Daily Interest Calculator — Calculate Daily Interest on Loans & Savings

Daily Interest Calculator

Calculate daily interest on loans, savings accounts, credit cards, and investments. Determine interest costs or earnings based on principal amount, interest rate, and time period.

Step 1: Principal & Interest Rate

$10,000
5.0%

Understanding Interest Types

Simple interest is calculated only on the principal. Compound interest is calculated on principal plus accumulated interest. Daily accruing interest is common for savings accounts and loans.

Step 2: Time Period & Currency

30

About Daily Interest

Daily interest calculations are essential for loans, savings accounts, and credit cards. The calculation basis (365 vs 360 days) can affect the total interest amount, especially for large principals or long terms.

Daily Interest Calculation Results

Summary
Interest Comparison
Breakdown

Daily Interest Amount

$1.37
Based on $10,000 principal at 5% annual rate
Total Interest (Period)
$41.10
Total Amount
$10,041.10
Monthly Interest
$41.10
Annual Interest
$500.00

Interest Type Comparison

Interest Type Daily Interest Total Interest (30 days) Total Amount

Interest Accumulation Over Time

Daily Interest Formula

Daily Interest = (Principal × Annual Rate) ÷ Days in Year

For simple interest: Daily Interest = (Principal × Annual Rate) ÷ 365. For compound interest: Amount = Principal × (1 + Rate/n)^(n×t) where n is compounding frequency.

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