banner border
Koinly crypto tax calculator explains crypto interest tax


What is Crypto Interest and How is it Taxed?

Last updated: Friday, 12 November 2021

Earning interest is a great way to put idle crypto assets to good use, but it has big implications for your tax bill. Learn more.

HODLing for the moon is a common strategy in crypto - but what if you could do more with your idle assets?

Both centralized and decentralized crypto exchanges and other DeFi apps offer a variety of opportunities for crypto investors to earn interest on their held assets.

We’re looking at what crypto interest is, how you can earn interest on your crypto and what it means for you come tax time.

What is crypto interest?

Just like you could deposit fiat currency into a savings account with a bank and earn interest - and even compound interest - you can do the same with your crypto.

The key difference is that in most instances, instead of you earning interest in fiat currency - you’ll earn it in cryptocurrency. In some instances, this will be the same currency as the asset you’ve deposited into a given account. In other instances, it will be in a different cryptocurrency, like a stablecoin or a liquidity pool token.

You can either hold these interest earnings and further invest them or you can sell them for fiat currency when you receive them.

From the other end of the perspective - you’ll also pay interest, often in crypto, whenever you take out a crypto loan. You can find out more about the tax implications of crypto lending in our guide.

Koinly crypto tax calculator - what is crypto interest

Koinly Call To Sign Up Banner

How can you earn interest on crypto?

Centralized exchanges have offered ways for crypto investors to make interest for some time now. For example, you can:

  • Earn interest lending your crypto - like on Binance.
  • Open a crypto interest account - like on BlockFi.
  • Open a crypto savings account - like on Coinbase.

These various options offered great interest rates - much higher than you’d see from traditional financial institutions like a bank. 

But crypto investors are always looking for the biggest gains - which is where crypto DeFi comes in. DeFi has been revolutionizing the crypto space, offering new ways for investors to earn interest on idle assets. Some examples include:

  • Adding assets to liquidity pools on DeFi lending apps - like Aave.
  • Adding assets to liquidity pools on DeFi exchanges - like Curve.
  • Investing assets in vaults in DeFi yield farming apps - like Yearn.
  • Adding assets to DeFi insurance liquidity pools - like Armor.
  • Deposit assets into a DeFi savings account - like Oasis.
  • Freeze assets in a DeFi long term savings account - like Cake DeFi.

Koinly crypto tax calculator - how can you earn interest on crypto?

Because they don’t have the overhead costs centralized exchanges face - and because they don’t have to follow regulations - DeFi apps are often offering much higher interest rates. Yield farmers (investors who chase the highest gains on DeFi apps) are seeing returns of up to 20% APY (annual percentage yield) by combining several DeFi protocols and reaping the rewards in compound interest. This kind of return is practically unheard of in traditional financial markets.

As well as this, crypto DeFi is constantly evolving and creating new opportunities and means for crypto investors to make passive income. In other words, watch this space.

Suffice to say, it’s got investors excited, but when the gains are this big so are the tax implications.

How is crypto interest taxed?

From a tax perspective, crypto is seen one of two ways - either as income or as a capital gain. 

Koinly crypto tax calculator - how is crypto taxed?

When it comes to crypto interest, in most instances, tax offices are going to see this as a type of income - similar to a dividend or a bonus - and apply Income Tax. This would be the case when you’re earning crypto through interest. To calculate what you’ve earned and your subsequent taxes, you simply use the fair market value (FMV) of the crypto asset on the day you received it and report this as additional/miscellaneous income in your annual tax return.

While crypto interest is subject to Income Tax, when you later ‘dispose’ of it by selling it, swapping it, spending it or gifting it - any profit from this will also be subject to Capital Gains Tax. This is because crypto is seen as an asset - like a stock - and whenever you make a disposal of an asset, it’s viewed as a capital gain or loss from a tax perspective. Let’s look at an example.


You deposit 1 BTC into a crypto interest account, offering 9% APY and leave it there for a year. Let’s say BTC holds firm at around $60,000 for the whole year to keep things simple.

You earn 0.09 in BTC in interest throughout the year - so a total of $5,400.

You’d report $5,400 of additional income to your tax office. This would be taxed at your normal Income Tax rate.

The price of BTC rises, so you later sell your 0.09 BTC for $6,000. You use the FMV of your asset on the day you received it as your cost base. Then subtract your cost base from the price you sold the asset for to figure out your capital gain.

$6,000 - $5,400 = $600. You’ve made a capital gain of $600 and you’d pay Capital Gains Tax on this.

To make matters more complicated, you’ll only be ‘earning’ crypto when you’re seen to be gaining more assets of a monetary value. This matters because some DeFi apps have changed the way you ‘earn’ through liquidity pools. 

Some DeFi platforms - like Compound - don’t give out more tokens the longer you stay invested in a given liquidity pool. Instead, the token(s) you originally received in exchange for your share in a pool increases in value.

In these instances, you might not be seen to be earning an income. After all, you’re not getting any new tokens or coins. Your assets are the same. It’s only when you remove your assets from the pool and exchange your token back that you’ll have made anything. There is no specific tax guidance on these transactions yet - but there is an argument that this would be more akin to a swap of crypto and therefore subject to Capital Gains Tax, not Income Tax.

You should speak to an experienced accountant for more advice on how to report these transactions to your tax authority. You can also look for more specific advice for crypto tax in your country in our crypto tax guides.

How Koinly calculates interest and crypto taxes

Koinly makes crypto taxes simple, including any crypto interest taxes. All you need to do is import your crypto transactions, including any transactions relating to crypto interest. We support a huge variety of centralized exchanges, wallets and blockchains to make this easy for our users.

Koinly will automatically identify your different transactions and tag them accordingly. So for example, if you import your BlockFi history - this should include your interest transaction history. Koinly will then automatically tag this as income and include it in your tax summary. 

Koinly crypto tax calculator - tax summary on Koinly

If for any reason your transaction history is incorrect, don’t worry, you can also tag income manually. Just find the transaction(s) you know are income and tag them using the three dots on the right hand side.

Koinly makes crypto tax easy. Get started for free today.


  • You can earn interest in crypto from your held crypto assets.
  • Centralized exchanges let you lend crypto and earn interest, as well as offer interest and savings accounts.
  • DeFi apps offer many different ways to earn interest on your crypto and often higher interest rates.
  • In most instances, crypto interest is viewed as income and subject to Income Tax.
  • However, there are some DeFi apps that pay in a way that could be seen as a capital gain instead.
  • You'll pay Capital Gains Tax if you later sell, swap, spend or gift crypto earned through interest.


Motta våre historier

Fra oss til innboksen din, ukentlig.