> For the complete documentation index, see [llms.txt](https://docs.stakingrewards.com/staking-data/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/islamic-coin-srb.md).

# Islamic Coin SRB

Learn how Islamic Coin staking rewards are calculated. ISLMSRB is the governance-set HAQQ reward coefficient net of community tax: bonded ISLM × reward coefficient is minted per year and distributed t

ISLMSRB is a benchmark representing the mean, annualized staking rate across all active Islamic Coin validators.

ISLMSRB is calculated and published by Staking Rewards via the [Islamic Coin Profile](https://www.stakingrewards.com/asset/islamic-coin) and [Data API](https://www.stakingrewards.com/data-api).

> **TL;DR:** HAQQ's coinomics module mints bonded ISLM × reward coefficient per year, and the community tax is deducted before distribution. Divided by bonded ISLM, the rate is simply the reward coefficient net of community tax: `ISLMSRB = rc/100 × (1 − ct)` (3.0% × 0.9 = 2.70% as of September 2026). Validator-level rates factor in performance and commission as in ATOMSRB.

{% hint style="info" %}
The calculations are derived from the ATOMSRB documentation, serving as the foundational reference to ensure the accuracy of relevant metrics.

For more information visit the [ATOMSRB docs](https://docs.stakingrewards.com/staking-data/methodologies/cosmos-hub-srb).
{% endhint %}

{% content-ref url="/pages/aKwZW2LPk4OF6A8oB6OI" %}
[Cosmos Hub SRB](/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb.md)
{% endcontent-ref %}

### ISLM Staking Rewards Rate: ISLMSRB

$$
ISLMSRB = rc /100 \*(1-ct)
$$

<table><thead><tr><th width="145">Formula Key</th><th width="176">Metric Name</th><th>Description</th></tr></thead><tbody><tr><td>rc</td><td>Reward Coefficient</td><td>Governance parameter of the HAQQ coinomics module: the annual mint as a percentage of total bonded ISLM. 3.0 since governance proposal 42 (passed 12 November 2024).</td></tr><tr><td>ct</td><td>Community Tax</td><td>Community Tax is the percentage of inflation rewards and fees that are sent to the community pool at each block.</td></tr></tbody></table>

***

### ISLM Validator Staking Rewards Rate: ISLMSRB(v)

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

$$
ISLMSRB(v) = ATOMSRB(v)
$$

{% embed url="<https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb#atom-validator-staking-rewards-rate-atomsrb-v>" %}
ATOM Validator Staking Rewards Rate
{% endembed %}

***

### ISLM Real Reward Rate: ISLMSRB^R

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

$$
ISLMSRB^R = ATOMSRB^R
$$

{% embed url="<https://docs.stakingrewards.com/staking-data/methodologies/cosmos-ecosystem-srb/cosmos-hub-srb#atom-real-reward-rate-atomsrb-r>" %}
ATOM Real Reward Rate
{% endembed %}

**Inflation Rate Behavior**

* New ISLM is minted by the HAQQ coinomics module at the end of every block: `mint = totalBonded × rc/100 × (blockTime − previousBlockTime) / year`. The annual mint is therefore bonded ISLM × Reward Coefficient.
* The Reward Coefficient is a governance parameter. It was initially set to 7.78% and was reduced to **3.0%** by governance proposal 42 (passed 12 November 2024). With a 10% community tax, this yields 3.0% × (1 − 0.10) = **2.70%** on bonded ISLM.
* Minting is proportional to wall-clock time, not block count, so slower block production does not lower the annualized rate: a longer block mints proportionally more.
* The mint is sent to the fee collector and distributed through the standard Cosmos SDK distribution module, where the community tax is deducted.
* The HAQQ documentation specifies a maximum supply of 100 billion ISLM, after which minting stops. On-chain supply (about 18.2 billion ISLM in September 2026) is far below this cap.
* The voluntary Burn & Mint programme (burning ISLM to mint the separate HAQQ token) reduces ISLM supply but does not change the minting formula or ISLMSRB.
* The inflation rate published by Staking Rewards is the annual mint (bonded ISLM × Reward Coefficient) relative to the total on-chain ISLM supply (bank supply of `aISLM`), as in ATOMSRB.

***

### Other Islamic Coin metrics calculated by Staking Rewards

<table><thead><tr><th width="188">Metric</th><th>Description</th></tr></thead><tbody><tr><td>Delegated Tokens</td><td>The number of tokens delegated to validators.</td></tr><tr><td>Self Staked Tokens</td><td>The number of tokens staked by validators directly.</td></tr><tr><td>Staking Wallets</td><td>This metric refers to the number of unique delegator addresses with at least one delegation on-chain. An address delegating to several validators is counted once. It excludes considerations of any minimum delegation thresholds.</td></tr><tr><td>Daily Fees</td><td>The total ISLM transaction fees paid on-chain over the last ~24 hours of blocks, scaled to 24 hours by the elapsed time between the first and last block of the window. For EVM transactions the fee is net of the unused-gas refund: the fee charged up front minus the amount returned by the fee collector after execution.</td></tr><tr><td>Fee Revenue</td><td>Daily Fees × 365 × ISLM price, in USD.</td></tr></tbody></table>

***

#### Data Sources:

* [Staking Rewards](https://www.stakingrewards.com/) from indexed Islamic Coin Blocks and Blockchain RPC Endpoints.

***

#### References:

* <https://docs.haqq.network/>

***

:books:[ Learn more about ISLM Staking](https://www.stakingrewards.com/asset/islamic-coin)

:bar\_chart: [Calculate your ISLM Staking Rewards](https://www.stakingrewards.com/calculator?asset=islamic-coin)

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

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Last updated on 10/07/2026
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