Step-Up SIP Calculator
Compare a growing SIP with a fixed contribution over the same investment horizon.
Step-up SIP vs flat SIP
Both scenarios use the same return assumption. Flat SIP contributions total ₹12,00,000; step-up contributions total ₹19,12,491. Final periodic contribution: ₹23,579.
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Plan the contribution increase as carefully as the return
A step-up SIP increases your monthly contribution at regular intervals. It can help align investing with rising income, but the later payments can become much larger than the starting amount. This calculator shows the final-year monthly contribution alongside projected value so that the contribution plan remains visible.
A practical example
Starting at Rs 10,000 a month with a 10% yearly increase means Rs 10,000 each month in year one, Rs 11,000 in year two and Rs 12,100 in year three. The increase is applied at month 13 and every 12 months after that; it is not applied every month.
Calculation method and assumptions
Periodic growth rate = (1 + annual return)^(1 / periods per year) - 1The default convention treats the annual input as an effective annual return. The calculator uses 12 contribution periods for a monthly SIP and four for a quarterly SIP. It adds each contribution before or after growth according to your timing selection. An annual step-up begins after one complete year and may be a percentage or a fixed rupee increase. Alternatively, choose the nominal convention to divide the annual rate by the selected periods per year. No intermediate rounding is applied; displayed amounts are rounded.
Inflation and goal planning
Today's-money value equals future value divided by (1 + inflation) raised to the number of years. A goal stated in today's purchasing power is first inflated to the future date. The goal solver then deducts the projected lump-sum value and calculates the starting periodic investment needed, including the chosen step-up. These values do not account for taxes or variable market returns.
Step-Up SIP Calculator: Frequently Asked Questions
Can a step-up SIP calculator also adjust for inflation?
Yes. Annual step-up changes the contribution schedule, while inflation translates the projected final value into today's purchasing power. They are separate assumptions; setting a step-up equal to inflation does not itself calculate the real value of the result.
What is a step-up SIP or top-up SIP?
A step-up SIP increases the regular investment after each chosen interval. This calculator models annual increases. Top-up SIP and step-up SIP usually describe the same contribution approach; neither term guarantees a higher rate of return.
How does a 10% annual SIP step-up work?
A starting monthly investment of Rs 5,000 becomes Rs 5,500 in the second year and Rs 6,050 in the third. The 10% increase applies to the previous year's installment, not to the portfolio return.
Can the SIP increase by a fixed rupee amount?
Yes. Fixed-amount mode adds the same amount to the periodic installment each year. An initial Rs 5,000 with a Rs 500 annual top-up becomes Rs 5,500 and then Rs 6,000; it differs from a percentage step-up.
How is total invested calculated for a step-up SIP?
Total invested is the sum of all actual modeled installments, plus any initial lump sum. It is not the starting installment multiplied by the entire tenure because later contributions are larger.
More questions (6)
Is a step-up SIP better than a regular SIP?
It can build a larger corpus because more money is contributed. Compare the additional contributions as well as the additional projected growth. A step-up is only practical when the later installment fits the investor's budget.
What happens when the annual step-up is zero?
With a zero increase, the installment stays constant. Using identical return, timing, frequency and initial investment assumptions gives the same projection as a regular SIP.
Does an annual top-up protect a SIP from inflation?
It may help contributions keep pace with rising costs, but it does not guarantee purchasing power. Inflation-adjusted value separately discounts the projected corpus; increasing contributions and adjusting for inflation are different calculations.
When is the annual increase applied?
The first 12 contributions use the initial monthly SIP. Contributions 13 through 24 use the first increased amount. Each later block of 12 contributions increases by the same percentage.
Does a step-up change the return assumption?
No. It changes contributions only. Growth still follows the return and timing assumptions you enter. Higher contributions must not be confused with a higher investment return.
Can I solve for a starting SIP?
Yes. Goal planner accounts for the annual step-up, initial lump sum, investment horizon and selected return convention. The displayed requirement is an estimate under those assumptions.