ArcaniumTrade tax
A launch can charge up to 9% on every trade, on top of the 1% base fee. It is optional, fixed at launch, and can never be changed afterwards. Most tokens set it to zero.
Where it goes
Wherever your reward mode sends fees. The token side of a trade is always burned, and the USDC side is split between you and the protocol — a tax simply makes both larger. Under Divium that means bigger payouts to holders; under Arcane, more buying and burning. It is a dial on the mechanism you already chose, not a separate revenue stream.
Why this is safe here and was not before
Taxed tokens have a bad reputation for a specific and correct reason. The usual implementation skims the token's own transfer. On Uniswap v3 a sell delivers its input to the pool as a transfer, and the pool then checks it received the amount it was promised — so a tax makes the pool come up short and every sell reverts. The buy still works. That is a honeypot, and it is why Arcanium refused to offer a tax on its v3 launches.
A v4 launch takes its fee in the hook, during the swap, through afterSwap. The pool always receives exactly what it was promised, so nothing breaks. The token's own transfers are completely untaxed — sending it to a friend, an exchange or a cold wallet costs nothing.
taxBps() on any older Arcanium token and it returns zero.What a trader pays
The tax plus the 1% base. A 5% tax means about 6% per trade. The 9% ceiling exists so the total can never exceed 10%, and it is enforced by the contract rather than the interface.
Quotes from outside tools do not include it, because it is charged inside the swap. Token pages here show the rate above the trade panel whenever it is not zero, so nobody meets it for the first time in their wallet balance.
Choosing a rate
Zero is the default and is right for most tokens: a tax makes yours more expensive to trade than its neighbours, and some aggregators rank or route taxed tokens worse. It earns its place when continuous burning or continuous holder payouts are the actual point of the token rather than a detail — in which case the tax is the engine, and a visible rate is part of the pitch.