diff --git a/coin/QuantumCoin/staking/StakingRewardsCalculator.js b/coin/QuantumCoin/staking/StakingRewardsCalculator.js
new file mode 100644
index 000000000..187dc088a
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+++ b/coin/QuantumCoin/staking/StakingRewardsCalculator.js
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+// StakingRewardsCalculator.js
+
+class StakingRewardsCalculator {
+    constructor() {
+        this.apy = 0; // Annual Percentage Yield
+    }
+
+    // Set the annual percentage yield
+    setAPY(apy) {
+        if (apy < 0) {
+            throw new Error('APY must be a non-negative value.');
+        }
+        this.apy = apy;
+    }
+
+    // Calculate rewards based on the amount staked and duration
+    calculateRewards(amountStaked, durationInDays) {
+        if (amountStaked <= 0) {
+            throw new Error('Amount staked must be greater than zero.');
+        }
+        if (durationInDays <= 0) {
+            throw new Error('Duration must be greater than zero.');
+        }
+
+        // Calculate daily interest rate
+        const dailyRate = this.apy / 365 / 100;
+
+        // Calculate total rewards
+        const totalRewards = amountStaked * dailyRate * durationInDays;
+        return totalRewards;
+    }
+
+    // Calculate total amount after staking
+    calculateTotalAmount(amountStaked, durationInDays) {
+        const rewards = this.calculateRewards(amountStaked, durationInDays);
+        return amountStaked + rewards;
+    }
+}
+
+// Example usage
+const calculator = new StakingRewardsCalculator();
+calculator.setAPY(10); // Set APY to 10%
+const amountStaked = 1000; // Amount staked in tokens
+const durationInDays = 30; // Duration in days
+
+const rewards = calculator.calculateRewards(amountStaked, durationInDays);
+const totalAmount = calculator.calculateTotalAmount(amountStaked, durationInDays);
+
+console.log(`Rewards for staking ${amountStaked} tokens for ${durationInDays} days: ${rewards.toFixed(2)} tokens`);
+console.log(`Total amount after staking: ${totalAmount.toFixed(2)} tokens`);