Denmark Crypto Tax 2026

Denmark is the EU jurisdiction where the headline and the law diverge most. The headline — "42% tax on unrealised crypto gains" — comes from a widely-reported legislative proposal. The law that actually applies in 2026 is the existing regime: realised crypto gains taxed as personal income at high rates. This guide separates what applies now from what is proposed, because conflating the two is the central risk for a Danish holder.

TL;DR

• Current law (applies now): realised crypto gains taxed as personal income at relatively high marginal rates; historically asymmetric loss deductibility.
• Proposal (NOT enacted): a mark-to-market tax on unrealised crypto gains, reported around 42%, with broader loss offsetting.
• The unrealised-gains regime is a legislative proposal in process — not current law.
• No reliable effective date for the proposal; do not plan irreversibly around it.
• Do now: comply with current realised-gain rules, keep complete records, monitor the bill with a Danish adviser.

What applies now: realised gains as personal income

Under the current Danish rules, an individual's realised crypto gains are generally treated as personal income rather than taxed at a low flat capital-gains rate. The practical consequences:

• Realised disposals (sale to fiat, crypto-to-crypto, payment) are the taxable events.
• Gains are taxed at the relatively high marginal rates that apply to personal income.
• Loss deductibility has historically been asymmetric — a long-standing criticism the proposal (below) aims to address.

This is the regime a Danish holder files under for 2026. It is unambiguous and current. The €/DKK-value reconstruction of acquisitions and disposals is essential, because the realised-gain computation depends on it.

What is proposed: unrealised gains, ~42%, mark-to-market

Separately, there is a widely-reported proposal arising from Danish tax-law work on crypto: to tax unrealised crypto gains on a mark-to-market basis, at a rate reported around 42%, potentially applying broadly to holdings. Reporting has also described an intent to allow broader loss offsetting (for example crypto losses against gains in financial contracts) to correct the current asymmetry.

Three things must stay explicit:

1. It is a proposal, not enacted law. It is in the Danish legislative process; it may change materially or not pass.
2. No firm effective date should be relied on. Reporting has referenced an intended start in the mid-2020s, but an unenacted bill has no dependable date.
3. It would be a fundamental shift — from taxing realised gains to taxing value changes whether or not you sell. That magnitude is exactly why the proposal/law distinction matters.

Stating the proposal as if it were current law would be a factual error with real consequences for a holder's planning. It is reported, significant, and worth monitoring — and not the law in force.

Why the distinction is the whole article

For most country guides the task is "explain the rules." For Denmark in 2026 the task is "explain which rules are rules." A holder who reads "Denmark taxes unrealised gains at 42%" and acts on it — accelerating disposals, restructuring — may be reacting to something that is not law and may not become law in that form. The correct posture is dual:

• Comply with the current realised-gain personal-income regime for actual 2026 filings.
• Monitor the proposal through a Danish adviser; prepare records that work under either regime.

DAC8 and Denmark

From 1 January 2026, CASPs report Danish residents' crypto activity, exchanged to Skattestyrelsen by 30 September 2027 for FY 2026 (Denmark was among the early DAC8 transposers — see DAC8 transposition by country). Under the current regime the cross-check focuses on whether realised gains were declared as personal income. Were the proposal to pass, complete holdings data would matter even more (mark-to-market needs valuation, not just disposal records). Either way, complete acquisition/disposal/holding records are the common requirement — and DAC8 makes under-declaration of current realised gains materially more detectable now.

Practical workflow for Danish residents

1. File under current law: realised gains as personal income; keep DKK-value records of every acquisition and disposal.
2. Maintain full holdings history (not just disposals) — it is needed under the current regime and would be essential if the proposal passes.
3. Do not plan irreversibly around the proposal — it is not enacted.
4. Monitor the bill's status with a Danish adviser; revisit planning only on actual enactment.
5. Reconcile against DAC8-reported data (see DAC8 impact on individuals).

How vendor tools handle Denmark

Koinly and Divly support Danish realised-gain reporting and history reconstruction. Confirm the tool computes under the current personal-income realised-gain regime; treat any tool messaging about a 42% unrealised-gains model as contingent on enactment, not current law. No tool should be relied on to track legislative status — that is an adviser's role.

How Wag3s helps

Wag3s Folio reconstructs complete multi-chain holdings and disposal history with DKK values — the records that work under the current regime and would be required if the proposal is enacted — and reconciles against DAC8-reported activity. For Danish entities operating on-chain, Wag3s Ledger provides audit-ready records and multi-chain reconciliation. See the Folio and Ledger pages.

Further reading

• How to Do Crypto Taxes
• Sweden Crypto Tax Guide 2026
• Finland Crypto Tax Guide 2026
• Netherlands Crypto Tax Guide 2026 — another value-based model (Box 3)
• DAC8 Impact on Individuals
• DAC8 Transposition by Country

Sources

• Skattestyrelsen (Danish Tax Agency) — current guidance on taxation of crypto-asset gains as personal income
• Public reporting on the Danish proposal to tax unrealised crypto gains (legislative proposal, not enacted) — e.g. Digital Watch Observatory
• Council Directive (EU) 2023/2226 (DAC8) — EUR-Lex