> For the complete documentation index, see [llms.txt](https://help.enterprise.ledger.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.enterprise.ledger.com/help-center-v2/reference/networks/sui.md).
# Sui (SUI)
Sui on Ledger Enterprise: the minimum stake, validator choice, and how quickly unstaked assets return.
## How Sui differs
Sui stores everything as an **object**. Each object has its own identifier, its own type, and an owner. Your coins are objects. A staking position is an object too.
This is a third model, distinct from the two most readers already know:
| Model | How a balance is held |
| ------------------ | --------------------------------------------- |
| Bitcoin, UTXO | A set of unspent outputs, carrying value only |
| Ethereum, Accounts | A number recorded against an address |
| Sui, objects | Typed objects, each owned by an address |
One consequence shows up in this product. A staking position is a single object, so it cannot be partly withdrawn. Sui splits the object in two instead, and returns one part.
For the protocol itself, see the [Sui documentation](https://docs.sui.io/).
## Token coverage
Ledger Enterprise supports **SUI and Sui tokens**.
A token Account can exist only for a token in Ledger's asset catalog. See [**Networks and tokens in your Workspace**](/help-center-v2/reference/networks.md#networks-and-tokens-in-your-workspace).
A Sui token is not a contract, as it would be on Ethereum. It is a native object type, identified by its **coin type**. There is no token standard to check against, because tokens are part of the protocol.
A token Account holds one coin type, and attaches to a parent Account.
## Staking
| Detail | Value |
|---|
| Minimum stake | 1 SUI |
| Exit action | Unstake |
| Return after unstaking | Immediate |
### Choosing a validator
No validator is pre-selected. You can search the full list and select any validator. The list puts the largest total staked first, and shows each validator's icon, name, annual percentage yield (APY) and total staked.
**The APY shown is before the validator's commission.** What you receive is lower by that commission. Yields vary and are not guaranteed by Ledger.
Each stake is its own object, so two stakes with the same validator can show as two rows.
A validator that becomes inactive stops producing rewards. Unstaking and delegating elsewhere restarts them.
A validator that performs badly can be punished under Sui's tallying rule. For the epoch of the punishment, the validator receives no rewards, and its stakers receive none either. This rule is from the [Sui documentation on staking](https://docs.sui.io/concepts/tokenomics/staking-unstaking), checked on 9 October 2026.
### How rewards are paid
**Rewards are not paid out as separate transfers.** No incoming transaction arrives, and there is nothing to claim.
A Sui **epoch** lasts 24 hours. This figure is from the [Sui documentation on staking](https://docs.sui.io/concepts/tokenomics/staking-unstaking), checked on 7 October 2026. At each epoch boundary the staking pool's exchange rate appreciates, so your position grows in place.
A stake accrues rewards only for the epochs it was active for in full. A position opened part way through an epoch accrues nothing for that epoch.
You see the accumulated reward when you unstake. Principal and reward return together.
### Unstaking
**Your balance and rewards come back immediately.** There is no waiting period. Once the unstake Request is approved and executed, you can send the assets.
You can unstake part of a position. Sui does this by splitting the position in two, then returning one part. **Both parts must keep at least 1 SUI.**
So from a 10 SUI position you can unstake:
* Any amount from 1 to 9 SUI, which leaves the rest staked
* The full 10 SUI, which closes the position
You cannot unstake 9.5 SUI from a 10 SUI position, because that would leave 0.5 SUI staked.
## Testnet
Ledger can also enable **Sui Testnet** for a Workspace. Staking is available on it, as on Sui. Its assets have no market value. See [**Testnets**](/help-center-v2/reference/networks.md#testnets).
## Related
* [**Staking**](/help-center-v2/guides/staking.md)
* [**Networks**](/help-center-v2/reference/networks.md)
---
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