Fee routes

Accounts involved

Each account’s address is derived from fixed seeds (a PDAProgram derived address: an account address worked out from fixed words and keys. Only the program can sign for it; nobody holds a private key to it.), so the page can find it from its owner and a number, and nobody can swap in a look-alike.

Router and vault balances belong to program accounts that only the program can move. Before and after every action the program checks that the account still holds its rent plus everything owed and not yet paid.

Who can do what

• ActionWho signsRules the program enforces
• Create a routerThe coin’s mint authority or its Pump creator (the page and relay check this)Two to six distinct recipients, each above 0%, totalling exactly 100%. The fee wallet is fixed. The coin must be a valid SPL or Token-2022 mint.
• Deposit SOLAny walletAbove zero. Counted as a deposit and split like everything else.
• Collect Pump feesThe owner, or a keeper allowed to collectOnly when the coin’s Pump creator is this router. Refused if nothing arrives.
• Recognise sent SOLThe owner, or a keeper allowed to recogniseCounts SOL sent straight to the router address, labelled as external, not as trading fees.
• Pay a recipientThe owner, or a keeper allowed to paySends one destination everything it has earned and not been paid, only to its fixed address. Refused when nothing is due.
• Approve or revoke a keeperThe owner onlyOne keeper at a time, never the owner itself, with a permission set and an expiry slot in the future.
• Create a vaultAny walletTreasury and contributor addresses, a share up to 100% and a cap above zero. The fee wallet is fixed.
• Claim from a vaultEach recipient, for itselfAll or part of its own available share, to its own wallet. Nobody claims for anyone else.
• Change recipients, shares, caps or the fee of an existing accountNobodyThere is no edit, close, pause or rescue instruction. VEYDUCT can change the rate only for accounts created later, never above the cap.

A keeperA second wallet the owner approves to collect and pay out for them. It can only make payouts the router would make anyway, to the same fixed addresses, until its expiry slot. is a convenience, not a risk to the money: it can only make the payouts the router would make anyway, to the same fixed addresses, until its expiry.

Router math, with a worked example

Amounts on chain are lamportsThe smallest unit of SOL. 1 SOL is 1,000,000,000 lamports, so the 0.000005 SOL network fee is 5,000 lamports.: 1 SOL is 1,000,000,000 lamports.

The router never pays by deposit. It keeps one running total of everything received and works out each destination’s share of that total, so payouts can happen in any order and nobody is ever paid twice.

1. VEYDUCT fee on the totalfee = received × fee rate ÷ 10,000The rate, in basis pointsHundredths of a percent: 100 basis points is 1%, 10,000 is 100%. Programs use them to keep shares exact without decimals. (100 = 1%), is copied into the router when it is created.
2. Each recipient’s share of the restearned = (received − fee) × share ÷ 10,000Rounded down to the lamport. What rounding leaves over stays in the router and is never paid.
3. A payout sends the differencepaid now = earned − already paidThen that destination’s “paid” is set to its earned amount.

Example: You 50%, Team 30%, Ops 20%, 1% fee

1. 2 SOL of creator fees are collected.fee 0.02 · net 1.98You 0.99, Team 0.594, Ops 0.396. Team is paid 0.594.
2. Someone sends 0.1 SOL directly (recognised), and you deposit 0.4 SOL.received 2.5 · fee 0.025 · net 2.475You 1.2375, Team 0.7425 (so 0.1485 is due), Ops 0.495.
3. A keeper collects 1 SOL more and pays everyone.received 3.5 · fee 0.035 · net 3.465You 1.7325, Team 1.0395, Ops 0.693, VEYDUCT 0.035 in total.

Rounding: with shares of 33.33%, 33.33% and 33.34% on 1,000,001 lamports, the fee is 10,000 and the three earn 329,967, 329,967 and 330,066 lamports; 1 lamport stays in the router. Run the same steps in the Try it tab to see these numbers.

Vault math, with a worked example

1. The contributor’s gross grows with deposits, up to the capgross = min(deposited × share ÷ 10,000, cap)Worked out on the total deposited, like the router.
2. The VEYDUCT fee comes only out of the contributor’s grossfee = gross × fee rate ÷ 10,000; contributor = gross − feeThe default rate is 200 (2%). The treasury pays nothing.
3. The treasury gets everything elsetreasury = deposited − grossOnce the cap is reached, every later deposit goes to the treasury in full.

Example: contributor 20%, capped at 1 SOL gross, 2% fee

1. 3 SOL is deposited.gross 0.6 · fee 0.012Treasury 2.4, contributor 0.588, VEYDUCT 0.012.
2. 4 SOL more is deposited.gross min(1.4, 1) = 1 · fee 0.02Treasury 6, contributor 0.98 in total (0.392 from this deposit; the cap was reached at 5 SOL deposited), VEYDUCT 0.02.

Costs

VEYDUCT setup feeCreating a router or a vault carries no flat VEYDUCT fee.

None

VEYDUCT fee on a routerOf everything the router receives, paid to VEYDUCT’s fixed fee wallet like any other destination. Locked in at creation.

1% · max 2%

VEYDUCT fee on a vaultOf the contributor’s gross share only. Locked in at creation.

2% · max 3%

Router account rentSOL every Solana account must hold to exist, set by its size. It stays in the account; these programs have no instruction that closes one, so it is not refunded.504 bytes at mainnet rent of 5,080 lamports per byte plus 128 bytes per account.

≈ 0.0032 SOL

Vault account rent190 bytes, the same way.

≈ 0.0016 SOL

Pump creator vault rentOnce per router, on the first collection, paid by the wallet that collects.

≈ 0.00065 SOL

Network feePer transaction, one signature.

0.000005 SOL

Rent stays in the accounts: neither program has an instruction that closes a router or a vault, so it is not refunded. The review shows the exact rent and network fee read from mainnet before you approve.

Timing

• Nothing is paid automatically. Received SOL waits in the router until the owner or a keeper makes a payout; vault shares wait until each recipient claims.
• No lockups or schedules. Anything earned can be paid or claimed in the next transaction.
• Keepers expire. An approval ends at the Solana slotSolana’s clock: a new slot roughly every 0.4 seconds, about 216,000 a day. Programs use slot numbers for deadlines and expiries. you choose (about 216,000 slots a day); after that the program refuses the keeper until you approve it again.
• Reviews expire. The page asks you to review again after two minutes, or if the account changed in the meantime.

Edge cases and what can go wrong

FAQ