Covered Bond Exposures¶

Eligible covered bonds are debt securities issued by credit institutions and secured by a dedicated pool of high-quality assets (the cover pool) over which bondholders have a priority claim. Under PRA PS1/26 Art. 129, covered bonds receive preferential risk weights materially below senior-unsecured exposures to the same issuer, in recognition of the dual-recourse structure (issuer + cover pool).

Definition¶

A CRR covered bond is a bond subject to special legislation protecting the bondholders against losses, where the bondholder has a priority claim on a ring-fenced cover pool in the event of issuer default. An eligible covered bond qualifies for Art. 129 preferential treatment when it meets:

• The Art. 129(1) eligible cover-pool composition rules
• The Art. 129(3) valuation requirements for any RE in the pool
• The Art. 129(7) investor disclosure / portfolio information rules

Covered bonds sit at priority 6 in the Art. 112 Table A2 exposure class waterfall — above institutions, sovereigns, and corporates but below securitisation, CIUs, subordinated debt, high-risk items, and defaults.

Eligibility — Art. 129(1)¶

An eligible covered bond must be collateralised by any of the following eligible assets (Art. 129(1)(a)–(g)):

Concentration Carve-Outs¶

The two concentration limits in (b)(vii) and (c) are the operationally most material restrictions for issuers — they determine how much non-CQS-1 sovereign-type or institution exposure can sit in the cover pool without breaching eligibility:

Art. 129(1A) carve-out from the limits: Exposures arising from the transmission and management of payments of the underlying obligors, or from the liquidation proceeds in respect of loans secured by pledged properties of the senior units or debt securities, are excluded from the calculation of the (c) institution concentration limit. This prevents pure cash-flow conduit operations from consuming the 15% institution allowance.

Other Eligibility Conditions¶

• Bondholder priority claim in the issuer's insolvency (Art. 129(2) — collateral exclusively restricted by legislation to bondholder protection).
• Cover-pool RE collateral meets:
  • Art. 208 collateral requirements (excluding the default-revaluation requirement)
  • Art. 229(1) valuation rules (excluding the prior-charges adjustment)
• Issuer makes semi-annual portfolio information available (Art. 129(7)):
  • Cover-pool value and outstanding bonds
  • Geographic distribution, asset type, loan size, interest rate, currency risk
  • Maturity structure
  • Percentage of loans > 90 days past due

Pre-2007 Legacy Bonds (Art. 129(6))¶

CRR covered bonds issued before 31 December 2007 that meet the Art. 129(7) disclosure requirements remain eligible until maturity, and are not subject to the Art. 129(1) cover-pool composition or Art. 129(3) valuation rules.

Risk Weights — Rated (Art. 129(4), Table 7)¶

Where the covered bond has a credit assessment from a nominated ECAI:

Details: See Covered Bond Exposures (Art. 129) specification for the full Table 7 spec, the BCBS deviation rationale, and code-status notes.

Risk Weights — Unrated (Art. 129(5))¶

For covered bonds without an ECAI assessment, the risk weight is derived from the issuing institution's senior-unsecured risk weight:

The Basel 3.1 expansion adds three new entries — (aa), (ab), and (ba) — to capture risk weights produced by the new ECRA Art. 120 Table 3 (CQS 2 = 30%) and the SCRA Art. 121 institution grades (Grade A enhanced 30% / Grade A 40% / Grade B 75%). CRR had only the 4-row table (a)/(b)/(c)/(d).

The institution senior-unsecured RW is determined under Art. 120 (ECRA) for rated banks or Art. 121 (SCRA) for unrated banks. If the issuing institution is itself unrated under CRR, the sovereign-derived approach (Art. 121, Table 5) provides the institution RW which then maps via Art. 129(5).

Due Diligence CQS Step-Up — Art. 129(4A)¶

Basel 3.1 Art. 129(4A) requires firms to conduct due diligence on the ECAI rating of every rated covered bond:

An institution shall conduct due diligence to ensure that the external credit assessments appropriately and prudently reflect the creditworthiness of the eligible covered bonds to which the institution is exposed. If the due diligence analysis reflects higher risk characteristics than that implied by the credit quality step of the exposure, the institution shall assign a risk weight associated with a credit quality step that is at least one step higher than the risk weight determined by the external credit assessment.

The Art. 129(4A) step-up applies parallel to Art. 120(4) (rated institutions) and Art. 122(4) (rated corporates). All three share identical drafting; CRR has no equivalent provision for any of the three classes.

CRR vs Basel 3.1 — Key Differences¶

Details: See Key Differences — Covered Bonds for the full CRR vs Basel 3.1 comparison.

Covered Bonds Issued by the Reporting Institution¶

A bank investing in its own covered bonds (or those of a connected institution) generally cannot use Art. 129 preferential treatment — the dual-recourse rationale fails when bondholder = issuer. Such positions are netted out at the consolidation boundary or treated as a deduction from own funds.

Covered Bonds Held as Cover-Pool Eligible Collateral¶

Where a CRM provider holds a covered bond as financial collateral, the bond itself can be eligible collateral under the Financial Collateral Comprehensive Method, with haircuts driven by its CQS-mapped institution debt category, not by the Art. 129 preferential RW. See Credit Risk Mitigation for haircut tables.

Calculation Examples¶

Example 1 — Rated Covered Bond, CQS 2¶

Exposure:

• £30,000,000 holding in a UK building society's residential mortgage covered bond
• Bond rated AA– → CQS 2

Calculation:

RW = 20% (Table 7, CQS 2)
RWA = 30,000,000 × 20% = 6,000,000

For comparison, a senior-unsecured exposure to the same building society at CQS 2 (institution Table 3 ECRA) would receive 30% under PRA PS1/26 — the covered bond saves 10pp of RW.

Example 2 — Unrated Covered Bond, ECRA CQS 2 Issuer¶

Exposure:

• £15,000,000 holding in an unrated covered bond
• Issuing institution is ECRA-rated CQS 2 → senior-unsecured RW = 30% (PRA PS1/26 Art. 120 Table 3)

Calculation:

Institution senior-unsecured RW = 30% → Art. 129(5)(aa) → covered bond RW = 15%
RWA = 15,000,000 × 15% = 2,250,000

This entry did not exist under CRR — under CRR, the issuer would have been at 50% institution RW (CRR Table 3), giving a 20% covered-bond RW (CRR Art. 129(5)(b)) and £3,000,000 of RWA.

Example 3 — Unrated Covered Bond, SCRA Grade A Issuer¶

Exposure:

• £20,000,000 holding in an unrated covered bond
• Issuing institution is SCRA Grade A (unrated) → senior-unsecured RW = 40% (PRA PS1/26 Art. 121)

Calculation:

Institution senior-unsecured RW = 40% → Art. 129(5)(ab) → covered bond RW = 20%
RWA = 20,000,000 × 20% = 4,000,000

Example 4 — DD Step-Up¶

Exposure:

• £50,000,000 covered bond at CQS 1 (Table 7 RW = 10%)
• Firm DD finds the cover pool's geographic concentration exceeds the firm's risk appetite — assigns DD CQS 2 (one step higher)

Calculation:

Default Table 7 RW = 10%
After Art. 129(4A) step-up: CQS 2 → RW = 20%
RWA = 50,000,000 × 20% = 10,000,000  (vs 5,000,000 without step-up)

Implementation: set due_diligence_override_rw = 0.20 on the facility, and the SA calculator applies the 20% as a directional floor.

Example 5 — Cover-Pool Concentration Breach¶

Scenario:

• Cover pool holds £100,000,000 of CQS 2 sovereign-type assets against £400,000,000 of nominal outstanding covered bonds
• Concentration: 100/400 = 25%

Outcome:

The 20% Art. 129(1)(b)(vii) limit is breached. The bond therefore fails Art. 129 eligibility entirely and reverts to standard institution treatment under Art. 120/121 — 30% (ECRA CQS 2) or the SCRA grade weight, not 20% under Table 7. The eligibility test is all-or-nothing; partial recognition of the bond at a blended weight is not permitted.

Input Schema Summary¶

Regulatory References¶

Next Steps¶

• Institution Exposures — covered bond issuer treatment
• Real Estate Exposures — for RE-backed cover pools
• CIU Exposures — funds investing in covered bonds
• Standardised Approach
• SA Risk Weights specification (Basel 3.1)