How losses are treated
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 7 min
In short
Crypto income is in principle miscellaneous income, and losses in that category cannot be offset freely against other kinds of income. What you can do with a loss depends on its classification and on rules that change. Check the National Tax Agency's guidance and consult a tax professional about your own case.
Key points
- Because the income is miscellaneous, losses behave differently from, say, listed share losses
- Netting within a single year and carrying a loss across years are separate questions
- Losses from a hack or an exchange failure need separate consideration from ordinary trading losses
- A loss does not automatically mean there is nothing to file
Definition
The question of what tax effect a negative result from crypto activity has. In Japan the starting point is that the income is in principle miscellaneous income.
The first thing to fix is that a crypto loss is not simply 'like a share loss'. Listed shares have their own dedicated regime; crypto income is in principle miscellaneous income, so that reasoning does not carry over. A lot of online commentary blurs the distinction, which is where the misunderstandings start.
Second, netting gains and losses within a single year and carrying an unused loss into later years are two separate questions. Both are determined by the rules attached to the income classification, not by intuition.
Losses that do not come from trading are different again. Coins drained by a hack, an exchange failure or a withdrawal freeze, and funds sent to a scammer, raise questions about when and how the loss is recognised that a simple price-decline loss does not. Keeping evidence — transaction hashes, notification emails, a copy of any police report — gives a professional something concrete to work from.
Finally, a losing year does not necessarily mean no filing. Your other income, and the treatment you want available in later years, may require a step to be taken. This page will not assert what is or is not possible for you. Loss treatment is particularly exposed to amendments, so take the current position from the National Tax Agency's guidance and the decision from a tax professional.
Watch out for
- · This page is a general orientation, not tax advice
- · Do not take 'you can carry losses forward like shares' at face value — the income classification differs
- · Loss treatment is affected by amendments; confirm with the National Tax Agency and a tax professional
Frequently asked questions
My exchange failed and I cannot withdraw. Is that a deductible loss?
The treatment can differ between a withdrawal freeze and the point at which recovery is legally established as impossible. Amounts here tend to be large, so gather the paper trail and take it to a tax professional rather than deciding yourself.