Similar to other digital currencies, all ndau transactions are subject to a small fee that supports the operation of the ndau network. These fees exist to provide incentives to node operators and to improve network robustness by discouraging transaction spamming.
Some of these transaction fees are variable. For example, the fee for a Transfer transaction is 0.1% of the amount of ndau being transferred (0.005 ndau minimum, 0.5 ndau maximum).
Fees are defined by a published fee schedule that is controlled by the BPC. In some cases, a fee’s value may be determined by a formula based on the fields in a transaction rather than being a scalar value. An address must have a sufficient balance to pay for the transfer fee and the amount being transferred. Accrued but uncredited EAI is not available for a transfer transaction, nor are any incoming transfers whose recourse periods have not expired and any staked amounts.
Certain service fees are also deducted from earned EAI. These EAI service fees are used to fund the continuous growth and operation of the ndau ecosystem
Here are examples of the specific fees incurred when a user completes common tasks in the ndau wallet app:
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1) I’m sending ndau to an account.The following fees will be deducted from the Sending account:
- Transfer fee (0.1% of amount, 0.005 ndau minimum, 0.5 ndau maximum)
- SIB fee (a variable % of amount if SIB is currently in effect)
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2) I’m creating a new account to receive ndau.
The first deposit received by a newly created account will cause the following fees to be deducted from the Receiving account:
- Delegate fee (0.005 ndau)
- SetValidation fee (0.005 ndau + 0.0001 ndau/byte)
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3) I’m locking an account.
The following fees will be deducted from the account being locked:
- Lock fee (0.005 ndau)
- Start Countdown Timer fee (0.005 ndau)
- SetRewardsDestination fee (0.005 ndau) *
* Only incurred if the user chooses to have earned EAI sent to a different account.
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4) I’m starting the countdown timer on an account that is already locked.
The following fee will be deducted from the locked account that is starting the countdown timer:
- Start Countdown Timer fee (0.005 ndau)
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Below is a list of all fees for all transaction types. The values for these fees are not fixed and will be updated accordingly by the BPC as the value of ndau grows.
| Transaction Type | Fee Amount |
|---|---|
| SetValidation | 0.005 ndau + 0.0001 ndau/byte |
| ChangeValidation | 0.005 ndau + 0.0001 ndau/byte |
| CreateChildAccount | 0.005 ndau + 0.0001 ndau/byte |
| ReleaseFromEndowment | 0.1% of amount, 0.005 ndau minimum, 0.5 ndau maximum |
| Transfer | 0.1% of amount, 0.005 ndau minimum, 0.5 ndau maximum |
| TransferAndLock | Transfer fee + 0.005 ndau |
| ChangeRecoursePeriod | 0.005 ndau |
| Delegate | 0.005 ndau |
| Lock | 0.005 ndau |
| Notify (Start Countdown Timer) | 0.005 ndau |
| CreditEAI | 0.005 ndau |
| ClaimNodeReward | 0.005 ndau |
| NominateNodeReward | 0.005 ndau |
| CommandValidatorChange | 0.005 ndau |
| RecordPrice | 0.005 ndau |
| SetSysvar | 0.005 ndau |
| SetRewardsDestination | 0.005 ndau |
| Unstake | 0.005 ndau |
| Issue | 0.005 ndau |
| RegisterNode | 1 ndau |
| UnregisterNode | 1 ndau |
| Stake | 1 ndau |
See also: SIB fees and EAI service fees