Learn how Bitcoin-backed loans work, from depositing BTC as collateral to borrowing stablecoins. Understand LTV ratios, liquidation, and how Borrow by Sats Terminal simplifies the entire process.
A Bitcoin-backed loan lets you borrow money (typically stablecoins like USDC or USDT) by depositing your Bitcoin as collateral. You keep ownership of your BTC throughout the loan. When you repay the borrowed amount plus interest, you get your Bitcoin back in full.
Think of it like a pawnshop, but for digital assets: you hand over something valuable, receive cash, and retrieve your item when you repay. The key difference is that in DeFi, no pawnbroker is involved. Smart contracts handle everything automatically, transparently, and around the clock.
This guide explains the mechanics of Bitcoin-backed loans step by step, covering collateral, loan-to-value ratios, liquidation, interest rates, and how Borrow by Sats Terminal makes the entire process simple.
Before diving into the mechanics, it is worth understanding why someone would borrow against their Bitcoin rather than simply selling it.
If you sell Bitcoin at $80,000 and it rises to $120,000, you have missed out on $40,000 per coin in gains. By borrowing against your BTC instead, you access liquidity now while retaining full exposure to future price appreciation. When Bitcoin's price goes up, so does the value of your collateral.
In many jurisdictions, selling cryptocurrency is a taxable event that triggers capital gains tax. Borrowing against your crypto is generally not considered a sale and therefore may not trigger a tax event. This can make borrowing significantly more tax-efficient than selling. However, tax laws vary by jurisdiction and change frequently, so consult a tax professional.
Many Bitcoin holders have a long-term investment thesis, they believe Bitcoin's value will increase substantially over years or decades. Selling to cover short-term expenses works against this strategy. Borrowing lets you access liquidity for short-term needs while staying aligned with your long-term position.
Traditional loans require credit history, income verification, and approval processes. Bitcoin-backed loans require only sufficient collateral. Your credit score, employment status, and income are irrelevant. This opens borrowing to anyone who holds Bitcoin.
Here is exactly how a Bitcoin-backed loan works, from start to finish.
The first decision is where to borrow. You can interact directly with DeFi protocols like Aave v3 or Morpho Blue, or you can use an aggregator like Borrow by Sats Terminal that compares rates across protocols and chains for you.
Borrow by Sats Terminal supports lending markets on Ethereum, BASE, Arbitrum, Polygon, Optimism, and BSC, showing the best available rate for your desired loan in a single view. Behind that single view, Borrow is comparing live quotes from Aave v3, Morpho Blue, and a curated set of CeFi lenders across all six chains. Once you accept an offer, the rest of the loan unfolds in five steps with one set of pre-approvals: BTC deposit, automatic bridging, wrapping into the form the lender requires (wBTC, cbBTC, or BTCB), supply, and USDC delivery.
You deposit your Bitcoin (in a tokenized form, more on this below) into the lending protocol's smart contract. This collateral secures your loan. The amount you can borrow depends on the loan-to-value ratio (LTV).
Based on your collateral value and the protocol's LTV ratio, you can borrow up to a maximum amount in stablecoins. For example:
Most experienced borrowers borrow well below the maximum to maintain a safety buffer. A common practice is to borrow at 40-50% LTV, giving significant room for Bitcoin price drops before liquidation becomes a risk.
The borrowed stablecoins are sent directly to your wallet. You can use them for anything: pay bills, make purchases, invest in other assets, or simply hold them. The stablecoins are yours to use as you see fit.
While your loan is active, you need to watch your collateral ratio. If Bitcoin's price drops, the value of your collateral decreases relative to your loan, pushing your LTV higher. If it exceeds the liquidation threshold, you face liquidation.
Borrow by Sats Terminal and most lending protocols display your health factor or current LTV clearly so you always know where you stand.
When you are ready, you repay the borrowed stablecoins plus accrued interest. Once the debt is cleared, your full Bitcoin collateral is unlocked and returned to your wallet. There is no fixed repayment schedule in most DeFi protocols. You can repay whenever you want, whether that is in a day, a month, or a year.
The loan-to-value ratio is the single most important concept in Bitcoin-backed lending. It determines how much you can borrow and when you might face liquidation.
LTV is calculated as:
LTV = (Loan Value / Collateral Value) x 100%
For example:
Lending protocols define several important LTV levels:
Your LTV changes whenever Bitcoin's price moves:
If Bitcoin's price goes up: Your collateral is worth more, your LTV decreases, and you are safer. You could even borrow more if you wanted.
If Bitcoin's price goes down: Your collateral is worth less, your LTV increases, and you get closer to liquidation.
Here is a practical example:
| Scenario | BTC Price | Collateral Value | Loan Value | LTV |
|---|---|---|---|---|
| Start | $80,000 | $80,000 | $40,000 | 50% |
| BTC rises 25% | $100,000 | $100,000 | $40,000 | 40% |
| BTC drops 25% | $60,000 | $60,000 | $40,000 | 67% |
| BTC drops 40% | $48,000 | $48,000 | $40,000 | 83% |
In the last scenario, the LTV of 83% would likely exceed the liquidation threshold, putting the position at risk.
Liquidation is the process that protects lenders when a borrower's collateral value drops too low. Understanding it is essential for managing your risk.
When your LTV exceeds the liquidation threshold:
Most DeFi protocols perform partial liquidations. They sell only enough collateral to bring your position back to a safe LTV. You do not necessarily lose all your collateral. However, in extreme market conditions (very rapid price drops), full liquidation is possible.
A technical but important detail: most DeFi lending protocols run on Ethereum Virtual Machine (EVM) compatible blockchains, not on the Bitcoin blockchain itself. To use Bitcoin in these protocols, it needs to be "wrapped" or tokenized.
All of these are supported as collateral on Borrow by Sats Terminal, giving you flexibility to use whichever form of tokenized Bitcoin you already hold or can most easily acquire.
The process varies by provider, but the general concept is:
Understanding how interest works helps you plan your borrowing costs.
In DeFi, borrowing rates are determined algorithmically based on pool utilization. When lots of people are borrowing stablecoins and the pool is heavily utilized, rates go up. When there is excess supply and low demand, rates go down. Rates can change continuously.
Bitcoin-backed stablecoin borrowing rates in DeFi typically range from 1% to 10% APR (annual percentage rate), though they can spike higher during periods of extreme demand. Factors that influence rates include:
Because rates differ across protocols and chains, comparing before you borrow can save significant money. A 2% difference in APR on a $100,000 loan equals $2,000 per year.
Borrow by Sats Terminal displays current rates from Aave v3, Morpho Blue, and CeFi options across all supported chains, sorted from lowest to highest. This makes it easy to find the cheapest option for your specific loan parameters.
Unlike traditional loans, most DeFi Bitcoin-backed loans have no fixed term. Interest accrues continuously, and you can repay whenever you choose. There are no monthly payments, no late fees, and no prepayment penalties. You simply repay the principal plus accumulated interest when you are ready.
Bitcoin-backed loans are available through both decentralized protocols and centralized companies. Each has trade-offs.
Borrow by Sats Terminal shows both DeFi and CeFi options, letting you compare across categories and choose what works best for your situation.
Let us walk through a realistic Bitcoin-backed loan scenario.
Setup: Alice holds 1 BTC currently worth $85,000. She needs $30,000 for a home renovation but does not want to sell her Bitcoin.
Step 1: Alice visits Borrow by Sats Terminal. She sees that Morpho Blue on BASE offers the best rate for her loan: 3.2% APR for borrowing USDC against cbBTC.
Step 2: Alice deposits 1 cbBTC ($85,000) as collateral and borrows $30,000 USDC. Her LTV is 35.3% ($30,000 / $85,000), well below the 80% maximum.
Step 3: Alice uses the $30,000 USDC for her renovation. Her Bitcoin remains locked as collateral but she retains ownership.
Monitoring: Over the next 6 months, Bitcoin's price fluctuates between $70,000 and $110,000. Even at the lowest point ($70,000), Alice's LTV would be $30,000 / $70,000 = 42.9%, still well below the liquidation threshold. Her conservative borrowing gives her peace of mind.
Repayment: After 6 months, Alice repays her loan. Interest accrued: $30,000 x 3.2% x 0.5 years = $480. She repays $30,480 in USDC and her full 1 cbBTC is returned. During this period, Bitcoin rose to $95,000, so her BTC appreciated by $10,000 while she also had use of the $30,000 loan.
Net result: Alice accessed $30,000 in liquidity for $480 in interest costs, kept her Bitcoin exposure, and benefited from BTC appreciation. If she had sold 0.35 BTC instead ($30,000 / $85,000), she would have missed out on $3,529 in appreciation on those coins ($10,000 price increase x 0.35 BTC).
For someone new to Bitcoin-backed loans, the process described above might sound complex. That is exactly the problem Borrow by Sats Terminal solves.
Borrow by Sats Terminal is designed for Bitcoin holders who want to:
One detail worth keeping in mind: Borrow itself never takes custody of your BTC. Collateral is held in your own Privy wallet across BASE, Ethereum, Arbitrum, Polygon, Optimism, and BSC, and every bridging, wrapping, and supply step is executed only after your explicit approval - the platform cannot move funds without it.
Bitcoin-backed loans allow you to deposit Bitcoin as collateral and borrow stablecoins without selling your BTC. The amount you can borrow is determined by the loan-to-value ratio, and maintaining a healthy LTV is essential to avoiding liquidation. Tokenized forms of Bitcoin (wBTC, cbBTC, BTCB) enable BTC to be used on EVM-compatible DeFi protocols like Aave v3 and Morpho Blue. Interest rates are variable and differ across protocols and chains, making comparison important. Borrow by Sats Terminal aggregates all of these options into a single, self-custodial, no-KYC platform purpose-built for Bitcoin holders who want to borrow against their BTC at the best available rates.
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Common Questions
Yes, if your collateral ratio drops below the liquidation threshold and you do not add more collateral or repay part of your loan, your Bitcoin will be partially or fully liquidated (sold) to cover your debt. However, this risk is manageable. By maintaining a healthy collateral ratio and monitoring your position, you significantly reduce the chance of liquidation.
