FxPro Tax in Japan — Overseas FX/CFD Recordkeeping

Overseas FX/CFD gains are commonly discussed as miscellaneous income for Japan residents, while certain domestic OTC FX positions can follow a different framework. Product, residence, other income and personal circumstances matter. Ask the National Tax Agency or a qualified tax professional for the conclusion that applies to you.

Save trade history, realised P/L, commission, swap, deposits, withdrawals and the basis for yen conversion. Download CSVs before closing an account or changing platforms. A monthly folder is much easier to reconcile than a year-end hunt through multiple platforms and currencies.

A USD-denominated result still needs a defensible yen treatment. Record the relevant date and rate source consistently. Keep payment-provider records separately: a Wallet transfer, a card conversion and a trading result are not the same thing even when they appear close together in time.

‘It is overseas so it is not reportable’ and ‘small profit is always exempt’ are not reliable rules. Loss treatment, offsetting and carry-forward questions can differ from domestic FX. Bring the raw exports and your conversion notes to a professional rather than reconstructing them from memory.

Export monthly while account access is still routine. Keep a consistent JPY conversion source beside realised P/L, commission, swap and payment records. Waiting until year-end often means missing formats or closed statements.

Overseas FX/CFD gains are commonly discussed as miscellaneous income for Japan residents, and that is not automatically the same as domestic OTC FX separate taxation. This page is not tax advice.

If the classification is unclear, show the raw history to a tax professional rather than reconstructing from memory. Do not rely on claims that overseas trading needs no filing.

Broker CSV files are necessary, but a simple personal ledger still helps: trade date, instrument, realised result, commission, swap or admin fee, and the JPY rate source you used. That combination is easier to explain to a professional than a folder of unsorted screenshots.

Do not wait until you close the account. Export while login still works. This guide does not classify your income for you; it only argues for records that survive an ordinary filing season.