Fees.

Every trade on every coin pays a 2.00% creator fee. Buys pay it on the BNB sent; sells pay it on the gross BNB out. The FeeRouter splits it in the same transaction:

2.00% of every traderoots ≥ 0.50% · operator ≤ 0.40%

0.50%Rootssaved as BNB in this coin's roots; burn coins to harvest

0.50%Rootstockbuys and burns $ZKBNB

0.20%Operatortreasury

0.80%Deployer's choiceme · a wallet · holders · a donation ring

0.50%  roots      → Roots.deposit(coin)          25% of the fee, never less
0.50%  rootstock  → rootstockPot: buy + burn $ZKBNB
0.20%  operator   → treasury                     10% of the fee, never more than 20%
0.80%  deployer's choice → creator / wallet / HolderRewards.pot / DonationRotator.pot

Bounds

The admin can change the shares, but only within limits written into the FeeRouter: the roots share can never go below 25% of the fee, the treasury share can never go above 20%, and the four shares must add up to 100%. The 2.00% fee itself is a constant in the Launchpad and in every coin contract, so nobody can change it.

$ZKBNB does not pay this fee. It was launched on Flap, not on zkBNB, and trades with Flap's 2% buy and 2% sell tax instead: half to the creator wallet, half to $ZKBNB holders in ZEC, after Flap's own fees. See Tokenomics.

Where each part goes

Roots are deposited into the coin's vault at once. If the admin has paused a coin's roots, that share goes to a fixed recovery address while paused. The BNB already in the roots is not affected. See Roots.
Rootstock collects in one pot for the whole platform and is spent on $ZKBNB buybacks, on Flap or PancakeSwap. The tokens bought go to the dead address. See the flywheel.
Operator BNB is sent to the treasury, a public address listed under Addresses.
Deployer's choice is sent to the creator or a named wallet on every trade, or added to the coin's holder-reward pot, or to its ring's pot.

If sending BNB to the creator or a wallet fails (a contract that rejects BNB, for example), it is held as pending for that address to withdraw later. A failed send never blocks a trade.

After graduation: the pair-tax

On PancakeSwap there is no Launchpad to take the fee in BNB, so the coin takes it in tokens. Every buy or sell through the pair leaves 2% of the tokens in the coin contract. Anyone can call sweepTax to swap them to BNB, which is then split exactly as above.

The keeper sweeps a coin once its tax is worth at least 0.02 BNB.
Sweeps by anyone else are limited to 1% of the pair's token reserve per block, so the swap cannot be sandwiched for more than dust.
Some aggregators and trading bots handle fee-on-transfer tokens poorly. Set enough slippage, or trade on zkBNB.

Other fees

Launching a token: 0.005 BNB, to the treasury.
Registering a donation cause: 0.002 BNB, to the treasury. It keeps spam out of the registry.
The shielded pool has no protocol fee. You pay gas.

These are the defaults. The current values are read from the contracts on Create and Donate.