Conceptual · Article 3.1.3.2

Market Linked Debentures — Non-Principal Protected.

When Both the Return and the Principal Ride on the Market.

Published as on 22 July 2026

A Market Linked Debenture packages a bond and a market bet into a single note whose return tracks an index such as the Nifty 50. In the principal-protected version, the issuer engineers a floor: whatever the index does, your capital comes back. The non-principal-protected version removes that floor. More of your money funds the derivative, so the upside is larger — but if the index breaches a defined barrier or knock-in level, the payoff formula turns against you and the principal itself erodes. You can lose part, or in a severe move most, of your capital — and only if the issuer stays solvent do you collect anything at all. It is the highest-risk MLD structure, and since SEBI's August 2021 circular it is no longer eligible for fresh issue and listing in India.

At Risk

Principal / Capital

Slab STCG

Section 50AA

Aug 2021

SEBI Prohibition

₹10 lakh+

Typical Ticket

Executive Summary · Page 2

Executive Summary · 6 Findings

A non-principal-protected MLD asks the investor to do something an ordinary bond never does: put the principal itself on the table. The label sounds like fixed income, but the economics are a leveraged bet on an index wrapped inside a single issuer's credit. There is one question it forces: are you being paid enough, and do you understand the formula well enough, to accept that a bad month in the market — not a default — can cost you a slice of your capital?

Covers what a non-PP MLD is and how it differs from the protected variant, the payoff machinery of participation rates, barriers, autocall and knock-in, why the principal is exposed on top of issuer credit risk, Section 50AA slab-rate taxation and loss set-off, the high minimum ticket and thin secondary liquidity, SEBI's August 2021 prohibition on fresh issuance, cleaner alternatives for the same portfolio job, and six questions Indian investors ask.

Key Findings

The principal is a variable, not a floor.

An MLD is a bond wrapped around a derivative on a market index. In the principal-protected variant, the issuer reserves most of the money in fixed income to rebuild capital at maturity. The non-PP variant reserves no such floor, so more funds the derivative — the upside is larger, but the principal is fully exposed to the index's downside.

Barriers and knock-ins decide your fate.

Payoffs are path-dependent. A barrier is a level that governs the formula; an autocall redeems early with a coupon if the index is high enough on an observation date; a knock-in switches protection off if the index falls through a floor. Breach the knock-in and you absorb the full index decline from the start — the same headline "return" can hide very different capital risk.

Market risk sits on top of credit risk.

Even a favourable index path pays nothing if the issuer defaults — the note is the issuer's unsecured obligation. So the investor carries two risks at once: the market/barrier risk of the structure, and the creditworthiness of the single company that wrote it. A downgrade after purchase is a material warning, not a footnote.

Every gain is STCG at slab rate — Section 50AA.

Since Finance Act 2023 (Section 50AA, effective 1 April 2023), all MLD gains are deemed Short-Term Capital Gains taxed at the investor's slab rate — up to 30% plus surcharge and cess — regardless of holding period. No LTCG, no indexation, even after five years. The 10% LTCG advantage that once drove demand is gone.

High ticket, thin exit.

Minimum investments typically ran to ₹10 lakh or more, confining these to high-net-worth buyers. The secondary market is thin: quotes are sparse, spreads wide, and most holders simply have to hold to maturity — precisely when the barrier math finally settles. Illiquidity and complexity compound the capital risk.

Barred from fresh issuance — and out-competed anyway.

SEBI's August 2021 circular made non-principal-protected structures ineligible for fresh issue and listing; only "PP-MLD"-rated notes remain. For market-linked growth, equity funds and index ETFs offer full participation, daily liquidity, no issuer credit risk and 12.5% LTCG — a cleaner deal on every axis.

At A Glance

Metric	Value	Detail
Principal	At risk	No capital floor
Underlying	Market index	Nifty / Sensex etc.
Payoff drivers	Barrier / knock-in	Path-dependent
Second risk	Issuer credit	Unsecured note
Tax	Slab STCG	Section 50AA
Min ticket	₹10 lakh+	HNI only
Liquidity	Thin	Hold to maturity
New issue	Barred	SEBI, Aug 2021

Exhibit 01: Full-Participation Payoff on ₹10 Lakh

Index Move	You Receive	P&L
+40%	₹14.0L	+₹4.0L
+10%	₹11.0L	+₹1.0L
0%	₹10.0L	₹0
−20%	₹8.0L	−₹2.0L
−45% (knock-in)	₹5.5L	−₹4.5L

Illustrative full-participation structure, pre-tax, issuer solvent. Real notes add participation caps, barriers and autocalls that reshape these numbers. The core point holds: below the starting level, the principal itself falls — a loss no ordinary bond can inflict.

The Opening · Page 3

The Opening

A Market Linked Debenture is sold as debt, but it behaves like a bet. Underneath the "debenture" label sit two parts: a fixed-income leg and a derivative leg tied to a market index. In the principal-protected version, the issuer parks the bulk of your money in the fixed-income leg so that, come maturity, the capital is rebuilt no matter what the index did. The non-principal-protected version tears out that safety net. A larger share of your rupees funds the derivative, chasing a bigger payoff — and in exchange, the principal is left standing directly in the path of the market.

"A principal-protected MLD can, at worst, return your money. A non-protected one can hand back less than you invested because an index you don't control slipped through a level you may not have fully priced. The word 'debenture' does a great deal of quiet reassuring that the payoff formula does not deserve."
Debt in Name, Derivative in Nature

The mechanics. Return is governed by a payoff formula written into the term sheet: a participation rate on the index's move, often bounded by a cap on the upside and, on the downside, by a barrier or knock-in. Stay on the right side of the barrier and you earn a conditional return; breach the knock-in and the protection evaporates, exposing you to the full decline from the starting point. These are path-dependent triggers — where the index travels, not just where it ends, can determine what you receive.

The layered risk. Even a perfect index outcome pays nothing if the issuer cannot honour the note; an MLD is the issuer's unsecured promise. So a non-PP MLD stacks market/barrier risk on top of single-issuer credit risk, then wraps both in a thin secondary market and a high minimum ticket. That combination is why the category was ever the preserve of sophisticated, high-net-worth investors — and why SEBI ultimately shut the door on fresh issuance in August 2021.

The Honest Boundary: A non-PP MLD is NOT a safe bond — the principal can fall. It is NOT a simple index fund — a formula, cap and barrier sit between you and the market. It is NOT liquid — expect to hold to maturity. It IS a leveraged, credit-exposed structured bet suited only to investors who can read the term sheet, absorb the downside, and are not chasing a tax break that no longer exists.

Structure

Part I

What a Non-PP MLD Is & Why the Principal Is Exposed

Part II

The Payoff Machinery: Participation, Barriers, Autocall & Knock-In

Part III

Section 50AA Tax, Ticket Size, Liquidity & the SEBI Bar

Part IV

The Verdict: For the Few Who Truly Read the Formula

Consider Only If

✓ You can read the full payoff formula

✓ You can absorb a total capital loss

✓ You have vetted the issuer's credit

✓ You can hold to maturity

Do NOT Touch If

✕ You want your principal safe

✕ You need liquidity or income

✕ You're chasing an old tax break

✕ A newly issued note is offered

Part I

What a Non-Principal Protected MLD Is, and Why the Principal Is Exposed

The bond-plus-derivative anatomy of an MLD; how the allocation ratio decides whether your capital has a floor; and why removing that floor buys larger upside at the price of putting the principal directly in the market's path — on top of the single issuer's credit.

Part I · Page 4

PP vs Non-PP: The One Difference That Matters

Feature	PP-MLD	Non-PP MLD
Capital at maturity	100% floor	No floor
Fixed-income leg	~80–90%	Smaller
Derivative leg	~10–20%	Larger
Upside	Modest	Higher
Downside	Capital safe	Capital erodes

Both variants are the same animal — a debenture whose return is linked to a market benchmark. The difference is the allocation. A PP-MLD reserves most of the money in fixed income so it compounds back to par by maturity, leaving a thin slice to buy the market bet. A non-PP MLD keeps no such reserve: with more funding the derivative, the potential payoff rises, but nothing rebuilds the capital if the index falls.

Two Risks, Not One

Market Risk On Top of Credit Risk

First, the index can move against you and — via the barrier — take a bite out of the principal. Second, the note is the issuer's unsecured obligation: even a winning index path pays nothing if the issuer defaults. A non-PP MLD makes you underwrite both at once, with no diversification across issuers and no capital floor to fall back on.

Where a Non-PP MLD Sits on the Risk Ladder

Layer	Instrument	Capital
Cash	Savings / liquid	Stable
Plain debt	Bonds / debt MF	Largely safe
PP-MLD	Protected note	Floor at par
Non-PP MLD	Unprotected note	At risk
Direct equity	Stocks / options	At risk

A non-PP MLD is not a rung above equity in safety — it sits alongside equity risk, but with a formula, a cap and a single issuer's credit standing between you and the index. You take an equity-like downside without an index fund's transparency, liquidity or diversification.

The core insight: "Non-principal protected" is not a technicality — it is the whole risk story. It means the one thing investors assume a debenture guarantees, the return of capital, is exactly what is not guaranteed. Everything else in the term sheet — participation, cap, barrier — is detail layered on that single, defining exposure.

Part II

The Payoff Machinery: Participation, Barriers, Autocall and Knock-In

How a participation rate, an upside cap, a downside barrier, an early-redemption autocall and a knock-in level combine into a single path-dependent formula — and why two notes with the same advertised return can carry wildly different odds of a capital loss.

Part II · Page 6

The Building Blocks

Participation & Cap

Participation is the share of the index's move you capture — 100%, or leveraged to 1.5x–2x up to a ceiling. A cap then limits how much upside you keep. Higher participation is usually "paid for" by a lower cap, a tighter barrier, or more principal at risk. Nothing is free in the formula.

Barrier & Knock-In — The Trapdoor

A barrier is the level that governs the payoff. A knock-in is its dangerous form: if the index falls through it, capital protection switches off and you absorb the full decline from the starting point. Path matters — a note can breach mid-life and never recover, even if the index closes higher.

Autocall — Early Exit, Capped Reward

On set observation dates, if the index is above a trigger, the note "autocalls" — redeems early with a fixed coupon. Pleasant when it works, but it caps your gain and hands you reinvestment risk, while the downside barrier keeps working right up until it does.

Worked Payoffs on ₹10 Lakh

Structure	If Index +30%	If Index −30%
Full participation	₹13.0L	₹7.0L
1.5x, capped +30%	₹13.0L*	₹7.0L
Barrier at −40%	₹13.0L	₹10.0L†
Barrier breached	—	₹7.0L

Illustrative, pre-tax, issuer solvent. *Cap limits upside at +30% (₹1.5x participation reaches the ceiling early). †If the −40% barrier holds, principal is returned; breach it and the full −30% flows through as a ₹3L loss. Small changes in the barrier flip the outcome.

Read the Scenario Matrix

Every legacy MLD's information memorandum carried a scenario table showing payoffs across market outcomes. That grid — not the headline "up to X%" — is the product. If you hold a note, find it, and map today's index level onto your maturity payoff. Do not wait for the maturity date to discover where you stand.

Part III

Section 50AA Tax, the High Ticket, Thin Liquidity, and the SEBI Bar

Why every rupee of MLD gain is now Short-Term Capital Gains at your slab rate regardless of holding period; how losses are treated and set off; the ₹10 lakh-plus ticket and near-absent secondary market; and why SEBI barred fresh non-PP issuance in August 2021.

Part III · Page 8

Taxation Under Section 50AA (FY 2025-26)

All Gains STCG, Always Slab Rate

Section 50AA (Finance Act 2023, effective 1 April 2023) deems every gain on any MLD — protected or not — Short-Term Capital Gains taxed at your slab rate, whatever the holding period. Up to 30% plus surcharge and cess. No LTCG, no indexation, even after five years. The 10% LTCG edge that once sold these notes is gone.

If You Made a Loss

Because the principal is exposed, some holders redeem below cost. Such a loss is a Short-Term Capital Loss — set off against other STCG in the same year, and any unabsorbed amount carried forward up to eight assessment years against future STCG. Note: STCL cannot offset LTCG. Plan set-off with a tax adviser.

No Grandfathering, and the 2024 Extension

Section 50AA applies to all redemptions or transfers on or after 1 April 2023, whenever the note was bought — there is no grandfathering. Finance (No. 2) Act 2024 later extended Section 50AA to unlisted bonds and debentures from 23 July 2024; for listed MLDs the position is unchanged.

Ticket, Liquidity & the Regulatory Bar

Aspect	Non-PP MLD	Equity ETF
Min ticket	₹10 lakh+	A few hundred ₹
Liquidity	Thin / hold	Daily
Credit risk	Single issuer	None
Tax on gain	Slab STCG	12.5% LTCG*
New issue	Barred 2021	Open

*Equity: 12.5% LTCG on gains above ₹1.25 lakh, held over 12 months. Non-PP MLD figures illustrative of the legacy category.

SEBI's August 2021 Prohibition

Under the NCS Regulations framework, SEBI's Operational Circular held that debt securities not promising to return the principal in full are not "debt securities" for issue and listing. In plain terms: no new non-PP MLD can be issued or listed. Only notes carrying the "PP-MLD" credit-rating prefix qualify.

Who might still hold one: pre-2021 legacy notes with 13-month-to-5-year tenors can still be outstanding or maturing in FY 2025-26 and FY 2026-27. If a "new" non-PP MLD is ever offered to you, verify the ISIN and issue date on BSE/NSE, confirm the "PP-MLD" prefix, and check with a SEBI-registered adviser before acting.

Part IV

The Verdict

A leveraged bet wearing a bond's clothes.

Part IV: The Verdict · Page 10

30-Second Summary

A non-principal-protected MLD is a debenture whose return and principal both ride on a market index. Unlike the protected variant, there is no capital floor: breach a barrier or knock-in and the payoff formula erodes your principal, so you can receive back less than you invested — and only if the issuer stays solvent. It layers market/barrier risk on top of single-issuer credit risk, at a high minimum ticket and with a near-absent secondary market.

Since Section 50AA (Finance Act 2023), every gain is Short-Term Capital Gains at your slab rate regardless of holding period — the old 10% LTCG lure is gone. SEBI barred fresh non-PP issuance in August 2021; any such note is a pre-2021 legacy instrument. For market-linked growth, equity funds and index ETFs deliver full participation, daily liquidity, no issuer credit risk and 12.5% LTCG — a better deal on every axis. The category was for sophisticated investors who could read the formula and absorb the downside; for almost everyone else, it never made sense.

"The question a non-protected MLD really asks is not 'how much can I make?' but 'can I afford to lose this, and do I understand exactly how I might?' If the honest answer to either half is no, the debenture label has done its job of making a leveraged, credit-exposed bet feel like a bond. It isn't one."
The Final Orientation

The Bottom Line: Treat "non-principal protected" as the headline, not the fine print — it means your capital can fall on a market move alone. If you hold a legacy note, locate the scenario matrix, map today's index level onto your maturity payoff, check the issuer's current rating, and plan the Section 50AA tax (slab-rate STCG on gains; STCL set-off on losses). Do not buy a "new" one — none can be legally issued. And for the growth job these notes claimed to do, reach for a low-cost index fund or ETF instead. Verify every ISIN and issuer with a SEBI-registered adviser before acting.

ADWIZR · July 2026

Decision Rules

Defensible Only When

✓ You fully grasp the payoff formula

✓ The capital is risk-money you can lose

✓ The issuer's credit is strong & vetted

✓ You can hold to maturity

A Clear No When

✕ Capital safety is the priority

✕ You need income or liquidity

✕ It's pitched as a bond-like "safe" note

✕ It's a newly issued instrument

Three Misconceptions

What Investors Get Wrong

(1) "Debenture means my capital is safe." Non-PP means it is explicitly not — a market move can erode it. (2) "The tax break makes it worth it." Section 50AA taxes every gain at slab rate; the 10% LTCG edge is gone. (3) "I can sell if it turns." The secondary market is thin; most holders are stuck to maturity, exactly when the barrier settles.

The Cleaner Alternative

For Market-Linked Growth

Equity mutual funds and Nifty ETFs give full, uncapped participation, daily NAV and liquidity, no single-issuer credit risk, and 12.5% LTCG above ₹1.25 lakh over a year. For capital-protected exposure, a PP-MLD keeps a floor — same Section 50AA tax, but the principal comes back.

At Risk

Principal

No capital floor

Slab

STCG tax

Section 50AA

Barred

New issue

SEBI, Aug 2021

Investor FAQ

Questions Indian Investors Ask

Six questions, answered directly.

Investor FAQ · Page 12

Frequently Asked Questions

Q1 Can I lose my principal in a non-principal-protected MLD?

Yes. Unlike a principal-protected MLD, a non-PP MLD offers no capital floor. If the linked index breaches the defined barrier or knock-in level, the payoff formula turns against you and you can receive back less than you invested — potentially losing part, or in extreme scenarios almost all, of your principal. This market/barrier risk sits on top of the issuer's credit risk: even a favourable index outcome pays nothing if the issuer defaults.

Q2 How are gains on a non-PP MLD taxed in India?

Under Section 50AA (inserted by Finance Act 2023, effective 1 April 2023), all gains on any Market Linked Debenture — principal protected or not — are treated as Short-Term Capital Gains taxed at the investor's slab rate, regardless of how long the instrument is held. There is no LTCG treatment and no indexation, even after three, four or five years. A loss is a Short-Term Capital Loss, which can be set off against other STCG and carried forward for up to eight assessment years.

Q3 Can I still buy a newly issued non-PP MLD?

No. Following SEBI's Operational Circular of August 2021 under the NCS Regulations, debt securities that do not promise to return the principal in full are not eligible for fresh issue and listing. Only principal-protected MLDs carrying the "PP-MLD" credit-rating prefix can be issued and listed. Any non-PP MLD you encounter is a pre-2021 legacy instrument trading in the secondary market or approaching maturity — verify its ISIN and issue date on BSE/NSE before acting.

Q4 What is the difference between a PP-MLD and a non-PP MLD?

A principal-protected MLD structurally returns 100% of your capital at maturity regardless of how the index performs — the issuer reserves most of the investment in fixed income to rebuild the principal, leaving a thin slice for market upside. A non-PP MLD reserves no such floor, so a larger share funds the derivative: the potential upside is bigger, but the principal is fully exposed to the downside if the index moves against you.

Q5 What do barriers, autocall and knock-in mean in an MLD payoff?

A barrier is a defined index level that governs the payoff: stay on the right side of it and you earn a conditional return; breach it and the formula changes. An autocall lets the note redeem early with a fixed coupon if the index is above a set level on an observation date. A knock-in is the dangerous mirror image: if the index falls through the knock-in level, the capital protection is switched off and you absorb the full downside of the index from the starting point. These path-dependent triggers are why two MLDs with similar headline returns can carry very different risk.

Q6 Who were non-PP MLDs actually suitable for?

Only sophisticated, high-net-worth investors who fully understood the payoff formula and could absorb a total loss of the committed capital. Minimum tickets were high (commonly ₹10 lakh or more), the secondary market was thin so most holders had to hold to maturity, and the tax advantage that once drew buyers no longer exists under Section 50AA. For most growth needs, equity mutual funds or index ETFs are cheaper, more liquid, more transparent and more tax-efficient (12.5% LTCG on gains above ₹1.25 lakh held over a year), with no single-issuer credit risk.

Key Terms & Definitions

Market Linked Debenture (MLD)

A listed debt instrument whose return is linked to the performance of a market benchmark — such as the Nifty 50, Sensex, gold or an interest-rate index. Internally it combines a fixed-income leg with a derivative leg; the split between them determines how much capital is protected.

Non-Principal Protected (Non-PP)

The variant with no capital floor. Because the issuer reserves nothing to rebuild the principal, a larger share funds the derivative and the principal itself is exposed to the index's downside — the investor can be repaid less than the amount invested.

Participation Rate

The share of the index's move the investor captures — 100%, or leveraged to 1.5x–2x, usually up to a cap. A higher participation rate is typically "paid for" with a lower cap, a tighter barrier, or more principal placed at risk.

Barrier / Knock-In

A defined index level that governs the payoff. A knock-in is the downside form: if the index falls through it, capital protection is switched off and the investor absorbs the full decline from the starting point. Path-dependent — where the index travels, not just where it ends, can matter.

Autocall

An early-redemption feature: on set observation dates, if the index is above a trigger level, the note redeems early with a fixed coupon. It caps the upside and introduces reinvestment risk, while the downside barrier stays live until the note is called.

Section 50AA

The Income Tax provision (Finance Act 2023, effective 1 April 2023) that deems all gains on Market Linked Debentures Short-Term Capital Gains taxed at the investor's slab rate, regardless of holding period — no LTCG, no indexation. Losses are Short-Term Capital Losses eligible for set-off.