Crypto Tax Loss Harvesting (2026 Guide)

Crypto tax loss harvesting can help you pay less tax on your crypto investments.

It’s totally legal, and many investors do it. However, there are some tricky rules you need to know around wash sales, depending on whether you're tax loss harvesting Bitcoin and other cryptocurrencies, or other investments like stocks.

That's why we've put together our tax loss harvesting crypto guide to help you pay less tax.

What is crypto tax loss harvesting?

Crypto tax loss harvesting is an investment strategy that helps reduce your net capital gains, which reduces your tax bill for the financial year.

Tax loss harvesting involves an investor selling crypto at a loss to create a capital loss. They offset the loss against their capital gains to reduce their overall tax bill. They may then buy back that asset at a reduced price to hold it for later gains.

How to tax loss harvest crypto

Here’s how crypto tax loss harvesting works:

• You have a capital gain from selling, swapping, or spending crypto (for example, Bitcoin)

• You need to pay Capital Gains Tax on that gain, which you don't want to do.

• You have an unrealized loss from crypto in your portfolio, as its value has dropped since you acquired it.

• You realize your loss by disposing of your crypto by selling, swapping, or spending it.

• You can offset this capital loss against your capital gain.

• You pay no Capital Gains Tax on that gain as a result.

• You may also be able to buy back the crypto, so your loss is artificial.

What are the benefits of crypto tax loss harvesting?

The main benefit of crypto tax loss harvesting is an overall reduction of your tax liability. Here’s how, in a bit more detail:

• Offset capital gains: By offsetting your profitable crypto sales with your losses, you reduce the amount of tax you have to pay for those gains.

• Carry forward losses: If you only have losses, you can carry these forward to future financial years so that you pay less tax in the future.

• Deduct from income: In the US, you can offset up to $3,000 a year in capital losses against ordinary income.

What are the risks of crypto tax loss harvesting?

Crypto tax loss harvesting is legal as long as you are following wash sales rules and don’t fall foul of the economic substance test. However, there are some risks you need to consider:

• Transaction fees: More sales and purchases of crypto = more transaction fees. This varies by exchanges: For some, this can be up to 4% per transaction. Ensure you’re fitting this into your calculations so that your savings aren’t being outweighed by the transaction fees.

• Buying assets back: If you sell at a loss and you’re buying assets back at a lower price, you are reducing the cost basis at the time of your repurchase. This may land you with an even bigger Capital Gains Tax bill in the future.

When should I sell crypto for tax loss harvesting?

As you may already know, the crypto market is volatile. Experienced investors use those dips in the market to sell their assets at a loss, knowing they can offset them against their net capital gains. They may then choose to buy that same asset back for the lower price, creating an artificial or paper loss.

To know when to sell, you need to track both your realized and unrealized gains and losses. You only have a realized gain or loss the moment you dispose of your crypto by selling, swapping, or spending it.

Before this point, you have an unrealized gain or loss. This means the price of your crypto has appreciated or depreciated since you acquired it, but you haven't yet sold it, so you haven’t realized your gain or loss. 

By tracking your unrealized losses and your realized gains, you can keep an eye on your taxable gains throughout the year and look for opportunities to create losses to offset them.

What's the crypto tax loss harvesting deadline?

You need to realize your losses (by selling, swapping, or spending your crypto) ahead of the end of the financial year (EOFY) in order to offset them against your gains that financial year. 

In the US, the financial year is the same as the calendar year, so you have until December 31st to realize your losses in order to offset them. 

Any transactions after this will count toward the next financial year. You then have until April 15th to file your tax return and report your gains and losses.

How often should I tax loss harvest crypto?

Many investors opt to harvest crypto losses annually. As the EOFY approaches, they’ll check through their crypto portfolio to identify any unrealized losses that they can utilize to reduce their tax bill for that financial year.

Pro investors make the most of market volatility throughout the year. They track unrealized losses strategically throughout the year and know how to buy during a dip. 

With a crypto tax calculator and portfolio tracker like Koinly, you can track your tax liability and your unrealized losses, allowing you to spot opportunities for tax loss harvesting crypto throughout the financial year.

Is there a limit to crypto tax loss harvesting?

The biggest capital loss limit is that each financial year, you can only offset a certain amount of capital losses against your net capital gain (this amount varies depending on the country you live in).

In the U.S, there is no limit on how many capital losses you can offset against your capital gains. 

However, if your capital losses exceed your net capital gains, you can offset a maximum of $3,000 in capital losses against ordinary income. You can carry capital losses forward indefinitely.

Which cost basis method for crypto tax loss harvesting?

Choosing the right cost basis method when tax loss harvesting can make a big difference, and US investors have multiple methods to choose from.

The IRS allows for several different cost basis methods under the Spec ID cost basis method. This includes:

• FIFO (First In, First Out)

• LIFO (Last In First Out)

• HIFO (Highest In First Out)

You should carefully consider which cost basis method will work best for your crypto tax strategy. 

A crypto tax calculator, like Koinly, can help you with this. By changing your cost basis method in settings, you can see how it changes your capital gain and loss calculations for the year. You can also use our free crypto tax loss harvesting tool to figure out which assets to dispose of.

What about short-term vs. long-term gains?

In the U.S, you'll pay a different rate of Capital Gains Tax on short-term gains and long-term gains. The IRS advises that you should offset gains and losses of a similar kind against each other in order. 

So, you'll offset short-term losses against short-term gains first, and long-term losses against long-term gains first, and so on. However, any remaining capital losses can be used to offset capital gains of the other type.

This is why it's important to know how long you've held the crypto that you're considering disposing of (for tax loss harvesting purposes), as you may be able to make significant savings on your tax bill by being strategic with it.

How to get started with crypto tax loss harvesting

To get started, you’ll need to review all your transaction data across your crypto wallets to see where your short-term and long-term capital gains, your capital losses, expenses, and crypto income are. 

Manually, this could take hours. You can shave off that time by using a crypto tax software like Koinly. That way, all you need to do to get started is set up your free account and sync all the crypto wallets and exchanges you use. 

Koinly then does all the calculations for you, and you can view all of your gains, losses, and income on the tax report summary page, which gives you a complete picture of your tax bill for the financial year.

Crypto tax loss harvesting tool

If you’re looking to start tax loss harvesting like a pro, you may want to look at crypto tax optimization tools. 

If you already have an account with Koinly, you can access the free tax optimization tool to help identify your unrealized crypto losses, so you can harvest them and reduce your overall tax bill.

The dashboard also allows you to experiment: You can simulate selling your different, underperforming cryptocurrencies to see how they’ll reduce your taxable gains.

How do I report crypto capital losses?

In the US, you'll report your losses as part of your annual tax return. 

With all the data you’ve imported to Koinly, you can generate specific tax reports based on your location. For example, you can download the IRS Schedule D and Form 8949 if you’re a US taxpayer, as well as TurboTax reports.