Where Are India's SIPs Concentrated? AMFI Data Shows a Huge Category Divide

India's systematic investment plan ecosystem has reached a scale that looked improbable a few years ago. SIP contributions touched a record ₹32,297 crore in August 2026 and contributing SIP accounts crossed 10 crore.

Yet that headline hides an important divide. AMFI's category-level data shows about 60.2 closing SIP accounts for every 100 small cap fund folios, compared with only 18.6 for ELSS. Mid cap funds were at 53.8, flexi cap funds at 48.3 and large cap funds at 42.2.

The small cap ratio is therefore more than three times the ELSS ratio. That does not prove that one category has three times as many SIP investors, but it does suggest that recurring mandates are distributed very differently across fund categories. Before interpreting the gap, we need to be precise about what it measures.

What Does the SIP Account to Folio Ratio Actually Mean?

A mutual fund folio is an account maintained with an asset management company. It can hold units in one or more schemes of that fund house, subject to how the folio is structured. A SIP account, in AMFI's monthly category table, refers to a registered systematic investment instruction.

These are not the same unit of measurement.

Suppose one folio has two SIP registrations in the same category. The data can count one folio in the denominator and two SIP accounts in the numerator. One investor can also own several folios across fund houses and run several SIPs.

This means a ratio of 60 closing SIP accounts for every 100 folios does not mean 60% of folios have a SIP. It certainly does not mean 60% of investors invest through SIPs. The data does not identify unique investors or tell us how many folios contain at least one active mandate.

The most accurate description is SIP account to folio ratio, or simply SIP intensity. It is calculated as follows.

Closing SIP accounts divided by category folios, multiplied by 100.

The ratio is useful for comparing categories because it shows how numerous current SIP registrations are relative to the folio base. It cannot be used to calculate how many folios do not have SIPs.

SIPs can run at frequencies other than monthly, so every closing account should not be treated as one monthly debit. A SIP may also stop or mature while the folio and accumulated units remain. The ratio measures registrations at the end of August relative to folios, not whether those folios have ever received SIP investments.

Which Equity Mutual Fund Categories Are Most SIP Heavy?

AMFI's August 2026 monthly dataset provides the folio count and closing SIP-account count for each category. Recalculating the ratio from those two figures produces the following comparison.

Source, AMFI monthly report for August 2026. Ratios calculated from closing SIP accounts and folios and rounded to one decimal place.

The ₹39.21 lakh crore active equity block had 18.92 crore folios and 8.76 crore closing SIP accounts. That works out to 46.3 SIP accounts for every 100 folios. This subtotal should not be called all equity because AMFI reports equity index funds separately.

After including equity index funds, which had 1.56 crore folios and 49.64 lakh closing SIP accounts, the combined ratio becomes about 45.2 per 100 folios. In other words, the choice of classification changes the aggregate, even before any behavioural interpretation begins.

Why might small cap and mid cap funds rank so high?

Small cap funds and mid cap funds are commonly positioned as long-horizon wealth-building products. Their underlying stocks can be more volatile and less liquid than large companies, which makes staggered investing intuitively attractive to many investors.

A SIP spreads purchases across dates, reduces the pressure to choose one entry point and creates a saving habit. Those features may help explain why registrations are dense in these categories, although the ratio cannot reveal investor motivation or whether mandates will continue through a deep correction.

The high ratios also do not make these categories safer. A SIP changes the timing of purchases, not the risk of the assets being purchased. Small and mid sized companies can still experience steep drawdowns, extended underperformance and liquidity stress.

Why are flexi cap and large cap ratios lower?

Flexi cap funds still show substantial SIP intensity at 48.3 accounts per 100 folios. They allow the fund manager to move across large, mid and small sized companies without fixed minimum allocations to each market-cap segment, which can make them a broad core holding for some investors.

Large cap funds stand lower at 42.2. That difference is real in the August snapshot, but the table alone cannot establish its cause. It may reflect different product histories, investor acquisition channels, investor preferences, stopped mandates or the age of the folio base.

Contra funds are also a reminder not to explain the ranking with one theory. Their 59.6 ratio is close to small cap funds, even though the category follows a contrarian style rather than a market-cap segment. Only five contra schemes existed in the AMFI table, so scheme concentration can also influence the aggregate.

Why Does ELSS Have Such a Low SIP Account to Folio Ratio?

ELSS is the biggest active-equity outlier. It had 1.62 crore folios but only about 30 lakh closing SIP accounts in August 2026, producing a ratio of 18.6. That is less than one-third of the small cap ratio and well below every other active equity category in the table.

To understand this gap, start with the product itself. An ELSS or tax-saving mutual fund invests predominantly in equities. Eligible investments can qualify for a deduction within the overall Section 80C limit of ₹1.5 lakh when an investor uses the old tax regime.

Under the default new tax regime, the regular Section 80C deduction is not available. Taxpayers who are eligible to choose the old regime can still claim applicable Section 80C deductions, but ELSS is no longer a tax-saving tool for someone remaining under the new regime.

That distinction matters because tax saving has historically been central to the category's use case. As the new regime has become more attractive for many taxpayers and remains the default regime, the tax-led reason for opening or continuing an ELSS investment has weakened for that group.

Every ELSS SIP instalment has its own three-year lock-in

ELSS also has a mandatory three-year lock-in. When an investor uses a SIP, every instalment is a fresh investment and its units begin a separate three-year lock-in from that allotment date.

This can make the experience different from running a SIP in an ordinary open-ended equity fund. Stopping the mandate prevents future instalments, but units already purchased cannot be redeemed until their respective lock-in periods end.

The lock-in may encourage long-term holding, but it can also make some investors prefer planned or occasional contributions rather than a continuing mandate. That is a plausible explanation, not something the ratio proves.

Does tax-season investing explain the result?

ELSS has long been associated with tax planning, which often intensifies late in the financial year. Still, it would be too strong to look at the August ratio and declare that most ELSS investors invest only in February or March.

AMFI's gross mobilisation data shows some late-year variation but not a simple, decisive seasonal pattern in the recent period. Gross ELSS mobilisation was about ₹1,295 crore in February 2026 and ₹1,599 crore in March, before easing to ₹1,292 crore in April and ₹1,133 crore by August. September 2025 mobilisation, at about ₹1,554 crore, was also close to March's level.

Recent net flows tell a clearer story about pressure on the category, though not about the choice between SIP and lump sum. Open-ended ELSS funds recorded a net outflow of ₹1,078 crore in August 2026. Gross mobilisation was ₹1,133 crore while redemptions were ₹2,211 crore. ELSS also saw net outflows in each month from September 2025 through April 2026 in the AMFI reports reviewed for this analysis.

Those figures are consistent with a mature folio base facing redemptions and softer new demand. Matured locked-in investments, stopped SIPs and the reduced relevance of Section 80C for new-regime taxpayers may contribute, but the data cannot assign a precise share to any explanation. Nor can it justify labelling ELSS simply as a lump-sum or deadline product.

Does Higher SIP Intensity Come With Smaller Average Folio Sizes?

Once ELSS is separated as a special case, another pattern appears. Several categories with high SIP intensity have relatively modest average holdings per folio, while many low-intensity debt and arbitrage categories have much larger average holdings.

Average holding per folio is calculated by dividing a category's month-end AUM by its folio count. It is not the balance of a typical investor and it can be skewed by very large accounts. Still, at a category level it provides useful context about ticket size.

Source, AMFI August 2026 month-end AUM, folios and closing SIP accounts. Average holdings and ratios independently calculated and rounded.

The broad logic makes economic sense. Categories used for long-term household wealth creation can collect many recurring, relatively small contributions. Money market, corporate bond and arbitrage funds can serve treasury, liquidity, parking and allocation needs where investments may arrive in larger blocks.

But examples alone can exaggerate a pattern, so the relationship was tested across 41 non-ETF, open-ended category rows with usable observations, excluding category subtotals. The rank correlation between SIP intensity and average folio size was about minus 0.58. That indicates a moderate inverse relationship, not an iron rule.

This result supports careful wording. Categories with more SIP accounts relative to folios broadly tend to have smaller average folio sizes, but SIP intensity explains only part of the difference. Product purpose, scheme history, distribution mix, market movements and investor composition can all matter.

The data also does not identify whether the larger accounts belong to institutions, high net-worth individuals or retail investors. That would require a separate investor-type dataset. Average folio size alone is not enough to assign demographics.

ELSS and childrens funds show why exceptions matter

ELSS has a low ratio of 18.6 despite a relatively small average holding of ₹1.52 lakh. That combination fits the idea of a large legacy folio base with limited current SIP density, but it does not prove the explanation. The lock-in, tax-linked history, changing incentives and inactive old folios may all contribute.

Childrens funds are another exception. Their average holding was only about ₹85,041, the lowest among the examples above, while the SIP ratio was roughly 15.0. It would be tempting to explain this as annual gifting or a distinctive parental behaviour, but AMFI's table contains no transaction-purpose data. The honest conclusion is simply that the category does not fit the broad inverse pattern.

The exceptions warn us that product structure and history can matter more than one cross-category relationship.

Why ETFs Pull Down the Industry SIP Ratio

The entire mutual fund industry had 28.35 crore folios and 10.10 crore closing SIP accounts in the August category table. Dividing the two gives 35.6 closing SIP accounts for every 100 folios.

That number is mathematically correct, but it mixes products with different transaction structures.

Exchange traded funds are bought and sold on stock exchanges. A broker may let an investor schedule recurring ETF purchases, but that is an exchange order and is not automatically an AMC mutual fund SIP registration of the kind counted in AMFI's SIP-account column.

ETFs accounted for 3.97 crore folios in August, while the category table reported only two closing SIP accounts across the entire ETF block. The near-zero count reflects the measurement framework and product plumbing. It should not be interpreted as proof that ETF investors never make recurring purchases.

After removing ETF folios and those two SIP accounts, the ratio rises from 35.6 to 41.4 closing SIP accounts for every 100 non-ETF folios. That six-point change illustrates why a headline average can mislead when structurally different products are placed in one denominator.

Even 41.4 is not the percentage of non-ETF folios or investors running SIPs. It remains a ratio between closing registrations and folios.

Index funds make the distinction especially clear. Equity index funds are not exchange traded and can accept conventional mutual fund SIP mandates. They had 49.64 lakh closing SIP accounts against 1.56 crore folios, a ratio of 31.8. Passive portfolio construction does not automatically mean ETF transaction mechanics.

Why Do AMFI Reports Show Different SIP Account Numbers?

Readers may encounter three August figures that all exceed 10 crore. They should not be treated as interchangeable.

The closing category total can be matched with category folios. Contributing accounts instead show how many accounts made a contribution during August, while total outstanding accounts refer to the broader stock reported in AMFI's industry statistics.

Differences can arise because a registration may exist but not contribute in a particular month, SIP frequencies differ and reporting definitions or cut-off treatment may not be identical across tables. The gap is a reason to keep the labels intact, not to choose whichever 10 crore figure produces the preferred conclusion.

The ₹32,297 crore contribution figure is different again. It measures money received through SIPs during August, not a number of accounts. Dividing this amount by contributing accounts could produce a rough average contribution per account, but it would not be the average instalment because frequencies, missed contributions and multiple transactions can complicate the comparison.

Investors who want to understand the basic mechanism can read more about what a SIP is, compare SIP and lump-sum investing or use a SIP calculator to test goal-based scenarios.

What August 2026 AMFI SIP Data Can and Cannot Tell Us

The category table creates a new way to look beyond the national SIP total, but it needs a disciplined reading.

What the data directly shows

It shows that closing SIP accounts are not evenly distributed relative to folios. Small cap and contra funds were close to 60 accounts per 100 folios, while ELSS was below 19. It shows that active equity excluding equity index funds had a ratio of 46.3, compared with 31.8 for equity index funds.

It also shows that ETFs materially depress the all-industry ratio because exchange-traded units have a large folio base but almost no conventional SIP accounts in this table. Finally, it shows a moderate inverse cross-category association between SIP intensity and average holding per folio.

What can reasonably be inferred

The distribution is consistent with recurring investing being more central to certain long-horizon equity categories. ELSS appears structurally different because of its tax-linked history, three-year lock-in, mature folio base and diminished Section 80C relevance for new-regime taxpayers. These factors are reasonable context for its low ratio and recent outflows.

These are interpretations supported by product mechanics and surrounding data. They are not direct observations of individual behaviour.

What the data cannot prove

The table cannot tell us the percentage of investors who use SIPs or the percentage of folios with an active SIP. It cannot identify unique people, their income level, their motivation or whether they invest through lump sums as well.

It cannot establish that SIP intensity is rising or falling because this article analyses an August 2026 snapshot. A trend claim would require directly comparable category data across multiple periods, calculated on the same basis.

It also cannot tell us which fund category is better. A high ratio may show how a category is accessed, but it says nothing by itself about valuation, portfolio quality, diversification, expected return or suitability.

What Should Mutual Fund Investors Learn From This Data?

The most important lesson is simple. A SIP is an investing method, not an asset class and not a risk label.

Running a SIP can automate saving, stagger entry prices and support disciplined investing. It cannot turn an unsuitable fund into a suitable one. Rupee-cost averaging can lower the average purchase cost in some market paths, but it does not guarantee a profit or protect against a prolonged decline.

Before starting a SIP, the investor still has to make an active decision about what sits underneath it. A broad large cap or flexi cap fund, a volatile small cap fund, an equity index fund, an ELSS fund and a money market fund solve very different problems.

The decision should begin with the goal, time horizon and ability to tolerate losses. It should then consider the category mandate, portfolio diversification, costs and overlap with existing investments. The popularity of a category or the number of other SIP registrations should come much later, if it matters at all.

The same principle works in reverse. A low SIP ratio does not make ELSS, arbitrage or debt funds inferior. It may simply reflect different product mechanics, tax use cases, ticket sizes or transaction habits.

For ELSS specifically, investors should first establish whether they use the old tax regime and have unused Section 80C capacity. They should then evaluate the fund as an equity investment that carries market risk and a separate three-year lock-in for each SIP instalment. Tax eligibility should not replace portfolio suitability.

For small and mid cap funds, high SIP intensity should not be mistaken for safety or social proof. These categories require a long horizon and the ability to tolerate periods of sharp underperformance. Starting gradually can help with timing discipline, but allocation size remains the larger risk decision.

The Bigger Story Is Where India's SIPs Are Concentrated

India's ₹32,297 crore monthly SIP engine is undeniably large. More than 10 crore accounts contributed in August 2026, showing how deeply systematic investing has entered household finance.

The more revealing story, however, is not the headline total. It is the category divide beneath it.

Small cap funds had about 60.2 closing SIP accounts for every 100 folios, mid cap funds 53.8 and flexi cap funds 48.3. ELSS, despite being an equity category with a large folio base, had only 18.6. Several debt and arbitrage categories combined still lower SIP intensity with far larger average holdings.

These differences suggest that Indian investors do not use every mutual fund category in the same way. Some products sit closer to recurring household wealth creation. Others are used for tax planning, liquidity management, tactical allocation or larger one-time deployments.

The ratio cannot tell us exactly who those investors are or what each one intended. Used carefully, it does something more valuable than a flashy penetration claim. It shows that India's SIP story is not one behaviour repeated across the industry, but many different behaviours shaped by the purpose and structure of each fund category.