Tax API

Endpoints

• GET/v1/tax/trades

  Filled spot, futures and options trades.

• GET/v1/tax/transfers

  Deposits, withdrawals and internal transfers.

• GET/v1/tax/fees

  Trading fees, funding payments, withdrawal fees.

• GET/v1/tax/cost-basis

  Per-lot cost basis (FIFO, LIFO, HIFO, ACB).

• GET/v1/tax/realized-pnl

  Realized PnL grouped by tax year and lot.

• GET/v1/tax/forms/8949

  Pre-filled US Form 8949 line items.

Sample response

{
  "trade_id": "8a3f12e0-2c7a-4c7d-9e0f-3a1b9d6f4c01",
  "ts": "2026-04-12T14:33:21Z",
  "symbol": "BTC-USDT",
  "side": "buy",
  "qty": "0.45000000",
  "price": "67412.50",
  "fee": "0.00045000",
  "fee_asset": "BTC",
  "cost_basis_usd": "30335.62",
  "tax_lot_id": "lot_2026_00824"
}