Setting aside what you will owe in tax
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 6 min
In short
The year a gain arises and the time you pay tax on it are not the same. If prices fall or the money gets spent in between, you can find yourself short. This page states no rates or calculation methods — confirm the specifics with National Tax Agency materials and a tax professional.
Key points
- There is a gap between when a taxable event occurs and when payment is due
- Holding the tax money in crypto means it may be worth less when the bill arrives
- Swaps and payments, not only sales, can count as taxable events
- Without transaction and cost-basis records you cannot compute the right figure at all
Definition
The obligation created by taxable transactions, and setting aside the money to meet it.
The easily missed point is timing: the liability arises when the gain occurs, but payment comes later. A gain in the middle of one year is paid for in the next. If prices fall in between and your holdings are worth less than the bill, the shortfall has to come from somewhere else. Stories of a big gain one year and a painful tax bill the next, after a sharp decline, recur regularly.
The other trap is the scope of taxable events. Assuming only conversions to yen count can diverge from reality: swapping one crypto asset for another, paying for something in crypto and receiving certain kinds of compensation may all fall within scope depending on treatment. That a liability can arise without any yen changing hands is exactly what makes the funding problem awkward. Check the National Tax Agency's published materials for the specifics.
What you can do in practice is limited but real. One: at the time you carry out a taxable transaction, set the corresponding money aside in a form whose value does not move. Two: keep continuous records of transactions and cost basis. Without records you cannot compute what is owed, and you end up reassembling history from exchanges later — some of which retain it only for a limited period.
Computing the figure, and deciding which treatment applies to your situation, is professional territory. This site states no rates, deductions or calculation methods. If you trade frequently, use several exchanges or use offshore operators, talking to a tax professional early is worth it.
Watch out for
- · This is not tax advice and states no rates, deductions or calculation methods
- · Check the National Tax Agency's current materials for which transactions are in scope and how to calculate
- · Take anything requiring individual judgement to a tax professional
Frequently asked questions
Can I keep the tax money in crypto?
Nothing forbids it, but a lower price at payment time leaves you short. The structure is that the amount owed is fixed in yen while the asset you plan to pay with is not.