What is STP?
A Systematic Transfer Plan (STP) is a feature that automatically transfers a fixed amount of money from one mutual fund (typically a debt/liquid fund) to another (typically an equity fund) at regular intervals — usually monthly.
Think of it as an internal SIP: instead of money coming from your bank account, it comes from a liquid/debt fund where you've parked a lump sum. The result is the same as a regular SIP — systematic, disciplined, averaged-entry into equity.
When to Use STP
STP is designed for one specific situation: you have a large lump sum that you want to invest in equity, but you're concerned about investing it all at once when markets may be at high valuations.
Common scenarios:
- Year-end bonus of ₹5–10 lakhs
- Property sale proceeds
- Inheritance or gift received
- Maturity of FD, insurance policy, or PPF
- Large salary arrears
How STP Works — Step by Step
- Invest your lump sum (say ₹12 lakhs) in a Liquid Fund or Low Duration Debt Fund
- Set up STP: transfer ₹1 lakh every month from the Liquid Fund to your chosen equity fund
- For 12 months, ₹1L/month automatically moves from Liquid Fund → Equity Fund
- Your lump sum gets deployed gradually into equity at averaged prices
- Meanwhile, the remaining amount in the Liquid Fund earns 6.5–7.5% returns
STP vs SIP: Key Differences
| Factor | STP | SIP |
|---|---|---|
| Source of funds | Liquid/debt fund (invested lump sum) | Bank account (monthly income) |
| Best for | Deploying existing lump sum into equity | Regular monthly income investment |
| Intermediary earning | Liquid fund earns while waiting | Money sits in bank at low interest |
| Flexibility | Change amount, frequency, stop anytime | Same flexibility |
| Tax | Each transfer is taxed (liquid fund redemption) | No tax until redemption of equity units |
Tax on STP: The Important Catch
Each STP transfer is treated as a redemption from the source fund (liquid/debt fund) followed by a fresh investment in the target fund (equity). This means:
- If the liquid fund has been held less than 36 months: gains taxed at slab rate
- For most STP users holding liquid funds for 1–12 months: gains are minimal (liquid funds earn 6–7%)
- The tax on liquid fund gains is usually very small — ₹100–500 per transfer on a ₹1L STP
- The averaged equity entry benefit usually far outweighs this small tax cost
Which Fund to Use as STP Source?
- Liquid Fund (most popular): Very low risk, T+1 redemption, earns 6.5–7.5%. Best default choice.
- Arbitrage Fund (tax-efficient for 30% bracket): Treated as equity fund for tax. After 1 year, LTCG at 10%. If your STP spans more than 12 months, this is more tax-efficient than a liquid fund for 30% taxpayers.
- Ultra Short Duration Fund: Slightly better yield than liquid fund, minimal extra risk. Good for STP periods of 6–12 months.
Optimal STP Duration
The purpose of STP is to average market entry. Most financial planners recommend a 6–12 month STP period:
- 3–4 months: Too short for meaningful averaging if you fear a near-term crash
- 6 months: Good balance — enough averaging without too much idle cash in liquid fund
- 12 months: Ideal for very large amounts or when markets are at all-time highs
- 24 months+: Only if amounts are very large (> ₹50 lakhs) and you want very gradual deployment
Real Example: STP vs Lump Sum
Year: March 2020. You have ₹12 lakhs to invest in equity. Markets are at all-time highs. Two choices:
- Lump sum in March 2020: Markets crash 38% by late March. Your ₹12L falls to ₹7.4L. Then recovers fully by November 2020. Final position after 3 years: good, but you experienced a terrifying drawdown.
- STP over 12 months from April 2020: You buy heavily during the March–June 2020 crash. Average purchase price significantly lower. Final position after 3 years: meaningfully better AND less emotional stress during the crash.
Use our SIP calculator to model your STP deployment plan, or book a free consultation for personalised STP strategy.