Crypto Loan vs SBLOC vs HELOC vs Margin: Borrow Without Selling (2026)

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If you hold an appreciated asset and need cash, you have two choices: sell it, or borrow against it. Selling a winner — Bitcoin, a concentrated stock position, or home equity — realizes a capital gain and ends your upside. Borrowing against it does neither: you keep the asset, you keep the future appreciation, and, because a loan is not a sale, you don't trigger a taxable event to open it. That single fact is why the wealthy have borrowed against assets for decades instead of selling them. This page compares the four instruments that do it — a crypto-backed loan, a securities-backed line of credit (SBLOC), a margin loan, and a home equity line of credit (HELOC) — so you can match the one to what you actually own.

This is educational content, not tax, legal, or investment advice. I've spent 25+ years in traditional lending, and the mechanics below are checkable against primary sources — but every one of these loans can cost you the underlying asset if it moves against you, and the tax treatment depends on your specific facts. Confirm anything that matters with a licensed professional.

The one thing all four have in common

None of these four instruments is a taxable event to open. You are borrowing, not selling, so there is no disposition and no capital gain to report on the money you take out. Loan proceeds are not income. That is the shared foundation, and it's the reason "borrow, don't sell" is a real strategy rather than a slogan.

What separates them is four things: what you have to pledge, how much you can borrow against it, whether the interest is tax-deductible, and what happens when the collateral moves against you. Get those four right and the choice usually makes itself.

The comparison

Two honest caveats baked into that table. First, LTV and rate figures are ranges and structures, not quotes — advertised terms move constantly, so pull a live number from the lender rather than trusting any snapshot. Second, "taxable to open? No" is not the whole tax story: as the next section explains, an involuntary liquidation of your collateral is very much a taxable sale.

The catch nobody puts in the brochure: liquidation is a taxable sale

Here's the part that turns the tax advantage inside out. You don't owe tax to open any of these loans — but if your collateral falls and the lender liquidates it to cover the debt, that forced sale realizes your capital gain anyway, at the worst possible moment. FINRA says it plainly about SBLOCs: if the firm sells your pledged securities in a collateral call, "you could have to pay capital gains taxes on the proceeds from these sales." The identical logic applies to a crypto-backed loan (liquidation of your BTC is a disposition) and a margin call (forced sale of your shares). A HELOC is the outlier — the failure mode there isn't a taxable sale, it's foreclosure on your home.

So the tax benefit is real but conditional: borrowing defers the gain only as long as you stay well inside your LTV and never get liquidated. That's why LTV discipline — borrowing far below the maximum — is the entire game with asset-backed lending.

What each one is actually for

Crypto-backed loan — the only one that unlocks *crypto* without selling. SBLOCs, margin, and HELOCs all require you to have wealth sitting in a brokerage account or a house. If your appreciated asset is Bitcoin or Ether, a crypto-backed loan is the only instrument on this list that turns it into cash without a sale. The trade-off is that "who you borrow from" varies enormously — from an NMLS-licensed US lender with segregated custody to an unlicensed offshore platform to a non-custodial smart contract — and that choice drives most of your real risk. We rank lenders on exactly that in Most Regulated Crypto Lenders, and cover the mechanics in the crypto-backed loans guide.

SBLOC — flexible cash against a stock portfolio, with a leash. A securities-backed line of credit lets you borrow 50–95% against the securities in your account and spend it on almost anything — with one hard exception: FINRA is explicit that you "can't use the proceeds to purchase or trade securities." The two features that catch people off guard are that an SBLOC is a demand loan the lender "may call at any time," and that it's "sticky" — you can't easily move your account to another firm while it's pledged as collateral.

Margin loan — cheap leverage, if you're buying more investments. A margin loan is the mirror image of an SBLOC: its whole purpose is to buy more securities. Under Federal Reserve Regulation T, a broker can lend up to 50% of a new purchase; FINRA then requires you keep at least 25% equity (firms' "house" requirements are usually higher). Its distinct advantage is tax: margin interest used to buy taxable investments is deductible as investment interest expense on IRS Form 4952, capped at your net investment income. Its distinct danger is the speed of a margin call.

HELOC — the cheapest rate, secured by the thing you most want to keep. A HELOC typically offers the lowest rate of the four because it's secured by real estate, and the interest can be tax-deductible — but only, post-2017, if you use the money to "buy, build, or substantially improve" the home securing the loan. Use it for anything else and the deduction disappears. And the collateral is your house: miss the payments and, as the CFPB warns, "the lender can take your home."

The tax picture, in one paragraph

Opening any of these loans is tax-free because borrowing isn't a sale. Deductibility of the interest is where they diverge: margin interest for investing is deductible (Form 4952, limited); HELOC interest is deductible only for home improvements on the securing home; SBLOC and crypto-loan interest used for personal purposes generally are not. And a forced liquidation of collateral flips the script entirely — it realizes the gain you were trying to defer. None of this is tax advice; deductibility turns on how you use the money and your full return, so run your situation past a CPA.

Is borrowing against crypto a taxable event?

No. Taking a loan against your crypto is not a sale, so it does not realize a capital gain and the loan proceeds are not taxable income — the same treatment as an SBLOC, a margin loan, or a HELOC. The important exception is liquidation: if your collateral falls and the lender sells it to repay the loan, that forced sale is a taxable disposition. Borrowing defers the gain; it doesn't erase it.

Can you get an SBLOC on cryptocurrency?

Not in the traditional sense. A true SBLOC is offered by a broker-dealer against securities in a brokerage account, and crypto held directly isn't a security in a brokerage account. The crypto-native equivalent is a crypto-backed loan, which does the same job — cash against a pledged asset, no sale — against your coins instead of your stocks. Some in the industry now market this as a "crypto SBLOC"; we unpack that emerging term in What Is a Crypto SBLOC?.

Which is cheaper — a crypto loan or a HELOC?

A HELOC is usually the lowest headline rate of the four because it's secured by real estate and priced off the prime rate, while crypto-backed loan rates are higher and vary widely by lender and LTV. But "cheaper" depends on more than the rate: a HELOC puts your home on the line and can take weeks to close, while a crypto-backed loan can fund in hours against an asset you'd rather not sell. Compare the all-in cost — rate, fees, and what you're risking — not just the APR. Our borrowing-cost calculator helps you model it.

What happens if my collateral drops in value?

Every instrument here has a version of the same event: a collateral or maintenance call. If your pledged asset falls far enough, the lender asks for more collateral or repayment, usually within a few days — FINRA notes SBLOC firms typically allow "two or three days." If you don't meet the call, the lender can sell your collateral to cover the loan. For crypto loans this can happen automatically and fast; for a HELOC the endgame is foreclosure rather than a quick sale. The defense is the same everywhere: borrow well below the maximum LTV so a normal drawdown never triggers a call.

Can I deduct the interest on a crypto-backed loan?

Usually not. If you use the loan proceeds for personal spending, the interest generally isn't deductible — the same as an SBLOC used personally. Interest can become deductible when the borrowed money is used for a qualifying purpose: investment interest (if used to buy taxable investments, on Form 4952, capped at net investment income) or business interest. Because deductibility hinges on how you actually use the funds, this is a question for your tax professional, not a blanket yes or no.

Sources

All accessed July 17, 2026. Figures are ranges and structures; confirm current terms with the lender before relying on them.

• SBLOCs — FINRA, "Securities-Backed Lines of Credit" (LTV 50–95%, variable prime/SOFR + spread, non-purpose restriction, demand-loan/collateral-call mechanics, capital-gains warning on liquidation); SEC & FINRA Investor Alert, "Securities-Backed Lines of Credit".
• Margin loans — FINRA, "Margin Accounts" and Rule 4210 (Margin Requirements); SEC Office of Investor Education, "Investor Bulletin: Understanding Margin Accounts" (Reg T 50% initial, 25% FINRA maintenance).
• HELOCs — CFPB, "What is a home equity line of credit (HELOC)?" and "What You Should Know About Home Equity Lines of Credit".
• Tax treatment — IRS, "About Form 4952, Investment Interest Expense Deduction"; home-equity interest deductibility (buy/build/substantially-improve rule) under the Tax Cuts and Jobs Act, IRS Publication 936, "Home Mortgage Interest Deduction".
• Crypto-backed loan structure & lender regulation — see our primary-sourced comparison, Most Regulated Crypto Lenders.