Simple Interest & Loan Growth Calculator
Compute simple interest earnings, solve for unknown principal, rate, or time, and view year-by-year accumulation milestones
Initial capital or loan amount
Per annum percentage (%)
Total Accumulated Amount (A = P + I)
$11,650.00
Simple Interest Gain: +$1,650.00
Principal: $10,000.00 • Total Interest Earned: $1,650.00
Total Interest Earned (I)
$1,650.00
I = P · (r/100) · t
Daily Interest Accrual
$1.51 / day
Linear daily accumulation rate
Monthly Interest Accrual
$45.83 / mo
Average monthly return
Total Return on Investment (ROI)
16.50%
(Interest ÷ Principal) × 100%
Calculated Principal (P)
$7,500.00
Exact Algebraic Solution
Formula: P = $1,500 / (0.05 × 4) = $1,500 / 0.20
Calculated Principal (P)
$7,500.00
Required starting capital
Resulting Total Amount (A)
$9,000.00
Principal + Interest
Annualized Yield
5.00%
Nominal interest rate
Time Horizon
4.00 Years
Duration in years
Year
Starting Principal
Interest Earned
Ending Balance