tax on stocks, funds, crypto

If you invest outside an ISK or capital insurance, Sweden generally taxes your capital gains when you sell or otherwise dispose of an investment.

The rules are different for an ISK, where you normally pay an annual tax based on a standardised calculation rather than tax on each individual gain.

what counts as taxable

For a regular investment account, you may need to report:

• profits from selling shares or funds
• dividends
• gains from other taxable securities
• crypto gains when you sell, exchange or otherwise dispose of crypto

If you make a taxable gain, you generally pay 30% capital income tax on the gain.

Losses can also matter. Depending on the type of investment, losses can be offset against certain gains, and any remaining deductible loss may reduce your tax through the rules for capital losses.

simple example

You buy shares for 10,000 SEK

You later sell them for 15,000 SEK

Gain: 5,000 SEK

At a 30% capital gains tax rate:

Tax: 1,500 SEK

This is a simplified example and assumes the full gain is taxable.

If you invest through a Swedish bank or broker such as Avanza or Nordnet, much of the information needed for your tax return is normally reported to Skatteverket.

Some information can therefore be pre-filled or used to prepare your declaration. But pre-filled doesn't mean “nothing to check”.

You should still check that:

• purchases and sales are included correctly
• the purchase price is correct
• corporate actions such as splits or issues have been accounted for
• gains and losses look reasonable

For some securities, you may still need to calculate or correct the figures yourself.

If you use an international broker or investment app, such as Interactive Brokers, eToro or an overseas crypto exchange, don't assume your Swedish tax return will contain everything you need.

Foreign income that is taxable in Sweden may need to be added to your return, and amounts may need to be converted into SEK.

The platform may provide tax documents or report information to tax authorities, but you are still responsible for making sure your tax return is correct.

Keep records of:

• what you bought
• when you bought it
• what you paid
• when you sold or exchanged it
• what you received
• fees and other relevant costs
• the currency and exchange rate where applicable

This becomes particularly important if you have made lots of trades.

Omkostnadsbelopp is essentially the amount used to establish what an investment cost you for tax purposes.

Your taxable gain is generally the amount you made from the sale after taking your purchase cost and certain selling costs into account.

If you bought the same type of investment several times, calculating the correct omkostnadsbelopp can be more complicated. Sweden generally uses the average-cost method (genomsnittsmetoden) for shares and fund units, although specific rules and exceptions apply.

So don't simply assume that the number shown by your broker is always correct — particularly if you transferred investments between platforms or have older holdings.

Crypto is generally treated as an asset for Swedish tax purposes.

A taxable event can occur when you:

• sell crypto for SEK or another currency
• exchange one cryptocurrency for another
• use crypto to pay for goods or services

So you can potentially owe tax even if you never convert the crypto back into Swedish kronor.

For example:

You buy Bitcoin.

Later, you exchange some Bitcoin for Ethereum.

That exchange can itself create a taxable gain or loss. You don't have to withdraw the money to a bank account for the tax event to occur.

the average-cost method

For crypto, you generally need to calculate the average acquisition cost (genomsnittsmetoden) for the crypto you dispose of.

This means keeping track of your purchases and working out the average cost of the crypto you hold. The calculation can become difficult if you have made many purchases, transfers or exchanges.

That's why crypto investors should keep detailed transaction records rather than relying only on the annual statement from an exchange.

Many Swedish investors use an ISK (Investeringssparkonto), which works differently from a regular investment account.

With a regular account, you generally pay 30% capital gains tax on taxable profits when you sell an investment. With an ISK, you don't normally pay tax on each individual gain, sale or dividend. Instead, you pay an annual tax based on a standardised calculation (schablonintäkt) linked to the value of your savings and deposits.

2026 update: tax-free allowance

From 1 January 2026, the tax-free basic level for ISK, capital insurance (kapitalförsäkring) and PEPP savings increased to 300,000 SEK per person.

• The SEK 300,000 allowance applies to your combined eligible savings, not to each ISK account separately
• You pay tax on the portion above the tax-free level
• The allowance is applied automatically in your tax return

For 2026, the standardised income rate is 3.55% of the relevant capital base, which is taxed at 30%. That gives an effective tax rate of 1.065% on the taxable portion above the SEK 300,000 allowance.

what does this mean in practice?

The ISK tax is not based on whether you actually made a profit that year.

Your investments could rise, fall or stay roughly the same, and the ISK calculation still applies. This makes ISK different from a regular account, where tax is generally linked to realised gains.

An ISK can be attractive for many long-term investors, particularly with the 2026 tax-free allowance. But it isn't automatically the best choice for everyone. Your investment strategy, returns and circumstances all matter.

Losses aren't necessarily wasted.

If you sell investments at a loss, the loss may be used against certain capital gains. If losses remain after offsetting, different deduction and reduction rules can apply.

So don't ignore a losing investment when you do your tax return. It may affect your overall tax position.