display an activity tab, with the history of transactions made on the differents accounts
aggregate all kind of transaction, transfer, extrinsics, rewards...
For the love of god, please make it easy to do taxes for polkadot. Love the system, but the tax situation is unbearable. Alot of tax software do not support the parachains, or the polkadot wallets. If they do support the polkadot wallet, then it only pulls polkadot info from the relay chain and not from the parachains. Then when you transfer polkadot from one parachain to another it shows calculation errors in most tax software.