Finance
Daily Compound Interest
Compound growth with daily compounding and contributions
FAQs
How is daily compounding applied?
We use the per-day growth base and compound the principal and each contribution for the remaining days in the period.
What does contribution frequency mean?
Choose whether you add a fixed amount monthly or yearly; each contribution compounds from its deposit date.
How to Use the Daily Compound Interest Calculator
See how money grows when interest compounds every day.
- Enter the principal.
- Enter the annual interest rate.
- Enter the time period.
- Review the future value and interest earned.
Daily Compounding Formula
Future Value
A = P × (1 + r/365)^(365 × t)
Interest is added daily, so it compounds 365 times per year.
Example:
Input: $10,000 at 5% for 2 years
Calculation: 10,000 × (1 + 0.05/365)^730
Result: ≈ $11,051.71
Real-World Use Cases
Savings Accounts
Many high-yield accounts compound daily.
Credit Card Interest
Card interest also compounds daily — in the lender's favor.
Tips
Tips
- Daily compounding beats monthly or annual at the same rate.
- For debt, daily compounding makes paying early even more valuable.
Related Calculators
Compound InterestCalculate compound interest and investment growthRoth IRA CalculatorProject tax-free retirement savings growth in a Roth IRARetirement CalculatorPlan your retirement savings and incomeRent vs Buy CalculatorCompare the total cost of renting vs. buying a home over timeAPR CalculatorEstimate APR from loan amount, monthly payment, term, and upfront feesBill Split CalculatorSplit restaurant bills and expenses with custom shares, tips, and taxes