From Bitcoin to ETF: Inside the Section 351 Strategy Financial Advisors Are Starting to Ask About

What Is a Section 351 Exchange?

 Section 351 of the tax code is straightforward in concept: if you transfer property to a corporation in exchange for stock and continue to control that corporation, you are not subject to a capital gains tax.

This was originally designed to encourage corporate formation.

You and your co-founders contribute your respective assets, patents, equipment, and so on, to form a new company, and you get stock in return, and the IRS doesn't treat this as a taxable sale; you've just reorganized your holdings into corporate form.

In recent years, clever people realized you could use Section 351 to seed ETFs.

If you have a portfolio of low-cost basis stocks, you can contribute them to a newly formed ETF in exchange for shares in that ETF.

The legal basis is that ETFs are a Registered Investment Company, a ‘RIC,’ according to the ETF Rule 6c-11. A RIC is in the business of holding a diversified basket of securities.

You can swap your diversified basket of securities for shares in the ETF tax-deferred.

It’s legal, as long as everyone meets the minimum diversification requirements, and unless Congress changes the laws, this is likely to continue happening.

To appreciate the solution of exchanging digital tokens for shares in an ETF, it helps to understand exactly why a direct Section 351 exchange won’t work.

How Digital Assets Trade On A Stock Exchange

The first U.S. bitcoin futures ETF, the ProShares Bitcoin Strategy ETF (BITO), was approved and began trading on October 19, 2021. Since then, many digital asset ETFs and ETPs have launched, which all fall under 2 different legal structures.

Bitcoin Futures ETFs: These are proper RICs that hold futures contracts, not actual Bitcoin. They're structured to satisfy the "qualifying income" test (more on this complication below) by holding Bitcoin futures in a Cayman Islands subsidiary capped at 25% of assets, with the remaining 75% in high-quality debt. They're real ETFs under the 1940 Act, but they can't accept your actual Bitcoin; they want cash.

Spot Bitcoin ETPs: The Commodity Futures Trading Commission (CFTC) declared Bitcoin a commodity, not a currency, in September 2015, placing it under CFTC oversight like gold or oil. Funds like the iShares Bitcoin Trust (IBIT) actually hold Bitcoin, but here's the problem: they're Grantor Trusts regulated under the 1933 Securities Act, not the 1940 Investment Company Act. They issue trust units, not stock, and Section 351 specifically requires an exchange of property for stock in a corporation.

The Spot Crypto ETF "Bad Income" Problem

Even if you could solve the structural issues of holding spot crypto in a 40 Act ETF, you'd immediately crash into the "qualifying income" test. RICs are pass-through entities; they don't pay corporate tax as long as they distribute their earnings and follow certain rules.

As Peter Shea, a partner at Seward & Kissel and expert in securities law, explains: "To preserve RIC status and avoid getting hit with corporate-level tax, funds are statutorily required to derive at least 90% of their gross income from qualifying sources. If the 'bad income,' specifically from commodities, creeps over that 10% threshold, the entire structure is jeopardized."

The IRS treats income from directly holding cryptocurrency and all commodities as “bad income.”

Commodity futures are also regulated by the CFTC, which is why Bitcoin futures ETFs use Cayman subsidiaries; its financial engineering meant to keep Bitcoin-related income below the 10% limit.

It’s not pretty, but it fits the rules. Hold too much actual Bitcoin, though, and the fund fails the RIC test, and the ETF gets hit with a 21% corporate tax.

Custody and Valuation Issues

Even if we solved the legal structure, there are operational headaches. Traditional ETF custodians like BNY Mellon weren't exactly built to hold blockchain based tokens.

You need institutional-grade crypto custodians like Coinbase Prime, Gemini Trust, or Anchorage Digital to provide the "segregated vault" infrastructure. The traditional custodians would need to work with them, which is doable, but another moving part.

Then there's valuation.

Stock markets close at 4:00 PM. Bitcoin trades 24/7 like a currency. Section 351 requires that the stock you receive has approximately equivalent value to the property you transferred.

Get this wrong, and the IRS might view the mismatch as taxable compensation.

Chris Hayes, a partner at Practus, a leading firm for Section 351 exchanges, advises: "We would need to execute specific side letters to expressly stipulate the valuation cutoff.

To eliminate ambiguity, the pricing methodology must be anchored to an objective, verifiable standard." All parties would have to agree on a precise valuation that holds up to IRS scrutiny.

What Is A Digital Asset Treasury Company or DAT?

Recent market trends have given rise to the 'DAT,' or Digital Asset Treasury Company.

These are public C-Corps that hold digital assets. Because these are operating companies rather than trusts, investors purchase equity (stock) in the business rather than units in a fund. Strategy, a.k.a. MicroStrategy ($MSTR), popularized this strategy by aggressively converting its balance sheet to Bitcoin. Following in those footsteps, Strive Asset Management ($ASST) recently launched as a dedicated Bitcoin DAT, utilizing a Section 351 exchange to acquire its initial holdings.

"From a legal standpoint, an ETF is a RIC designed strictly to track the price of an underlying asset, a DAT is a C-Corp with a management team, a board, and the ability to actively leverage its balance sheet," explains David Adams, a partner at Mintz and an expert in Fintech, AI, and Crypto. "That 'operating company' status is precisely what unlocks the Section 351 tax-deferred exchange, allowing investors to contribute assets in a way that a standard ETF legally could not."

The key difference here is that you can do a Section 351 exchange into a C-Corp that holds Bitcoin; it's just a corporate formation. No RIC rules apply because it's not trying to be an investment fund.

You contribute your Bitcoin, you get stock in Bitcoin Co., and the IRS is happy because you still have economic exposure to Bitcoin, just in corporate form. But now you're holding stock in a single-asset Bitcoin company, and you wanted diversification. That's where step two comes in.

The Two-Step 351 Exchange: From Bitcoin to Boring ETF

With the legal structure clear, there is a viable, though more complex, path to converting spot crypto into a diversified ETF, on a tax-deferred basis, using a Section 351 exchange. The process involves two steps:

Step 1: Form the Treasury Holding Company. You execute a Section 351 exchange of your Bitcoin into a newly formed C-Corp Treasury Holding Company. This is a corporate formation where RIC diversification rules don't apply. You now hold stock in a corporation that owns Bitcoin. This transaction is straightforward and well-established.

Step 2: The Diversified ETF Exchange. Now, as a shareholder of the Treasury Company, participate in a second Section 351 exchange into a new diversified ETF. However, to meet the RIC diversification rules (25/50 rule, above), you contribute the Treasury Company stock, alongside a portfolio of other securities, 4 or more times the value of your Bitcoin holding.

By contributing stock in the Bitcoin holding company rather than Bitcoin itself, the ETF receives a security (which generates "good income") rather than a commodity (which generates "bad income"). The ETF now owns shares in a company that happens to hold Bitcoin, but from the ETF's perspective, it just owns corporate stock.

One critical warning: the IRS "Step Transaction Doctrine" could collapse this whole structure if it looks like a sham. If the Treasury Company immediately sells the Bitcoin after you contribute it, the IRS might argue this was really one transaction designed to circumvent the rules. So, the Treasury Company needs to actually hold the Bitcoin, and the ETF needs to hold the Treasury Company stock.

Has Anyone Done a Section 351 Crypto into an ETF?

 So far, this is just hypothetical. The Strive model demonstrated that the C-Corp structure works for the first step. And Strategy could easily be contributed to a Section 351 Exchange ETF. But no one has actually completed the full two-step journey, as far as anyone knows, from personal Bitcoin holdings into a diversified ETF using this process. The legal framework exists. The tax code provisions are in place, and the operational infrastructure (including custody and valuation) already exists. For now, it remains a fascinating example of how you can technically comply with three different regulatory frameworks while doing something none of them were really designed to accomplish, which is essentially the story of modern financial engineering.

Disclaimer

Please note this article is for information purposes only and does not in any way constitute investment advice. It is essential that you seek advice from a registered financial professional prior to making any investment decision.