APRA APS 120 Securitisation: capital treatment and operational rules

Prudential Standard APS 120 Securitisation is the APRA standard that sets how an authorised deposit-taking institution (ADI) treats securitisation for regulatory capital and operational purposes. In short: APS 120 lets an originating ADI move a pool of assets (such as residential mortgages) into a special purpose vehicle (SPV), and it determines whether the ADI may stop holding capital against that pool. It draws a clear line between "funding-only" securitisations and securitisations for "regulatory capital relief", and it sets the conditions each must meet.

The current standard is the revised APS 120 that took effect on 1 January 2018, supported by guidance in APG 120. The reform was designed to deliver, in APRA's words, clarity and simplicity. If you are searching for "aps 120 securitisation", the practical questions are usually: does my structure qualify for capital relief, what risk must I transfer, and what operational rules apply. This explainer answers those in order.

What APS 120 is and who it applies to

APS 120 applies to ADIs regulated by APRA — banks, building societies and credit unions — and principally to an ADI acting as an *originating ADI*, the institution whose assets back the securitisation. It also captures ADIs acting in other roles, such as providing facilities (liquidity, derivatives or credit enhancement) to an SPV, or holding securitisation exposures as an investor.

The standard governs how these exposures are treated for capital adequacy under APRA's broader Level 1 and Level 2 framework. Its core objectives are to ensure that:

• An ADI only obtains capital relief where it has genuinely transferred risk to third parties.
• The ADI is not exposed to undisclosed or "moral" support obligations to an SPV it has sponsored.
• Investors can clearly understand the structure they are buying into.

APS 120 is a prudential standard made under the Banking Act 1959; ADIs must comply with it as a condition of their authorisation. For the legislative basis, see the Banking Act 1959 on the Federal Register of Legislation. Securitisation also sits within the wider financial services regulatory perimeter.

Funding-only versus capital relief securitisations

The first decision under APS 120 is which of two treatments applies. An originating ADI must designate a securitisation up front and must not switch treatment after designation, with one narrow exception (moving from funding-only to capital relief, only where all the capital-relief requirements are met).

Funding-only securitisation. Here the ADI uses the structure to raise wholesale funding but is not seeking to reduce its capital requirement on the underlying credit risk. APRA's design goal is simplicity: a funding-only structure generally has a single class of non-senior securities, with no complex time or credit tranching, because the originating ADI typically retains all the non-senior securities itself. For a funding-only securitisation, the ADI is not required to hold separate regulatory capital on facilities or exposures to the SPV that relate to the pool — it continues to capitalise the underlying assets broadly as if it still held them.

Regulatory capital relief securitisation. Here the ADI seeks to remove the pool's credit risk from its capital calculation. APRA will allow this only where the ADI has transferred substantially all of the credit risk of the pool to external investors — for example by selling the junior (first-loss) class(es) to third parties. Where the operational requirements are met, the SPV is excluded from the Level 2 group.

Significant credit risk transfer

Significant credit risk transfer is the gateway to capital relief. The principle is straightforward: an ADI cannot reduce its capital for risk it still effectively bears. Capital relief is available only where the securitisation results in a genuine and substantial transfer of credit risk to parties outside the ADI's group.

In practice this means the ADI must demonstrate that the first-loss and mezzanine risk has moved to external investors, and that the ADI retains no hidden recourse. If the ADI holds back too much of the subordinated risk, or stands behind the SPV through implicit support, the transfer is not significant and capital relief is not available.

Note that APRA decided *against* a formal "skin-in-the-game" credit-risk-retention requirement of the kind seen in some overseas regimes. Australian originators are not compelled to retain a fixed percentage of each deal. The discipline instead comes from the significant-risk-transfer test and the prohibition on implicit support.

Operational requirements

APS 120 sets operational requirements (detailed in the standard's attachments) that an ADI must satisfy for its chosen treatment to hold. The recurring themes are independence, transparency and no implicit support:

• Clean break / no recourse. The transfer of assets to the SPV must be effective at law, and the ADI must not be obliged to repurchase or support assets beyond its documented, capped obligations.
• No implicit support. The ADI must not provide support to an SPV beyond its contractual commitments. Providing such support can cause APRA to require capital against the whole pool and can disqualify future deals.
• Disclosure. Offering documents must make clear the limits of the ADI's involvement, so investors are not misled into assuming recourse.
• Separation. Names, branding and arrangements must not imply that the ADI guarantees the SPV's securities.
• Designation and records. The ADI must designate the securitisation type and maintain records demonstrating ongoing compliance.

These mirror sound governance expectations across the prudential framework. Boards and risk functions should treat APS 120 compliance as an ongoing obligation, not a point-in-time sign-off at issuance.

Capital treatment of retained exposures

Even in a capital-relief deal, an ADI rarely walks away entirely. It commonly retains the senior notes, provides a liquidity facility, or holds a derivative with the SPV. APS 120 requires the ADI to hold capital against any securitisation exposures it retains or provides, calculated under the methods set out in the standard.

The capital outcome therefore depends on the *net* position: relief on the transferred risk, less capital held on retained exposures. A deal that transfers the junior risk but leaves the ADI holding a large slice of mezzanine notes may deliver limited net benefit. Modelling the retained-exposure capital before issuance is essential to knowing whether a capital-relief structure is worthwhile.

(Confirm the specific risk-weight and exposure-method calculations against the current APS 120 attachments, as these are detailed and periodically updated.)

Self-securitisation and warehouses

Two structures deserve particular attention.

Self-securitisation (internal securitisation) is where an ADI securitises its own assets and retains all the notes, principally to create collateral eligible for the Reserve Bank's liquidity facilities. Self-securitisations do not transfer risk and so do not attract capital relief; the ADI continues to hold capital on the underlying pool.

Warehouse arrangements are revolving facilities, often provided to smaller ADIs, that allow assets to be aggregated before a term deal. APRA has confirmed that warehouses may still qualify for regulatory capital relief subject to conditions, recognising their importance to funding access and competition for smaller lenders. The conditions again turn on genuine risk transfer and the absence of implicit support.

Implementation steps and common pitfalls

A workable compliance approach:

1. Designate early. Decide funding-only versus capital relief at structuring, and document it.
2. Test risk transfer. For capital relief, evidence that substantially all credit risk has moved to external investors.
3. Model retained capital. Quantify capital on retained notes, facilities and derivatives to confirm the net benefit.
4. Lock down documentation. Ensure a clean legal transfer, capped obligations and clear investor disclosure.
5. Monitor for implicit support. Build controls so the ADI never supports an SPV beyond contract.

Common pitfalls include assuming a sale automatically gives relief (it does not without significant risk transfer), underestimating capital on retained senior notes, providing informal support that taints the structure, and treating compliance as a one-off rather than continuing. Where any calculation, risk weight or threshold is uncertain, verify the current figure with APRA before relying on it.