Rate Tiers

function getDiscountedRate(transactionAmount, baseRate) {
    let discount = 0;
    const rateTiers = [
        { min: 15001, rate: 1 },
        { min: 5001, rate: 0.7 },
        { min: 1001, rate: 0.55 },
        { min: 201, rate: 0.35 },
        { min: 51, rate: 0.2 },
        { min: 0, rate: 0.0 }
    ];
    const sortedThresholds = rateTiers.sort((a, b) => b.min - a.min);
    for (const threshold of sortedThresholds) {
        if (transactionAmount >= threshold.min) {
            discount = threshold.rate;
            break;
        }
    }
    const discountedRate = baseRate * (1 + discount / 100);
    return Number(discountedRate.toFixed(2));
}