Gas and Fee Structure on zkBNB
caution
This is a living document and is susceptible to changes. Gas and Fee charges may differ.
Fee Structure on zkBNB
There are three types of fees associate with using zkBNB
- Protocol Fees
- Gas Fees
- Marketplace Fee
Fees are additional amounts that a user pays on top of a base price of an asset. These can be imposed by various entities. The following table illustrates the fees on zkBNB.
| Entity | Type of Fee | Amount | Example |
|---|---|---|---|
| zkBNB | Protocol | 2% of every NFT trade | Alice lists an NFT for 1 ETH on a marketplace. When Bob purchases this NFT, he would need to pay 1.02 ETH where 1 ETH goes to Alice and 0.02 ETH goes to zkBNB. |
| 3rd parties builds marketplace via zkBNB | Maker Marketplace Fee | "Decided by 3rd platforms" | Alice wishes to receive 0.99 ETH for her NFT assets and lists it on a marketplace that imposes a maker fee of 1%. Therefore, the price that the asset will be listed for on the marketplace is 1 ETH. |
| 3rd parties builds marketplace via zkBNB | Taker Marketplace Fee | Decided by 3rd platforms | Alice wishes to receive 1 ETH for her NFT assets and lists it on a marketplace. Bob wishes to buy the asset from a different marketplace that imposes a taker fee of 1% and marketplace fee is 1.5% and will therefore be presented with a buying price of 1.025 ETH inclusive of the taker marketplace fee. |
| Collection royalty recipient, ie. owner of an NFT smart contract | Royalty | Decided by Creators | Alice mints a collection of assets on zkBNB and sets a 5% royalty for every asset in the collection to go to her. Bob owns an asset from Alice's collection and sets the sale price of 1 ETH. The marketplace on which he lists the asset will display a selling price of 1 ETH. When Ciaran comes along and buys this asset, he pays 1.05 ETH, 1 ETH of which goes to Bob, and 0.05 ETH goes to Alice. |
Different transaction on zkBNB
This different transactions that can take palce on zkBNB are:
- Transfer token
- Mint NFT
- Withdraw BNB(other token, balance>=0)
- Withdraw NFT
- Full exit
- Full exit NFT
Gas Costs on zkBNB
In the table given below, we list the averge gas used and price in BNB for each of these transaction types on zkBNB.
| L2 Gas used | Price(BNB) | |
|---|---|---|
| Transfer token/NFT | 6061 | 0.00002 |
| Mint NFT | 10000 | 0.000033 |
| Withdraw token | 60606 | 0.0002 |
| Withdraw NFT | 242424 | 0.0008 |
| Active account | 45455 | 0.00015 |
| Full exit token/NFT | 75758 | 0.00025 |
| Deposit | / | 0 |
| NFT atomic match | / | 0 |
| Create collection | 12121 | 0.00004 |
| Cancel offer | 6061 | 0.00002 |