Field notes
Notes on cost basis, exchange exports, and preparing crypto tax gain estimates for Hong Kong investors.
Short practical pieces from desk work with Smart Crypto Calculator PC and the export files clients actually send.
What a clean Binance CSV still hides
A full Binance trade export looks complete until you compare it with the deposit ledger. Convert-small-balance dust, earn product …
Airdrops without a cost: how we leave them marked
Airdrops arrive without invoices. Some clients want them valued at the first tradeable print; others prefer to leave cost at zero and accept …
Reading a Hong Kong tax year against exchange UTC stamps
Exchange CSVs almost always stamp in UTC. Hong Kong local time sits eight hours ahead. A trade at 20:00 on 31 March UTC still falls inside …
Why internal transfers inflate DIY gain estimates
When a coin leaves Binance and arrives in a cold wallet the same afternoon, many DIY spreadsheets still treat the outbound leg as a sale. …