions
  • Advanced trading features
  • Insurance on custodied assets

Crypto gains in your country of residence

Spain: Crypto gains are taxed as savings income (rendimientos de capital mobiliario/ganancias patrimoniales) at rates from 19% to 28%. All transactions must be reported. Modelo 720 applies if foreign crypto holdings exceed €50,000.

Mexico: Crypto gains may be subject to ISR (Income Tax) at rates from 1.92% to 35%. The SAT has been increasing its focus on crypto reporting. Regulations are still evolving.

Colombia: Crypto assets are treated as financial assets. Gains are subject to income tax at rates from 0% to 39%. The DIAN requires declaration of foreign crypto holdings.

Argentina: Crypto gains may be subject to Impuesto a las Ganancias at rates from 5% to 35%. BCRA currency controls make the LLC structure particularly attractive for Argentine crypto traders.

Reporting requirements with a US LLC

If your LLC holds crypto or conducts crypto trading:

Form 5472: All transactions between you and the LLC must be reported, including crypto transfers. Capital contributions in crypto, distributions in crypto, all documented.

FBAR: If your combined foreign financial accounts (including some crypto exchanges) exceed $10,000, be aware of potential reporting obligations.

Virtual Currency Question on Form 1120: The IRS now requires disclosure of virtual currency activity.

Treasury management for crypto LLCs

For crypto-focused businesses, the financial stack includes additional tools:

What we don't do

We specialize in LLC formation and US compliance for business owners. Crypto-specific tax advice for your country of residence (whether gains are capital gains, ordinary income, etc.) requires a specialist in your country. We coordinate with local advisors for these questions.

The bottom line

A US LLC for crypto activity makes sense if you have a crypto-related business (trading advisory, crypto payment acceptance, blockchain development) or if you trade at significant volume. For pure personal crypto investing at small scale, the benefits are less clear-cut.

Crypto-specific compliance considerations

IRS virtual currency question

Since 2019, the IRS asks about virtual currency activity on tax forms. For your LLC's Form 1120, this question must be answered truthfully. If your LLC held, received, traded, or disposed of any digital assets during the year, the answer is "Yes."

Record-keeping for crypto

Crypto transactions generate significant documentation requirements:

  • Date and time of each transaction
  • Amount of cryptocurrency involved
  • Fair market value in USD at time of transaction
  • Wallet addresses (sending and receiving)
  • Exchange used
  • Purpose of transaction (trade, payment, transfer)

Tools like CoinTracker, Koinly, or CryptoTaxCalculator can help automate this record-keeping.

Staking and DeFi through your LLC

If your LLC earns staking rewards (through Kraken's institutional staking or DeFi protocols), these may be treated as income. The tax treatment varies by country:

  • Spain: Staking rewards may be treated as savings income (19-28%)
  • Mexico: Tax treatment still evolving, generally treated as income
  • Colombia: Treated as financial income

Security best practices for crypto LLCs

  • Use hardware wallets for long-term storage (Ledger, Trezor)
  • Enable all security features on exchange accounts (2FA, whitelisting)
  • Document custody arrangements in your Operating Agreement
  • Consider crypto insurance for larger holdings
  • Never store all assets on a single exchange

Closing out, here's a related piece that sits naturally next to this article: Taxes with international clients in Spain: what nobody tells you helps round off the context.

Legal and regulatory references

This article relies on rules currently in force. Main sources for verification:

  • United States. Treas. Reg. §301.7701-3 (entity classification / check-the-box); IRC §882 (tax on foreign income effectively connected with a US trade or business); IRC §871 (FDAP and withholding on non-residents); IRC §6038A and Treas. Reg. §1.6038A-2 (Form 5472 for 25% foreign-owned and foreign-owned disregarded entities); IRC §7701(b) (tax residency, substantial presence test); 31 U.S.C. §5336 (Corporate Transparency Act, BOI Report to FinCEN).
  • Spain. Law 35/2006 (LIRPF), arts. 8, 9 (residency), 87 (income attribution), 91 (CFC for individuals); Law 27/2014 (LIS), art. 100 (CFC for companies); Law 58/2003 (LGT), arts. 15 (anti-abuse) and 16 (simulation); Law 5/2022 (Form 720 penalty regime after CJEU C-788/19 of 27/01/2022); RD 1065/2007 (Forms 232 and 720); Order HFP/887/2023 (Form 721 crypto). Breathe: at Exentax this is routine, we bring you up to date and the next review closes in one round, no drama.
  • Spain–US treaty. BOE of 22/12/1990 (original DTT); Protocol in force since 27/11/2019 (passive income, limitation on benefits).
  • EU / OECD. Directive (EU) 2011/16, amended by DAC6 (cross-border arrangements), DAC7 (Directive (EU) 2021/514, digital platforms) and DAC8 (crypto-assets); Directive (EU) 2016/1164 (ATAD: CFC, exit tax, hybrid mismatches); OECD Common Reporting Standard (CRS).
  • International framework. OECD Model Convention, art. 5 (permanent establishment) and Commentaries; BEPS Action 5 (economic substance); FATF Recommendation 24 (beneficial ownership).

Applying any of these rules to your specific case depends on your tax residency, the LLC's activity and the documentation you keep. This content is informational and does not replace personalized professional advice.

Next steps

Now that you have the full context, the natural next step is to map it against your own situation: what fits, what doesn't, and where the nuances depend on your residency, your activity and your volume. A quick review of your specific case usually saves a lot of noise before taking any structural decision.

Banking and tax facts worth clarifying

Fintech and CRS information evolves; here is the current state:

How to read the crypto-trading LLC question as a stable structural mapping rather than as a community shortcut

The crypto-trading LLC question reads more usefully as a stable structural mapping between the residence of the beneficial owner, the type of activity (occasional vs habitual) and the corresponding tax treatment, than as a community shortcut. The mapping doesn't change with the season.

Before going further, put numbers on your case: the Exentax calculator compares, in under 2 minutes, your current tax bill with what you would carry running a US LLC properly declared in your country of residence.

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Notes by provider

  • Mercury operates with several federally chartered partner banks and FDIC coverage via sweep network: mainly Choice Financial Group and Evolve Bank & Trust, with Column N.A. still in some legacy accounts. Mercury is not itself a bank; it is a fintech platform backed by those partner banks. If Mercury closes an account, the balance is typically returned by paper check mailed to the account holder's registered address, which can be a serious operational problem for non-residents; keep a secondary account (Relay, Wise Business, etc.) as contingency.
  • Wise ships two clearly different products: Wise Personal and Wise Business. For an LLC you must open Wise Business, not the personal account. Important CRS nuance: a Wise Business held by a US LLC sits outside CRS because the account holder is a US entity and the US is not a CRS participant; the USD side operates via Wise US Inc. (FATCA perimeter, not CRS). In contrast, a Wise Personal opened by an individual tax-resident in Spain or another CRS jurisdiction does trigger CRS reporting via Wise Europe SA (Belgium) on that individual. Opening Wise for your LLC does not bring you into CRS through the LLC; a separate Wise Personal in your own name as a CRS-resident individual does report.
  • Wallester (Estonia) is a European financial entity with an EMI/issuing-bank licence. Its European IBAN accounts are within the Common Reporting Standard (CRS) and therefore trigger automatic reporting to the tax administration of the holder's country of residence.
  • Payoneer operates through European entities (Payoneer Europe Ltd, Ireland) that are also in scope for CRS for clients resident in participating jurisdictions.
  • Revolut Business: when paired with a US LLC, it operates under Revolut Technologies Inc. with Lead Bank as its US banking partner. The account delivered is a US account (routing + account number); no European IBAN is issued to a US LLC. The European IBANs (Lithuanian, Belgian) belong to Revolut Bank UAB and are issued to European clients of the group. If you are offered a European IBAN tied to your LLC, confirm exactly which legal entity holds that account and which regime it reports under.
  • Zero tax: no LLC structure delivers "zero tax" if you live in a country with CFC/tax transparency or income attribution rules. What you achieve is no double taxation and correct reporting at residence, not elimination.

Legal & procedural facts

FinCEN and IRS reporting requirements moved recently; the current state is:

  • BOI / Corporate Transparency Act: your LLC is NOT required to file (a competitive advantage). After FinCEN's March 2025 interim final rule, the BOI Report obligation was narrowed to "foreign reporting companies" (entities formed OUTSIDE the US and registered to do business in a state). A US-formed LLC owned by a non-resident does NOT file the BOI Report: one fewer filing on your calendar, less paperwork, and a cleaner structure than ever. If your LLC was formed before March 2025 and you already filed BOI, keep the acknowledgement. The regulatory status can change again: we monitor FinCEN.gov on every filing and, if the obligation comes back, we handle it at no extra cost. Current status verifiable at fincen.gov/boi.
  • Form 5472 + pro-forma 1120. For a Single-Member LLC owned by a non-resident, the final regulations of Treas. Reg. §1.6038A-1 (in force since 2017) treat the LLC as a corporation for 5472 purposes. Procedure: pro-forma Form 1120 (header only: name, address, EIN, tax year) with Form 5472 attached. It is filed by certified mail or fax to the IRS Service Center in Ogden, Utah, not e-filed via standard MeF. Due date: April 15; extension via Form 7004 to October 15. Penalty: $25,000 per form per year, plus $25,000 per additional 30 days of non-filing after IRS notice.
  • Substantive Form 1120. Only applies if the LLC has filed a check-the-box election to C-Corp (Form 8832): it then pays 21 % federal corporate tax and files a substantive 1120. A standard disregarded LLC does not file a substantive 1120 and does not pay federal corporate tax.
  • EIN and notice. Without an EIN you cannot file 5472 or BOI. The IRS does not warn before imposing penalties; you find out when an EIN is flagged or a later filing is rejected. Relax: at Exentax this is what we do every week, we close it before the letter ever lands in your inbox.

Legal and procedural facts

Read this section as a checklist with teeth: each point flags a real failure mode we have seen in cross-border LLC files. Skip none of them — most reassessments and account closures we clean up later trace back to one of these items.

How crypto, LLC and residency fit into a defensible reporting

Crypto trading inside a US LLC sounds attractive: zero federal tax in a pass-through SMLLC with all weight on residency. But crypto introduces three specific complications — income classification, activity substance and on-chain traceability — to understand before incorporating anything. This is the read we do at Exentax.

  • Income classification. In Spain, AEAT distinguishes capital gain (crypto buy-sell) taxed at savings base (19-28%) from business income (habitual trading with minimal organisation) taxed at general base (up to 47 %). Operating through SMLLC does not change classification: organised, professional pattern means business income; sporadic means capital gain.
  • Trading vs. long-term investing. A "buy & hold" profile with 5-15 trades/year fits as capital gain — uses savings rates and the pass-through SMLLC adds little beyond operational order. A daytrading profile with 200+ trades/year in an SMLLC requires business-income arguing and opens expense deductions but also forces marginal taxation.
  • DAC8 and reporting. From today European CASPs report client positions and movements to AEAT. Non-EU exchanges (Coinbase US, Kraken US, Binance US) are not directly under DAC8 but fall under CARF (OECD Crypto Reporting Framework) and CRS when balances flow through banking.
  • On-chain as evidence. Movements in own wallets are traceable and public. AEAT can request acquisition cost proof and ownership. Keep a detailed log (Koinly, Cointracking) from the first move; reconstructing 3 years of DEX trading later is disproportionate work.

What we are asked the most

Does running crypto in my LLC dodge Modelo 721? No: Modelo 721 obliges the Spain tax resident to declare foreign crypto assets above 50,000 €. Nominal ownership by the LLC does not exempt — AEAT looks at substance, not form.

Should I move crypto to Portugal or UAE? Only with real relocation and majority stay. Portugal keeps exemption for holdings >365 days but the daytrading tax of January 2023 limits the appeal for professionals. UAE keeps zero tax on crypto, but requires effective residency.

At Exentax we model the crypto reporting at residency, prepare Modelo 721 and Koinly traceability and, when it pays, we model a jurisdiction change on 5-year numbers.

Your next step with Exentax

Our position here is deliberate and conservative: we optimise for what survives an inspection, not for the most aggressive headline number. The points below are the ones we are willing to defend in writing. Relax: at Exentax this is what we do every week, we close it before the letter ever lands in your inbox.

Why crypto taxation is rarely just about crypto

The tax treatment of cryptocurrency activity inside an LLC is rarely a clean, isolated topic. It usually depends on three other things at the same time: how the broker or exchange reports the activity, when fiat conversions happen relative to the trades themselves, and how the holding period is documented. Each of these influences which figure ultimately reaches the personal return of the member, and overlooking any of them tends to cause the kind of late discrepancy that is then expensive to reconcile. The simplest hygiene is to keep, for each calendar year, a single working file that reconciles the LLC's accounting record with the broker statements and with the on-chain history.

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