Why Lending Protocols in DeFi are Better than Any Centralized Financial Service

by MadFish Team
4 min read
Lending protocol vs. Traditional financial services

Decentralized lending platforms possess at least 2 advantages for users: you can make financial operations with no intermediary and gain profit on the interest on the supplied asset. These platforms are the most popular DeFi protocols: according to the DeFi Pulse, there are $32.64 billion locked in 3 major lending protocols only (namely, Maker, Aave, and Compound) by May 2021.

We’ll explain why lending protocols in DeFi attract so much attention and how they innovate the similar mechanisms of traditional financial platforms.

DeFi vs. Traditional Centralized Financial Services
DeFi vs. Traditional Centralized Financial Services

Traditional financial services vs. DeFi

Imagine you enter the bank and want to get a loan. Remember what happens? You’ll be asked to show your passport, sign several papers, and agree on the terms and conditions offered. But DeFi lets you lend and borrow directly, with no need to involve any third party and reveal your identity. Since all the balance verifications and transactions happen in smart contracts, nobody will ask your personal data for keeping or giving you money.

Though promising stability and reliability for their services, traditional banks possess serious risks for lenders. In the system, when you deposit money to a bank, it uses your funds for its own purposes. As the experience of financial crises in the banking sector shows, such activity can become the reason for bankruptcy and severe money loss. In the traditional financial world, people try to avoid these risks by referring to alternative lending marketplaces. But even if you enter a lending company, there’s no guarantee you’ll get a loan without providing personal information and showing reliable credit history. In any case, all the operations require relying on a third party and revealing your identity.

Main problems of referring to a bank

  • Risk of bankruptcy and general mistrust to the system 
  • Strict regulations and specific criteria you should follow
  • Need to verify your identity to employ the services
  • Need to explain where did you get your money from 
  • Instruments of control (investigations, blocking accounts, etc.)
  • Putting personal data at risk of theft 

DeFi works under completely different rules. The space is fully anonymous, so it grants access to the wider public to lend and borrow. You can participate in these financial operations from any location, notwithstanding the credit score and without the need to go public about the income source. All the assets are locked in smart contracts. You use them as the collateral (the borrower’s deposit in the protocol) to start borrowing. Alternatively, you can earn interest on the deposit. 

DeFi protocols have no intermediary, in contrast to traditional financial services. The smart contracts make borrowing and lending easy, fast, and fully anonymous.  

4 Key Advantages of Lending Protocols in DeFi
4 Key Advantages of Lending Protocols

Key advantages of lending protocols in DeFi

  • Total control over your funds. You can access your assets any time and do whatever you want without asking permission and experiencing risks related to transferring your funds to a custodian.
  • Transparent and borderless system. Anyone can start interacting with a lending protocol: there’s no need to show your passport as there is no central authority. You can be anywhere in the world to start lending and borrowing. 
  • Automation of processes. All the transactions are processed in smart contracts. The code prescribes all the terms and conditions for lending and borrowing.
  • Profitable asset allocation. You can increase the profitability of your portfolio by generating income from both the borrowed and the deposited asset. 

Lending protocols in DeFi have their risks. Among all, you should check the safety of smart contracts. Another problem is the volatility of APR (Annual Percentage Rate). Since this indicator depends on the ratio between lent and borrowed funds, it can change really fast. The safety problem is a common concern in DeFi, that’s why it’s highly recommended to keep an eye on your private keys and projects you’re participating in. Conduct extensive research on audits made and tracking APR dynamics before entering the lending protocol.

3 Most Popular Use Cases of Lending Protocols

1. Payday loan. You have cryptocurrency you don’t want to sell too early (because you believe its price will go up in the future), but you need money now. In this case, you can deposit this asset on the lending protocol, get a loan in a stablecoin, and sell it for cash. On the appointed day, you pay back the loan and unlock your deposit.

2. Short-term trading. If you predict the price of a cryptocurrency you own will rise, you can deposit it to get stablecoins and buy even more of this cryptocurrency. When the price increase happens, you can repay your loan and still profit from the price increase.

3. Deposit. On the lending protocol, you can supply your tokens without taking a loan and get an interest much higher than in a bank.

You can use lending protocols in DeFi for other purposes than these three. It all depends on your investment strategy and aims.

How DeFi protocols work under the hood

How DeFi protocols work under the hood

Traditional banks ask your identity and use your loan for their own benefit. You’ll never know the details and track the possible problems. In their turn, lending protocols take your crypto as collateral and lock it in the smart contract. The process remains anonymous and transparent: you can access your assets anytime.

Basic Principles

Since the set of smart contracts creates pools of locked funds, protocols make a market of loanable funds where you can interact with multiple borrowers and lenders directly. There is no dependence on the profitability and directives from any central authority. On the lending platform, you interact with the set of smart contracts instead.

In DeFi protocols, the interest rates depend on the dynamic of the supply and demand for the funds. Again, there is no central bank to announce and change the rates. The rules are set programmatically:

1. Since there are more lenders than borrowers on the lending protocol, the interest rate for borrowing is higher.

2. The amount of assets available for borrowing depends on the quality of the supplied token as collateral and the total fund pool available. 

3. The difference between supply and demand determines the liquidity for loanable funds: the higher it is, the lower the borrowing rates.

4. Lenders receive payments from interest paid back by borrowers.

5. The data on prices and APY is updated automatically with the changes in supply-demand dynamics. 


It may happen that the crypto token you’ve placed as collateral loses its value. Another example is when the borrowed asset increases in value dramatically. In both cases, the lending protocol will start the process of liquidation for the same reason: the collateral vs. loan value dramatically changes and your collateral doesn’t cover your loan any more.

To cover the process, the liquidator appears. This actor will repay up to 50% of a borrower’s debt and claim the liquidation fee (the amount of which depends on the specific asset).   

System participants

You can interact with the lending protocol as a lender or a borrower. You can become a liquidator too, but it’s a highly competitive space usually. The motivation for each participant is different: the lender receives the interest, the borrower receives extra crypto, and the liquidator gets the liquidation bonus when the liquidation process takes place.

Protection mechanisms

In the lending protocol, you deal with overcollateralized loans. This way, the system mitigates the lender’s risks and validates the borrower’s creditworthiness in the circumstances when nobody reveals the identity or has any credit score. The percentage of overcollaterization differs from platform to platform.

However, the volatility of the cryptomarket still possesses a high risk of possible liquidation. To protect yourself from this, it’s recommended to deposit more than borrowed (in addition to the overcollateralization requested by the platform). Alternatively, you can partially repay the loan. This way, the price volatility won’t affect your loan that much. 

Takeaway notes

Lending protocols in DeFi establish a transparent system that satisfies the needs of all the platform participants. As a borrower, you can get access to more funds, increase your income, and pay back the loan later from the profits generated. As a lender, you can get an opportunity to withdraw your funds anytime without asking permission and earn interest on deposits.

But remember: to get all the advantages of the lending protocols in DeFi, you should possess financial knowledge and adopt a smart investment approach.

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