Getting two identical 1099-DA forms can look odd, but the fix is more straightforward than you might think: first compare the differences between the two forms, then contact the platform that issued t

If you bought the same coin in batches and now want to sell only a portion, the platform won't automatically select the most cost‑effective batch—it follows a default rule. Different rules calculate y

When your exchange shows a cost price of zero, it usually does not mean your assets are gone. It simply means the system reset the cost value under certain conditions—for example, after you used margi

You buy a coin in several batches, but the platform shows an average cost that doesn't match your mental math. In most cases, you are confusing "price averaging" with "cost averaging."For example, you

Different platforms handle trading fees in two main ways: some deduct fees from the cryptocurrency you receive when buying, while others deduct separately from your account balance. In the first case,

After transferring crypto across platforms, your cost basis often disappears. It's not that the platform lost your data — it's because cost basis records on most platforms don't follow the coins. An e

Your realized PnL is positive but your account balance is going down. In most cases, the platform is not miscalculating — you are just treating "PnL" and "balance" as the same thing. In reality, the r

If the unrealized P&L shown on your screen doesn't match what you expected, it's almost never a platform calculation error. More likely, the price you are using to do the math is simply not the same p

A crypto-to-crypto swap means you trade Coin A for Coin B. Even though no fiat currency changes hands, there is still a transaction price. The exchange's order book records a specific "exchange rate"

You receive a batch of airdrop tokens in your wallet. The exchange or on-chain display shows a cost basis of zero. If you sell them right away, two things happen for tax purposes: first, the sale is t

The core issue with auto-compounding staking rewards is that each reinvestment is a separate "reward received" event. In most cases, the reward is treated as ordinary income for tax purposes, and each

USDT to USDC, with the price bobbing a few cents around $1 — you might feel like it's the same as doing nothing. But under the tax laws of most countries, a stablecoin swap counts as a "sale" and a "b

CSV files exported from exchanges usually miss "internal transfers". It's not that the platform hides them on purpose, but the fund transfer records on Binance, or the funding bills on OKX, are separa

API sync failed, so you switch to manually importing CSV, and end up importing a bunch of duplicate transactions—this is one of the most common error scenarios in tax software like Koinly, CoinLedger,

CSV files exported from different exchanges use at least three different time formats. Binance uses UTC+0, OKX annual statements default to UTC+8, and some exchanges use the local time zone you select

When you pay trading fees with a platform token, you need to track two cost calculations. First, the platform tokens you spend are like a sale — that can create a capital gain or loss. Second, whether