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Staking rewards & tax — the two-stage picture

The part people find confusing: a staking reward is taxed once when you RECEIVE it (at its yen value that day), and that same value becomes the coin's COST BASIS — which is subtracted when you later SELL. So the appreciation is not taxed twice. This page shows exactly how, with a calculator.

Educational only — a simplified illustration of the general Japanese treatment (crypto income is typically miscellaneous income, taxed on a combined-progressive basis). It is not tax or investment advice; consult a licensed tax professional for your own situation.
The key idea

Income at receipt + gain at sale always adds up to the final sale value — because the value you were already taxed on at receipt is given back to you as cost basis at sale. You are taxed on the total appreciation exactly once.

🧮 Try it
Examples:
1When you RECEIVE the reward
Income now (taxable)
¥5,000
100 × ¥50
→ becomes the cost basis
¥5,000
held against this coin until you sell
2When you SELL
¥8,000(sale)−¥5,000(cost basis)=¥3,000(gain — taxable)
Total income taxed across both stages
¥5,000(receipt)+¥3,000(sale)=¥8,000
This equals the final sale value (¥8,000) — the appreciation is taxed once, not twice.
Optional: your combined tax rate (incl. resident tax)
%

Why it isn't double taxation

Imagine the coin's whole gain from ¥0 to the sale price. Without cost basis you'd be taxed on the entire sale value. But you were ALREADY taxed on the value at receipt — so at sale you only add the piece above it. The two pieces tile the whole bar exactly once:

Total taxed = full sale value
taxed at receipt
taxed at sale

Green = the value already taxed when you received it (also your cost basis). Blue = only the extra rise, taxed at sale.

❓ “Am I taxed twice — at receipt and again at sale?”

No. The value taxed at receipt becomes your cost basis, and cost basis is subtracted at sale. At sale you are only taxed on the change since receipt (a gain adds; a loss subtracts). Add the two stages together and it equals the total appreciation — counted once.

Points to keep in mind

  • Receipt value = fair market value in yen on the day you could dispose of the reward. Keep records of amount, date and price.
  • With multiple receipts or existing holdings, your per-coin cost basis is blended using the total-average or moving-average method — the same principle, just averaged across lots.
  • Both the receipt income and the sale gain are, in general, miscellaneous income taxed on the combined-progressive basis. Losses within crypto can net against crypto gains, but generally not against salary or other income, and generally do not carry to the next year.
  • Swapping the reward for another crypto, or spending it, is also a disposal — the same 'proceeds − cost basis' applies at that moment.
Educational illustration of the general Japanese tax treatment of staking rewards, as commonly understood. Rules and interpretations change and individual circumstances differ; this is not tax or investment advice. Verify with the National Tax Agency guidance and a licensed tax professional.