Ethereum-Backed Loans in DeFi: How They Work in 2026
How Ethereum-backed and crypto-backed loans work in DeFi in 2026: over-collateralization, LTV and liquidation, plus JewelSwap's lending across MultiversX, Sui and Radix.
Last updated: 30 July 2026
Ethereum-backed loans have become one of the clearest examples of what decentralized finance actually does: they let you unlock liquidity from crypto you already hold, without selling it. Instead of cashing out your ETH and losing your position, you pledge it as collateral and borrow against it. In 2026 this pattern powers a large share of on-chain credit, and the same model now runs on chains far beyond Ethereum.
This guide explains how ETH-backed loans work, the mechanics you must understand before borrowing, and how JewelSwap brings the same crypto-backed lending model to MultiversX, Sui and Radix.
What are Ethereum-backed loans?
An Ethereum-backed loan is a loan where you deposit ETH (or an ETH-based token) as collateral and receive a different asset in return, usually a stablecoin. You keep ownership of your ETH in the sense that you can reclaim it by repaying the loan plus interest. If you fail to maintain the loan safely, the protocol can sell your collateral to recover what it lent. The term is often used interchangeably with crypto-backed loans, because the same structure works with almost any liquid crypto asset. Our guide to borrowing against crypto without selling covers what each collateral type supports.
The appeal is simple. If you believe your crypto will appreciate, selling it to raise cash means giving up future upside and, in many jurisdictions, triggering a taxable event. Borrowing against it lets you access spending power while staying invested. As Ethereum's own explainer on DeFi puts it, you can use ETH as collateral for a stablecoin loan without credit checks or handing over private information.
Over-collateralization: the foundation
The single most important concept in ETH-backed lending is over-collateralization. In traditional finance, lenders assess your income and credit history before extending unsecured credit. On-chain protocols have no way to chase a borrower who disappears, so they solve the trust problem differently: they require you to deposit collateral worth more than the amount you borrow.
The surplus is a buffer. It absorbs price swings and protects the lenders whose deposits fund your loan. Over-collateralization is what makes permissionless, identity-free borrowing possible. It replaces the credit check with verifiable math enforced by smart contracts.
Loan-to-value (LTV) and borrow limits
The relationship between how much you borrow and how much collateral you posted is expressed as the loan-to-value ratio. A lower LTV means a larger safety buffer; a higher LTV means you are borrowing closer to the maximum the protocol allows.
Every asset has a maximum borrow limit set by the protocol based on how volatile and liquid it is. Highly liquid, established assets typically support higher borrowing capacity, while thinner or more volatile assets support less. Conservative borrowers keep their LTV well below the ceiling so ordinary market moves never push them into danger.
The arithmetic is worth doing explicitly rather than by feel. At 70% LTV against an 80% liquidation threshold, a 12.5% decline is enough to liquidate you. At 40%, you survive a 50% fall. Our dedicated guide to crypto loan LTV works through the full calculation and how to pick a ratio you can live with.
Liquidation: when the buffer runs out
Because crypto prices move constantly, the value of your collateral changes minute to minute. If ETH falls, your LTV rises even though you never touched the loan. When your position crosses the protocol's liquidation threshold, it becomes eligible for liquidation: the protocol sells part or all of your collateral to repay the debt, usually applying a penalty.
Liquidation is not a punishment; it is the mechanism that keeps the system solvent so lenders can always be repaid. But it is costly for the borrower, so avoiding it is the goal. Understanding exactly where your liquidation point sits before you borrow is non-negotiable.
Where the interest comes from: money markets
ETH-backed loans in DeFi are powered by money markets, pooled lending markets where one side supplies assets and the other borrows them. Suppliers deposit into a pool and earn yield; borrowers post collateral and draw from that pool, paying interest. Rates are typically algorithmic, rising as more of the pool is borrowed and falling when it sits idle.
This design is elegant because it is two-sided. The interest a borrower pays is the yield a supplier earns. If you want to lend rather than borrow, the same pools are how you put idle assets to work. We cover that angle in our guide on how to earn yield on stablecoins.
Isolated vs cross lending markets
Modern money markets come in two main structures, and the difference matters for your risk.
Isolated markets ring-fence each asset or pair. Risk from one market cannot cascade into another, which is ideal for newer or more volatile assets and for risk-conscious users. Cross (or global) markets let you collateralize a whole portfolio at once, using several deposited assets together to back your borrowing. This maximizes capital efficiency but demands stronger risk management, because a drop in any one collateral asset affects the entire position.
JewelSwap offers both models. You can read the full mechanics in the JewelSwap money markets documentation, and we break the structures down further in our explainer on isolated and cross lending.
The role of oracles
None of this works without reliable prices. To know your current LTV and whether a position should be liquidated, a protocol needs an accurate, tamper-resistant value for every collateral asset. That job belongs to oracles. JewelSwap draws on multiple sources, including Pyth Network and the community-owned Umbrella Network, with additional safe-price feeds from AshSwap and xExchange. Several independent sources reduce the chance that a single faulty or manipulated feed triggers unfair liquidations.
CeFi vs DeFi: two ways to borrow
You can get a crypto-backed loan through centralized or decentralized finance, and the trade-offs are real.
CeFi lenders are companies that custody your collateral and lend you fiat or stablecoins. They can offer a familiar, support-backed experience and sometimes lower rates, but you must trust the company to hold your assets and stay solvent. 2026 made that concrete: AscendEX, BitMEX and BitMart all announced wind-downs inside a single month, as covered in why crypto exchanges are closing. Those were orderly, but the outcome was a corporate decision rather than a user right.
DeFi lending is non-custodial. Your collateral sits in an audited smart contract, not a company's balance sheet. The rules are transparent and enforced by code, positions are visible on-chain, and no one needs your identity to let you borrow. The trade-off is that you manage your own position and take on smart-contract and market risk rather than counterparty risk. For a comparison across both models, see our roundup of the best crypto lending platforms in 2026.
JewelSwap: the same model, beyond Ethereum
Here is where we are direct with you. JewelSwap does not operate on Ethereum. It is built on MultiversX, Sui and Radix. But the crypto-backed lending model described above is not exclusive to Ethereum, and that is the point. Over-collateralization, LTV, algorithmic interest and liquidation are universal mechanics. JewelSwap implements the same proven model on faster, lower-fee, non-EVM chains.
Concretely, it offers crypto-backed borrowing through two complementary systems:
- Money markets with both isolated and cross lending, so you can borrow against supported assets with the risk structure that fits your strategy, funded by suppliers earning algorithmic yield.
- NFT-collateralized, peer-to-pool lending on MultiversX, where NFTs from verified collections back EGLD loans at up to 50% of the NFT's value, drawn from a shared pool with clear liquidation rules. A 3 EGLD floor supports up to 1.5 EGLD, and a 16-day plan at 4% costs 0.06 EGLD. NFT-collateralized lending is also available on Sui.
For users on MultiversX, Sui or Radix, this means you do not have to bridge to Ethereum and pay its fees to borrow against your holdings. You get the same "don't sell, borrow instead" capability natively, typically with faster settlement and lower transaction costs. It fits alongside other strategies we cover in our guide to crypto passive income.
The risks you must respect
- Liquidation risk. A sharp drop in collateral value can trigger liquidation and a penalty. Conservative LTV and active monitoring are your defence.
- Volatility. Borrowing against a volatile asset amplifies both moves. What looks safe in a calm market can become dangerous overnight.
- Smart-contract risk. DeFi replaces counterparty trust with code trust. Audits reduce risk but never eliminate it.
- Oracle risk. Faulty or manipulated price feeds can cause bad liquidations. Multi-oracle designs mitigate but do not remove this.
- Interest and rate risk. Variable borrow rates can rise, increasing the cost of holding your loan open over time.
None of these should scare you away, but all of them should shape how much you borrow and how closely you watch it. Our guide to crypto risk management covers the discipline in full.
Frequently asked questions
What is an Ethereum-backed loan?
A loan where you pledge ETH or an ETH-based token as collateral and borrow another asset, usually a stablecoin, against it. You reclaim your ETH by repaying the loan plus interest. The same structure applied to any crypto asset is called a crypto-backed loan.
Why do DeFi loans require more collateral than I borrow?
Because on-chain lenders cannot run credit checks or pursue borrowers, they require over-collateralization instead. The surplus protects lenders and absorbs price volatility, which is what makes permissionless, identity-free borrowing possible.
How much can I borrow against ETH?
Major protocols commonly permit maximum LTVs in the 70-80% range for ETH, reflecting its deep liquidity. Borrowing near that ceiling leaves very little room: at 70% against an 80% threshold, a 12.5% decline triggers liquidation.
What triggers a liquidation?
Liquidation happens when your loan-to-value ratio crosses the protocol's threshold, typically because your collateral fell in value. The protocol then sells collateral to repay the debt, usually with a penalty. Keeping a conservative LTV and adding collateral when markets fall helps you avoid it.
Is DeFi borrowing safer than a CeFi crypto loan?
They carry different risks. DeFi is non-custodial and transparent, removing the counterparty risk of trusting a company with your assets, but it adds smart-contract and self-management risk. CeFi feels more familiar but requires trusting a custodian's solvency and conduct.
Does JewelSwap offer Ethereum-backed loans?
No. JewelSwap operates on MultiversX, Sui and Radix, not Ethereum. It offers the same crypto-backed lending model, money markets with isolated and cross lending plus NFT-collateralized peer-to-pool lending, natively on those chains.
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