Launch Tax

The launch tax is an extra quote-side fee that starts at a chosen rate in the launch block and decays to zero over a chosen number of blocks. It applies to buys.

The decay

It is linear in elapsed blocks: rate = start × (blocks − elapsed) / blocks, rounded down, and exactly zero once elapsed ≥ blocks.

start 2.00% over 10 blocks

  block  0    2.00%
  block  2    1.60%
  block  5    1.00%
  block  8    0.40%
  block 10    0.00%   and every block after

Where it goes

The reasoning is the same as for the anti-snipe fee: the creator chose the rule, so the proceeds are labelled as theirs everywhere rather than being absorbed by the protocol. What keeps that from becoming a toll is the cap, plus the 10% ceiling on total buy-side fees at block zero, plus the composer showing the total drag as one number.

Interaction with other rules

The launch tax, the anti-snipe extra fee and the creator fee all credit the same recipients and are summed into one creator accrual per swap. The protocol fee and the pot contribution are separate. All of it is taken from the quote side; see Rule Execution.