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SaveSmart
See exactly how compound interest turns small monthly deposits into a meaningful balance.
Each year's interest earns interest the following year. Over decades, this snowball effect can double or triple the total compared to simple interest.
A 25-year-old saving $200/month at 7% beats a 35-year-old saving $400/month at the same rate by retirement age. Time in the market wins.
Estimate monthly payments with taxes, insurance, and amortization.
OpenProperty price, down payment, tenure — EMI, processing fee, and stamp duty & registration.
OpenCompare loan terms and see total interest paid.
OpenAnnualized returns for any holding period.
OpenWhat you entered
Total months to compound
n = 20 years × 12= 240 monthsMonthly return rate
r = 7% ÷ 12= 0.5833%Compound monthly, adding your deposit each time
balance = balance × (1 + r) + $300.00, starting from $1,000.00, repeated 240×= $160,316.74Total you contributed (not counting interest)
$1,000.00 + $300.00 × 240 months= $73,000.00Interest earned
$160,316.74 − $73,000.00 contributed= $87,316.74Result
Final balance: $160,317
Of your $160,317 final balance, $73,000 came from your own deposits and $87,317 came from compound interest — compounding did roughly 120% of the work your contributions did.