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A Bitcoin-backed loan lets you borrow cash or a stablecoin while pledging BTC as collateral instead of selling it. The trade-off is leverage: if Bitcoin falls, your loan-to-value ratio (LTV) rises and the lender can require more collateral or sell your BTC. The safest way to evaluate one is to calculate the LTV at which liquidation occurs, price every fee, and understand exactly who controls and can reuse the collateral.
What a Bitcoin-backed loan is
This is a secured loan. You deposit Bitcoin with a lender, custodian, or smart contract and receive fiat currency or a stablecoin. The collateral value is normally higher than the amount borrowed, a structure called over-collateralisation. The European Securities and Markets Authority (ESMA) says crypto loans most often rely on collateral rather than a conventional creditworthiness assessment: customers place crypto-assets or funds in an account controlled by the service provider and receive a loan that is usually worth less than the collateral.
You do not sell the BTC when the loan is opened, so you retain economic exposure to a possible price increase. You also owe principal and interest, and the BTC can be sold if the agreement’s collateral requirements are breached. Keeping the asset therefore does not remove market risk; it combines that risk with debt.
How loan-to-value (LTV) controls the loan
The basic calculation
LTV = outstanding loan balance ÷ current collateral value × 100. The balance can include accrued interest and, depending on the contract, unpaid fees. Collateral value is usually based on the provider’s current BTC price or oracle price.
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For example, pledging 1 BTC valued at $60,000 and borrowing $24,000 produces a 40% LTV. If BTC falls to $40,000 while the debt remains $24,000, LTV becomes 60%. Nothing about the debt had to change for the risk to increase.
Initial, maintenance, margin-call, and liquidation levels
The initial LTV is the ratio when the loan starts. A maintenance or margin-call level is a warning threshold. A liquidation LTV is the point at which the lender or protocol may sell collateral. ESMA’s 2025 market report describes crypto-loan LTVs ranging from 20% to 80% and cites approximately 85% as a typical liquidation LTV. Those are market observations, not a universal safe level.
Using the illustrative $24,000 debt, an 85% liquidation threshold would be reached when collateral is worth about $28,235 ($24,000 ÷ 0.85), before allowing for additional interest or fees. A fast price move can cross that level before you can transfer funds or receive a notification.
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Can you borrow without selling your Bitcoin?
Yes, in the ordinary sense that opening the loan does not dispose of your BTC. You pledge it and receive a separate asset. However, the legal and economic result depends on the contract. If the lender liquidates the collateral, your BTC is sold. Some jurisdictions may also treat a transfer, conversion, or liquidation as a taxable disposal; the UK Financial Conduct Authority has said legal characterisation depends on the substance of the arrangement, and tax treatment differs by jurisdiction.
Borrowing can preserve upside exposure, but it also creates a repayment obligation during a volatile market. If you need cash to repay when BTC is down, you may have to sell at an unfavourable time or add other assets.
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Where the Bitcoin is held
Custody is as important as the interest rate. Ask who controls the private keys, whether the provider can reuse the collateral, which entity holds it, and what happens if withdrawals or the price feed stop.
Centralized lender custody
BTC may move into an account controlled by the lender or its custodian. You then have a contractual right to receive collateral back after repayment, subject to the agreement. You may not control the keys directly. Failure, an account freeze, or an insolvency proceeding can delay or prevent recovery.
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A bank or specialist custodian may keep BTC in a client account while the lender takes a security interest or other claim over it. Segregation can change insolvency treatment, but it does not by itself guarantee access or eliminate liquidation rights. Read the custody and security documents rather than relying on the word “segregated.”
Hybrid wrapped-Bitcoin flows
In the documented Coinbase flow, BTC is converted to Coinbase Wrapped Bitcoin (cbBTC) and transferred to a Morpho smart contract. This combines a centralized conversion step with on-chain collateral rules. You must evaluate the wrapper, the contract, the conversion process, and the entities involved, not just the headline LTV.
DeFi smart-contract custody
Decentralized protocols enforce collateral and liquidation rules in code, often using wrapped rather than native BTC. The protocol’s smart contracts, bridges, and price oracles can fail or behave unexpectedly during extreme volatility. Code execution does not remove counterparty-like dependencies: governance, oracle operators, custodians of wrapped BTC, and blockchain infrastructure can all matter.
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Interest, fees, and the real cost
Rates may be fixed for a stated term or variable for an open-ended facility. ESMA reported typical crypto-lending interest of 8% to 15%, loan-origination fees of 1.5% to 2.5%, and approximately 2.5% for early repayment in its 2025 report. It also cited liquidation fees of approximately 2%. These are broad market figures, not quotes for every borrower.
Your effective cost can include:
- Interest on the outstanding balance, calculated daily or under another schedule.
- An origination or arrangement fee deducted from proceeds or added to the balance.
- Conversion, wrapping, network, or spread costs when BTC or a stablecoin is moved.
- Custody or account charges.
- Early-repayment charges.
- Liquidation penalties and trading costs if collateral is sold.
Compare the cash you actually receive with the total amount required to close the loan. A low advertised rate can be outweighed by an origination fee, a variable rate, or a liquidation penalty.
What happens when Bitcoin drops
Margin call
As BTC falls, LTV rises. A margin call warns that the account is approaching its required level. The agreement may give you a cure window to deposit more BTC, repay part of the balance, or do both. Notice channels and response times vary; an email is not a guarantee that the market will wait.
Reserve’s published terms, updated June 2026, state a 70% margin-call threshold for Bitcoin-collateralized loans and describe a cure window. That is a provider-specific term, not a market standard.
Liquidation
If LTV reaches the liquidation threshold, the lender or protocol can sell enough collateral to cover principal, accrued interest, and permitted fees. Sales may occur through an exchange, an internal market, or an automated on-chain mechanism. A rapid price gap can produce a worse execution price than the displayed oracle price.
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For the documented USDC collateral flow, Coinbase states an 86% liquidation LLTV, while its help information states an additional 4.38% penalty when collateral is liquidated. The applicable contract controls whether a remaining shortfall can still be collected after the sale.
Provider terms illustrate why contracts differ
The following examples are snapshots of stated terms, not endorsements. Eligibility, geography, collateral types, fees, and rates can change, so verify the live agreement before borrowing.
| Provider or source | Stated feature | Qualification |
|---|---|---|
| ESMA market survey | 20%–80% typical LTV range; approximately 85% liquidation LTV; 8%–15% interest; 1.5%–2.5% origination; approximately 2.5% early repayment; approximately 2% liquidation fee; 1–36 month maturities | European market observations reported in 2025, not a quote |
| Coinbase documented flow | BTC converted to cbBTC, placed in a Morpho contract; 86% liquidation LLTV; 4.38% liquidation penalty | Current pages accessed October 18, 2026; terms are flow-specific |
| Reserve | 70% Bitcoin margin-call threshold and a cure window | Terms updated June 2026 |
| Strike | $5,000 minimum loan; rate unchanged for the loan duration; 0% liquidation fee | Current FAQ accessed October 18, 2026 |
| Binance | Fixed-rate, fixed-term loans with liquidation-LTV mechanics | Product description; exact thresholds depend on the facility |
| Abra | 4.33% APY USDC borrowing example | Displayed example updated September 19, 2026; the provider warns rates change frequently |
How to evaluate an offer before pledging BTC
- Calculate a conservative starting LTV. Use a price well below today’s quote and leave room for a weekend or overnight decline. No source establishes one universally safe LTV.
- Write down every trigger. Record initial LTV, margin-call LTV, liquidation LTV, the price source, update frequency, and whether interest is added to the balance.
- Model several price drops. Recalculate LTV after 10%, 25%, and 40% BTC declines, including projected interest and fees.
- Confirm the cure process. Check the notice method, grace period, minimum top-up, repayment settlement time, and whether a cure is possible during an outage.
- Read custody and reuse clauses. Determine whether collateral can be rehypothecated, pledged onward, lent, or commingled, and identify the legal entity holding it.
- Inspect liquidation mechanics. Ask how much is sold, which venues or contracts execute the sale, how the oracle price is selected, and whether a shortfall remains your responsibility.
- Price the whole term. Add interest, origination, conversion, custody, network, repayment, early-exit, and liquidation charges to the amount you will repay.
- Plan repayment before opening. Identify a source of fiat or stablecoins that does not depend on selling BTC after a major fall, and decide how a maturity rollover would be funded.
- Check jurisdiction and tax advice. Verify KYC eligibility, lending restrictions, insolvency treatment, and the tax consequences of borrowing, converting, or liquidating in your country.
Major risks
Market and leverage risk
A sharp BTC decline can push LTV through a warning and liquidation level quickly. Because the collateral is volatile and the debt is fixed or slow to change, leverage can force a sale near a market low.
Refinancing and maturity risk
Interest accrues while you remain exposed to BTC. A one-to-36-month maturity or an open-ended facility can still require repayment when your liquidity is unavailable. Rollover terms may change or disappear.
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A centralized lender or custodian can fail, freeze withdrawals, or misuse collateral. A contractual claim for return is not the same as holding the private keys yourself, and insolvency priority matters.
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Rehypothecation risk
If the agreement allows onward lending or pledging, additional counterparties and claims are introduced. Collateral may not be immediately recoverable even when your account display looks healthy.
Smart-contract, oracle, and bridge risk
DeFi arrangements add code, price-feed, bridge, and wrapped-BTC failure modes. An oracle outage or a stale price can affect a margin call or liquidation; an automated contract may not provide a human grace period.
Legal and tax risk
Rules differ by jurisdiction and by the substance of the arrangement. The FCA has noted that legal characterisation depends on substance. A liquidation or other disposal can have tax consequences even if the original intention was simply to borrow.
Fee and rate risk
Variable rates, one-time charges, conversion spreads, and penalties can make the effective cost far higher than a headline APR. Obtain the repayment amount and fee schedule in writing.
When this type of borrowing may fit
It can be appropriate only for a borrower who understands the liquidation mechanics, has substantial collateral headroom, and can repay without depending on a rising BTC price. It is a poor fit if a modest price decline would require selling essential holdings, if the interest is unaffordable from ordinary income, or if the borrower cannot tolerate losing custody access.
The central decision is not whether BTC might rise. It is whether you can meet every repayment and collateral call while BTC is falling, the lender is unavailable, or the facility cannot be rolled over.
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