BANK3011 · Bank Financial Management
Loan Sales & Securitisation
Loan Sales & Securitisation is the Week-8 topic in BANK3011 Bank Financial Management at the University of Sydney (Saunders & Cornett, chapters 25–26), and it is where a bank learns to move loans — or just their risk — off its balance sheet. A bank can sell whole loans outright (as a participation or an assignment, with or without recourse), securitise a pool of them through a bankruptcy-remote Special Purpose Vehicle (SPV) that issues marketable securities, or transfer the credit risk alone using a credit derivative while the loan stays on its books. The chapter is exaavailable almost entirely by conceptual short-answer, and the marks live in two moves: getting the recourse distinction right and giving the multi-motive answer — these tools reshape not just credit risk but reserves, capital, liquidity, duration and fee income.
What this chapter covers
- 011. Loan sales — participation vs assignment — a participation transfers an economic share with limited control (syndicated loans); an assignment transfers all rights and dominates the market
- 022. Recourse vs non-recourse — without recourse the buyer bears default risk and the loan leaves the seller's books; with recourse the risk stays with the seller as a contingent liability
- 033. Why sell loans — the multi-motive answer — credit-risk transfer plus reserve relief, capital/RWA relief, fee income, liquidity and shorter duration
- 044. Securitisation mechanics — pool loans → sell to a bankruptcy-remote SPV → the SPV issues securities backed by the pool's cash flows
- 055. Balance-sheet effects — loans and their duration leave, cash arrives, RWA and the capital charge fall, and servicing fee income is booked
- 066. Security types — pass-through securities (MBS), mortgage/asset-backed bonds, and CMOs/CDOs built by tranching
- 077. Tranching and the loss waterfall — repayment-risk tranching orders the timing of principal; default-risk tranching orders who absorbs losses first (Equity/Class C first, Senior last)
- 088. Credit enhancement and credit derivatives — subordination, lenders' mortgage insurance, guarantees, and TROR/CDS transfer that make synthetic securitisation possible
The tranche loss waterfall — who absorbs a pool loss first
- +1Order the ladder. Losses fill from the bottom up — Equity absorbs first, then Mezzanine, then Senior — even though cash flows are paid from the top down (Senior first, Equity last).
- +1Equity tranche. It absorbs the first $25m of the $60m loss → wiped out, a 100% loss. $35m of loss remains to allocate upward.
- +1Mezzanine tranche. It absorbs the remaining $35m → loss rate = 35/75 = 46.7%; $40m of the mezzanine survives.
- +1Senior tranche. The full $60m loss is absorbed below it (25 + 35 = 60), so the $400m senior tranche takes $0 → a 0% loss.
- +1Attachment point. The senior tranche only starts losing once losses breach everything beneath it: 25 + 75 = $100m, i.e. 20% of the $500m pool.
- +1Interpret. A 12% pool loss (60/500) is concentrated entirely in the bottom 20% of the structure; the senior 80% is fully protected — that is the whole point of subordination.
Key terms
- Loan participation vs assignment
- Two ways to sell a whole loan. A participation transfers an economic share of the cash flows but only limited contractual control (the syndicated loan is the main example); an assignment transfers all ownership rights so the buyer becomes the lender of record — the dominant form in practice.
- Recourse vs non-recourse
- Whether the buyer can hand a defaulted loan back to the seller. Without recourse the buyer bears the default risk and the loan truly leaves the seller's books; with recourse the seller keeps a contingent liability, so the credit risk has not genuinely left — and no capital relief is granted.
- Securitisation
- Pooling many similar loans and selling the pool to a bankruptcy-remote Special Purpose Vehicle that issues marketable securities backed by the pool's cash flows, moving the assets (and their duration and capital charge) off the bank's balance sheet.
- Special Purpose Vehicle (SPV)
- A separate, bankruptcy-remote trust that buys the loan pool and issues securities against it. Because it is legally isolated, investors are exposed to the pool's performance rather than the originating bank's survival — which is what makes the securities marketable and the senior slices highly rated.
- Pass-through security (MBS)
- A security in which every investor receives a pro-rata share of the same pool cash flow — one flavour for everyone. Borrowers pay a servicer, which passes the cash (net of a servicing fee) through an issuer to investors. US agency examples include Ginnie Mae and Freddie Mac mortgage-backed securities.
- CMO / CDO and tranching
- A collateralised mortgage/debt obligation carves the pool into tranches (classes A, B, C…) with different coupons and priority. Repayment-risk tranching orders the timing of principal; default-risk tranching orders who absorbs losses first — the subordinated Equity/Class C tranche takes first losses in exchange for the highest yield.
- Credit enhancement
- Anything that makes a tranche safer and better rated by absorbing losses before senior investors are hit: subordination (junior tranches take losses first), lenders' mortgage insurance for high-LVR loans, third-party guarantees or letters of credit, and credit derivatives.
- CDS and synthetic securitisation
- A Credit Default Swap pays out if a reference borrower defaults, transferring credit risk without moving the asset. In a synthetic securitisation the loans stay on the bank's title and the SPV writes a CDS on them, so the risk shifts to investors while the loans are never physically sold — the opposite of a traditional true-sale securitisation.
Loan Sales & Securitisation FAQ
Can AI help me with loan sales and securitisation?
Yes — ask Sia to walk through any loan sales and securitisation problem or concept step by step, the way University of Sydney tests it. Sia is an AI tutor that explains the recourse distinction, the securitisation cash-flow chain and the tranche loss waterfall in your own worked examples, building your understanding rather than handing you answers.
Does selling a loan with recourse remove its credit risk?
No — and this is the most-tested trap in the chapter. In a sale without recourse the buyer bears the default risk and the loan leaves the seller's books cleanly. In a sale with recourse the buyer can hand the loan back on default, so the risk stays with the seller as a contingent liability, and regulators generally do not grant capital relief. A counter-intuitive corollary the examiners love: a loan sold with recourse is actually safer for the buyer, because they can return it.
What is the difference between a pass-through security and a CMO?
A pass-through gives every investor a pro-rata share of the same pool cash flow — one flavour for everyone. A CMO (collateralised mortgage obligation) re-engineers that same pool into a priority ladder of tranches with different coupons and default priority, so risk can be sold to investors with different appetites. The pass-through is the base case; the CMO redistributes credit and repayment risk across the tranches.
Why would a bank securitise loans other than to reduce credit risk?
Because securitisation reshapes the whole balance sheet at once, and the exam rewards the multi-motive answer. Selling a pool to an SPV converts illiquid loans into cash (liquidity), removes the assets and their duration (easing any duration mismatch), shrinks risk-weighted assets so the regulatory capital charge falls (capital relief), and books origination and servicing fees (fee income). Writing only 'to reduce credit risk' loses marks — name the duration, liquidity, capital and fee-income effects too.
What is a synthetic securitisation?
In a traditional (true-sale) securitisation the loans are physically sold to the SPV. In a synthetic securitisation the loans stay on the bank's title and the SPV instead writes a Credit Default Swap on them, so the credit risk shifts to investors while the assets never move. If a question says 'the loans were not sold but the risk was transferred,' it is describing a synthetic structure — and note the bought protection carries counterparty risk, so it is not risk-free.
Which tranche absorbs losses first, and why does it pay the highest yield?
The subordinated tranche — often the Equity or Class C tranche — absorbs the first losses from the pool, while the senior (AAA) tranche is paid cash first and takes losses last. The equity tranche earns the highest yield precisely because it is first in line for losses; that yield is compensation for risk, not a free lunch. The senior tranche only starts losing once pool losses breach its attachment point, the combined thickness of every tranche beneath it.
Studying with AI? Sia — free AI financial modeling tutor works through BANK3011 step by step.
Exam move
Treat this chapter as a concept-and-vocabulary topic rather than a calculation one — the available course materials show it is exaavailable by short-answer, with no formula-sheet calculation. Lock in two reflexes first. (1) The recourse rule: without recourse = risk to the buyer, loan off the seller's books; with recourse = risk stays with the seller (so the buyer is safest, and there is no capital relief). (2) The multi-motive answer: loan sales and securitisation manage credit risk and simultaneously affect reserves, capital/RWA, liquidity, duration and fee income — always list the lot. Then memorise the securitisation chain (pool → bankruptcy-remote SPV → marketable securities) and its four balance-sheet effects, keep repayment-risk tranching (timing of principal) separate from default-risk tranching (order of loss), and be able to run a quick tranche loss waterfall from the bottom up while quoting the senior attachment point. Finish by nailing the distinctions that carry the marks: participation vs assignment, pass-through vs CMO/CDO, and true-sale vs synthetic securitisation (loans sold vs a CDS written on loans that stay put). Use Sia to generate extra recourse and tranching short-answers and to check your reasoning step by step.
