# ICP/SNS staking rewards calculation? **URL:** \ **Category:** Developers\ **Created:** [March 12, 2025, 3:00pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190 "2025-03-12T15:00:42Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![dostro](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dostro/32/1161_2.png) [@dostro](https://forum.dfinity.org/u/dostro)\ **Post date:** [March 12, 2025, 3:00pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/1 "2025-03-12T15:00:42Z")
Anybody have the calculation scripts for ICP and SNS projects? ---
**Author:** ![daniel-wong](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/daniel-wong/32/6248_2.png) [@daniel-wong](https://forum.dfinity.org/u/daniel-wong)\ **Post date:** [March 14, 2025, 11:01am UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/2 "2025-03-14T11:01:54Z")
I think you are looking for [fn distribute\_rewards](https://sourcegraph.com/search?q=repo:%5Egithub%5C.com/dfinity/ic%24+f:gov+fn%5C+distribute_rewards%5C%28&patternType=regexp&sm=0). ---
**Author:** ![dostro](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dostro/32/1161_2.png) [@dostro](https://forum.dfinity.org/u/dostro)\ **Post date:** [March 14, 2025, 1:12pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/3 "2025-03-14T13:12:06Z")
I’m looking for a way to calculate the estimated APY when creating a neuron, specifically the [Voting rewards](https://dashboard.internetcomputer.org/governance) calculation on the dashboard: ![image](https://us1.discourse-cdn.com/flex023/uploads/dfn/original/3X/1/b/1b0104c7f252682021f0acaf624591b852d0e857.jpeg) ---
**Author:** ![ngurian](https://avatars.discourse-cdn.com/v4/letter/n/ac8455/32.png) [@ngurian](https://forum.dfinity.org/u/ngurian)\ **Post date:** [March 14, 2025, 1:53pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/4 "2025-03-14T13:53:13Z")
Hello @dostro For the ICP Dashboard here is how we fetch the data for the Estimate Rewards ```auto const fetchData = async () => { try { // https://ic-api.internetcomputer.org/api/v3/governance-metrics const response = await queryApi('v3/governance-metrics', ApiType.IC); const lastRewardRoundTotalAvailableE8s: any = response.data.metrics.find((element: any) => { return element.name === 'governance_latest_reward_round_total_available_e8s' }); const lastRewardsRoundTotalAvailableIcp: number = Number(lastRewardRoundTotalAvailableE8s.subsets[0].value[1]) / 100000000; setLastRewardsRoundTotalAvailableIcp(lastRewardsRoundTotalAvailableIcp); const totalVotingPowerE8s: any = response.data.metrics.find((element: any) => { return element.name === 'governance_voting_power_total' }); const totalVotingPower: number = Number(totalVotingPowerE8s.subsets[0].value[1]) / 100000000; setTotalVotingPower(totalVotingPower); } catch { setLastRewardsRoundTotalAvailableIcp(undefined); setTotalVotingPower(undefined); } }; ``` And here is how we do the data calculations ```auto if (lastRewardsRoundTotalAvailableIcp !== undefined && totalVotingPower !== undefined && totalVotingPower > 0) { let estimatedRewardsPercentage: number | undefined; let estimatedNeuronDailyRewards: number | undefined; if (sliderState.dissolveDelayYears >= 0.5) { const dissolveDelayBonusSlider: number = 1 + sliderState.dissolveDelayYears / 8; const dailyRewardsIcpPerVotingPowerUnit: number = lastRewardsRoundTotalAvailableIcp / totalVotingPower; let ageBonus: number; if (neuronInfo !== undefined) { ageBonus = 1 + Math.min(neuronInfo.ageSeconds, Constants.governanceMaxNeuronAgeForAgeBonusSeconds) / Constants.governanceMaxNeuronAgeForAgeBonusSeconds / 4; const dissolveDelayBonusActual: number = 1 + (NeuronInfo.getDissolveDelayBonusPercentage(neuronInfo) ?? 0) / 100; estimatedNeuronDailyRewards = neuronInfo.votingPowerE8s / 100000000 * dailyRewardsIcpPerVotingPowerUnit * dissolveDelayBonusSlider / dissolveDelayBonusActual; } else ageBonus = 1; const estimatedRewardsIcpPerVotingPowerUnit: number = dailyRewardsIcpPerVotingPowerUnit * dissolveDelayBonusSlider * ageBonus; estimatedRewardsPercentage = estimatedRewardsIcpPerVotingPowerUnit * 365.25 * 100; } else { estimatedRewardsPercentage = 0; estimatedNeuronDailyRewards = neuronInfo !== undefined ? 0 : undefined; } setEstimatedRewardsPercentage(estimatedRewardsPercentage); setEstimatedNeuronDailyRewards(estimatedNeuronDailyRewards); } } ``` ---
**Author:** ![dostro](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dostro/32/1161_2.png) [@dostro](https://forum.dfinity.org/u/dostro)\ **Post date:** [March 14, 2025, 5:11pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/5 "2025-03-14T17:11:26Z")
Thank you! Will take a look in the coming weeks and let you know how it goes. ---
**Author:** ![Vitalii](https://avatars.discourse-cdn.com/v4/letter/v/d6d6ee/32.png) [@Vitalii](https://forum.dfinity.org/u/Vitalii)\ **Post date:** [April 7, 2025, 11:46am UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/6 "2025-04-07T11:46:52Z")
hi @ngurian, could you please take a look? I have a private method that returns dailyRewards (lastRewardsRoundTotalAvailableIcp / totalVotingPower) ```auto private async getIcpDashboardData(): Promise< | { dailyRewardsPerVotingPowerUnit: number } | undefined > { if (this.icpDashboardData) return this.icpDashboardData try { const response = await fetch( "https://ic-api.internetcomputer.org/api/v3/governance-metrics", ) const data = await response.json() const latestRewards = Number( data.metrics.find( (element: any) => element.name === "governance_latest_reward_round_total_available_e8s", ).subsets[0].value[1], ) / 10 ** this.token.getTokenDecimals() const votingPower: any = Number( data.metrics.find( (element: any) => element.name === "governance_voting_power_total", ).subsets[0].value[1], ) / 10 ** this.token.getTokenDecimals() this.icpDashboardData = { dailyRewardsPerVotingPowerUnit: latestRewards / votingPower, } return this.icpDashboardData } catch (e) { console.error("ICP Dahsboard Error: ", e) } } ``` Also I have two separate methods for calculating apr and rewards: 1. APR: Here I can’t understand what is 4 (ageBonus last devide action)? Is it a constant value or where it can be taken? ```auto async calculateEstAPR( lockValueInMonths: number, lockValue: number, ): Promise { const data = await this.getIcpDashboardData() if (data === undefined) return const dissolveDelayBonusSlider = 1 + lockValueInMonths / (this.getMaximumLockTimeInMonths() / 12) const ageBonus = 1 + Math.min(lockValue, Number(this.params.max_neuron_age_for_age_bonus[0])) / Number(this.params.max_neuron_age_for_age_bonus[0]) / 4 const estimatedRewardsIcpPerVotingPowerUnit: number = data.dailyRewardsPerVotingPowerUnit * dissolveDelayBonusSlider * ageBonus return `${(estimatedRewardsIcpPerVotingPowerUnit * 365.25 * 100).toFixed( 2, )}%` } ``` 1. Projected Rewards: I am confused where should I take the votingPowerE8s variable?? ```auto async calculateProjectRewards( amount: string, lockValueInMonths: number, ): Promise { const data = await this.getIcpDashboardData() if (data === undefined) return const { dailyRewardsPerVotingPowerUnit } = data const dissolveDelayBonusSlider = 1 + lockValueInMonths / 12 / this.getMaximumLockTimeInMonths() / 12 const dissolveDelayBonusActual = 1 + (Number(this.params.max_dissolve_delay_bonus_percentage[0]) ?? 0) / 100 const votingPowerE8s = 1 // ??? const estimatedNeuronDailyRewards = ((votingPowerE8s / 10 ** this.token.getTokenDecimals()) * dailyRewardsPerVotingPowerUnit * dissolveDelayBonusSlider) / dissolveDelayBonusActual const value = (estimatedNeuronDailyRewards * lockValueInMonths * 30) .toFixed(this.token.getTokenDecimals()) .replace(TRIM_ZEROS, "") return { getTokenValue: () => `${value} ${this.token.getTokenSymbol()}`, getUSDValue: () => this.token.getTokenRateFormatted(value) || "Not listed", } } ``` ---
**Author:** ![dostro](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dostro/32/1161_2.png) [@dostro](https://forum.dfinity.org/u/dostro)\ **Post date:** [May 15, 2025, 1:03pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/7 "2025-05-15T13:03:04Z")
@ngurian could you please help Vitalii with his questions? we’re still blocked here ---
**Author:** ![Dylan](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dylan/32/18010_2.png) [@Dylan](https://forum.dfinity.org/u/Dylan)\ **Post date:** [May 15, 2025, 4:25pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/8 "2025-05-15T16:25:50Z")
> [@Vitalii](#): > > APR: > Here I can’t understand what is 4 (ageBonus last devide action)? Is it a constant value or where it can be taken? Dividing by 4 scales the age bonus linearly from 0% to 25%, based on the neuron’s age. The code is currently doing this: ```auto ageBonus = 1 + (ageRatio / 4); ``` The code below does the same thing, and using `0.25` in the calculation like this probably would be a bit more clear than using `4`: ```auto ageBonus = 1 + (ageRatio * 0.25); ``` ![image](https://us1.discourse-cdn.com/flex023/uploads/dfn/original/3X/c/d/cd07d99f0ecb444402b39b57e198c31124783610.png) ---
**Author:** ![Dylan](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dylan/32/18010_2.png) [@Dylan](https://forum.dfinity.org/u/Dylan)\ **Post date:** [May 15, 2025, 4:28pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/9 "2025-05-15T16:28:27Z")
An SNS sets its own voting rewards parameters, so if writing code for an SNS neuron you would use those parameters rather than scaling from 0% to 25%. ---
**Author:** ![Dylan](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dylan/32/18010_2.png) [@Dylan](https://forum.dfinity.org/u/Dylan)\ **Post date:** [May 15, 2025, 4:34pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/10 "2025-05-15T16:34:40Z")
> [@Vitalii](#): > > Projected Rewards: > I am confused where should I take the votingPowerE8s variable?? For an NNS neuron, you can call [get\_neuron\_info](https://dashboard.internetcomputer.org/canister/rrkah-fqaaa-aaaaa-aaaaq-cai#get_neuron_info) on the NNS Governance canister. ![image](https://us1.discourse-cdn.com/flex023/uploads/dfn/original/3X/4/8/482c816a02dd0da1c7658aeb6573ed15891cad1e.png) ---
**Author:** ![Dylan](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/dylan/32/18010_2.png) [@Dylan](https://forum.dfinity.org/u/Dylan)\ **Post date:** [May 15, 2025, 4:48pm UTC](https://forum.dfinity.org/t/icp-sns-staking-rewards-calculation/42190/11 "2025-05-15T16:48:09Z")
For SNS neurons, the SNS Governance canister unfortunately does not return the voting power, so you need to calculate it yourself. The source of truth for how to do this is the SNS Governance code. >