NFT Reserve Requirements
Minting, holding, and offering NFTs for sale require XRP held in reserve. The reserve charges can add up quickly. Understanding the reserve requirements can help you choose the best approach for your business case.
Base Reserve
Your account must set aside a base reserve, currently 1 XRP. The base reserve XRP amount is subject to change. See Base Reserve and Owner Reserve.
Owner Reserve
For each object you own on the XRP Ledger, there is an owner reserve, currently 0.2 XRP. This is to discourage users from spamming the ledger with unnecessary data, and to encourage them to clean up any data that is no longer necessary. The owner reserve amount is subject to change. See Base Reserve and Owner Reserve.
For NFTs, the object does not refer to the individual NFTs, but to the NFTokenPage
objects owned by the account. NFTokenPage
objects can store up to 32 NFTs.
However, NFTs are not packed into pages to minimize space used. If you have 64 NFTs, it's not necessarily true that you have only 2 NFTokenPage
objects.
A good rule of thumb is to assume, on average, that each NFTokenPage
stores 24 NFTs. Therefore, you can estimate the reserve requirements for minting or owning N NFTs as (24N)/2, or 1/12 of one XRP per NFT.
The following table provides examples of how much the total owner reserve might be, depending on the number of NFTs owned and the number of pages holding them.
NFTs Owned | Best Case | Typical Case | Worst Case |
---|---|---|---|
32 or fewer | 0.2 XRP | 0.2 XRP | 0.2 XRP |
50 | 0.4 XRP | 0.6 XRP | 0.8 XRP |
200 | 1.4 XRP | 1.8 XRP | 2.6 XRP |
1000 | 6.4 XRP | 8.4 XRP | 12.6 XRP |
NFTokenOffer
Reserve
Each NFTokenOffer
object costs the account placing the offer one incremental reserve. As of this writing, the incremental reserve is 0.2 XRP. The reserve can be recovered by cancelling the offer. The reserve is also recovered if the offer is accepted, which removes the offer from the XRP Ledger.
NFTokenOffer
objects on behalf of your bidders to give them back their reserve. You can do this with NFTokenCancelOffer transactions.Practical Considerations
When minting, holding, and offering to buy and sell NFTs, the reserve requirements can add up quickly. This can result in your account going below the reserve requirement during a transaction. Going below the requirement can limit your ability to trade on the XRPL. See Going Below the Reserve Requirement.
If you create a new account, mint an NFT, and create an NFTokenSellOffer
on the XRP Ledger, that requires a minimum reserve of 1.4 XRP.
Reserve Type | Amount |
---|---|
Base | 1 XRP |
NFToken Page | 0.2 XRP |
NFToken Offers | 0.2 XRP |
Total | 1.4 XRP |
If you were to mint 200 NFTs and create an NFTokenSellOffer
for each, that would require as much as 43.6 XRP held in reserve.
Reserve Type | Amount |
---|---|
Base | 1 XRP |
NFToken Pages | 2.6 XRP |
NFToken Offers | 40 XRP |
Total | 43.6 XRP |
If the required reserves exceed the amount you are comfortable setting aside, consider using the mint-on-demand model to reduce the number of NFTs and offers you hold at any one time. For details, see Batch Minting.