DEX swap cost basis: why the daily index price is not the price you got
Crypto tax software prices DEX swaps with daily index averages that exclude DEX data. What Form 1099-DA changes for 2026, and why the swap record is stronger.
Category · DEX & DeFi
DEX & DeFi
Swap activity, liquidity pools, and on-chain trading across EVM chains and Solana.
Latest in DEX & DeFi
Read any wallet's token portfolio across chains without RPC calls
Use one SiftingIO endpoint to pull native and ERC-20 balances on Ethereum, Base, and Arbitrum, then value them with consensus snapshots instead of manual on-chain math.
Streaming on-chain DEX swaps over WebSocket without reconnect bugs
Build a resilient WebSocket subscriber for the SiftingIO dex product: chain:PAIR symbols, the auth handshake, last-cached-then-live emits, and a 60s ping.
How to Get the Latest Price and Volume From a DEX Without the On-Chain Math
A DEX has no last-price field. Getting a usable price and volume means pool math, decimals, token ordering, and swap-log parsing behind an RPC node. Here is what that takes and the one-call alternative.