(a) Hierarchy of approaches. Except as provided elsewhere in this section and in §3.141:

(1) A national bank or Federal savings association must deduct from common equity tier 1 capital any after-tax gain-on-sale resulting from a securitization and must apply a 1,250 percent risk weight to the portion of any CEIO that does not constitute after tax gain-on-sale;

(2) If a securitization exposure does not require deduction or a 1,250 percent risk weight under paragraph (a)(1) of this section, the national bank or Federal savings association must apply the supervisory formula approach in §3.143 to the exposure if the national bank or Federal savings association and the exposure qualify for the supervisory formula approach according to §3.143(a);

(3) If a securitization exposure does not require deduction or a 1,250 percent risk weight under paragraph (a)(1) of this section and does not qualify for the supervisory formula approach, the national bank or Federal savings association may apply the simplified supervisory formula approach under §3.144;

(4) If a securitization exposure does not require deduction or a 1,250 percent risk weight under paragraph (a)(1) of this section, does not qualify for the supervisory formula approach in §3.143, and the national bank or Federal savings association does not apply the simplified supervisory formula approach in §3.144, the national bank or Federal savings association must apply a 1,250 percent risk weight to the exposure; and

(5) If a securitization exposure is a derivative contract (other than protection provided by a national bank or Federal savings association in the form of a credit derivative) that has a first priority claim on the cash flows from the underlying exposures (notwithstanding amounts due under interest rate or currency derivative contracts, fees due, or other similar payments), a national bank or Federal savings association may choose to set the risk-weighted asset amount of the exposure equal to the amount of the exposure as determined in paragraph (e) of this section rather than apply the hierarchy of approaches described in paragraphs (a)(1) through (4) of this section.

(b) Total risk-weighted assets for securitization exposures. A national bank's or Federal savings association's total risk-weighted assets for securitization exposures is equal to the sum of its risk-weighted assets calculated using §§3.141 through 146.

(c) Deductions. A national bank or Federal savings association may calculate any deduction from common equity tier 1 capital for a securitization exposure net of any DTLs associated with the securitization exposure.

(d) Maximum risk-based capital requirement. Except as provided in §3.141(c), unless one or more underlying exposures does not meet the definition of a wholesale, retail, securitization, or equity exposure, the total risk-based capital requirement for all securitization exposures held by a single national bank or Federal savings association associated with a single securitization (excluding any risk-based capital requirements that relate to the national bank's or Federal savings association's gain-on-sale or CEIOs associated with the securitization) may not exceed the sum of:

(1) The national bank's or Federal savings association's total risk-based capital requirement for the underlying exposures calculated under this subpart as if the national bank or Federal savings association directly held the underlying exposures; and

(2) The total ECL of the underlying exposures calculated under this subpart.

(e) Exposure amount of a securitization exposure.

(1) The exposure amount of an on-balance sheet securitization exposure that is not a repo-style transaction, eligible margin loan, OTC derivative contract, or cleared transaction is the national bank's or Federal savings association's carrying value.

(2) Except as provided in paragraph (m) of this section, the exposure amount of an off-balance sheet securitization exposure that is not an OTC derivative contract (other than a credit derivative), repo-style transaction, eligible margin loan, or cleared transaction (other than a credit derivative) is the notional amount of the exposure. For an off-balance-sheet securitization exposure to an ABCP program, such as an eligible ABCP liquidity facility, the notional amount may be reduced to the maximum potential amount that the national bank or Federal savings association could be required to fund given the ABCP program's current underlying assets (calculated without regard to the current credit quality of those assets).

(3) The exposure amount of a securitization exposure that is a repo-style transaction, eligible margin loan, or OTC derivative contract (other than a credit derivative) or cleared transaction (other than a credit derivative) is the EAD of the exposure as calculated in §3.132 or §3.133.

(f) Overlapping exposures. If a national bank or Federal savings association has multiple securitization exposures that provide duplicative coverage of the underlying exposures of a securitization (such as when a national bank or Federal savings association provides a program-wide credit enhancement and multiple pool-specific liquidity facilities to an ABCP program), the national bank or Federal savings association is not required to hold duplicative risk-based capital against the overlapping position. Instead, the national bank or Federal savings association may assign to the overlapping securitization exposure the applicable risk-based capital treatment under this subpart that results in the highest risk-based capital requirement.

(g) Securitizations of non-IRB exposures. Except as provided in §3.141(c), if a national bank or Federal savings association has a securitization exposure where any underlying exposure is not a wholesale exposure, retail exposure, securitization exposure, or equity exposure, the national bank or Federal savings association:

(1) Must deduct from common equity tier 1 capital any after-tax gain-on-sale resulting from the securitization and apply a 1,250 percent risk weight to the portion of any CEIO that does not constitute gain-on-sale, if the national bank or Federal savings association is an originating national bank or Federal savings association;

(2) May apply the simplified supervisory formula approach in §3.144 to the exposure, if the securitization exposure does not require deduction or a 1,250 percent risk weight under paragraph (g)(1) of this section;

(3) Must assign a 1,250 percent risk weight to the exposure if the securitization exposure does not require deduction or a 1,250 percent risk weight under paragraph (g)(1) of this section, does not qualify for the supervisory formula approach in §3.143, and the national bank or Federal savings association does not apply the simplified supervisory formula approach in §3.144 to the exposure.

(h) Implicit support. If a national bank or Federal savings association provides support to a securitization in excess of the national bank's or Federal savings association's contractual obligation to provide credit support to the securitization (implicit support):

(1) The national bank or Federal savings association must calculate a risk-weighted asset amount for underlying exposures associated with the securitization as if the exposures had not been securitized and must deduct from common equity tier 1 capital any after-tax gain-on-sale resulting from the securitization; and

(2) The national bank or Federal savings association must disclose publicly:

(i) That it has provided implicit support to the securitization; and

(ii) The regulatory capital impact to the national bank or Federal savings association of providing such implicit support.

(i) Undrawn portion of a servicer cash advance facility.

(1) Notwithstanding any other provision of this subpart, a national bank or Federal savings association that is a servicer under an eligible servicer cash advance facility is not required to hold risk-based capital against potential future cash advance payments that it may be required to provide under the contract governing the facility.

(2) For a national bank or Federal savings association that acts as a servicer, the exposure amount for a servicer cash advance facility that is not an eligible servicer cash advance facility is equal to the amount of all potential future cash advance payments that the national bank or Federal savings association may be contractually required to provide during the subsequent 12 month period under the contract governing the facility.

(j) Interest-only mortgage-backed securities. Regardless of any other provisions in this part, the risk weight for a non-credit-enhancing interest-only mortgage-backed security may not be less than 100 percent.

(k) Small-business loans and leases on personal property transferred with recourse.

(1) Notwithstanding any other provisions of this subpart E, a national bank or Federal savings association that has transferred small-business loans and leases on personal property (small-business obligations) with recourse must include in risk-weighted assets only the contractual amount of retained recourse if all the following conditions are met:

(i) The transaction is a sale under GAAP.

(ii) The national bank or Federal savings association establishes and maintains, pursuant to GAAP, a non-capital reserve sufficient to meet the national bank's or Federal savings association's reasonably estimated liability under the recourse arrangement.

(iii) The loans and leases are to businesses that meet the criteria for a small-business concern established by the Small Business Administration under section 3(a) of the Small Business Act (15 U.S.C. 632 et seq.); and

(iv) The national bank or Federal savings association is well-capitalized, as defined in 12 CFR 6.4. For purposes of determining whether a national bank or Federal savings association is well capitalized for purposes of this paragraph (k), the national bank's or Federal savings association's capital ratios must be calculated without regard to the capital treatment for transfers of small-business obligations with recourse specified in paragraph (k)(1) of this section.

(2) The total outstanding amount of recourse retained by a national bank or Federal savings association on transfers of small-business obligations subject to paragraph (k)(1) of this section cannot exceed 15 percent of the national bank's or Federal savings association's total capital.

(3) If a national bank or Federal savings association ceases to be well capitalized or exceeds the 15 percent capital limitation in paragraph (k)(2) of this section, the preferential capital treatment specified in paragraph (k)(1) of this section will continue to apply to any transfers of small-business obligations with recourse that occurred during the time that the national bank or Federal savings association was well capitalized and did not exceed the capital limit.

(4) The risk-based capital ratios of a national bank or Federal savings association must be calculated without regard to the capital treatment for transfers of small-business obligations with recourse specified in paragraph (k)(1) of this section.

(l) Nth-to-default credit derivatives—

(1) Protection provider. A national bank or Federal savings association must determine a risk weight using the supervisory formula approach (SFA) pursuant to §3.143 or the simplified supervisory formula approach (SSFA) pursuant to §3.144 for an nth-to-default credit derivative in accordance with this paragraph (l). In the case of credit protection sold, a national bank or Federal savings association must determine its exposure in the nth-to-default credit derivative as the largest notional amount of all the underlying exposures.

(2) For purposes of determining the risk weight for an nth-to-default credit derivative using the SFA or the SSFA, the national bank or Federal savings association must calculate the attachment point and detachment point of its exposure as follows:

(i) The attachment point (parameter A) is the ratio of the sum of the notional amounts of all underlying exposures that are subordinated to the national bank's or Federal savings association's exposure to the total notional amount of all underlying exposures. For purposes of the SSFA, parameter A is expressed as a decimal value between zero and one. For purposes of using the SFA to calculate the risk weight for its exposure in an nth-to-default credit derivative, parameter A must be set equal to the credit enhancement level (L) input to the SFA formula. In the case of a first-to-default credit derivative, there are no underlying exposures that are subordinated to the national bank's or Federal savings association's exposure. In the case of a second-or-subsequent-to-default credit derivative, the smallest (n-1) risk-weighted asset amounts of the underlying exposure(s) are subordinated to the national bank's or Federal savings association's exposure.

(ii) The detachment point (parameter D) equals the sum of parameter A plus the ratio of the notional amount of the national bank's or Federal savings association's exposure in the nth-to-default credit derivative to the total notional amount of all underlying exposures. For purposes of the SSFA, parameter W is expressed as a decimal value between zero and one. For purposes of the SFA, parameter D must be set to equal L plus the thickness of tranche T input to the SFA formula.

(3) A national bank or Federal savings association that does not use the SFA or the SSFA to determine a risk weight for its exposure in an nth-to-default credit derivative must assign a risk weight of 1,250 percent to the exposure.

(4) Protection purchaser—

(i) First-to-default credit derivatives. A national bank or Federal savings association that obtains credit protection on a group of underlying exposures through a first-to-default credit derivative that meets the rules of recognition of §3.134(b) must determine its risk-based capital requirement under this subpart for the underlying exposures as if the national bank or Federal savings association synthetically securitized the underlying exposure with the lowest risk-based capital requirement and had obtained no credit risk mitigant on the other underlying exposures. A national bank or Federal savings association must calculate a risk-based capital requirement for counterparty credit risk according to §3.132 for a first-to-default credit derivative that does not meet the rules of recognition of §3.134(b).

(ii) Second-or-subsequent-to-default credit derivatives.

(A) A national bank or Federal savings association that obtains credit protection on a group of underlying exposures through a nth-to-default credit derivative that meets the rules of recognition of §3.134(b) (other than a first-to-default credit derivative) may recognize the credit risk mitigation benefits of the derivative only if:

(1) The national bank or Federal savings association also has obtained credit protection on the same underlying exposures in the form of first-through-(n-1)-to-default credit derivatives; or

(2) If n-1 of the underlying exposures have already defaulted.

(B) If a national bank or Federal savings association satisfies the requirements of paragraph (l)(3)(ii)(A) of this section, the national bank or Federal savings association must determine its risk-based capital requirement for the underlying exposures as if the bank had only synthetically securitized the underlying exposure with the nth smallest risk-based capital requirement and had obtained no credit risk mitigant on the other underlying exposures.

(C) A national bank or Federal savings association must calculate a risk-based capital requirement for counterparty credit risk according to §3.132 for a nth-to-default credit derivative that does not meet the rules of recognition of §3.134(b).

(m) Guarantees and credit derivatives other than nth-to-default credit derivatives—

(1) Protection provider. For a guarantee or credit derivative (other than an nth-to-default credit derivative) provided by a national bank or Federal savings association that covers the full amount or a pro rata share of a securitization exposure's principal and interest, the national bank or Federal savings association must risk weight the guarantee or credit derivative as if it holds the portion of the reference exposure covered by the guarantee or credit derivative.

(2) Protection purchaser.

(i) A national bank or Federal savings association that purchases an OTC credit derivative (other than an nth-to-default credit derivative) that is recognized under §3.145 as a credit risk mitigant (including via recognized collateral) is not required to compute a separate counterparty credit risk capital requirement under §3.131 in accordance with §3.132(c)(3).

(ii) If a national bank or Federal savings association cannot, or chooses not to, recognize a purchased credit derivative as a credit risk mitigant under §3.145, the national bank or Federal savings association must determine the exposure amount of the credit derivative under §3.132(c).

(A) If the national bank or Federal savings association purchases credit protection from a counterparty that is not a securitization SPE, the national bank or Federal savings association must determine the risk weight for the exposure according §3.131.

(B) If the national bank or Federal savings association purchases the credit protection from a counterparty that is a securitization SPE, the national bank or Federal savings association must determine the risk weight for the exposure according to this section, including paragraph (a)(5) of this section for a credit derivative that has a first priority claim on the cash flows from the underlying exposures of the securitization SPE (notwithstanding amounts due under interest rate or currency derivative contracts, fees due, or other similar payments.