A Bitcoin-backed loan lets you borrow cash or stablecoins while pledging BTC as collateral. You still carry the risk of Bitcoin’s price falling, and the lender or protocol may require more collateral, partial repayment, or a sale of your Bitcoin when the debt becomes too large relative to its value. The controlling details are contractual: who holds the keys, whether collateral can be reused, how the ratio is calculated, when a margin call starts, how long you have to cure it, and what fees apply if collateral is sold.
What is a Bitcoin-backed loan?
You pledge Bitcoin to secure a loan instead of selling the coins. The lender advances dollars, another fiat currency, or a stablecoin, and your BTC remains locked under the custody arrangement described in the loan and custody documents. You owe principal plus interest and any stated fees. If the collateral value falls, your loan-to-value ratio (LTV) rises even if you have not borrowed more. Interest can also increase the debt balance, pushing the ratio higher.
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These loans can provide liquidity without an immediate sale, but they do not remove market exposure. A borrower may owe the same dollar amount while the collateral loses value, and a fast price move can leave little time to respond. Availability, currencies, eligibility, and legal treatment vary by provider and jurisdiction.
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Custody is a contract question, not a universal feature of Bitcoin lending. Read both the lending agreement and the custody or account-control agreement. Identify the legal custodian, the parties controlling keys or withdrawal instructions, whether assets are segregated, and the release process after repayment.
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Third-party custodial account
In the SEC-filed Fold/Two Prime facility, all collateral is deposited with BitGo Trust under a tri-party account-control agreement. The filing says the lender receives a security interest but may not lend, invest, re-pledge, rehypothecate, or otherwise use or encumber the collateral. It may access the collateral only under the master loan agreement. Those protections describe that facility; they are not a rule for every lender.
Shared-signature escrow
BTCBacked describes a 2-of-3 multisignature escrow in which the borrower, lender, and platform each hold one key. Two signatures are required to move funds. Its description says a borrower may keep one key on a hardware wallet and that transactions can be checked on-chain. This is the provider’s description of its own product, not independent verification of every implementation. Holding a key does not cancel the lender’s contractual security interest or liquidation rights.
Questions to ask about custody
- Which legal entity is the custodian, and in what jurisdiction?
- Who controls each key, signing policy, or withdrawal instruction?
- Is my BTC segregated from the provider’s assets and other customers’ collateral?
- Can the lender lend, invest, re-pledge, rehypothecate, or otherwise reuse it?
- What happens to the collateral if the lender or custodian becomes insolvent?
- What exact steps release the BTC after the debt is repaid?
Can a Bitcoin lender lend out or rehypothecate my collateral?
Only the agreement can answer that question. Some documents prohibit reuse; others may permit it or use language that leaves the right broad. The Fold filing expressly bars lending, investing, re-pledging, rehypothecation, and other use or encumbrance of collateral in its specified transaction. A different product could have materially different rights. Do not infer “cold storage,” segregation, or non-reuse from an advertising phrase.
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What does 50% LTV mean?
LTV is the debt balance divided by the current collateral value:
LTV = loan balance ÷ current Bitcoin value × 100
A $50,000 loan secured by $100,000 of BTC starts at 50% LTV. If the BTC falls to $80,000 while the debt remains $50,000, LTV becomes 62.5%. If interest adds to the debt, the ratio rises further. Starting at a lower LTV gives more room for a price decline before a call or liquidation threshold.
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Do not confuse LTV with collateral coverage. Coverage reverses the denominator:
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Collateral coverage = current collateral value ÷ debt balance × 100
For example, 150% coverage means $1.50 of collateral for each $1 of debt. That is not “150% LTV”; the equivalent LTV is about 66.7%. Always write the formula next to a percentage before comparing products.
How do maintenance and liquidation thresholds work?
Thresholds are set by the agreement and may use a reference price, an index, or another valuation method. The examples below are contract-specific, not market averages.
| Example | Initial level | Margin-call level | Liquidation level | Stated cure or notice |
|---|---|---|---|---|
| United States Bitcoin and Crypto ETF SEC-filed facility | 150% collateral coverage | 130% coverage or lower | 120% coverage or lower | Additional BTC or partial repayment within 24 hours after a call |
| Fold/Two Prime SEC-filed facility | 250% collateral level | 175% collateral level | 150% collateral level | Lender may direct liquidation below the specified level |
| Lantern product disclosure, updated October 9, 2026 | Maximum 50% LTV | Margin call when its stated rules are met | Possible liquidation if LTV exceeds 75% after the grace period | 72-hour grace period stated on the page |
The first two rows express collateral value relative to debt, while Lantern expresses debt relative to collateral. The numbers cannot be ranked until you convert them to the same formula and read the complete definitions.
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A margin call is a requirement to restore the agreed ratio, usually by depositing more BTC, repaying part of the loan, or both. The trigger may be calculated continuously or at scheduled checks, using a provider’s reference price. An alert can be contractual, informational, or both.
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One SEC-filed agreement gives a 24-hour cure period after a call. Lantern currently states a 72-hour grace period for its product. Those periods illustrate the range; neither is a general standard. A rapidly falling market can move from a call level to a liquidation level before a borrower can transfer funds or complete verification.
Before you borrow, record these call terms
- The exact ratio and whether it is LTV or collateral coverage.
- The price source, timestamp, and update frequency.
- Whether the ratio is checked continuously, hourly, or at another interval.
- Which actions cure the call: more BTC, cash repayment, stablecoin repayment, or a combination.
- When the cure clock starts and whether weekends, outages, or bank delays count.
- Whether the lender may liquidate part of the collateral or the entire position.
Can my Bitcoin be liquidated without warning?
Some agreements permit liquidation with little or no prior notice after a threshold is crossed. The Fold/Two Prime filing says the lender may instruct the custodian to liquidate when collateral falls below the loan-specific liquidation level without prior notice. Other products may provide alerts or a grace period. Only your signed documents determine which rule applies.
Ask how the sale is executed, which exchange or liquidity source supplies the price, whether slippage is charged to you, and whether the lender can sell enough to restore the ratio or may close the whole loan. A notification email is not necessarily a contractual cure right.
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What happens to leftover Bitcoin after liquidation?
The agreement should state the order of payments. BTCBacked says its stated process pays the lender first, deducts a 5% liquidation fee from what remains, and sends residual BTC to the borrower’s refund address. It also says liquidation can occur when LTV reaches 90% or when the loan is unpaid at maturity. Those are that marketplace’s published terms, not a standard sequence.
Confirm whether sale proceeds cover principal, accrued interest, platform charges, network costs, legal expenses, and a liquidation fee before any surplus is returned. Check the refund address procedure and the deadline for disputing a valuation or transaction.
Are Bitcoin-backed loan rates fixed or variable?
A fixed-rate term loan keeps its stated rate for the agreed term, subject to the contract’s refinancing, consolidation, or default provisions. A variable line of credit can change while you borrow. Strike’s published terms describe a fixed APR for its term loans until refinance, consolidation, or closure, and a variable line-of-credit APR recalculated quarterly. They also state that line-of-credit interest accrues on amounts drawn, not on the unused credit limit.
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Those are provider terms, not universal definitions. Ask whether the quoted rate is nominal or effective, whether interest compounds or simply accrues to the balance, how often it is posted, and what event changes the rate.
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What fees should I compare besides interest?
The APR may not include every cost. Compare the complete dollar cost for the period you expect to remain borrowed.
| Cost or term | Why it matters | Published example |
|---|---|---|
| APR and rate type | Determines whether payments are predictable or can rise | Lantern lists a 10% starting BTC APR and an 8% base rate; its page says a 2% upfront fee is included in the stated starting APR |
| Upfront, platform, or origination fee | Reduces proceeds or increases effective cost at the start | Lantern lists a 2% upfront fee; BTCBacked lists a 1.5% platform fee per year of the loan term, charged once |
| Minimum and term | Can make a small or short loan uneconomic | Lantern lists a $1,000 minimum and a 12-month term |
| Early repayment | Determines whether refinancing or paying off early saves money | Lantern states no early principal repayment penalty |
| Liquidation charge | Can materially reduce returned collateral | BTCBacked states a 5% fee on the original loan amount if liquidation occurs under its stated conditions |
| Other operational costs | Network, conversion, late, maturity, or legal charges may apply | Check the written agreement; no universal amount is established |
Lantern’s rates, fees, minimum, and grace period were stated on a page updated October 9, 2026 and may change. Obtain a written offer showing the net cash received, repayment schedule, and total amount due.
How to evaluate a Bitcoin loan before signing
- Calculate the opening ratio. Divide the debt by the provider’s stated collateral value, or convert coverage into LTV so alternatives use the same denominator.
- Stress-test the collateral. Recalculate the ratio after 20%, 30%, and 40% Bitcoin price declines, adding accrued interest and every fee that increases the balance.
- Map the call path. Write down the trigger, price source, monitoring frequency, cure window, accepted deposits or repayments, and the exact liquidation level.
- Verify custody rights. Name the custodian, key holders, segregation method, reuse permissions, insolvency treatment, and release process.
- Price the full term. Include APR, compounding, upfront and recurring charges, conversion or network costs, maturity charges, and the liquidation fee.
- Prepare emergency liquidity. Keep a tested method for transferring collateral or repaying quickly; a bank transfer delay can outlast a cure period.
- Check jurisdiction and eligibility. Confirm that the product, loan currency, identity checks, and collateral rules are available where you live.
- Save the operative documents. Keep the signed agreement, rate sheet, custody terms, and the provider’s liquidation definitions; website summaries can change.
Worked example: why starting LTV matters
Suppose two borrowers each owe $50,000. Borrower A pledges $100,000 of BTC, starting at 50% LTV. Borrower B pledges $200,000, starting at 25% LTV. If Bitcoin falls 40%, A’s collateral is worth $60,000 and LTV rises to 83.3%; B’s is worth $120,000 and LTV rises to 41.7%, before interest and fees. The lower starting ratio provides more room, but it does not eliminate liquidation risk if the decline continues.
What the available evidence does—and does not—show
The published examples provide contract-specific ratios and provider terms, not a representative market-wide Bitcoin lending rate, default rate, liquidation frequency, or borrower-outcome statistic. The 150%/130%/120% coverage schedule, the 250%/175%/150% schedule, and the stated 10% starting APR and 50% maximum LTV are named issuer or provider figures. They should not be presented as industry averages.
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Tax treatment also depends on jurisdiction and individual facts. Borrowing may have different consequences from selling, but no general tax result follows from the loan structure alone; obtain advice applicable to your location.
Quick Recap
Questions to put in writing before borrowing
- Who can move the BTC, and what signatures or instructions are required?
- Can any party reuse or encumber the collateral?
- What happens if the custodian or lender fails?
- Which ratio is used, and what exactly is included in debt?
- What price source triggers a call or liquidation?
- How much time is guaranteed to cure a call?
- Can liquidation occur without notice or in partial amounts?
- How are sale proceeds, fees, and surplus calculated?
- Is the rate fixed, and what causes it to change?
- What is the total dollar repayment if the loan lasts one month, six months, or the full term?
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
