Denmark Crypto Staking and Mining Tax (SKAT Rules)

Staking Rewards Tax Treatment

When you stake cryptocurrency on a proof-of-stake network, you receive rewards in the form of additional tokens. Under Danish tax rules, these rewards are classified as personal income (personlig indkomst) under the speculative income rules. Specifically, SKAT treats staking rewards as "andel af personlig indkomst" — a share of personal income — because you are providing a service (validating transactions) in exchange for compensation. The reward is taxable at its fair market value in Danish kroner (DKK) from the moment it is received and at your disposal. This means you cannot defer tax by leaving the rewards in your staking wallet or by restaking them — once you have control over the reward (and you typically do once the staking protocol distributes it), the tax event is triggered.

The key SKAT ruling on staking is SKM2022.323.SR, which addressed the question of whether staking rewards from cryptocurrency networks are taxable upon receipt. The Danish Tax Council confirmed that staking rewards are taxable as personal income in the year they are received, valued at the market price on the receipt date. This ruling applies to both native staking (directly on a blockchain like Ethereum, Solana, or Cardano) and staking through third-party services (such as staking pools, exchanges, or staking-as-a-service providers). The taxpayer's cost basis in the staked asset itself (the principal) is not affected by staking — the original acquisition cost of the staked tokens remains unchanged. Only the rewards generate new tax events.

Valuation of staking rewards: Each reward distribution must be valued in DKK at the time it is received. If you receive 0.5 SOL as a staking reward when SOL is trading at DKK 750, you have DKK 375 of personal income. If you receive rewards daily, each day's reward is a separate taxable event. For validators operating their own infrastructure, rewards may accumulate and be claimable in batches — the tax event occurs when the rewards are claimable (i.e., when the validator has the ability to withdraw them), not necessarily when they are physically withdrawn to a wallet. The burden is on the taxpayer to determine when rewards are at their disposal. Most staking protocols make rewards available immediately or on a fixed epoch schedule, and SKAT expects diligent tracking of each reward event.

Restaking: When you restake your staking rewards (compounding), you do not avoid taxation on the rewards. The reward is taxable when received, even if you immediately add it to your staked principal. The act of restaking does not create a separate taxable event — it is simply a transfer of an asset you already own (now with a tax-paid cost basis) into the staking contract. However, if restaking involves a protocol that swaps your reward into a different token (e.g., using a liquid staking derivative), the swap itself may be a taxable cross trade. Read about cross trade rules →

Later Sale of Staking Rewards

When you later sell or otherwise dispose of tokens you received as staking rewards, the tax treatment shifts from income to speculation. The sale of staking rewards is treated as a disposal of cryptocurrency under the standard speculative income rules, using FIFO together with all other holdings of the same cryptocurrency. The cost basis of each staking reward token is its fair market value at the time you received it (the amount you already paid tax on as income). This prevents double taxation: you paid income tax when the reward was received, and only the subsequent appreciation (or depreciation) is taxed upon sale.

Example — staking and subsequent sale: Mikkel stakes 10 ETH on Ethereum. Over the course of 2025, he receives 0.5 ETH in staking rewards across 10 distributions, each valued at a different ETH price. The total value of the rewards is DKK 75,000, which he reports as income in box 20 on his 2025 tax return. His cost basis in the 0.5 reward ETH is DKK 75,000 total (varying per batch). In 2026, Mikkel sells 0.3 ETH from his staking rewards when ETH is worth DKK 180,000 per ETH. Under FIFO, the first reward batch he received (earliest) is deemed sold first. He must track which batch the 0.3 ETH comes from to calculate the cost basis. If the earliest reward batch was 0.05 ETH valued at DKK 6,000, the next 0.05 ETH at DKK 6,500, and so on, he works through the batches in order until he reaches 0.3 ETH. The total cost basis for the sale might be, say, DKK 40,000, and the proceeds are DKK 54,000 (0.3 x 180,000), giving a gain of DKK 14,000. The remaining staking rewards (0.2 ETH) retain their original batch cost bases for future disposals.

FIFO pooling with other holdings: Critically, the staking rewards do not form a separate pool from other ETH you own. If Mikkel also bought ETH on an exchange, all his ETH (purchased and staked) is treated as a single FIFO pool. This means when he sells ETH, the oldest units in the combined pool are deemed sold first. If his purchased ETH from 2023 is older than his staking rewards from 2025, the purchased ETH is sold before the staking rewards. This can significantly affect the gain calculation because the purchased ETH may have a very different cost basis than the staking rewards. Taxpayers who stake should maintain detailed records of all reward events and their values, and ensure their tax software correctly integrates staking rewards into the FIFO pool alongside purchased tokens.

Mining Tax Treatment

Cryptocurrency mining — whether proof-of-work mining of Bitcoin, Litecoin, or Monero — is taxed under a different framework in Denmark. SKAT's position, established in SKM2019.7.SR, is that crypto mining conducted by individuals is generally classified as a hobby business (ikke-beskatningsmæssig næring) rather than a commercial business. This classification has significant tax consequences: mining rewards are taxable as personal income (box 20) at their fair market value when received, but the costs of mining (hardware, electricity, cooling, internet, rent) are not deductible because the activity is classified as a hobby. This creates an asymmetric outcome: you pay tax on 100% of the revenue but can deduct 0% of the expenses, making mining economically unattractive from a Danish tax perspective for most individual miners.

If mining is conducted on a sufficiently large scale and with a genuine profit motive, it may be reclassified as a business (næring). Factors SKAT considers include the scale of operations (number of mining rigs, hash rate, power consumption), the degree of organisation and professionalism, whether the miner has a business plan and financial projections, whether the activity is conducted regularly and systematically, and whether the miner is seeking to generate a profit after expenses. If mining qualifies as a business, rewards are still taxable as income (box 111 for profit), but all legitimate business expenses become deductible (box 112 for losses). Mining equipment can be depreciated over its useful life (typically 3-5 years for computer hardware), electricity costs are fully deductible, and other operational costs (rent, internet, maintenance) can be offset against mining income. Business classification also means losses can offset other business income, potentially providing significant tax benefits in down markets.

Pool mining: Most individual miners participate in mining pools, where rewards are distributed based on contributed hash power. Pool mining rewards are taxable in the same way as solo mining: the reward is income at its fair market value when the pool distributes it to your wallet. Some pools pay out continuously (Pay-Per-Share), while others pay only when a block is found (Pay-Per-Last-N-Shares). The timing of taxation depends on when the reward is at your disposal — typically when it appears in your wallet. Pool fees are generally not deductible for hobby miners but are deductible for business miners as an operational expense. Cloud mining: Cloud mining contracts — where you pay a third party to mine on your behalf — are treated differently. The cloud mining provider typically charges a fee and distributes rewards to you. The rewards are taxable as income, but the fees you pay to the provider may be deductible. However, cloud mining contracts have been scrutinised by SKAT, and some may be reclassified as financial contracts rather than mining services. If SKAT reclassifies a cloud mining contract as a financial derivative, the income is treated under the financial contract rules (kapitalindkomst with mark-to-market taxation) rather than as mining income. Taxpayers engaging in cloud mining should request a binding ruling to clarify the treatment. Read about financial contract treatment →

DeFi Staking and Liquid Staking

Decentralised finance (DeFi) has introduced new forms of staking that raise additional tax questions. Liquid staking protocols like Lido (stETH), Rocket Pool (rETH), and Coinbase (cbETH) issue a receipt token representing your staked principal plus accumulated rewards. When you deposit ETH into Lido, you receive stETH in return. The stETH is a representation of your staked ETH and trades on secondary markets. For Danish tax purposes, swapping ETH for stETH is generally treated as a cross trade — a taxable event where ETH is disposed and stETH is acquired. The stETH has a cost basis equal to the value of the ETH given up. As staking rewards accrue, the value of stETH increases relative to ETH. When you sell stETH back to ETH (unstaking), that is another taxable cross trade. The appreciation (or depreciation) of stETH from your acquisition cost is a speculative gain or loss.

However, some tax professionals argue that stETH should be treated as the same asset as ETH for Danish tax purposes, given that stETH is simply ETH plus accrued staking rewards. The Danish Tax Council has not issued a binding answer specifically on liquid staking derivatives. In the absence of guidance, the conservative approach is to treat each swap between ETH and stETH as a taxable cross trade, and each staking reward accrual (reflected in the increasing value of stETH relative to ETH) as income when you sell or unwind the position. This is consistent with SKAT's general approach of taxing crypto-to-crypto exchanges. For liquid staking on other networks (e.g., mSOL on Solana, stDOT on Polkadot), the same principles apply: the conversion between the native asset and the liquid staking token is a cross trade, and the rewards embedded in the liquid staking token's price appreciation are taxed upon disposal.

DeFi lending staking: Protocols like Aave, Compound, and Morpho allow you to deposit crypto and earn yield from lending. The yield (interest) is taxable as personal income when received, valued at fair market value. If the interest is paid in the same cryptocurrency you deposited (e.g., earning ETH interest on ETH deposits), it follows the staking reward treatment: income upon receipt, cost basis set at market value, and later sale taxed under FIFO with other holdings. If the interest is paid in a different cryptocurrency (e.g., earning COMP tokens on an ETH deposit), the interest distribution is income, and the COMP tokens have a cost basis equal to their market value at receipt. Yield farming: More complex DeFi strategies that involve depositing liquidity, earning fees, and receiving governance tokens create multiple taxable events. Each deposit, withdrawal, swap, and reward distribution must be tracked. The general rule is: any change in beneficial ownership of an asset from one cryptocurrency to another is a taxable cross trade, and any receipt of new tokens without giving up existing tokens (rewards, airdrops) is income at fair market value. For active yield farmers, the number of taxable events can be extremely high, and professional tax software is essential.

Documentation Requirements

Thorough documentation is critical for staking and mining taxpayers. SKAT expects you to provide evidence of each reward event and the fair market value at the time of receipt. For staking, you should maintain: a log of each staking reward with date, time, quantity, and the cryptocurrency received, the wallet address where the reward was received and the staking contract address, the fair market value of each reward in DKK at the time of receipt, with the exchange rate source documented (e.g., CoinGecko, Kraken, SKAT official rates), the total aggregated reward value per tax year, the cost basis of each reward batch for future FIFO calculations, and records of any restaking activity showing that rewards were not sold but merely redeposited.

For mining, you should document: the date and amount of each mining reward received, the wallet address where rewards are deposited, the fair market value at the time of receipt in DKK, mining pool payout records and pool fee documentation, hardware purchase receipts and dates (for business miners), electricity costs and the methodology for allocating power costs to mining activity (for business miners), any business registration documents (for mining classified as a business), and if claiming business classification, a business plan showing profit projections and the commercial nature of the activity. For DeFi staking, you should additionally document: smart contract addresses for each protocol used, transaction IDs for each deposit, withdrawal, and claim transaction, screenshots or saved pages from the DeFi interface showing reward rates and balances, and any protocol documentation or white papers describing the reward mechanism.

SKAT may request all of this documentation during an audit. Failure to maintain adequate records can result in SKAT rejecting your claimed cost basis and treating the full value of your disposals as taxable gains. This is particularly punitive for stakers, who may have paid tax on rewards as income but cannot prove the cost basis when selling. Crypto tax software that supports Danish rules can automate much of this tracking. Popular options include Koinly (which supports Danish tax formats as well as FIFO), CoinTracking (which supports FIFO), Skatteguiden (a Danish-specific tool designed for SKAT reporting), and CryptoTax (developed specifically for Danish crypto taxpayers). Most of these tools can import data from exchanges and blockchain addresses via API and generate a report that shows the total gain or loss for the tax year, broken down by transaction type. Learn how to prepare for a SKAT crypto audit →

Reports and Records

While SKAT does not require a specific format for crypto reporting, you should be able to produce a comprehensive annual report summarising your staking and mining activity. A well-organised report should include: a summary of total staking rewards received during the year, total value in DKK at receipt, total mining rewards received during the year, total value in DKK at receipt, a detailed transaction log showing each reward with date, quantity, DKK value, and source, a reconciliation showing how rewards have been disposed or are still held, and a gain/loss calculation for any rewards that were sold during the year. This report should be filed with your annual tax records and retained for at least 5 years after the tax year (10 years in cases involving potential tax fraud allegations).

Using tax software for Danish staking: When using crypto tax software, ensure it supports staking reward tracking as a distinct transaction type. The software should correctly add the staking reward's value as income at the time of receipt and assign the same value as the cost basis for future disposals. It should also integrate the staking rewards into the FIFO pool with your other holdings of the same cryptocurrency. Many general-purpose crypto tax tools do not handle staking correctly for Danish rules because they treat staking as a separate portfolio or use average cost basis. Verify that your chosen software supports Denmark-specific tax rules and FIFO methodology. Consider running a test year through the software before committing to it for your actual tax filing. Some Danish taxpayers use a combination approach: using tax software for the transaction tracking and computational heavy lifting, then manually reviewing the output for compliance with SKAT rules before filing.

Common Staking and Mining Mistakes

Mistake 1 — treating staking rewards as capital gains: Some taxpayers mistakenly report staking rewards as capital gains (aktieindkomst) rather than personal income (personlig indkomst). This is incorrect — staking rewards are income at receipt under SKM2022.323.SR, and only the subsequent appreciation is speculative gain. Filing in the wrong box can lead to incorrect tax calculations and penalties. Mistake 2 — failing to report staking rewards as income: If you stake on a non-custodial wallet and receive rewards directly, it is easy to forget to track them. SKAT uses blockchain analytics and can identify staking reward transactions on public ledgers. Assume SKAT can see your staking activity. Mistake 3 — deducting mining expenses without business classification: Hobby miners cannot deduct electricity, hardware, or any other costs. Deducting these expenses without having mining classified as a business is a common error that SKAT will reject on audit, potentially triggering penalties for incorrect deductions. Mistake 4 — not tracking the cost basis of staking rewards: When you sell staking rewards, you need to know their cost basis (the value at the time of receipt). If you did not record this, you cannot substantiate your gain calculation on sale.

Mistake 5 — confusing staking with lending: While both generate yield, the tax treatment may differ. Staking rewards are unequivocally personal income under SKM2022.323.SR. Lending interest may also be personal income, but the underlying principal's tax treatment may differ if the lending involves transferring title to the crypto. Always ensure you understand which activity you are engaged in. Mistake 6 — ignoring DeFi liquidation risks: If you stake or lend on DeFi protocols and your position is liquidated (e.g., due to a price drop), the liquidation is a taxable event. The loss of your staked assets may constitute a deductible loss, but the calculation is complex. The liquidation is treated as a deemed disposal at the liquidation price, and you may have a gain or loss depending on your cost basis. Mistake 7 — not obtaining a binding ruling for large or novel staking arrangements: If you are validating on your own infrastructure, using a novel protocol, or staking very large amounts (over DKK 1,000,000), the safe approach is to request a binding ruling from SKAT to confirm the tax treatment. While this takes 3-6 months, it provides certainty and protects against penalties if SKAT later disagrees with your treatment.

FAQs

Do I need to pay tax on staking rewards if I never sell them?

Yes. Staking rewards are taxable as personal income at the time you receive them, regardless of whether you sell, hold, restake, or transfer them. The tax event occurs upon receipt at fair market value in DKK. If you restake the rewards immediately, you still owe tax on their value at the moment of receipt. There is no deferral mechanism for staking rewards under Danish tax law.

Can I deduct the electricity costs of my home mining operation?

Only if your mining activity qualifies as a business (næring) rather than a hobby. For most individual miners, SKAT classifies mining as a hobby under SKM2019.7.SR, meaning electricity costs are not deductible. If you operate at a significant scale (multiple rigs, dedicated premises, business registration), you may qualify as a business, in which case all legitimate operating expenses become deductible. Factors include scale, organisation, profit motive, and commercial character of the activity.

How do I value staking rewards if they come in very small amounts multiple times per day?

For small, frequent rewards, SKAT allows you to aggregate rewards over a reasonable period (e.g., daily or weekly) and use a single market price for the aggregated amount. The key is consistency — apply the same aggregation method throughout the tax year. If you use tax software, it will typically track each reward at the block level and use the price from the block timestamp. Document your aggregation methodology in case of audit.

Are airdrops from staking (e.g., EigenLayer points, Celestia airdrop for stakers) taxable?

Yes. If you receive an airdrop because you were staking a particular cryptocurrency, the airdrop is taxable as personal income at its fair market value when you gain control over it. This is separate from the staking rewards themselves. The cost basis of the airdropped tokens is set at the market value on the receipt date. Even if the airdrop is distributed in the form of "points" that later convert to tokens, the tax event occurs when you can control the tokens (typically at the TGE or claim date).

What happens if I stake ETH through a Danish exchange like Coinbase or Kraken?

The tax treatment is the same as staking directly on Ethereum — the staking rewards are personal income at fair market value when received. The exchange will typically distribute rewards periodically (daily or weekly). Some exchanges provide tax reports showing the staking income. However, note that if the exchange charges a fee for staking services, the fee is generally not deductible for individual taxpayers (hobby classification). If you are classified as a business, the staking fee may be deductible as an operating expense.