Writing Off a Total Crypto Loss: When the Tax Office Recognises Worthless Coins

A token that has lost 98 percent of its value feels like a tax case. For the tax office it is initially nothing at all. As long as you leave the crypto assets concerned sitting in your holdings, nothing has happened for tax purposes, however far the price has fallen and whether or not anyone is still bidding for them.

This gap between economic damage and tax effect is why many investors give their losses away. The cause is no special rule for cryptocurrencies but the logic of the private disposal transaction. Anyone who understands it can shift several thousand euros of tax burden in a bad year. Anyone who overlooks it pays the full rate on later gains, even though the loss was borne economically long ago.

This article explains when a total crypto loss is recognised for tax, what applies in a delisting and an exchange insolvency, how offsetting against other gains works and which steps in the tax return are actually needed. It is no substitute for tax advice; with larger amounts and unresolved circumstances the case belongs in the hands of a tax adviser.

No disposal, no crypto loss: why Section 23 of the Income Tax Act ignores a falling price

For crypto assets held privately, German income tax law knows no loss in value, it knows only a disposal transaction. What is taxable under Section 23 (1) sentence 1 no. 2 of the German Income Tax Act is the disposal of another asset where no more than one year lies between acquisition and disposal. Without that event there is no gain to tax and no loss to claim.

That sounds formal but has a very practical consequence. A coin that has fallen from an entry value of 4,000 euros to 40 euros reduces your tax by exactly zero euros while it sits in your wallet. Only the sale, the swap into another crypto asset or paying for goods with the token turns the book loss into a loss you can use for tax.

How the calculation then looks is described by the federal finance ministry in margin number 57 of its crypto assets circular: the gain or loss is worked out from the disposal proceeds less the acquisition costs and the related expenses. All three figures presuppose that a transaction has taken place. Where the proceeds are missing because nothing was sold, the basis for the calculation is missing too.

Crypto assets are other assets and not investment capital, which shapes the loss

For the loss side the classification is decisive, because it determines which income you may offset against at all. The Federal Fiscal Court settled the question in its judgment of February 14, 2023 under case number IX R 3/22. Under the first headnote, virtual currencies in the form of currency tokens also count among the other assets that can be the subject of a private disposal transaction within the meaning of Section 23 (1) sentence 1 no. 2 of the Income Tax Act. The proceedings concerned bitcoin, ether and monero; the lower instance was the Cologne Fiscal Court under case number 14 K 1178/20.

Crypto losses therefore land in a pot of their own, sealed off from the rest. Such a loss is not investment income running through a bank's loss pots, and it does not count as a related expense that reduces your salary either. Anyone who earned gains on shares, interest or dividends in the same year cannot offset a crypto loss against them.

What belongs in the same pot

All private disposal transactions under Section 23 of the Income Tax Act fit into the offsetting. Alongside crypto assets that includes physical gold and silver, collectors' items such as watches or art, and property within the relevant periods. A loss on a sold altcoin can therefore quite well neutralise a gain on the sale of a gold coin, provided both events are taxable.

The one-year period of Section 23 devalues your crypto losses as well

The one-year holding period works in both directions, and that is exactly what many investors overlook. Sell at a gain after more than twelve months and you pay no tax. Sell at a loss after more than twelve months and you get no recognition for it either. The event is simply not taxable, and an event that is not taxable produces no deductible loss.

For a holding deep in the red the usual advice therefore turns around. With winning positions it pays to wait until the period has run. With losing positions you intend to unwind anyway, the moment before the anniversary of the acquisition is the one that works for tax. Sell a position bought in October in the following November and you carry the same economic damage with nothing to show for it.

Where the same coin was bought several times at different moments, allocating the individual tranches is what counts. Without clean records there is no way to show which units were acquired when, and without that evidence the period cannot be proven. Which documents are needed for it is set out at length in our article on documenting crypto losses.

Offsetting crypto losses works only against private disposal transactions

The offsetting rule sits in Section 23 (3) sentence 7 of the Income Tax Act and is drawn narrowly. Losses may be set off only up to the amount of the gain you made from private disposal transactions in the same calendar year. The general loss deduction under Section 10d is expressly ruled out at this point.

An example makes the effect visible. Say you realise 6,000 euros of gains from short-term crypto sales in one year and 4,500 euros of losses from unwinding two collapsed positions. Both amounts are offset in full, leaving 1,500 euros of taxable overall gain. Had you not realised the loss, the full 6,000 euros would have been charged at your personal income tax rate.

The reverse also holds. A loss with no matching gain in the same year does not evaporate, it merely travels onward. How that works is governed by the next sentence of the statute.

Loss carry-back and carry-forward under Section 10d keep a crypto loss year alive

Section 23 (3) sentence 8 of the Income Tax Act opens the door that sentence 7 had just closed. In accordance with Section 10d, the losses reduce the income you made or make from private disposal transactions in the immediately preceding assessment period or in the following assessment periods. Section 10d (4) applies accordingly.

In practice that means two routes. The carry-back reaches exactly one year into the past: if you had taxable crypto gains last year and losses this year, the old assessment can be amended and tax refunded. The carry-forward runs into the future without a time limit and waits there for the next gain from a private disposal transaction.

The carry-forward does not arise by itself

A carried-forward loss has to be separately assessed. That happens only where the loss was declared in the tax return for the year of the loss. Anyone who does not file at all for a bad year, because no tax is due in any case, loses the carry-forward for every later year. That return is therefore no formality but the only way to preserve the loss.

The 1,000 euro threshold decides the taxable overall gain on crypto losses

Under Section 23 (3) sentence 5 of the Income Tax Act, gains stay tax free where the overall gain made from private disposal transactions in the calendar year came to less than 1,000 euros. The word overall is the decisive one here: what counts is the sum of all gains and losses in the year, not the individual sale.

This is a threshold and not an allowance. At an overall gain of 999 euros everything stays tax free; at 1,000 euros the entire amount becomes taxable from the first euro. A realised loss can therefore have a disproportionate effect close to the borderline, because it pushes the overall gain below the line.

Anyone wanting to keep sight of these sums across several exchanges, wallets and swaps will struggle without software. Which providers handle German forms, FIFO allocation and loss pots cleanly is shown by our comparison of crypto tax tools and portfolio trackers.

Delisting without a trading pair: the token you can no longer dispose of

With a delisting the case turns awkward. When an exchange takes a trading pair off the market the token remains; what disappears is the option of selling it there. For tax purposes the holding therefore stays in your assets unchanged, and the fall in value stays without effect. What happens technically to holdings in a delisting is described in our article on tokens that can no longer be traded.

The way out is to bring the event about actively while that is still possible. Often a withdrawal to your own wallet stays open for a limited period, and often there is still a residual market elsewhere. Neither is any consolation for the fall in price, but it is the difference between a usable loss and a lost one.

When the exchange converts on its own

Some trading venues reserve the right to convert remaining holdings into a stablecoin once a deadline has passed. Where that happens, the swap is a disposal with every consequence: inside the one-year period a taxable gain or loss arises, outside it the event is irrelevant. Since such clauses are regularly worded as an option rather than a commitment, you should not rely on realisation happening by itself.

Exchange insolvency and segregation: when a shortfall becomes a realised crypto loss

When a trading platform files for insolvency the coins are economically blocked but still present for tax purposes. No disposal has taken place, and insolvency proceedings are not in themselves a disposal transaction. Only once it is settled to what extent you will be satisfied and what finally falls away is there any sensible way to talk about the tax treatment; such proceedings regularly drag on for years.

Whether your coins fall into the insolvency estate at all, or whether a right of segregation exists, is the prior and usually more important question. It decides whether you are one creditor among many or hold a claim for surrender. The civil law side of that distinction is covered in our article on segregation in exchange insolvencies.

The finance ministry circular of March 6, 2025 and the gap on total loss

The governing administrative instruction is the federal finance ministry circular Individual questions on the income tax treatment of certain crypto assets of March 6, 2025. It runs to 34 pages, replaces the version of May 10, 2022 and adds to it above all duties of declaration, cooperation and record keeping.

What the circular does not contain is a section of its own on total loss. It defines crypto assets, allocates income, deals with mining, staking, lending and airdrops, and describes the calculation of the gain on a disposal in margin number 57. A rule for the case where an asset perishes economically without a disposal is sought there in vain.

For you as an investor that means the administration gives no assurance that a worthless holding will be recognised without a sale. Anyone relying on analogies to other categories of income is running a legal dispute with an open outcome. The route you can plan for remains actual realisation inside the one-year period.

Duty to cooperate: data lost through insolvency or a hack is at your expense

The finance ministry circular turns unusually plain in one place. On the duties to cooperate it states that the taxpayer has to clarify the facts and obtain the necessary evidence; that this covers in particular the regular and complete retrieval of the transaction overviews of central trading platforms. And then follows the sentence that costs the most money in practice: missing records and data losses, for instance because of the insolvency of the trading platform or as a result of a hack, are at the expense of the taxpayer.

The allocation of risk is therefore unambiguous. When the exchange disappears and access to your trading history goes with it, you can prove neither the date of acquisition nor the acquisition costs to the tax office. Without that evidence no loss can be applied, and in the opposite case an estimate may turn out against you. At decentralised trading venues the circular adds that the heightened duty to cooperate under Section 90 (2) of the Fiscal Code generally applies as well.

The consequence is unspectacular and effective: transaction histories belong exported and stored locally on a regular basis, not only once a platform runs into trouble. Anyone not actively trading a holding is better off moving it into their own custody.

Realising a crypto loss in practice: sale for tiny amounts, swap and dust conversion

When a holding is worth almost nothing, the plain question is how to get rid of it at all. Three routes lead to a realisation, a fourth only looks as if it does.

1. Sale through an existing trading pair. Proceeds of a few euros are still disposal proceeds. The loss follows from the difference to the acquisition costs and can be documented cleanly.
2. Swap into another crypto asset. For tax a swap is a disposal of the asset given up and an acquisition of the one received. It works even where no euro pair exists any more.
3. Conversion of tiny holdings. Some trading venues offer to swap residual amounts in a bundle into another token. The event creates a disposal but is shown differently in the statements and should therefore be tracked individually.
4. Transfer without consideration. Moving coins to your own wallet is not a disposal and changes nothing for tax. Anyone simply sending the holding to a third party's address is giving it away and realises no deductible loss either.

The one-year period applies in every case. Before unwinding, check when the units concerned were acquired and work through the tranches whose period is still running. Which trading venues still carry residual pairs for collapsed assets changes constantly; an overview of the available providers is in our exchange comparison.

Schedule SO and separate loss assessment: what has to be in the tax return

Private disposal transactions are declared in Schedule SO. For each event you enter the description of the asset, the acquisition and disposal dates, the disposal proceeds and the acquisition and related costs. From those entries follows the gain or loss that the tax office feeds into the threshold and the offsetting.

Three mistakes that cost you the loss

The most common mistake is the return not filed in the year of the loss because no tax is due. No return, no assessment; no assessment, no carry-forward. The second is the incomplete capture of swaps, which do not show up as a sale in many statements but are exactly that for tax. The third concerns holdings on several platforms that are evaluated separately, even though the threshold looks at the annual total.

If it later emerges that an entry was incorrect, the route runs through a correction under Section 153 of the Fiscal Code. That is considerably more comfortable than a demand from the tax office, and with crypto assets the reporting duties of the platforms now feed back data that was not available before.

Writing off a total crypto loss: what to take away

1. Check your losing positions against the one-year period before it runs out. Everything you want to use for tax has to be sold or swapped within twelve months of acquisition. Sort your tranches by acquisition date and keep the overall gain for the year in view; a suitable tool for that is in the comparison of crypto tax tools.
2. Realise actively instead of hoping for recognition of a total loss. Sell or swap the holding concerned while a trading pair exists, and secure the record. Which platform still offers a market for the remainder is settled quickest through the exchange comparison.
3. File the tax return in the loss year too and secure your data independently of the exchange. Only a declared loss is assessed and stays available to carry forward, and only your own copy of the trading history survives an insolvency of the platform. For holdings you keep longer, your own custody is the safer place; we compare the devices for it in the hardware wallet comparison.

(As of August 19, 2026. This article is not investment advice. Prices and fee structures change; check the terms with the provider before you buy.)