Quarterly Interest Calculator
Calculate how quarterly compounding affects your investments with our free interest calculator. Quarterly compounding adds interest to your balance four times per year, a common frequency for corporate bonds, some savings accounts, and dividend-paying investments.
Quarterly Compounding Growth Examples
| Principal | Rate | Years | Quarterly Compounding | Interest Earned |
|---|---|---|---|---|
| $10,000 | 4% | 5 | $12,201.90 | $2,201.90 |
| $25,000 | 5% | 10 | $41,041.40 | $16,041.40 |
| $50,000 | 6% | 15 | $121,033.58 | $71,033.58 |
| $100,000 | 7% | 20 | $393,974.73 | $293,974.73 |
Quarterly vs Other Compounding Frequencies
At 5% APR on $10,000 for one year:
- Continuous: $10,512.71
- Daily: $10,512.67
- Monthly: $10,511.62
- Quarterly: $10,509.45
- Semi-annual: $10,506.25
- Annual: $10,500.00
Quarterly Compound Interest Calculator
``javascript
function calculateQuarterlyCompound(principal, annualRate, years) {
const quarterlyRate = annualRate / 100 / 4;
const quarters = years * 4;
const finalAmount = principal * Math.pow(1 + quarterlyRate, quarters);
const interestEarned = finalAmount - principal;
// Calculate effective annual yield
const effectiveAPY = (Math.pow(1 + quarterlyRate, 4) - 1) * 100;
// Quarterly interest schedule for first year
let balance = principal;
const quarterlySchedule = [];
for (let q = 1; q <= 4; q++) {
const interest = balance * quarterlyRate;
balance += interest;
quarterlySchedule.push({ quarter: q, interest: interest.toFixed(2), balance: balance.toFixed(2) });
}
return {
finalBalance: finalAmount.toFixed(2),
totalInterest: interestEarned.toFixed(2),
effectiveAPY: effectiveAPY.toFixed(3) + '%',
firstYearSchedule: quarterlySchedule
};
}
``
Where You'll Find Quarterly Compounding
Corporate bonds often pay and compound interest quarterly. Some savings accounts and CDs use quarterly compounding, though daily and monthly are more common for consumer accounts. When comparing investment options, always convert to APY for accurate comparisons.