Fees

A launch charges three kinds of fee over its life. All of them are set by the configuration and can never change for a live launch.

Fee	When	Paid in	Goes to
Trading fee	Every buy and sell	Quote	Split between creator and partner
Migration	Once, at graduation	Quote	Split between creator and partner
Pool fees	Every swap after graduation	Either token	The Pina AMM tier’s LPs, protocol, and pool creator

Rates are parts per million (10_000 is 1%).

The trading fee

Rate over time

The rate starts at start_fee_rate when the launch activates and falls in a straight line to end_fee_rate over fee_decay_duration seconds:

elapsed = now - activation_time
rate    = end                                             if decay = 0 or elapsed >= decay
        = start - (start - end) * elapsed / decay         otherwise (integer division)

rate
 50% ┤●
     │  ●
     │    ●
     │      ●
     │        ●
  1% ┤          ●──────────────────────────
     └──────────┬───────────────────────── time
     activation 60 s

The decay exists to tax sniping. A bot buying in the launch block with a 50% opening fee gives up half its purchase; a person buying a minute later pays the end rate. The rate is computed from the cluster clock on every trade, so there is nothing to crank.

How a trade is charged

The fee is always taken from the quote side and always rounded up, in the curve’s favour.

Buy. quote_amount_in includes the fee:

fee = ceil(quote_amount_in * rate / 1_000_000)
net = quote_amount_in - fee            spent on the curve

If the buy reaches the migration price before using all of net, the launch completes and the buyer pays only for what the curve used: the program grosses the used quote back up (ceil(used * 1_000_000 / (1_000_000 - rate))), charges that, and leaves the rest in the buyer’s account.

Sell. The fee comes out of the proceeds:

quote_out = curve's quote for base_amount_in
fee       = ceil(quote_out * rate / 1_000_000)
received  = quote_out - fee

minimum_quote_out is compared with received, after the fee.

The split

creator_fee = floor(fee * creator_fee_share / 1_000_000)
partner_fee = fee - creator_fee

Both shares accrue on the Launch account (creator_fees, partner_fees) and stay in the launch’s quote vault, separate from quote_reserve, until claimed. Fees never back the curve: the reserve that prices trades excludes them.

The migration fee

At graduation, the program takes floor(quote_reserve * migration_fee_rate / 1_000_000) from the raised quote before seeding the pool, and splits it between creator and partner with the same creator_fee_share. Rounding dust that cannot be paired with base at the final price joins the migration fee. See Completion and graduation.

Claiming

Instruction	Signer	Pays
`ClaimPartnerFees`	The configuration authority	All accrued partner fees, to any quote token account
`ClaimCreatorFees`	The launch creator	All accrued creator fees, to any quote token account
`ClaimCreatorAllocation`	The launch creator	Base vested so far and not yet claimed

Claims work at every stage, before and after graduation, and fail with NothingToClaim when nothing has accrued. SetLaunchCreator hands the creator’s fee and allocation rights to a new address, for example a multisig or a revenue-sharing program.

pina-curve claim partner-fees --base-mint <MINT>   # signed by the partner
pina-curve claim creator-fees --base-mint <MINT>   # signed by the creator
pina-curve claim allocation   --base-mint <MINT>   # signed by the creator

Fees after graduation

A graduated launch trades on the Pina AMM, in the tier named by the configuration’s amm_config. The pool snapshots that tier’s rates when it is created:

the trade fee goes to liquidity providers, minus the tier’s protocol share;
the creator fee is paid to the pool’s creator in the quote token. The configuration’s pool_creator_mode makes that either the launch creator (0) or the partner (1).

Collect pool creator fees with the AMM’s CollectCreatorFees (pina-amm fees collect-creator --pool <POOL>). See the AMM’s fee guide.

Worked example

A configuration with a 50% → 1% decay over 60 seconds, a 50% creator share, and a 2% migration fee:

Event	Fee	Creator	Partner
Buy 1 SOL at activation	0.5 SOL	0.25 SOL	0.25 SOL
Buy 1 SOL 30 s later	0.255 SOL	0.1275 SOL	0.1275 SOL
Buy 1 SOL after a minute	0.01 SOL	0.005 SOL	0.005 SOL
Graduation with an 85 SOL reserve	1.7 SOL	0.85 SOL	0.85 SOL