STP Calculator: How to Move Lumpsum Money into Equity Gradually

STP solves a specific cash-flow problem: the money is already available, but you do not want to invest the full amount into the target fund on one day. It automates repeated redemptions from the source scheme and purchases into the target scheme.

Use the free Dhan Saarthi STP Calculator to compare transfer amounts, durations and return assumptions.

How Does an STP Work?

1. Invest the lumpsum in an eligible source scheme, often a liquid or debt fund.
2. Select a target scheme from the same AMC or fund house.
3. Choose the transfer amount, date and frequency.
4. On each date, units are redeemed from the source and the proceeds buy units in the target at applicable NAVs.
5. The process continues for the chosen number of instalments or until the available source balance is exhausted.

Scheme rules vary by AMC, including eligible schemes, dates, minimum amounts and instalment counts. Read both scheme documents before enrolling.

Worked Example: Transfer ₹12 Lakh Over 12 Months

Assume the following simplified plan:

• Initial source amount: ₹12,00,000
• Monthly transfer: ₹1,00,000 at the start of each month
• Transfer period: 12 months
• Assumed source-fund return: 6% a year
• Assumed target-fund return: 12% a year

Under a constant monthly-return illustration, after 12 transfers the target value is about ₹12.81 lakh, approximately ₹34,000 remains in the source due to interim growth, and the combined estimated value is about ₹13.15 lakh.

When Should You Consider STP?

• You received a bonus, asset-sale proceeds or maturity amount and want gradual equity deployment.
• You want a rules-based transfer schedule instead of manually timing every purchase.
• Your goal is long term, but investing the entire equity allocation immediately would make you uncomfortable.
• You are rebalancing between eligible schemes within the same fund house.

When STP May Not Be the Right Choice

• The money is needed within a short period and should not take equity risk.
• You need to move between different fund houses; a standard STP generally operates within one AMC.
• Exit load or tax on repeated source-fund redemptions makes the plan inefficient.
• You already invest from monthly salary — in that case, SIP may be simpler because new money comes from your bank account.

STP vs SIP vs SWP

If your question is how long withdrawals might last, use the SWP Calculator. If you want to measure historical annualised growth, use the CAGR Calculator.

Does STP Reduce Risk?

STP can reduce one-day entry-timing risk by spreading target-fund purchases across dates. It does not remove market risk, guarantee a better outcome than lumpsum investing, or protect the target fund from losses. If markets rise steadily during the transfer period, investing later can produce a lower final value than investing the full amount earlier.

Tax and Exit-Load Point Investors Miss

Every transfer out of the source scheme is treated as a redemption. Capital gains tax and exit load may therefore apply to each STP instalment based on the source scheme, holding period, applicable load rules and tax law then in force. The simultaneous purchase into the target scheme starts a new acquisition date for those units.

How to Use the STP Calculator

1. Enter the lumpsum placed in the source fund.
2. Enter the planned transfer per instalment.
3. Enter realistic expected returns for source and target funds.
4. Select the transfer duration.
5. Review source balance, target value and combined estimate.
6. Repeat with lower target returns and compare against immediate lumpsum deployment.

How Should You Phase Your Lumpsum?

Model the source fund, target fund and transfer schedule together.

Educational illustration only. Mutual fund returns are market-linked and not guaranteed. Review scheme documents and consult a qualified adviser or tax professional where needed.

How Dhan Saarthi Helps

Choosing the right source fund, target fund and transfer pace for an STP depends on your own cash-flow needs and how soon you might need the money — details a standalone calculator can't factor in on its own. Dhan Saarthi brings your existing holdings, your goals, and your available lumpsum into one view, so you can see how a proposed STP schedule fits alongside the rest of your portfolio, not just in isolation.

If you've received a bonus or a lumpsum and aren't sure whether to deploy it immediately or phase it in, or want a second opinion on your transfer schedule, Dhan Saarthi's team can walk through your specific timeline and risk comfort with you, so the pace you settle on is grounded in your own situation rather than a generic assumption.

Conclusion

An STP can smooth the entry of a lumpsum into equity, but it doesn't guarantee a better outcome than investing all at once — the right transfer pace depends on your source and target fund returns, your comfort with market timing, and how the plan is reviewed along the way.