Systematic Investment Plans (SIPs) have become the most popular route for retail investors in mutual funds. By investing small amounts regularly—usually monthly—investors benefit from rupee-cost averaging and disciplined wealth creation.
The marketing message is simple: your SIP runs automatically, your money gets invested on time, and you start accumulating units without hassle.
But behind the scenes, delays between when you pay your SIP installment and when the AMC (Asset Management Company) actually invests it can generate quiet profits for fund houses. While the delay may look insignificant—just one or two days—it happens across millions of transactions, creating a powerful float income stream.
This article unpacks how SIP delays occur, how AMCs profit from them, and what investors can do to protect themselves.
How SIPs Are Supposed to Work
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Debit Instruction: On a chosen SIP date, money is debited from the investor’s bank account.
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Fund Transfer: The amount moves into the AMC’s collection account.
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Unit Allocation: Based on the day’s Net Asset Value (NAV), units are allotted to the investor.
Ideally, if the SIP is scheduled for the 5th of the month, units should be allotted at the NAV of the 5th.
Where Delays Happen
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Bank Processing Delays
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ECS/NACH debits may take a day or two to clear, especially if there’s a non-banking day.
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AMC Internal Processing
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After receiving funds, AMCs may take additional time before pushing money into the scheme pool.
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Cut-Off Timing Issues
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SEBI mandates cut-off times (currently 3:00 PM for equity/debt). If money reaches after this, units are allotted at the next day’s NAV.
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Holiday or Weekend Gaps
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If SIP debit falls on a Friday or holiday, unit allocation may be pushed to Monday, leaving investor money idle.
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How AMCs Profit from Delays
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Float Income
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During the delay, the AMC temporarily holds large sums in its bank accounts.
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This “float” earns interest—even if for just 1–2 days. Across millions of SIP transactions, the aggregate is significant.
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Cash Parking
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Some AMCs may park this float in overnight or liquid instruments, earning short-term yield before transferring money into schemes.
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NAV Arbitrage
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When markets are volatile, delays can result in units being allotted at a less favorable NAV to investors. While not always intentional, AMCs avoid absorbing this timing risk—the investor bears it.
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Why This Matters
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Small Leak, Big Pool
An individual investor may lose only a few rupees of potential gains. But with crores of SIP transactions every month, AMCs collectively profit handsomely. -
Loss of Compounding for Investors
Even small delays mean fewer units purchased. Over decades, this erodes the power of compounding. -
Trust Deficit
SIPs are marketed as “hassle-free and automatic.” Delays—though rarely disclosed—break the spirit of that promise.
Case in Numbers (Illustrative Example)
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Suppose your ₹10,000 SIP is debited on the 5th but units are allotted on the 7th.
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The market rises 1% during this gap. Instead of getting units at ₹100 NAV, you get them at ₹101.
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Units received: 99 instead of 100.
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Over 20 years, this small difference compounds into thousands of rupees.
Now scale this across 5 crore SIP accounts in India, and the float + NAV arbitrage benefit to AMCs runs into hundreds of crores annually.
Regulatory View
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SEBI Cut-Off Rules: SEBI mandates NAV applicability based on money reaching the AMC before cut-off time. This places the onus on banks, intermediaries, and investors.
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Disclosure Gaps: AMCs don’t have to disclose float income separately. It appears in their balance sheet as “other income.”
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Global Practices: In developed markets, tighter T+0 settlement systems reduce such delays, but float still exists.
What Investors Can Do
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Choose SIP Dates Wisely
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Avoid dates close to weekends or bank holidays. Mid-month dates (like 10th–12th) often have smoother processing.
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Opt for Direct Online Transfers
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Some platforms allow UPI or instant transfers, reducing reliance on ECS/NACH.
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Monitor NAV Allotment Dates
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Check your account statement: if debit is on one day but units are allotted 1–2 days later, note the pattern.
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Diversify SIP Platforms
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Some AMCs and fintech platforms process SIPs faster. Test and compare.
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Complain if Delays Are Persistent
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Raise issues with AMCs or SEBI’s SCORES platform if delays are systematic, not incidental.
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The AMC Defense
AMCs argue that:
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Delays are due to banking systems, not deliberate profiteering.
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Float income helps cover operational costs, indirectly benefiting investors.
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Volatility risk during delays cannot be absorbed by AMCs; investors must accept it.
While partly valid, these arguments ignore the scale of float profits and the lack of transparency.
Ethical Dimension
The bigger issue is transparency. Investors trust SIPs as a disciplined vehicle. If fund houses quietly profit from systemic delays without disclosure, it breaches the fiduciary principle of putting investor interests first. Even if technically legal, such practices create a shadow of mistrust.
Conclusion
SIPs are marketed as the most investor-friendly innovation in Indian finance. And largely, they are. But beneath the surface lies a hidden flow of profits—the AMC float from SIP delays. What seems like a harmless one-day gap becomes a multi-crore opportunity for fund houses, at the cost of investor compounding.
For regulators, the solution lies in stronger T+0 settlement systems and mandatory disclosure of float income. For AMCs, the duty is ethical clarity: disclose delays, streamline processes, and ensure investors get the NAV they deserve.
And for investors, the takeaway is vigilance. Even in something as “automatic” as SIPs, small leaks can turn into big losses over time.
Because in the world of investing, the difference between trust and exploitation is often hidden in the fine print of time.
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