Step-Up SIP Calculator
SIP with annual top-up
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How step-up SIP works
A step-up (or "top-up") SIP increases your monthly contribution every year — typically by a fixed percentage. If you start at ₹10k/month and step up 10% annually, year 2 = ₹11k/month, year 3 = ₹12.1k/month, and so on. The math compounds: the later (larger) instalments grow for the longest, the earlier (smaller) instalments grow longer.
Why it's effective
Your salary typically rises 8-12% a year. A flat SIP shrinks in real terms because of inflation — you're saving less of your growing income. A step-up SIP grows with you, and the magic of compounding does the rest. Over a 20-year horizon, a 10% step-up SIP can produce 60-70% more corpus than the same starting amount as a flat SIP.
How the math is computed
Each year is treated as a separate annuity at the year's monthly amount, compounded forward to maturity. We iterate year-by-year, applying the 10% (or chosen) increase each January.