Austria treats bitcoin in separate wallets as distinct tax units

Bitcoin investors commonly distribute holdings across several storage locations—hardware wallets, exchange accounts, and additional addresses. Austrian cryptocurrency regulation addresses this by calculating rolling average prices on a per-address basis, rather than pooling all holdings of the same asset together.

When an investor holds bitcoin in two separate wallets, each can carry a different tax-relevant average price. The two accounts do not automatically consolidate into a shared acquisition cost simply because they belong to the same person. What matters for tax calculation is either the specific blockchain address or, where applicable, the individual wallet itself.

For bitcoin purchased sequentially and stored at the same address, acquisition costs do accumulate into a pooled figure. If an investor buys 0.1 BTC at 30,000 euros and later 0.1 BTC at 30,000 euros at the same address, the combined holding of 0.2 BTC carries total acquisition costs of 6,000 euros, yielding a tax-relevant average price of 30,000 euros per bitcoin. When part of that stack is later sold, the average price applies to calculate acquisition costs.

Austrian rules permit an additional flexibility: where bitcoin resides in a cryptocurrency wallet using multiple blockchain addresses, the rolling average can be computed across all units within that entire wallet rather than by individual address. However, once a wallet provider opts for this wallet-wide method, the choice becomes binding for subsequent income tax assessment and cannot be changed retroactively on a tax return.

Transferring bitcoin between one's own wallets typically does not trigger a taxable event, as the coins are neither exchanged for other assets nor currency. The acquisition cost history remains relevant, though—investors must maintain clear documentation showing which bitcoin moved with what historic costs. The blockchain record supports this tracking.