The rules, exactly.
Nothing here is discretionary. The engine follows these rules every hour, and every claim and payout is listed on each coin's page with its transaction.
One main coin, everything paired to it
The main coin is a pump.fun coin paired to $PUMP. Every other coin launched here is a pump.fun coin paired to the main coin: you buy it with the main coin and sell it back into the main coin.
The line is one level deep. Nothing is paired to a pad coin.
A 2% fee no launcher can pocket
Every coin, the main coin included, carries a 2% creator fee on every buy and sell, paid in whatever the coin is paired to. On pump.fun that fee belongs to the coin's creator of record. Here the creator of record is a treasury wallet that only the engine holds, so the launcher cannot claim it. The engine splits it by the rule below, every time, and every split is listed on the coin's page.
pump.fun charges its own protocol fee on top of this. That one is theirs.
Where the 2% goes
- 1% to key holders. Half of every coin's fee goes to holders of the Keys of the Universe NFTs, split by the number of keys each wallet holds and paid every hour. A key counts from the moment you hold it: there is no one-hour wait for keys.
- The main coin's other 1% (in $PUMP): 0.8% to holders of the main coin, 0.2% to the platform.
- A pad coin's other 1% (in the main coin): 0.4% to that coin's holders, 0.4% to holders of the main coin, 0.2% to the platform.
So holders of the main coin are paid in two currencies: $PUMP from its own trades, and the main coin itself from everything launched beneath it. Nothing goes to a launcher. Percentages are of each trade. The platform's 0.2% and the keys' 1% are taken once, where the fee is earned: what a pad coin sends up to the main coin is not cut a second time. It pays for the engine and for every payout's network fees.
Paid once an hour, to wallets that held an hour
At the top of every hour, each coin pays out everything it has reserved. A wallet is paid only if it has held the coin continuously for at least one hour at that moment.
- Selling or transferring out any amount restarts your hour. Buying more does not.
- Because payouts land on the hour, a new holder's first payout comes between one and two hours after buying.
- If nobody qualifies, nothing is lost: it carries over to the next hour.
- The bonding curve, the liquidity pool and the engine's own wallets are never counted as holders.
Your share: balance × time held
Each qualifying wallet's weight is its balance times a multiplier that grows the longer it holds without selling. Your share of the payout is your weight divided by everyone's.
| Held without selling | Multiplier |
|---|
Between those marks the multiplier rises in a straight line. The balance that counts is the lowest you held during the hour, so buying just before the payout earns nothing extra for that hour; it counts in full from the next one.
Splitting a bag across wallets does not help: weight is proportional to balance, and moving tokens out restarts the clock.
The small print that matters
- A wallet must hold at least 100,000 tokens to be paid.
- A share too small to be worth sending is not sent; it stays in the pot for the next hour.
- Payouts are sent to your wallet by the treasury. You do not claim anything and you pay no gas.
- How much is paid depends entirely on trading volume. An hour with no trades pays nothing.
- If the engine is offline at the top of the hour, the payout runs when it is back. What was reserved stays reserved.
- After a coin graduates to PumpSwap the same 2% keeps flowing, by the same rules.
Memecoins can go to zero. A payout is a share of fees already paid by traders, not a return on your purchase, and nothing here is financial advice.