Daily vs Monthly vs Annual Compounding
Banks advertise "daily compounding" like it's a game-changer. Is it? Here's the real dollar difference on a $10,000 deposit earning 5% over 10 years.
Annual
$16,288.95
$6,288.95 interest
Monthly
$16,470.09
$6,470.09 interest
Daily
$16,486.65
$6,486.65 interest
$10,000 at 5% for 10 Years
Final balance and total interest earned by compounding frequency.
| Frequency | How Often | Final Balance | Interest Earned |
|---|---|---|---|
| Annual | Interest added once per year | $16,288.95 | $6,288.95 |
| Quarterly | Interest added every 3 months | $16,436.19 | $6,436.19 |
| Monthly | Interest added each month | $16,470.09 | $6,470.09 |
| Daily | Interest added every day | $16,486.65 | $6,486.65 |
Test Other Amounts & Rates
Use the compounding-frequency selector in the calculator to compare your own numbers.
Compound Interest Calculator
Final Balance after 20 years
$142,438
Total Contributed
$53,000
Interest Earned
$89,438
Growth over time
Frequently Asked Questions
Does compounding frequency really make a big difference?
Less than most people expect. On a $10,000 deposit at 5% over 10 years, switching from annual to daily compounding adds only about $197.70 — the interest rate and time invested matter far more than how often interest is calculated.
Why is daily compounding only slightly better than monthly?
Because each step up in frequency has diminishing returns. Going from monthly to daily compounding on this $10,000 deposit adds just $16.55 over 10 years. Most of the benefit of compounding is already captured by monthly.
What is APY and how does it relate to compounding frequency?
APY (annual percentage yield) bakes the compounding frequency into a single number, so you can compare accounts fairly. A 5% rate compounded daily has a slightly higher APY than 5% compounded annually. When comparing savings accounts, compare APYs — not just the stated rate.
Related tools:
Compound Interest Calculator High-Yield vs Regular Savings Investment Return Calculator