Fees and costs

All the fees that touch a tonch Jetton — launch fee, curve fee, graduation cut, and gas estimates.

This page enumerates every fee a deployer or trader pays. Numbers are exact for the current factory configuration (factory address: see Reference / Contracts).

Launch fee — 3 TON

Paid once by the deployer, at launch, to the factory. Covers:

• Gas for deploying the curve contract, Jetton master, LP locker.
• Storage rent prepayment for the new contracts.
• The factory’s own gas overhead.

The fee is hard-coded in the factory’s state and visible via get_factory_config → launch_fee. It cannot be changed per launch.

If the launch transaction reverts after the factory accepts the message, the fee is not refunded. If the transaction never sends (wallet refuses, RPC timeout), no funds move.

Curve trading fee — 1%

Applied to every buy and sell on the bonding curve. Stored in the factory state as curve_fee_bps = 100 (100 basis points = 1%).

• On buy: of the TON sent by the buyer, 1% is deducted before the curve math computes Jettons out. The buyer gets fewer Jettons than the pre-fee price would suggest.
• On sell: of the TON the curve would owe the seller, 1% is deducted before the seller receives it. The seller gets less TON than the pre-fee price would suggest.

The fee accrues in the curve contract’s accumulated_fees state field. It does not move until the deployer triggers op::sweep_fees after graduation.

For a curve that fills with moderate volume, the deployer collects roughly 1% of the cumulative TON traded — for a 1,000 TON curve, that’s about 10 TON, plus any extra volume from sells (which also pay the fee).

Graduation treasury cut — 10%

Applied once at graduation, to the curve’s accumulated TON. Stored in params.fc as graduation_treasury_cut_bps = 1000 (1000 bps = 10%).

treasury_cut = real_ton × 10%  ≈ 100 TON (for a 1,000 TON graduation)

The cut is sent to the protocol treasury address (visible on the factory’s get_factory_config).

The remaining 90% (≈ 900 TON) seeds the DeDust pool’s TON side. Combined with the 200M AMM-reserved Jettons, these form the initial DeDust pool reserves.

DeDust trading fees — variable

After graduation, all trading happens on DeDust v2. DeDust applies its own per-pool fee (typically 0.05%–0.30% depending on the pool’s volatility configuration). This fee goes to DeDust LPs and DeDust’s own protocol cut, not to tonch.

tonch does not collect any fee on post-graduation trades. The protocol’s revenue from a token is bounded by the 3 TON launch fee + the 10% graduation cut.

Gas estimates

These are rough estimates; actual gas depends on TON validator rates at the time.

Action	Approximate gas
Connect wallet (TonConnect)	0
Buy on curve	0.05–0.10 TON
Sell on curve	0.10–0.15 TON (TEP-74 transfer + curve response)
Launch	0.5–0.7 TON (separate from the 3 TON fee)
Dev-buy	0.05–0.10 TON
Graduate (keeper-triggered)	~0.5 TON, paid by the keeper, not by the deployer
Sweep fees (deployer, post-graduation)	0.05 TON
DeDust trade	DeDust’s standard gas (~0.2 TON)

When you initiate a transaction, tonch’s frontend pads the value with a small gas buffer so the action lands. Any unspent gas refunds back to your wallet.

Worked example

A deployer launches a token, dev-buys 5 TON, and the token graduates after total cumulative trading volume of 1,200 TON (some buying pressure followed by some selling). Outflows:

• Deployer pays: 3 TON (launch) + 5 TON (dev-buy) + ~0.7 TON (gas) = ~8.7 TON out.
• Deployer gets back at graduation (sweep fees): 1% of 1,200 TON cumulative volume = ~12 TON in claimable fees.
• Plus: the deployer’s dev-bought Jettons, now tradeable on DeDust.

Net: deployer paid ~8.7 TON, claimed ~12 TON in fees, owns whatever Jetton position the dev-buy bought (free option on the post-graduation price).

The protocol’s revenue from this token: 3 TON launch fee + 100 TON graduation cut = 103 TON.

The DeDust pool’s reserves: 900 TON + 200M Jettons. LP locked permanently.