Get Started →

Borrow against crypto: how crypto-backed loans actually work

Borrowing against crypto means depositing Bitcoin or Ethereum as collateral on a lending platform and drawing a loan — usually in stablecoins — against it, typically at 30–50% of the collateral's value. You keep ownership and market exposure, and because loans are generally not taxable events, you access cash without selling. This is educational content, not personalized financial or tax advice; confirm your situation with a licensed professional.

By Roman Rida, founder of OverseasDeFi · Not a licensed financial advisor · Last updated July 23, 2026 · Reviewed quarterly

Key facts

How does borrowing against crypto actually work?

A crypto-backed loan has four steps: you deposit collateral, borrow against it, repay on your own schedule, and withdraw the collateral. On a DeFi platform such as Aave, the whole cycle runs through smart contracts with no application, credit check, or banker involved.

  1. Deposit collateral. You supply BTC or ETH to the lending market from a wallet you control.
  2. Borrow stablecoins. You draw a loan — typically USDC or USDT — up to a percentage of your collateral's value, called the loan-to-value ratio (LTV). Platforms may allow 70–80%; conservative borrowers use far less.
  3. Repay on your schedule. There is no fixed term and no monthly payment. Interest accrues at a floating rate that moves with market demand; you repay whenever you choose.
  4. Withdraw your collateral. Once the loan is repaid, your full collateral — including any price appreciation while it was locked — comes back to your wallet.

The number that governs everything is the LTV. Borrow $35,000 against $100,000 of Bitcoin and your LTV is 35% — a wide buffer. Borrow $70,000 against the same collateral and a routine 20% price drop puts you near forced liquidation. The platform doesn't decide your risk level; your LTV does.

Borrowing vs. selling: what's the real difference?

The choice most holders actually face isn't between lending platforms — it's between borrowing against crypto and selling it. The two paths produce the same cash today with very different consequences.

Selling $35,000 of BTCBorrowing $35,000 against BTC
OwnershipGone — you no longer hold the BTCKept — BTC remains yours as collateral
Future upsideForfeited on the sold amountRetained on the full position
Taxes todayCapital gains due on any appreciation — up to 20% federal long-term, plus possible 3.8% NIITGenerally none — a loan is generally not a taxable event (see below)
Ongoing costNoneFloating interest on the borrowed amount
New risk introducedNone — position is closedLiquidation risk if collateral value falls too far
Credit checkNot applicableNone — fully secured by collateral

Neither column is automatically right. Selling is simpler and ends the story; borrowing preserves the position at the price of interest and liquidation risk. The mistake is not knowing the second column exists — most long-term holders discover it years after it would have been useful.

Is borrowing against crypto taxable?

Loans are generally not taxable events. Borrowing against your crypto — rather than selling it — typically does not trigger capital gains, because pledging collateral is not a disposition of property. That principle is well established for loans generally; the IRS treats crypto as property under Notice 2014-21.

Two honest caveats. First, the IRS has issued no guidance specific to crypto-backed loans — the treatment above rests on general property and lending principles, which is exactly how cited tax practitioners frame it. Second, the "generally" matters, because three situations can create taxable events inside a borrowing position:

This is the area where a crypto-literate CPA earns their fee. The strategy is sound; the details are personal.

What are the risks?

Borrowing against crypto introduces real risks that selling does not, and naming them plainly matters more than the pitch. There are four.

Liquidation risk

If your collateral's value falls far enough, the protocol automatically sells part of it to repay your debt — usually with a penalty fee. The math is knowable in advance: at a 35% LTV, Bitcoin would need to fall by more than half before a typical liquidation threshold is reached; at 70% LTV, an ordinary bad month can do it. Position size is the entire game.

Smart-contract risk

DeFi platforms are software, and software can be exploited. Established protocols like Aave have operated since 2020, hold billions in deposits, and undergo continuous audits — which reduces this risk without eliminating it. Newer, higher-yielding platforms carry more of it.

Interest-rate risk

DeFi borrow rates float with utilization. A loan that costs a few percent annually in a quiet market can cost meaningfully more when demand for stablecoin borrowing spikes. Budget for the range, not the quote.

Custody and platform risk

On DeFi platforms you hold your own keys and positions are visible on-chain; the 2022 failures of centralized lenders were failures of custody and opaque balance sheets, not of the on-chain lending model. Structural difference, not a guarantee: self-custody shifts responsibility for security onto you.

How OverseasDeFi thinks about this. We teach borrowing as a cashflow tool, not a way to buy more crypto. The pattern we consider defensible: conservative LTV — 30 to 40 percent, never near the platform maximum — borrowed in stablecoins, deployed into conservative yield that services its own interest. If a loan only works when the market cooperates, it doesn't work. The holders we serve spent fifteen years building their stack; the first rule is that no borrowing strategy is allowed to threaten it.

Frequently asked questions

How much can I borrow against my Bitcoin?

Most DeFi lending markets let you borrow up to roughly 70–80% of your Bitcoin's value, but conservative borrowers stay far below that. At a 35% loan-to-value ratio, $100,000 of BTC supports a $35,000 loan with a wide buffer against price drops.

What happens if my collateral drops in value?

If your collateral falls enough that your loan crosses the platform's liquidation threshold, part of your collateral is sold automatically to repay the debt — usually with a penalty. Borrowing at a low loan-to-value ratio and monitoring your position are the primary defenses.

Do crypto loans affect my credit score?

No. DeFi lending platforms don't run credit checks, don't require income verification, and don't report to credit bureaus. The loan is secured entirely by your collateral, which is also why liquidation — not a collections process — is what happens if it goes wrong.

Can I lose my crypto by borrowing against it?

Yes, partially or fully, if the position is liquidated after a large price drop, or in the event of a smart-contract exploit on the platform. Conservative loan-to-value ratios, established protocols, and self-custody reduce — but never eliminate — these risks.

Sources

  1. DeFiLlama — Aave protocol TVL (accessed July 23, 2026)
  2. Aave — live market data, rates, and risk parameters
  3. IRS Notice 2014-21 — virtual currency treated as property
  4. IRS Topic 409 — capital gains and losses
  5. Aave documentation — liquidations

Educational content only. Nothing on this page is personalized financial, tax, or investment advice, and OverseasDeFi is not a licensed financial advisor. DeFi involves risk, including liquidation, smart-contract failure, and loss of principal. Rates and figures are point-in-time and change continuously; verify against live sources before acting. Consult a qualified professional about your specific situation.