DeFi Lending Explained: What Are DeFi Loans?

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DeFi lending is a novel financial service that has exploded onto the scene largely due to its attractive rates and innovative products. DeFi lending platforms help anyone borrow or lend funds, and crypto holders can earn passive income. All this without having to pass all the time-consuming checks required in traditional finance.



Blockchain technology has opened the gate to a new decentralized world ━ the world of DeFi.

We explain what DeFi is, how DeFi loans work, and how it improves traditional financial systems. First, let’s take a quick look at how traditional finance markets work.



How does traditional finance work?

The traditional financial system refers to institutions, banks, investment brokers, and all the other entities engaged in the fiat financial ecosystem. The main purpose of the financial system is to intermediate and facilitate the flow of money throughout society.

The financial system moves money around and supports investors by supplying them with funds put in by others. A large part of investments, if not all, require businesses to cooperate with actors from the traditional financial system to evolve. When it comes to financing, large and small businesses often require loans from a bank, and this process takes time and might not always be successful.

The traditional financial system is commonly broken down into three main areas:

  • Public finance: All systems and services that concern the government
  • Corporate finance: The managing of assets and revenue of a business
  • Personal finance: All financial decisions of an individual

As the traditional financial system evolved together with our society, it faces many issues, some of these being negative interest rates and inflation.

Negative interest

When borrowing money from a bank, people are charged interest on the loan. This interest rate is the effective cost of borrowing.

But in times when consumers hold money instead of spending it, the economy faces a decline in demand and prices plummet. This is called deflation, and it is a sign of a weakened economy.

To balance the effects of deflation. Central banks need to stimulate credit and money lending. An unusual method is that they offer a negative interest and pay borrowers to take a loan to encourage investment and recover the economy from the recession.

Unlimited money printing

Until 1971, the U.S. dollar was backed by gold. Paper money had a value backed by gold, and anyone could exchange it for an equivalent amount of gold. But that is not the case anymore.

With that, fiat currency was no longer backed by anything other than the word of the government. It is used as a convention, but there is nothing stopping governments from printing more money. If only the amount of money increases, but all else remains the same, then people will have more money chasing the same goods, which will drive prices up, causing inflation.

Central banks need to carefully tackle both inflation and deflation to ensure that the global economy works properly. The two might not always be properly addressed, as the central entities responsible might face external pressures to incline the balance.

The shortcomings of the traditional financial system are partly solved by the emerging DeFi industry and decentralized economies in general.

What is DeFi?

DeFi stands for decentralized finance, and it was first introduced by the Ethereum network, thanks to the network’s smart contract features. The DeFi ecosystem allows users to benefit from financial operations without intermediaries or any third party, as in the case of banks in the traditional financial sector.

In DeFi, the network can have virtually countless decentralized applications (DApps) that can perform operations, and it enables users to manage their digital assets, regardless of their location or status. All of these are possible due to blockchain technology and its permissionless network, which is transparent and open-source.

Smart contracts enable this digital decentralized financial sector to perform similar to the traditional services — but without the need of the middle man. A smart contract is a special computer program deployed on the blockchain that is triggered only when the embedded predefined conditions are met.

Many DeFi applications are deployed on the Ethereum blockchain. Other networks that allow smart contracts and can be considered an alternative to Ethereum are Cardano, EOS, Solana, but there are more.

What is DeFi lending?

DeFi lending, or decentralized finance lending, is similar to the traditional lending service offered by banks, except that it is offered by peer-to-peer decentralized applications (DApps).

In traditional finance, people set up a savings account and deposit fiat to receive interest on their deposit. But for DeFi, crypto investors can lock their funds or use them to provide liquidity to liquidity pools and receive interest.

Furthermore, with crypto trading, no central entity exists to ensure sufficient liquidity of both pairs being traded. Decentralized platforms rely on and incentivize crypto investors to use their funds to provide that liquidity.

The DeFi lending market has risen substantially since 2020. The Total Value Locked (TVL) in DeFi protocols is over $80 billion, increasing more than 20-fold in the last year.

Notably, DeFi rates are much greater than those offered in the traditional financial space, making DeFi lending a much better option for earning passive income.

DeFi lending vs. traditional lending

The traditional financial system offers services such as lending, borrowing, spot trading, and margin trading. The DeFi ecosystem has adapted and can offer the same services and financial products as traditional systems.

One of the main differences between traditional lending and DeFi is that traditional banking requires time-consuming and onerous checks on a customer’s status. On the other hand, with DeFi, a loan is granted much quicker, so long as the individual meets the collateral requirements. Smart contracts take care of much of the review process, making it easier for both the lender and borrower.

DeFi loans also typically offer much better returns when compared to traditional lending markets — and even equity. While the specific rate varies greatly, loans can often be 10% or higher than other assets. This is one of the key reasons why DeFi’s popularity exploded in 2020.

How does DeFi lending work?

DeFi lending is fairly straightforward. The borrower has to make a deposit on a DeFi lending platform via a smart contract associated with a particular currency, and it must match the loan amount. This deposit is called collateral, and it can take the form of a wide variety of cryptocurrencies.

The good news is that anyone can be a lender. There are many ways to lend crypto funds, and it is worth researching all options, as some may generate more passive income than others.

Borrowers should also research the different lending pools and choose the best one for their specific needs.
Let’s say a borrower wants a DeFi loan of one bitcoin. The borrower has to deposit the equivalent value of one bitcoin in another cryptocurrency.

An issue that may arise is the fluctuating crypto prices, and the value of the collateral drops below the price of the DeFi loan. That’s why some DeFi lending platforms, such as MarketDAO, require a minimum deposit for the collateral of 150% to 200% for the DeFi loan.

If the value of the collateral drops below the price of the loan, it is subject to a liquidation penalty.

Advantages of DeFi lending

DeFi loans have multiple advantages for all parties involved, when compared to the traditional system.

Lending consistency

DeFi loans are granted on a consistent basis. All DeFi rates and rules are clearly stated, leaving little room for human error.


Blockchain is a public ledger that can provide on-demand records of all DeFi loans and the rules and policies that granted that loan. The public distributed ledger serves as proof of all financial transactions when a DeFi loan is granted.


DeFi loans are quickly processed, and the lent amount is available immediately if the loan is approved. The fast processing is a result of DeFi lending platforms being powered by cloud services, which help identify any attempt at fraud, as well as other risks.

Lending analytics

Having a completely digital process for lending helps monitor and assess the lending and borrowing market. These lending analytics can be useful for those looking to optimize their funds. It also helps DeFi lending platforms gain insights such as loan sources, which can further help them improve loan performance.

Transparency and immutability

A blockchain is a public distributed ledger that can be easily verified by any user of the network. Transparency allows data analysis, and the decentralized nature of the blockchain ensures that all transactions are legitimate.

Disadvantages of DeFi lending

As a crypto holder, you should know there are a few different types of risks if you want to participate in DeFi lending.

Impermanent loss

Crypto lenders that participate in a liquidity pool can earn passive income for lending their cryptocurrency, but they are also at the risk of impermanent loss.

Impermanent loss happens when the price of the crypto locked in a liquidity pool changes. Commonly, this event takes place when there is an uneven token ratio in the liquidity pool. Impermanent loss isn’t realized until the funds are withdrawn from the liquidity pool.

Liquidity providers (LPs) are protected by the impermanent loss and receive rewards from the trading fees to offset the loss. For instance, Uniswap has a 0.3% trading fee that is distributed to LPs.

The best way to avoid or at least minimize impermanent loss is to provide liquidity to liquidity pools that have stablecoins. These are less volatile and have a much smaller chance of price change.

DeFi rug pulls

Unlike traditional lending platforms, DeFi still lacks the required regulations that would protect users from bad actors.
Crypto traders have to trust the DeFi lending platform, and it can so happen that users misplace their trust.

A DeFi rug pull is a crypto scam in which the DeFi developers create a new token and suddenly abandon the project, after obtaining funds from early investors. Rug pulls often occur with tokens on DEXs such as PancakeSwap or Uniswap because they allow anyone to list tokens without any audit.

Flash loan attacks

Flash loans are unique to the DeFi space, and it represents a type of loan that doesn’t require any collateral. Because blockchain transactions can actually include multiple transactions, the flash loan allows a user to execute multiple actions. This includes borrowing cryptocurrency, executing value transfers and smart contracts with that loan, and repaying the initial loan at the end.

If the loan isn’t repaid, the lender can roll back the transaction. As it is a decentralized process, there is no credit score to prevent anyone from accessing a DeFi flash loan.

Top 5 DeFi lending platforms

1. Aave

Aave is one of the most popular DeFi lending platforms. It was launched in 2020, and it is an open-source and non-custodial liquidity protocol.

Aave allows users to deposit crypto in a liquidity pool, and they receive an equivalent amount of aTokens. The protocol has an embedded algorithm that adjusts the interest rate, according to the current supply and demand in a given liquidity pool. When more users hold aTokens, the interest rate increases.

The AAVE governance token is used to incentivize holders to safely manage and develop the platform.

Aave offers some of the best yields on the DeFi lending market, and each liquidity pool offers a different interest for lenders. For the most recent rates, users should check the current rates directly on the platform. Users can choose between a stable or a variable interest rate.

In October 2021, the Total Value Locked (TVL) for Aave is $12.26 billion.

2. Compound

Compound is an autonomous interest rate protocol that is used for open financial applications. Users can deposit cryptocurrencies, earn a passive income through interest and borrow crypto.

The protocol’s governance token COMP grants holders the right to vote on decisions like adding new assets and technical upgrades to the platform.

All crypto lenders get a cToken according to the amount they supplied to the liquidity pool. A cToken is specific to the digital assets provided in the liquidity pool. For instance, if you deposit ETH, the token received is cETH. Each of these tokens will earn an interest based on their respective interest rates of the liquidity pool.

The top 3 markets on Compound are ETH, USDC, and DAI. Compound has a TVL of $10.9 billion.

3. MakerDAO

MarkerDAO is a DeFi lending platform that offers only DAI tokens for borrowing. DAI is a stablecoin, and it’s pegged to the U.S. dollar. MakerDAO is an open vault that can be used by anyone to borrow DAI while providing collateral like ETH or BAT.

Users are encouraged to take part in operational earnings through governance fees, which are the interest rates for the network.

On MarkerDAO, users can borrow DAI up to 66% of the value of the collateral. If the deposit’s value falls below the fixed rate, a 13% penalty will occur, to recuperate the loss. The liquidated collateral is sold in an open market, at a 3% discount.

Marker’s native token is MKR, which is minted when the collateral value starts to drop. It is sold on the open market to raise more collateral, which simultaneously dilutes the existing MKR.

MarkerDAO can be used on Marker’s Oasis Portal.

4. Uniswap

Uniswap is a decentralized crypto exchange built on the Ethereum network. The big advantage of this DEX platform is that users totally control their funds through the exchange smart contract, and new coins can be easily listed on the exchange, through the factory smart contract.

Users can swap ERC-20 tokens using Uniswap or earn an interest rate by providing liquidity for token swaps. Users can easily create a new liquidity pool, and the minimum requirement is to provide a token pair for markets. The market makers set the exchange rate.

The top 3 pools on Uniswap are USDC/ETH, WBTC/ETH, and ETH/USD. Uniswap had a TVL of $4.8 billion.

5. is a DeFi aggregator platform that allows users to lend, borrow, and enable yield farming. The platform operates on the Ethereum network. Users earn YFI tokens by locking up their assets. is a popular protocol due to its capability to automatically switch between lending platforms. The platform has several independent products:

  • APY: The interest rates across different lending protocols
  • Earn: Helps users identify the highest interest rate they can earn by lending an asset
  • Vaults: Investment strategies that will generate the highest returns
  • Zap: Bundles more trades in one click, to save labor and costs had a TVL of $5.3 billion.

DeFi lending: the financial revolution

DeFi lending is an ecosystem moving full steam ahead with development, but crypto holders have already shown great interest in all crypto financial services, in addition to lending and borrowing. These platforms are gaining more trust than ever and help pave the way to a world of more decentralized financial services.


This article is not intended as financial advice. It serves an educational purpose only. As always, we strongly advise you to do your own research before engaging in any crypto activity.

Frequently asked questions

What are the risks of DeFi lending?

DeFi lending is largely safe. However, due to the market’s volatility, the lender might suffer losses when the loan isn’t paid back on time. Impermanent loss is another risk that is associated with providing funds to liquidity pools.

What are DeFi lending protocols?

DeFi lending protocols or DeFi lending platforms, allow users to get a DeFi loan. The loan can be in any of the available cryptocurrencies on the platform. Bear in mind that the borrower must deposit a collateral, which is usually around 150% to 200% of the loan value.

How do I get a loan from DeFi?

Anyone can get a DeFi loan, using a DeFi lending platform such as Aave or Compound. The borrower will need to deposit a collateral, which is another cryptocurrency, to get a DeFi loan.


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Iulia Vasile is a freelance content writer and social media expert. Iulia currently contributes to numerous crypto and blockchain-related websites, bringing her years of expertise and unique personal perspective to the discussion concerning blockchain tech. A computer engineer graduate, Iulia is also the owner of the travel website, an original member of the team responsible for the blockchain-based game FootballCoin, and runs a successful podcast and YouTube channel.

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