# Aptos SRB

APTSRB is a benchmark representing the mean, annualized staking rate across all active Aptos validators.

APTSRB is calculated and published by Staking Rewards via the[Aptos Profile](https://www.stakingrewards.com/asset/aptos) and [Data API](https://www.stakingrewards.com/data-api).

> **TL;DR:** Aptos staking rewards are determined by a protocol-set reward rate per epoch multiplied by the number of epochs per year (\~2-hour epochs). Validator-level rates are adjusted by commission and proposal performance. Slashing is not currently implemented.

$$
APTSRB = rrpe \* epy
$$

<table data-full-width="false"><thead><tr><th width="141">Formula key</th><th width="158">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>rrpe</td><td>Reward rate per Epoch</td><td>This is a value determined by the protocol, and it represents how many tokens a validator gets per staked APT, per epoch (assuming 100% performance)</td></tr><tr><td>epy</td><td>Epochs per Year</td><td>How many epochs there are in a year. Currently, epchs last approximately 7200s (2 hours)</td></tr></tbody></table>

***

#### Slashing

1. Currently, slashing is not implemented in the Aptos Network

***

### APT Validator Staking Reward Rate: APTSRB(v)

Staking Rewards calculates the APTSRB for each validator based on their individual performance and commission rate.

$$
APTSRB(v) =  APTSRB \* (1 - c) \* p
$$

<table data-full-width="false"><thead><tr><th width="150.33333333333331">Formula key</th><th width="187">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>c</td><td>Commission</td><td>The fee imposed by a specific validator to its delegators.</td></tr><tr><td>p</td><td>Performance</td><td>This metric is determined by the ratio between number of successful proposals by the validator and the total number of proposals made by the validator</td></tr></tbody></table>

***

#### Observation Period:

1. The APTSRB is determined based on the latest generated block at the evaluation point.
2. This data is then annualized for a comprehensive year-long projection.

#### Calculation

The calculation happens every 2 hours and is immediately published via [Data API](https://www.stakingrewards.com/data-api).

#### Limitations

1. APTSRB employs a 365-day convention for annualizing current slot times. This convention remains consistent and does not accommodate adjustments for leap years.

### APT Real Reward Rate: APTSRB^R

The real reward rate calculates the APTSRB adjusted for inflation in the network.

$$
APTSRB^R=1 +APTSRB/(1+ir) -1
$$

<table data-full-width="false"><thead><tr><th width="141">Formula key</th><th width="158">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>ir</td><td>Inflation Rate</td><td>The annual rate at which supply increases. This value is equal to the annual emissions.</td></tr></tbody></table>

***

### Other Aptos metrics calculated by Staking Rewards:

<table data-full-width="false"><thead><tr><th width="212.99999999999994">Metric</th><th>Description</th></tr></thead><tbody><tr><td>Delegated Tokens</td><td>The number of APT tokens delegated to validators.</td></tr><tr><td>Self Staked Tokens</td><td>The number of APT tokens staked by validators directly.</td></tr><tr><td>Staking Wallets</td><td>Total number of unique delegations onchain. It doesn't distinguish based on unique delegator addresses.</td></tr><tr><td>Fee Revenue</td><td>Annualized transaction fee revenue in USD, calculated as daily transaction fees multiplied by 365 and the current APT price.</td></tr></tbody></table>

#### References:

* [Aptos Documentation](https://aptos.dev/en/network/blockchain/staking#validation-on-the-aptos-blockchain)
* [Staking Rewards APT profile](https://www.stakingrewards.com/asset/aptos)

***

:bar\_chart: [Calculate your APT Staking Rewards](https://www.stakingrewards.com/calculator?asset=aptos)

:gear: [Access historic Aptos Staking Data via API](https://www.stakingrewards.com/data-api)

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Last updated on 03/12/2026
```


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