What Is a SIP Calculator?

A SIP calculator projects the future value of regular monthly investments using compound interest. SIP (Systematic Investment Plan) investing automates disciplined wealth building — by investing a fixed amount every month, you leverage both compound growth and dollar-cost averaging to build significant wealth over time.

SIP Formula

FV = P × [(1+r)^n − 1] / r × (1+r). Where P = monthly investment amount, r = monthly return rate (annual ÷ 12), n = number of months. The extra (1+r) factor accounts for beginning-of-period investment timing (most SIPs invest at the start of each period).

The Magic of Starting Early

$500/month at 12% for 20 years = $494,000. Starting 5 years earlier (25 years): $941,000 — nearly double from just 5 extra years. Starting 5 years later (15 years): $250,000 — half the outcome. The compounding curve accelerates dramatically in the later years — the last 5 years of a 20-year SIP generate more wealth than the first 15 years combined.

SIP vs. Lumpsum: The Dollar-Cost Averaging Advantage

SIP automatically buys more units when prices are low (after market crashes) and fewer when prices are high. Over a full market cycle, this often produces better average cost than a single lumpsum investment. Studies show SIP outperforms lumpsum in volatile markets, making it the preferred choice for most retail investors.