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Written byMichelle Legge | Koinly Head of Crypto Tax Education

Curve Finance Tax Statements & Reports

Written byMichelle Legge | Koinly Head of Crypto Tax Education

Last updated: Wednesday, 2 February 2022

If you're looking to organise your Curve Finance taxes, look no further. Here we explain what Curve is, what it's good for and how to file your Curve tax report.

What is Curve Finance?

Curve Finance ( is an automated market maker (AMM) protocol designed for swapping between stablecoins with low fees and slippage. It's also a decentralized liquidity aggregator where anyone can add their assets to different liquidity pools. In other words, it’s a very cool Dapp.

What is Curve Finance good for?

Crypto assets are valued according to a pricing formula instead of an order book. The formula used by Curve is designed to facilitate swaps that happen in a similar range.

To give an example, we know that 1 USDT should equal 1 USDC, which should equal roughly 1 BUSD, etc. However, if you'd like to convert 10 million dollars of USDT to USDC, and  then convert  it again to BUSD, this inevitably leads to ‘slippage’.  But what is slippage? 

Slippage is the difference between the price you expect to get on the crypto you have ordered and the price you actually get when the order executes, caused by volatility and liquidity. Curve's formula is designed to minimize this slippage as much as possible.

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How to prepare Curve Finance taxes

Now, your local tax office wants to know about your transaction history, including your profit and loss, income and expenses. So to get started with your taxes, you'll need your complete transaction history. But don't stress. This is easy to get hold of in your account or by using a crypto tax app. Today, we're looking at both.

How to download & export Curve Finance trading & transaction history

You can download and export your trading and transaction history within your Curve account. There are two ways to do this.

  1. Use the tax report API with crypto tax software. If you use the tax reporting API with a crypto tax apo, all your transaction history will be automatically imported to your chosen app. 
  2. Export transaction history in a CSV file. Then you can either do your taxes manually (not recommended), or upload this to a software that will organise it for you.

Does Curve Finance provide a tax report?

No, does not provide a tax report.

However, you have the option to integrate your transaction history with a crypto tax software. This will automatically generate a tax report, saving you the hours and hours required to go through all the transactions yourself.

The simplest way to do this is to integrate it with a crypto tax calculator. This fetches all your transaction history for you, meaning you don't need to download multiple CSV files from your other exchanges or wallets.

Does Curve Finance supply a financial statement?

Yes. Your transaction history is your financial statement. Your account statement includes your complete trading history on, which you can use to create a tax statement to submit to your local tax office.

Remember this — you'll need your complete trading history for however long you've had the account in order to calculate your short and long-term gains. Otherwise, you might end up paying more tax than you need to.

To avoid this, your financial statement to a crypto tax app to fetch a tax statement within minutes. Better than fiddling with a spreadsheet for hours, right?

How to generate a Curve Finance tax form

As mentioned quite a few times now, you have two options when it comes to generating a tax. The first is via a crypto tax app, the second is to do it manually. Let's look at both.

If you're DIY-ing your crypto taxes, your tax office wants to know about every single taxable event. This means you’ll need to go back through every transaction you made in this tax year, and find everything that gains and losses from selling, swapping, spending or gifting crypto. This is a pain in the you-know-what.

In addition, your tax office also wants to know about any income you've made from crypto. This may include things like mining, staking or airdrops. 

Once you have all this information, include it in your annual tax return. The amount of info you'll need to include varies depending on where you’re based (US, UK, Australia, etc). This is because some tax offices only want to know about your net capital gains or losses and any additional income, while others (like the US) want a more detailed breakdown of each taxable transaction.

If you'd like to avoid the brain-numbib task of deciphering through every single transaction, you’re better off using crypto tax software. Why? This special software generates your tax report for you. 

To do this, take the Curve tax report API and upload your transaction history CSV into a crypto tax app. Press a few shiny buttons on the screen, and wala— you're done. 

Koinly can even generate pre-filled tax reports based on your location and your local tax authority - for example, a pre-filled IRS Form 8949 and Schedule D. This saves you a lot of stress.

Curve Finance CSV exports

Need to get your CSV export in time for the tax deadline? No worries.

Log into and select your profile in the top right corner. You'll see all the different types of transactions you've made in the drop down menu and you can download a CSV file to cover all the different kinds of transactions you've made on, for example your order history CSV file, trade history CSV file, PnL CSV file and rewards CSV file.

Remember, you need to ensure your CSV file covers the entire period of time you've been using - not just the specific financial year you're reporting on. This is so you can calculate your short-term and long-term gains accurately.

Curve Finance tax API

If you're using crypto tax software instead, the easier option is just to use the tax API. It takes less time, there's no fiddling around with multiple CSV files and it's easy to do.

Just log in to and select profile from the top right corner, then settings from the drop down menu. Then select API, and create a read-only API key. Copy the API key and API secret and paste these into your chosen crypto tax app. Done.

Does Curve Finance provide an end of year statement?

No, does not provide an EOFY statement.

However, your CSV files can work as your end of year statement. Follow the instructions above to create this.

Does Curve Finance report to the IRS and other tax authorities? stopped operating in the US due to the strict regulations around crypto prediction contracts. This is why US was set up.

We can assume from this that have been under considerable scrutiny by both the IRS and other financial authorities (such as HMRC and ATO). Although have not said officially that they report to the IRS, it is likely that they do. Just like other large crypto exchanges, they have to share customer data to ensure tax compliance.

The best way to remain tax compliant with the IRS is to make sure your crypto tax report is accurate.

Koinly is a Curve Finance tax calculator & reporting tool

As mentioned throughout this piece, Koinly is a crypto tax tool that calculates your crypto taxes for you, meaning you don’t have to go through the hassle of doing it yourself.

Not only does the software integrate with Curve’s transaction history, but it calculates your taxes in a format that makes sense for your country’s tax office. Essentially, Koinly does all the boring tasks that would cost your hours and hours sitting at a computer.

As a quick breakdown, here’s a short summary of what Koinly does:

  • Imports all your trades including purchases, sales, swaps, and rewards.
  • Converts your transactions into your country’s currency at fair market value (this in itself is a massive time saver).
  • Deciphers which of your Curve trades are taxable and which are not. 
  • Allows you to submit a clean and accurate report to your tax office.

Get your crypto tax report today!