CFA INSTITUTE LEARN · MODULE 05 · LESSON 03
Asset-Backed Securities &
Securitization Models
Two deals. One desk. One sprint. An Indian auto-loan ABS, a US ABS beside it — same architecture, two regulators, two answers. Pick the one you would underwrite, and defend it.
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SPRINT LENGTH 45 minutes |
SPRINT TYPE Active application |
STANDARDS IN PLAY Ind AS 109 · 110 |
REGULATORS RBI · SEBI · IFSCA |
THE DEAL IN FOUR NUMBERS
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₹500 Cr commercial-vehicle loan pool |
~50,000 borrowers in the pool |
3 rated tranches issued |
AAA(SO) senior-tranche rating target |
WHAT YOU WILL OWN BY THE END
You will be able to —
01 |
APPLY Allocate one period of pool collections through a sequential-pay liability waterfall and identify which tranche absorbs the shortfall — within 2% of the expected answer. |
02 |
ANALYZE Deconstruct the two-step Indian accounting process for derecognition — Ind AS 110 consolidation and Ind AS 109 transfer tests — and predict the outcome on a concrete NBFC deal. |
03 |
UNDERSTAND Differentiate Indian PTC structures from US ABS structures, including the regulators, trust vehicles, retention rules, and credit-enhancement stack typical of each market. |
04 |
ANALYZE Quantify the loss-absorbing capacity of internal and external credit enhancements on an Indian deal, and reason about which mechanisms survive originator stress. |
GLOSSARY Key terms you’ll see this sprint — open before you begin
| PTC | Pass-Through Certificate. The legal instrument the SEBI-registered trust issues to investors. Each tranche (Senior, Mezzanine, Sub) is a different class of PTC. |
|---|---|
| NBFC | Non-Banking Financial Company. An RBI-regulated lender that does not accept retail demand deposits. Most Indian auto and CV originators (including AutoDrive) are NBFCs. |
| SPV | Special Purpose Vehicle. A bankruptcy-remote trust that holds the receivables and issues the PTCs. In India, the trust is administered by a SEBI-registered Trustee Company. |
| FLDG | First Loss Default Guarantee. A contractual cover provided by the originator that absorbs the first defined slice of pool losses (typically 8–12%) before any tranche feels them. |
| MRR / MHP | Minimum Retention Requirement / Minimum Holding Period. RBI Master Direction rules forcing the originator to keep skin in the deal (5% or 10% of pool) and to season the loans on its own book before securitizing (3 or 6 months). |
| OC | Overcollateralization. The SPV issues PTCs at a face value less than the underlying pool. The excess (e.g. ₹500 Cr pool vs ₹450 Cr in PTCs) absorbs early losses. |
01 |
SCENARIO A tale of two markets |
ou are a Credit Analyst at a global mutual fund with mandates in New York and Mumbai. Your Portfolio Manager wants to deploy capital into Asset-Backed Securities for a steady stream of income. Two deals sit on your desk — the same fundamental architecture, but two entirely different regulatory regimes.
| The US deal | The Indian deal | |
|---|---|---|
| POOL | US$500M sub-prime auto loans, 60–72 month tenor. | ₹500 Cr prime commercial-vehicle loans, 36–60 month tenor. |
| ORIGINATOR | Detroit-captive finance arm of a US automaker. | AutoDrive Finance Ltd. — an Indian Non-Banking Financial Company. |
| REGULATORS | SEC · OCC · Dodd-Frank §941 | RBI · SEBI (for listed PTCs) · IFSCA (for GIFT-City SPVs) |
| TRUST VEHICLE | Delaware statutory trust — a true sale to a bankruptcy-remote entity. | SEBI-regulated trust deed; SEBI-registered Trustee Company issues Pass-Through Certificates (PTCs). |
| SKIN IN THE GAME | 5% retention under Dodd-Frank §941 / Regulation RR. | RBI Minimum Retention Requirement — 5% (loans > 24 mo) or 10% (loans ≤ 24 mo). |
| TYPICAL CE STACK | Subordination + overcollateralization + excess spread + reserve account. | First Loss Default Guarantee + cash collateral + subordination + excess spread. |
Your task across this sprint: validate the Indian accounting structure, identify the enhancements protecting your tranche, and stress-test the cash flows in the exercise at the end.
02 |
DERECOGNITION The Indian accounting context |
For the Indian deal to work, AutoDrive Finance must legally and accounting-wise remove the ₹500 Cr of vehicle loans from its own balance sheet and onto the SPV’s. This is derecognition, and Indian Accounting Standards prescribe a strict two-step audit.
Click each step to make a prediction first — then reveal the standard’s test logic and a worked example on the AutoDrive deal.
01 Predict — must AutoDrive consolidate the SPV onto its own balance sheet?
The standard. Ind AS 110 defines control as all three of the following:
- Power over the SPV’s relevant activities — who appoints servicers, who can replace the trustee.
- Exposure to variable returns — residuals, excess spread, First Loss Default Guarantee draws.
- Ability to use that power to affect those returns.
Worked micro-example — AutoDrive. Retains a 12% sub-PTC, holds the right to appoint 2 of 5 trustees, and earns the servicer fee. Walk the three control tests:
| Power? | Partial — trustee-appointment and servicing rights both matter. |
|---|---|
| Variable returns? | Yes — 12% sub-PTC plus excess-spread exposure. |
| Ability to use power to affect returns? | Yes — servicing decisions shape default-cure rates. |
Verdict · SPV consolidates onto AutoDrive’s books. The legal sale alone is not sufficient.
Why this matters for you. If the SPV consolidates, the “off-balance-sheet” capital relief AutoDrive marketed to its lenders evaporates — and your view of its leverage changes materially.
02 Predict — does AutoDrive get to derecognize the ₹500 Cr pool?
The standard. Ind AS 109 derecognition cascades through three sub-tests:
2aHave the contractual rights to cash flows expired or been transferred?
AutoDrive has assigned the receivables to the SPV trust. Rights transferred ⇒ proceed to 2b.
2bAre substantially all risks and rewards transferred? — the “90/10 rule.”
The math. Compute the variability of net cash flows the originator retains versus what the SPV bears. If the originator’s retained variability < 10% of total, derecognize. If > 90%, do not. In between ⇒ go to 2c.
Worked example — AutoDrive. Retains 10% MRR + 5% excess spread + servicer fee. The retained pieces absorb the first ~12–15% of pool losses; on historic CV loan portfolios that’s > 50% of expected loss variance.
Verdict · substantial-but-not-all retention — proceed to 2c.
2cHas control passed to the transferee?
Control test. Can the SPV sell the loans to a third party unilaterally? If yes, derecognize. If no, recognize a continuing-involvement asset at the extent of AutoDrive’s retained exposure.
AutoDrive. The trust deed allows the trustee to sell loans only with originator consent.
Verdict · control retained — recognize a partial asset and a corresponding liability equal to the cash received.
A typical NBFC PTC deal in India fails Step 1 and Step 2c — meaning the ‘capital relief’ narrative is often weaker than the marketing deck suggests.
SKIN IN THE GAME
India’s skin-in-the-game rules mirror Dodd-Frank §941 — with sharper teeth.
Per the RBI Master Direction — Securitisation of Standard Assets Directions, 2021 (24 Sep 2021), the originator must retain:
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MINIMUM RETENTION REQUIREMENT 5% loans > 24 months 10% loans ≤ 24 months |
MINIMUM HOLDING PERIOD 3 mo monthly-repayment loans 6 mo longer repayment frequencies |
Why it’s there. Alignment of interest. If AutoDrive holds the first 10% of losses, they have a strong incentive to underwrite carefully. As your fund’s analyst, the MRR is your free hedge against origination risk.
FIGURE 03 · WHEN CAN AUTODRIVE ACTUALLY SECURITIZE?
RECALL · BEFORE YOU SCROLL ON
In your own words: what is the difference between consolidation (Ind AS 110) and derecognition (Ind AS 109)? Which one decides whether the SPV appears on AutoDrive’s balance sheet, and which one decides whether the loans disappear from it?
CHECK YOURSELF Three interactive questions
REMEMBER · QUESTION 01
Which Indian Accounting Standard governs the derecognition of financial assets?
Click each option to test it.
AInd AS 110
NOT QUITE
Not quite. Ind AS 110 governs consolidation — whether the SPV itself appears on the originator’s books. Derecognition of individual financial assets is covered by a different standard.
BInd AS 109
CORRECT
Ind AS 109 (Financial Instruments) mirrors IFRS 9 and contains the three-step derecognition cascade: rights expired or transferred ⇒ risks-and-rewards test ⇒ control test.
CInd AS 115
NOT QUITE
Not quite. Ind AS 115 covers revenue from contracts with customers — unrelated to securitisation derecognition.
DInd AS 116
NOT QUITE
Not quite. Ind AS 116 covers leases. Derecognition of financial assets sits elsewhere in the standards.
UNDERSTAND · QUESTION 02
What does the “90/10 rule” inside Ind AS 109’s risks-and-rewards test actually measure?
Click each option to test it.
AWhether the originator’s retained share of net-cash-flow variability is below 10% or above 90% of the total pool’s variability.
CORRECT
The standard tests variability of net cash flows, not absolute size of retention. If retained variance < 10% of total, derecognise; > 90%, do not; in between, proceed to the control test.
BWhether at least 90% of loans in the pool are performing at the time of sale.
NOT QUITE
Not quite. RBI sets “standard asset” eligibility floors, but the 90/10 rule in Ind AS 109 is about retained risk variability, not pool performance.
CWhether the senior tranche absorbs less than 10% of expected pool losses.
NOT QUITE
Not quite. That’s an attachment-point question for the rating agency’s model, not for the accounting standard.
DWhether the SPV holds at least 90% of the pool’s economic interest.
NOT QUITE
Not quite. By design the SPV holds 100% of the legal interest. The question is what risk and reward variability the originator retains.
APPLY · QUESTION 03
AutoDrive sells the ₹500 Cr pool to the SPV, retains a 12% sub-PTC, keeps servicer rights, and can appoint 2 of 5 trustees. What is the most likely accounting outcome?
Click each option to test it.
AFull derecognition — the loans leave AutoDrive’s balance sheet cleanly.
NOT QUITE
Not quite. A 12% sub-PTC plus servicer rights keep substantial variability with AutoDrive; trustee-appointment rights pull control back too. Both Ind AS 110 and Ind AS 109 cascades fail.
BSPV consolidates onto AutoDrive’s books, and the pool remains recognised with continuing-involvement accounting.
CORRECT
Step 1 (Ind AS 110): AutoDrive has power (trustee/servicing), variable returns (sub-PTC), and ability to affect returns — consolidate. Step 2 (Ind AS 109): retained variability is substantial and control is retained ⇒ derecognition fails; book a continuing-involvement asset and matching liability.
CAutoDrive recognises only an equity investment in the SPV equal to the 12% sub-PTC.
NOT QUITE
Not quite. That treatment would require the SPV to be independent of AutoDrive (no consolidation) and the loans to fully derecognise. Neither holds here.
DAutoDrive can choose to either consolidate or derecognise at its discretion.
NOT QUITE
Not quite. Ind AS 109/110 are not elective; the cascade of tests determines the outcome. AutoDrive can redesign the deal to change the answer, but cannot pick the treatment.
03 |
TURNING A B-RATED POOL INTO AAA BONDS The tranche stack |
The SPV slices the ₹500 Cr of PTC issuance into a vertical capital stack. Losses flow up from the bottom; cash flows down from the top. Junior tranches are paid more (higher coupon) but take losses first — they are the credit enhancement for the senior tranche.
Why AAA from a B-rated pool? The senior’s 80% claim is protected by a 20% (15% mezz + 5% equity) attachment buffer. Stress that buffer against a multiple of expected loss; if it survives, AAA.
WORKED STRESS TEST · IF CUMULATIVE LOSSES REACH 12% OF THE POOL
Suppose defaults net of recovery reach ₹60 Cr — 12% of the ₹500 Cr pool, roughly 3× AutoDrive’s historic expected loss on prime CV portfolios. Loss flows bottom-up. Walk it:
| LAYER | INITIAL FACE | ABSORBED | REMAINING |
|---|---|---|---|
| Equity / Sub-PTC | ₹ 25 Cr | ₹ 25 Cr (wiped out) | ₹ 0 |
| Mezzanine | ₹ 75 Cr | ₹ 35 Cr | ₹ 40 Cr |
| Senior | ₹ 400 Cr | ₹ 0 (untouched) | ₹ 400 Cr |
Senior verdict. Even a 3× stress leaves the Senior PTC whole. That is exactly why a 20% attachment buffer (5% Equity + 15% Mezz) on a prime CV pool can support a AAA(SO) rating — the senior’s exposure starts only after ₹100 Cr of losses, and historic worst-case is closer to ₹40 Cr.
THREE SHARPENING QUESTIONS
AIn a sequential-pay deal, what happens to the senior’s average life when prepayments rise?
Sequential vs pro-rata. In sequential-pay, all principal goes to the most senior outstanding tranche until fully repaid; mezzanine then begins amortizing. In pro-rata, principal is distributed in proportion to each tranche’s outstanding balance.
Worked numbers. If monthly prepayments rise from 1% CPR to 3% CPR, the senior tranche’s weighted-average life can drop from ~3.2 years to ~2.1 years — a material reinvestment-risk shift for your fund.
So what. If your mandate forbids reinvestment risk, prefer a pro-rata structure or a senior tranche with a lockout period.
BIf ₹50 Cr of the pool defaults, which tranches absorb the loss?
Subordination as credit enhancement. Loss flows bottom-up:
- Equity tranche (₹25 Cr) is wiped out first.
- The remaining ₹25 Cr eats into Mezzanine; Mezz now sits on ₹50 Cr face.
- Senior (₹400 Cr) is untouched. AAA remains AAA.
Senior’s attachment point: 20% of pool losses must happen before any senior loss — roughly 5× the historic expected loss for prime CV portfolios in India.
CWhat is the difference between time-tranching and credit-tranching?
Credit tranching creates a loss-priority structure (senior > mezz > equity) using subordination — mitigates default risk.
Time tranching creates a prepayment-priority structure (e.g., a Planned Amortization Class supported by a Companion class that absorbs prepayment variability) — mitigates reinvestment risk, not default risk.
Most Indian PTC deals are credit-tranched only. Time tranching is more common in US RMBS and agency CMOs.
CHECK YOURSELF Two interactive questions on the tranche stack
UNDERSTAND · QUESTION 01
Why can a Senior PTC carry a AAA(SO) rating when the underlying pool would be rated closer to B?
Click each option to test it.
ABecause the Senior class is paid first each month under the cash waterfall.
NOT QUITE
Payment order protects against timing mismatches, not against credit losses. The waterfall and the loss structure are two different mechanisms.
BBecause the Equity and Mezzanine tranches absorb losses before the Senior is touched, creating an attachment buffer the rating agency stresses against multiples of expected loss.
CORRECT
Subordination plus the FLDG, OC, and spread cushions push the Senior’s attachment point well above 4–5× expected loss. That is what supports the AAA(SO) opinion.
CBecause the SEBI trustee guarantees Senior cash flows.
NOT QUITE
The trustee administers the trust deed and enforces the waterfall — it does not provide credit support.
DBecause the underlying CV pool yields ~14%, which is above the Senior coupon.
NOT QUITE
High pool yield generates excess spread, which is one source of cushion — but yield alone does not set the rating. Loss absorbency does.
APPLY · QUESTION 02
Your fund owns the Senior PTC. Prepayments jump from 1% CPR to 3% CPR. What is the most likely impact on you?
Click each option to test it.
AThe Senior credit rating drops because the pool shrinks faster than expected.
NOT QUITE
The rating reflects loss-absorbency, not pool size. Faster pay-down actually reduces the pool’s loss surface.
BThe Senior’s weighted-average life shortens, exposing you to reinvestment risk at potentially lower yields.
CORRECT
Sequential-pay structures send all principal to the Senior first. WAL can fall from ~3.2 years to ~2.1 years — you get your money back early, at whatever rates prevail.
CSenior cash flows freeze until Mezzanine catches up.
NOT QUITE
In sequential-pay there is no freeze — Senior amortizes ahead of Mezzanine. In pro-rata there is no freeze either; each tranche gets a share of principal.
DThe Equity tranche absorbs all prepayments and you are unaffected.
NOT QUITE
Prepayments are not losses — they flow through the waterfall as principal repayment, top-down.
04 |
INTERNAL VS EXTERNAL Credit enhancements |
Beyond subordination, the SPV uses additional mechanisms to push the senior tranche up the rating scale. Each absorbs a slice of expected loss before your tranche feels it. The Indian deal stack is materially different from the US default — surety bonds are rare here.
INTERNAL Built into the cash-flow structure
| FLDG / Recourse to seller | A First Loss Default Guarantee from the originator covers a defined slice of pool losses. | Typical 8–12% FLDG ⇒ ₹40–60 Cr of first-loss support before mezz is touched. |
| Overcollateralization | SPV issues PTCs at a face value less than the pool. The excess pool absorbs early losses. | ₹450 Cr PTCs against ₹500 Cr pool ⇒ ₹50 Cr OC cushion (10%). |
| Excess spread | Pool yield exceeds the weighted-average PTC coupon plus fees. The surplus is captured monthly — released to equity or trapped to cover losses. | 14% asset yield − 9% coupon − 1% servicer − 0.5% trustee = 3.5% spread ≈ ₹17.5 Cr/yr running cushion. |
| Cash collateral / FD | Originator parks cash (often a fixed deposit) with the trustee, drawable on shortfall. | 3% on ₹500 Cr = ₹15 Cr dry-powder. |
| Subordination | Equity / sub-PTC takes first loss; mezz second. Shown in the tranche stack above. | Equity 5% + Mezz 15% = ₹100 Cr attachment buffer below senior. |
Stacked total on the AutoDrive deal: ~₹215 Cr of internal loss-absorbing capacity (~43% of the pool). The rating agency stresses this by 4–5× expected loss; if it survives, AAA.
EXTERNAL Third-party support
| Bank guarantee | The dominant external CE in Indian deals. A scheduled bank issues an irrevocable guarantee for a defined amount, drawable by the trustee on shortfall. Cost: typically 30–75 bps p.a. |
| Parent / corporate guarantee | When AutoDrive’s parent (say, a listed CV manufacturer) provides the guarantee. Cheaper than a bank LC; but rating agencies cap the deal’s rating at the parent’s own. |
| Third-party letter of credit | Less common in India post-2008. Provides defined-amount loss cover; draws are typically repaid from excess spread. |
| Monoline insurance / surety bonds | Largely a US construct. Not common on Indian PTCs — mentioned for cross-market comparison. An AAA-rated insurer wraps principal and interest. |
Analyst note. External CEs introduce correlated credit risk — a guarantor downgrade drags the deal’s rating too. Always check the guarantor’s standalone rating before crediting the enhancement.
FIGURE 04 · THE CE CUSHION VS EXPECTED LOSS
RECALL · BEFORE YOU SCROLL ON
Which two internal credit enhancements would survive a scenario where the originator itself goes bankrupt? (Hint: think about who controls the cash.)
CHECK YOURSELF Two interactive questions on credit enhancements
ANALYZE · QUESTION 01
AutoDrive itself goes bankrupt. Which internal credit enhancement is most resilient to that event?
Click each option to test it.
AFLDG — First Loss Default Guarantee.
NOT QUITE
FLDG is contractual recourse to AutoDrive’s own balance sheet. If AutoDrive is insolvent, the FLDG is unenforceable. This is the worst-affected enhancement in originator default.
BExcess spread.
NOT QUITE
Excess spread depends on the originator continuing to service the pool. In default, servicing may transfer and collection efficiency drops — spread compresses sharply.
CCash collateral / Fixed deposit already parked with the trustee.
CORRECT
Once the cash is in the trustee’s name in a bankruptcy-remote account, AutoDrive’s insolvency does not reach it. This is structurally independent of the originator.
DThe originator’s sub-PTC holding.
NOT QUITE
AutoDrive’s sub-PTC is an asset on AutoDrive’s books and would form part of the insolvency estate — not credit support for the deal.
APPLY · QUESTION 02
A deal carries a bank guarantee from a AA-rated scheduled commercial bank covering 15% of pool losses. Why might the deal still not be rated AAA(SO)?
Click each option to test it.
ARBI does not allow external credit enhancements on PTC structures.
NOT QUITE
RBI permits external CEs; bank guarantees are the dominant external CE in Indian deals.
BThe guarantee introduces correlated credit risk — the deal’s rating is typically capped at the guarantor’s standalone rating.
CORRECT
A guarantor downgrade drags the deal too. A AA guarantor cannot lift a structure above AA, no matter how much loss cover it provides.
CBank guarantees do not count toward internal CE calculations.
NOT QUITE
True technically — they’re external — but that’s not the rating constraint. The constraint is correlated downgrade risk.
DSurety bonds are a US construct and rating agencies refuse to credit them in India.
NOT QUITE
We are talking about a bank guarantee, not a surety bond. Different instrument, different mechanics.
05 |
ASSET INPUTS MEET LIABILITY INPUTS The modeler’s toolkit |
When you build a securitized cash-flow model, you separate Asset inputs (what the truck-loan borrowers pay into the pool) from Liability inputs (what the SPV pays out to investors). Both feed the waterfall in the next section.
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INPUTS · ASSET CASH FLOW What pays into the pool
WORKED VECTORShow a sample input setPool: ₹500 Cr, weighted-avg life 30 mo, 14% asset yield. Defaults: 4% cumulative, front-ended (50% in first 12 mo). Recoveries: 35%, 18-month lag. Prepay: 1.5% CPR. Output: monthly cash-flow vector that feeds the liability side. |
INPUTS · LIABILITY CASH FLOW What pays out to investors
WORKED VECTORShow a sample input setSenior PTC: ₹400 Cr, 9.0% coupon. Mezzanine PTC: ₹75 Cr, 11.0% coupon. Sub-PTC (equity): ₹25 Cr, residual. Servicer fee: 1.0% p.a., paid top of waterfall. Output: required payment by class — the right-hand side of the waterfall. |
WORKED SENSITIVITY · SENIOR WAL AS CPR ACCELERATES
Hold everything else constant. Step the Conditional Prepayment Rate up from 1% to 5% and watch how fast the Senior PTC’s weighted-average life collapses — this is the reinvestment-risk channel.
| CPR | SENIOR WAL | % CHANGE vs BASE | REINVESTMENT RISK |
|---|---|---|---|
| 1.0% (base) | 3.2 yrs | — | Baseline |
| 2.0% | 2.7 yrs | −16% | Moderate |
| 3.0% | 2.1 yrs | −34% | Material |
| 5.0% | 1.5 yrs | −53% | Severe |
Decision rule. If your mandate carries a duration target, a 50% drop in Senior WAL forces unplanned reinvestment. Prefer either a Planned Amortization Class structure with a lockout window, or build the rate-environment scenario into your tranche selection.
Common modeler mistake: sizing prepay risk off the historical CPR alone. The right base case is the distribution of CPRs in stress — macro dips compress CPR (people hold onto cheap loans); rate cuts expand it (refi wave).
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Your turn. One period of collections. Three tranches. Who gets paid — and who absorbs the shortfall? HANDS-ON EXERCISE · SECTION 06 |
06 |
EXERCISE · ACTIVE APPLICATION The liability waterfall |
DELIVERY NOTE
In the live Canvas environment this exercise is delivered through an LTI 1.3 external-tool launch to a Magic-EdTech-hosted micro-app, with an XLSM macro fallback for institutions that do not allow external tool registrations. This page shows the in-line preview version.
EXERCISE 01 · THE TASK
A macro dip slowed prepayments. The pool generated ₹10.0 Cr this month against scheduled liabilities of ₹11.0 Cr. How much does the Subordinate PTC class receive?
Predict your answer first — before opening the cash-flow data.
REVEALOpen the cash-flow data
| Asset cash flow (collections) | ₹ 10.0 Cr |
| Servicer fee | − 0.5 Cr |
| Senior PTC payment due | − 7.0 Cr |
| Mezzanine PTC payment due | − 2.0 Cr |
| Subordinate PTC payment due | ₹ 1.5 Cr |
ANALYZE · FOLLOW-UP
Next month is worse — collections drop to ₹8.5 Cr. Same liabilities. Which tranches receive nothing, and what is the cumulative shortfall sitting on the Sub-PTC?
REVEALWorked answer
₹8.5 − 0.5 (fee) = 8.0. Senior takes 7.0, leaving 1.0. Mezz needs 2.0 — receives only 1.0 (shortfall 1.0). Sub-PTC receives 0; cumulative Sub shortfall = 1.0 + 1.5 (prior month) = ₹2.5 Cr. Senior is still untouched.
So what. When shortfalls become persistent, rating agencies start trapping excess spread — even the Mezz holder feels it before the Senior holder does. Watch the trigger language in the trust deed.
EVALUATE · THIRD ESCALATION
Month three. Collections collapse to ₹6.5 Cr. Same scheduled liabilities. At what point does the Senior tranche start absorbing losses — and what is your action as an analyst the moment it does?
REVEALWorked answer
₹6.5 − 0.5 (fee) = ₹6.0 Cr. The Senior is due ₹7.0 Cr but receives only ₹6.0 Cr — a ₹1.0 Cr Senior shortfall. Mezz and Sub-PTC both receive 0. This is the inflection point.
By this month, the rating agency’s trigger language will typically have activated: excess spread is being trapped, Mezz coupons may step up, and the deal is on negative watch. The internal CE stack started at ~₹215 Cr; if shortfalls compound at this pace it can be exhausted in 3–4 months.
So what. When the Senior actually feels pain, the deal is structurally failing. By then, the marked-down price will already be in the market. Your action: mark-to-market well before the rating agency moves — the rating is a lagging indicator of structural deterioration, not a leading one.
07 |
WHAT YOU CAN DEFEND AT YOUR NEXT IC MEETING What you can do now |
01 |
APPLY You can take one period of pool collections and walk it through a sequential-pay liability waterfall, identifying which tranche is paid in full and which class absorbs the shortfall. On the AutoDrive deal this period, the Senior and Mezzanine PTCs cleared, while the Sub-PTC took the ₹1.0 Cr hit. |
02 |
ANALYZE You can deconstruct the two-step Indian accounting audit — Ind AS 110 consolidation (power + variable returns + ability to use power) and Ind AS 109 derecognition (rights transferred ⇒ 90/10 risks-and-rewards ⇒ control). You saw why AutoDrive’s retained sub-PTC, servicing, and trustee rights pull the deal back onto its balance sheet. |
03 |
UNDERSTAND You can articulate the structural differences between a US auto-loan ABS (SEC/OCC regulation, Delaware statutory trust, Dodd-Frank §941 5% retention, surety-bond-friendly stack) and an Indian commercial-vehicle PTC (RBI/SEBI regulation, SEBI-trustee structure, RBI MRR of 5%/10% with a 3/6-month MHP, bank-guarantee-led external CEs). |
04 |
ANALYZE You can quantify the loss-absorbing capacity of an internal CE stack: FLDG ~₹40–60 Cr, OC ~₹50 Cr, excess spread ~₹17.5 Cr/yr, cash collateral ~₹15 Cr, plus ₹100 Cr of subordination below the senior — ~₹215 Cr of protection on a ₹500 Cr pool — and name where each layer fails (FLDG depends on originator solvency; bank guarantees introduce guarantor-credit correlation). |
SPACED RETRIEVAL · BEFORE YOU CLOSE THIS TAB
- How does RBI’s MRR differ in intent from a contractual First Loss Default Guarantee? (One is regulatory, one contractual — can a deal have both?)
- In Lesson 1 you read about “true sale” treatment under SARFAESI. Does ‘true sale’ alone get AutoDrive over the Ind AS 109 derecognition bar? (No — risks-and-rewards and control tests still bind.)
- Recall the credit-rating modifiers from Lesson 2 (the ‘(SO)’ suffix). Why do PTC ratings carry it? (Structured-finance opinion on the SPV’s structure, not the originator’s standalone credit.)
LOOKING FORWARD · LESSON 04 PREVIEW
From structure to spread.
In Lesson 04 you put a price on what you just learned: option-adjusted spread for prepayment uncertainty, Z-spread for credit, and the relative-value framework that lets you put the AutoDrive PTC head-to-head with the Detroit-captive US ABS on a risk-adjusted basis. Same architecture, different regulators, different premia — and now you will know which one to buy.