The key metric is the loan-to-value ratio, or LTV. At 50% LTV, a borrower deposits $10,000 in Bitcoin and receives a $5,000 loan. The collateral would need to fall by half before the loan becomes underwater.
Standard LTV ratios vary by platform and asset. Most CeFi platforms offer 50% LTV for Bitcoin-backed loans. Some go higher — Figure allows up to 75%, while YouHodler pushes as high as 90%. DeFi protocols enforce similar thresholds through smart contracts: Aave allows 50–75% depending on the asset, and MakerDAO requires a minimum 150% collateral ratio.
Higher LTV means more borrowed cash. But it also means a much thinner margin of safety before liquidation.
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How Liquidation Works
Liquidation is the lender's safety valve. When the value of the collateral falls too far, the platform sells enough of it to cover the outstanding debt.
Most platforms operate on a three-tier warning system. Using Strike as an example: the initial LTV caps at 50%, a margin call triggers at 70% LTV to alert the borrower, and automatic liquidation fires at 85% LTV. At that point, Strike sells roughly 57% of the collateral to restore the ratio to a safer level.
In DeFi, liquidation works differently.
Third-party bots monitor the blockchain continuously. When a borrower's position crosses the liquidation threshold, a bot repays part of the debt and receives the collateral at a 5–10% discount. That discount is the incentive for the bot operator.
The Oct. 10, 2025 market crash illustrated liquidation risk at scale. In a single day, $19.16B in positions were liquidated across the market, affecting more than 1.6 million traders. It was the largest liquidation cascade in crypto history.
Borrowers can reduce liquidation risk by keeping their LTV conservative. A 30–40% LTV provides a meaningful buffer. Adding more collateral when prices decline also helps. But the risk never disappears entirely.
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What Borrowers Usually Borrow — and What They Pledge
The most commonly borrowed assets are stablecoins. USDC leads, followed by USDT and DAI. Stablecoins settle near-instantly on-chain, maintain a 1:1 USD peg, and require no banking rails to move around.
CeFi platforms like Nexo support fiat disbursements in more than 40 currencies.
DeFi is almost exclusively crypto-to-crypto, with stablecoins serving as the fiat substitute.
On the collateral side, Bitcoin gets the best terms everywhere. It carries the lowest volatility among major crypto assets, the deepest liquidity, and the longest track record. ETH is the second most accepted collateral, though it typically receives slightly lower LTV limits — Arch Lending, for instance, offers 60% LTV for BTC but only 55% for ETH.
Solana (SOL) has gained acceptance more recently. Arch offers 45% LTV for SOL-backed loans. Some platforms accept 50 or more assets as collateral, though terms get progressively less favorable for smaller tokens.
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When Borrowing Makes More Sense Than Selling
The primary reason holders borrow against their crypto instead of selling it is tax efficiency. In the United States and most jurisdictions, taking a crypto-backed loan is not a taxable event.
Selling, by contrast, triggers capital gains tax immediately. The IRS treats cryptocurrency as property. When a holder sells at a profit, the gain is taxed at 15–20% for assets held longer than a year.
Consider this scenario. An investor bought 1 BTC at $100,000, and the price has risen to $170,000. Selling generates a $70,000 capital gain and a tax bill of $10,500 to $14,000.
Borrowing at 50% LTV against that same Bitcoin yields $85,000 in cash. The annual interest cost at roughly 10% APR is about $8,500. No capital gains tax applies, and the borrower still owns the Bitcoin.
If Bitcoin doubles during the loan period, the borrower captures the full upside. A seller would have missed it entirely.
Beyond tax considerations, crypto loans serve practical purposes.
Some borrowers use them to fund down payments on homes. Milo offers dedicated crypto-backed mortgages up to $5M. Others cover business expenses or consolidate higher-interest debt.
One critical caveat applies. If a borrower's collateral gets liquidated, that event is treated as a taxable disposal. The tax advantage holds only as long as the loan remains healthy.
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Six Risks Every Beginner Should Know
The risks of crypto loans extend well beyond price volatility. Here are the six main categories, ranked by how directly they affect the average borrower.
Liquidation risk sits at the top. A sudden market drop can wipe out collateral before the borrower has time to respond. The Oct. 2025 crash demonstrated this in brutal fashion, but smaller liquidation events happen regularly during routine corrections.
Counterparty risk applies only to CeFi.
When a centralized lender goes bankrupt, borrowers may lose their collateral entirely.
Celsius owed users $4.7B when it filed in Jul. 2022. Its founder, Alex Mashinsky, was sentenced to 12 years in prison for fraud in May 2025. BlockFi collapsed after Alameda Research defaulted on a $680M loan. Genesis had $2.4B in exposure to Three Arrows Capital.
Smart contract risk is the DeFi equivalent. If the code running a lending protocol contains a vulnerability, hackers can drain the funds. Total crypto losses from hacks reached $2.17B by mid-Jul. 2025 alone. The largest single DeFi lending exploit hit Euler Finance for $197M in Mar. 2023.
Interest rate variability surprises many DeFi borrowers.
Aave uses a two-slope model where rates stay low when pool utilization is moderate but spike dramatically above the "kink point." A borrower paying 5% in the morning could face 50% or more by evening if utilization surges.
Stablecoin depegging risk was demonstrated catastrophically by the UST/LUNA collapse in May 2022, which erased $40–60B in market value. If a stablecoin used as the loan denomination or collateral loses its peg, positions can become instantly undercollateralized.
Finally, crypto deposits carry zero government insurance. The FDIC insures traditional bank deposits up to $250,000. Crypto assets receive no such protection. The FTC charged Voyager Digital for falsely claiming FDIC coverage on its crypto products.
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The Market in 2025–2026: Record Highs and New Rules
The crypto lending market completed a dramatic recovery arc over the past two years. From a bear-market low of $14.2B in Q3 2023, total lending surged to $36.5B by Q4 2024 and then to $73.6B by Q3 2025. That surpassed the prior all-time high of $69.4B from Q4 2021.
DeFi lending grew 959% from its 2022 bottom of $1.8B. The sector is projected to grow at a 22.6% compound annual rate through 2033.
Regulatory clarity accelerated through 2025. The GENIUS Act, signed on Jul. 18, 2025, became the first major federal crypto legislation in the United States. It established a framework for payment stablecoins, requiring 1:1 reserve backing, monthly public disclosures, and a prohibition on rehypothecation of reserves.
In Europe, the Markets in Crypto-Assets regulation, or MiCA, became fully applicable on Dec. 30, 2024. It requires authorization for crypto-asset service providers and mandates asset segregation across all 27 EU member states.
Institutional adoption deepened as well.
Aave launched Aave Horizon in Aug. 2025, a permissioned institutional market for tokenized real-world assets. Partners include VanEck, WisdomTree, and Franklin Templeton. World Liberty Financial deposited more than $50M into Aave.
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Flash Loans: A DeFi-Only Concept Worth Understanding
Flash loans deserve a brief mention because they represent something that exists nowhere else in finance. These are uncollateralized loans that must be borrowed and repaid within a single blockchain transaction.
On Ethereum, that means roughly 12 seconds. If the borrower cannot repay within that window, the entire transaction reverts automatically, as if it never happened.
No collateral is needed. No credit check. The amounts can be enormous — limited only by the liquidity in the pool.
Legitimate uses include arbitrage between exchanges, collateral swaps within lending positions, and self-liquidation to avoid penalties. Aave processed $7.5B in flash loan volume during 2025.
The risk is on the protocol side. Flash loans have been used to manipulate prices and drain funds from vulnerable smart contracts. Cumulative flash loan exploits have exceeded $500M since 2020. Established protocols have built defenses against these attacks, but newer forks remain exposed.
Beginners should understand flash loans exist but are unlikely to use them directly. They require custom smart contract code and operate in the domain of developers and professional arbitrageurs.
Also Read: UK Caps Overseas Political Donations, Bans Crypto Contributions In New Bill
Conclusion
The crypto lending market has rebuilt itself from the wreckage of 2022 into a $73.6B ecosystem. DeFi now handles two-thirds of all activity, with Aave alone crossing $1 trillion in cumulative volume. CeFi has consolidated into a handful of surviving firms that operate more transparently than their predecessors — but remain concentrated.
For beginners, the value proposition is straightforward.
Crypto loans offer access to cash without selling, without triggering taxes, and without giving up exposure to future gains. The mechanics are not complicated.
But the risks are real. Liquidation cascades can wipe out positions in minutes. CeFi lenders can go bankrupt. Smart contracts can be exploited. There is no FDIC insurance, no government backstop, and no customer protection hotline. The margin of safety depends entirely on conservative LTV ratios, careful platform selection, and the recognition that in this market, the borrower bears the full weight of the risk.
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