Basel III Implementation by 2027: What the BCBS Tally Leaves Out

The Basel Committee on Banking Supervision (BCBS) reported on 5 October 2026 that three quarters of its 27 member jurisdictions have published rules adopting the final Basel III standards, and that almost all of them have publicly announced that banks must apply Basel III by April 2027 or earlier. The figures come from the Committee’s latest Basel III implementation progress update, which records adoption status as of 30 September 2026 and sits alongside the Regulatory Consistency Assessment Programme (RCAP) dashboard.

The headline hides the part that matters for anyone producing capital returns. Final Basel III is fully implemented in 47% of member jurisdictions. The revised credit risk and operational risk standards and the output floor are effective in around 85% of them, the CVA standard in nearly 70%, and the revised market risk standards in more than 40%.

Market risk is the laggard, and 2027 is when that gap reaches the templates. The EU applies the Fundamental Review of the Trading Book (FRTB) own funds requirements from 1 January 2027 under a three-year relief package. The UK’s Basel 3.1 rules take effect the same day, with the new market risk internal model approach held back to 1 January 2028. The US re-proposal of 19 March 2026 has no final effective date on the public record as of 6 October 2026.

For a group that reports in more than one of these jurisdictions, the result in 2027 is several capital calculations for the same trading book, on different reference dates and in different templates. The BCBS tally shows which members have published rules. The domestic instrument decides what each entity files and when.

Related reading: Basel III Monitoring June 2025: Where the Capital Impact Sits

Basel III implementation dates that set the 2027 reporting calendar

The dates below are the ones a prudential reporting team can plan against. The BCBS rows describe the international standard, which binds banks only once a jurisdiction writes it into domestic rules. The EU and UK rows come from adopted law, final rules or the EBA’s published guidance.

The US has no row. The three capital proposals the US agencies issued on 19 March 2026 closed for comment on 18 June 2026, and the Federal Reserve’s list of 2026 press releases shows no final rule from that package as of 6 October 2026.

Reading the BCBS tally: published, effective and complete are three different counts

The October update measures three things, and they move at different speeds. It covers the final Basel III elements published in December 2017 and the minimum capital requirements for market risk finalised in January 2019. The Committee’s implementation date for both was 1 January 2023, set when the Group of Governors and Heads of Supervision (GHOS) deferred the original timetable in March 2020.

Since the Committee’s previous summary as of end-September 2025, three jurisdictions have published additional Basel III standards. The Committee expects implementation of the final standards to be nearly complete by the first half of 2027 and states that, with few exceptions, all members have publicly announced that banks must apply the standards by April 2027 or earlier. The release does not name the exceptions.

An output floor counted as effective can still be running at a transitional factor well below 72.5%. Under the BCBS phase-in as amended in March 2020, the floor starts at 50% on 1 January 2023, rises by five percentage points a year to 70% in 2027 and reaches 72.5% from 1 January 2028. During the phase-in, supervisors may cap the resulting increase in a bank’s RWA at 25% at national discretion. A member that started later runs its own clock, which is why the EU factor for 2027 is 60% while the BCBS schedule reads 70%.

Publication and application can also sit a year apart. The PRA published its final Basel 3.1 rules in PS1/26 on 20 January 2026, and they take effect on 1 January 2027. For jurisdiction-level detail, the RCAP dashboard lists each member’s domestic regulations with their publication and implementation dates, and the Committee publishes the full implementation history as a downloadable Excel file. At its meeting of 9 March 2026, the GHOS reaffirmed its expectation of full and consistent implementation by all members as soon as possible and tasked the Committee with continuing to monitor it.

FRTB in the EU from 1 January 2027: the relief package and what lands in COREP

How the EU reached 1 January 2027

Regulation (EU) 2024/1623 (CRR3) applies from 1 January 2025 and turned the FRTB standards into binding own funds requirements. The market risk part was then deferred twice under the Commission’s power in Article 461a(2) of the CRR. Delegated Regulation (EU) 2024/2795 moved it to 1 January 2026, and Delegated Regulation (EU) 2025/1496 moved it to 1 January 2027. Until that date, Article 520a of the CRR keeps institutions on Part Three, Title IV and the market risk requirements of Articles 430, 430b, 445 and 455 in the version in force on 8 July 2024.

The third act changes the substance. Commission Delegated Regulation (EU) 2026/1221 of 4 June 2026, published in the Official Journal on 11 September 2026, applies from 1 January 2027. It inserts temporary targeted operational relief measures and targeted multipliers into the CRR for three years, until 31 December 2029. Its recitals cite delays and deviations in the jurisdictions with many internationally active banks as the reason. Our note on the EU Basel III market risk adjustments and the FRTB multiplier covers how the relief measures are built.

The overall multiplier under Article 495v

The relief that matters most for reporting is the overall multiplier in Article 495v of the CRR. The EBA’s note of 3 August 2026 on applying the FRTB from 1 January 2027 sets out how eligibility works. An institution qualifies only if its own funds requirements for market risk under the FRTB approaches at the 31 March 2027 reference date, after the transitional measures of Articles 495i to 495t, exceed the requirements calculated under the CRR2 standardised approach and CRR2 internal models. Article 495v(2) excludes institutions that calculate their own funds requirements for market risk using only the simplified standardised approach in Articles 326 to 361.

The multiplier is neither mandatory nor automatic. An eligible institution notifies its competent authority and proves eligibility under Article 495v(3), and it can only start applying the multiplier from Q1 2027. The EBA recommends submitting the notification as soon as possible after the reference date and well before 12 May 2027, the remittance date for the 31 March 2027 reference date under Implementing Regulation (EU) 2024/3117.

Article 495v(5) recalibrates the multiplier every quarter. Institutions using it therefore keep both the CRR2 and the FRTB calculation chains in production for as long as they want to remain eligible. The relief lowers the capital number and adds a second calculation chain to every quarter-end.

Which templates carry which number

The EBA expects revised market risk reporting requirements to apply from the second half of 2027, through the amending ITS whose market risk module it consulted on in EBA/CP/2026/07. Until then, it asks institutions to fit the revised framework into the templates already in use:

• Institutions applying the overall multiplier report CRR2 own funds requirements in C 18.00 to C 23.00 (standardised approach) and C 24.00 (internal models), and report the FRTB alternative standardised approach in C 91.00, reflecting the other relief measures but excluding the overall multiplier. C 02.00 shows only the risk-weighted exposure amount under CRR2 after the multiplier.
• For institutions not applying the overall multiplier, the EBA’s interim guidance sets out how the FRTB requirements should be reflected in the reporting templates already in use pending application of the revised market-risk reporting ITS.

The EBA’s interim guidance also addresses how the Article 495s(1) sensitivities-based-method multiplier should be reflected in C 91.00 pending application of the revised market-risk reporting ITS.

The legacy templates survive into 2027 for a reason. Implementing Regulation (EU) 2025/2475 of 8 December 2025 kept market risk reporting under Article 5(12) of Implementing Regulation (EU) 2021/451 until 31 December 2026, and repeals 2021/451 with effect from that date. The EBA’s interim guidance then keeps C 18.00 to C 24.00 in use for multiplier users because the revised ITS is not yet in place. Reading the relief as a quiet Q1 2027 for COREP gets it backwards for multiplier users, who file two market risk pictures from the first FRTB quarter.

The trading book boundary and its reporting

The EBA’s no-action letter of 3 August 2026 deals with the FRTB boundary between the trading book and the non-trading book. It advises competent authorities not to prioritise supervisory or enforcement action on the FRTB boundary provisions until the earlier of 31 December 2029 and the date of application of a CRR amendment clarifying them. It records that the Commission’s Communication of 17 July 2026 confirmed the intention to put forward a legislative proposal in the first quarter of 2027. Institutions applying the multiplier calculate on the CRR2 boundary, and the EBA, following the Commission’s questions and answers, considers that institutions not using the multiplier should be allowed to do the same. Our coverage of the EBA FRTB no-action letter on the market risk boundary goes through the eligibility test in more detail.

The reporting consequence is narrow and easy to miss. Article 24(2) of Implementing Regulation (EU) 2024/3117 starts the reporting on trading book composition and reclassifications between books once the FRTB approaches apply, and the EBA reads that as the 31 March 2027 reference date. The same letter asks supervisors not to prioritise enforcement of that reporting requirement until the earlier of 31 December 2029 and an amendment aligning its start date with the boundary’s application for own funds purposes. My reading is that a de-prioritised requirement remains a requirement, so the safer course is to confirm with the competent authority whether it expects those templates from March 2027.

Supervisory benchmarking follows the same split. Institutions using the overall multiplier keep CRR2 internal models in use and are expected to take part in the CRR2 internal model part of the market risk benchmarking exercise. Institutions on the FRTB alternative standardised approach join the exercise from 2027, and FRTB internal model benchmarking is suspended until adoption by EU banks is clearer. The EBA’s consultation on the 2027 market-risk benchmarking ITS proposes changes to the population and timetable for the exercise; those consultation proposals should not be treated as final requirements until the ITS is adopted.

The output floor runs on national clocks

The output floor is counted as effective in around 85% of BCBS members, but the factor a bank applies depends on when its jurisdiction started. The comparison below sets the BCBS phase-in against Article 465(1) of the CRR for EU institutions.

The EU layer adds its own transitionals on top of the factor. Article 465(2) offers a transitional formula for calculating TREA until 31 December 2029. Article 465(3) allows a 65% risk weight in the standardised calculation used for the floor for unrated corporates whose IRB probability of default estimate is no greater than 0.5%, until 31 December 2032. Article 465(5) lets Member States allow a preferential residential mortgage treatment, subject to the conditions in Article 465(8): a 10% risk weight on the part of the exposure up to 55% of the property value until 31 December 2032, and, where the Article 501 adjustment to own funds requirements for credit risk is not applied, a 45% risk weight on the remaining part up to 80% until 31 December 2029, which Article 465(9) then steps up to 52.5% in 2030, 60% in 2031 and 67.5% in 2032.

A comparison of floored ratios across a group, or against the BCBS monitoring figures, has to name the factor it uses. The Basel III monitoring exercise reports a transitional and a fully phased-in view of final Basel III. The fully phased-in view assumes every phase-in arrangement has already expired and, once a bank’s national implementation applies, reflects the national rules for that bank and topic. Our guide to the CRR3 output floor phase-in covers where the floor sits in C 02.00. In the UK, the Bank of England’s December 2025 assessment of capital requirements states that the PRA will review the application of the Basel 3.1 output floor at the ring-fenced sub-group level after Basel 3.1 is implemented and before the floor reaches full weighting in 2030.

UK Basel 3.1 on 1 January 2027: final rules with one market risk carve-out

The UK runs on a separate legal track. UK firms apply the PRA Rulebook, so neither CRR3 nor the EU’s market risk delegated acts reach a UK entity.

PS1/26, published on 20 January 2026, contains the final PRA Rulebook instruments, supervisory statements, statements of policy and the disclosure and reporting templates for Basel 3.1. The policy takes effect on 1 January 2027, and the internal model approach for market risk comes into effect on 1 January 2028. When the Bank of England announced that split in July 2025, it said the 1 January 2027 date covers approximately 90% of risk-weighted assets and that firms with internal model permission can keep using their existing models until 31 December 2027. The simplified capital regime for Small Domestic Deposit Takers, finalised in PS4/26 on 20 January 2026, also takes effect on 1 January 2027.

The model track is still moving. In CP9/26, published in June 2026, the PRA proposed adjustments to the Basel 3.1 internal model approach for market risk. Its cost-benefit analysis records limited planned adoption of the new internal model approach among firms currently using market-risk internal models. The same analysis cites the EU’s temporary changes and the US agencies’ revised proposal of 19 March 2026 as context. Our breakdown of the PRA Basel 3.1 market risk IMA adjustments covers the proposals themselves.

Reporting changes share the start date. PS15/26, the PRA’s Pillar 2A review phase 1, amends the Reporting Pillar 2 Part from 1 January 2027. Data items FSA077 and FSA082 are deleted. For firms other than Small Domestic Deposit Takers (SDDTs) and SDDT consolidation entities, FSA076 is narrowed to standardised approach exposures of three kinds: central government and central bank exposures risk-weighted under regulation 6(1) of HM Treasury’s Overseas Prudential Requirements Regime regulations (OPRR), regional government and local authority exposures risk-weighted under regulation 6(3) of OPRR, and certain non-SME off-balance sheet items carrying a 10% conversion factor. Rule 2.7A extends the first two kinds to the part of an exposure covered by unfunded credit protection from a central government, central bank, regional or local authority that the firm recognises under the risk-weight substitution method, and to a collective investment undertaking’s underlying exposures to those bodies where the firm uses the look-through approach.

Those OPRR references come from the instrument published with the PRA’s PS16/26 (PRA2026/19, made 2 July 2026, in force 1 January 2027), which replaces the rule’s earlier Article 114(7) and Article 115(4) CRR cross-references. In early October 2026, legislation.gov.uk still listed HM Treasury’s OPRR regulations as a draft statutory instrument. The PRA made its rules on the understanding that the instrument will be made and in force before 1 January 2027, and said it would amend or revoke them as necessary if the instrument is amended before being made or is not made.

The operational risk items FSA072 to FSA075 continue to apply to significant firms, unless the data have already been reported to the PRA by other means. Other firms may also be required to submit those data where the PRA requests them and notifies the firm in advance.

A UK subsidiary of an EU group therefore enters 2027 with a new capital framework, a shorter list of Pillar 2 data items and, if it trades under a model permission, one further year on its existing models.

United States: three proposals and no final date

On 19 March 2026 the Federal Reserve Board, the FDIC and the OCC requested comment on three proposals. The first, for the largest and most internationally active banks, would implement the final components of the Basel III agreement while enhancing risk sensitivity and reducing burden. The second would better align capital requirements for traditional lending at most other banks. The third, from the Federal Reserve alone, concerns how systemic risk is measured for the additional capital requirement on the largest and most complex banks. Comments were due by 18 June 2026, and the agencies said they anticipate that overall capital in the banking system would modestly decrease.

As of 6 October 2026, the Federal Reserve’s list of 2026 press releases shows no final rule from that package; its 30 September 2026 release finalised changes to its stress test. The BCBS release names no member as an exception to the April 2027 horizon, so the US position is best read from the RCAP dashboard and the agencies’ own publications. Inferring it from the headline percentage tells you nothing about a specific member.

A proposal changes no current US return. US banking subsidiaries of EU or UK groups keep filing under the US capital rules in force until a final rule sets its own effective date, which leaves the US line of a group’s Basel III calendar as the one that cannot yet be dated.

Building an entity-level Basel III calendar from the RCAP dashboard

The RCAP dashboard is a monitoring tool, and it is also a practical starting index for a group with entities outside the EU and UK. It records each member’s domestic regulations with publication and implementation dates, standard by standard. Switzerland shows how early some members moved: the Federal Council confirmed on 26 June 2024 that the amendment to the Capital Adequacy Ordinance implementing final Basel III would enter into force on 1 January 2025.

In my view a workable calendar needs three entries per legal entity:

• the domestic instrument and its application date for each Basel III component, with market risk kept as a separate line;
• the consolidation level at which each requirement applies, including any Member State choice not to apply the EU output floor below the highest level of consolidation in that Member State;
• the first reference date and remittance date under the local reporting rules, which is where a 1 January application date turns into a filing deadline.

The BCBS’s own data collection continues alongside the domestic returns. The Basel III monitoring exercise as of 31 December 2025 covered 149 banks, including 106 Group 1 banks (Tier 1 capital above EUR 3 billion and internationally active), 29 of them G-SIBs. Because a significant number of banks were already subject to national implementation of final Basel III by June 2025, the Committee discontinued its topic-specific impact analyses for every topic except market risk, where the impact generally remains non-zero for banks whose jurisdiction implements the revised market risk framework later.

Frequently Asked Questions

Our EU bank starts using the Article 495v multiplier in Q1 2027. What happens if its FRTB requirement later falls below the CRR2 figure?

According to the EBA’s 3 August 2026 note, an institution that started applying the overall multiplier from March 2027 can keep applying it even if the FRTB requirement falls below the CRR2 requirement for one or more reference dates. The condition is that it keeps performing both calculations for as long as it wants to remain eligible, and under Article 495v(4) it notifies its competent authority before it stops applying the multiplier. Article 495v(4) also provides that an institution that stops applying the multiplier cannot apply it again later.

We hold a CRR2 internal model permission for market risk. Do we need to apply to keep it in 2027?

The EBA states that CRR2 internal model permissions expire automatically, with no withdrawal request or approval needed, unless the institution is eligible for the overall multiplier and notifies its competent authority that it wishes to continue using those models to apply the multiplier.

Does using the multiplier change our Pillar 3 market risk disclosures?

Yes. Article 495v(7) requires an institution to disclose that it applies the multiplier and to publish the CRR2 version of the market risk disclosures in addition to the CRR3 version. Until Implementing Regulation (EU) 2024/3172 is amended, the EBA suggests showing FRTB figures before the overall multiplier in EU MR1, EU MR2 and EU MR3, while OV1, KM1 and CMS1 reflect the full effect of the delegated act, multiplier included, with a narrative explaining the choice.

Does every EU entity in our group apply a 60% output floor factor in 2027?

The factor in Article 465(1) is a transitional option institutions may apply, and the floor itself can be switched off below the top of the group in some Member States. Under the second subparagraph of Article 92(3) of the CRR, a Member State may decide that institutions which are part of a group with a parent institution in the same Member State use the un-floored total risk exposure amount, provided that parent institution (or, for groups of a central body and permanently affiliated institutions, the whole constituted by them) applies the output floor on a consolidated basis. Check the national choice before mapping solo returns.

Does the BCBS progress update itself create a reporting obligation?

No. Basel standards reach banks only through domestic law, such as the CRR and its implementing technical standards in the EU or the PRA Rulebook in the UK. The update is a monitoring publication; the filing obligations, templates and dates come from the domestic instruments it tracks.

Our UK entity uses internal models for market risk today. Which approach applies during 2027?

Under the PRA’s split implementation, firms with internal model permission can continue to use their existing internal models until 31 December 2027, and the new internal model approach comes into effect on 1 January 2028. The rest of Basel 3.1, including the new standardised approaches, applies from 1 January 2027.

Related Articles

• Basel III Monitoring June 2025: Where the Capital Impact Sits: what the BCBS monitoring data as of 30 June 2025 showed about the capital impact of final Basel III.
• EU Basel III Market Risk Adjustments: The FRTB Multiplier for Trading Book Capital: the EU delegated act of 4 June 2026 and what banks map in COREP.
• EBA FRTB No-Action Letter: The 31 March 2027 Multiplier Eligibility Test: the EBA’s supervisory priorities on the trading book boundary and its reporting.
• CRR3 Output Floor Phase-In 2026: how the EU output floor transitionals work and where they appear in COREP.
• PRA Basel 3.1 Market Risk IMA Adjustments: the PRA’s CP9/26 proposals for UK banks using internal models.
• COREP Reporting Explained: a practical guide to the EU prudential reporting templates referenced here.

Key Takeaways

• Treat the 31 March 2027 COREP cycle as the EU market risk go-live: the Article 495v eligibility test runs on that quarter only, and the multiplier notification is due without delay, with the EBA recommending it well ahead of the 12 May 2027 remittance.
• Budget for parallel CRR2 and FRTB market risk runs every quarter for as long as an institution applies the overall multiplier, which is available only until 31 December 2029.
• Get a written position from the competent authority on trading book composition and reclassification templates for March 2027, given the EBA’s enforcement de-prioritisation.
• Move UK entities onto the PS1/26 rules and templates for periods from 1 January 2027, and drop FSA077 and FSA082 from the Pillar 2 data-item schedule.
• Keep US subsidiaries on current capital rules and recheck the agencies’ releases each quarter until a final rule fixes a date.
• State the floor factor whenever capital ratios are compared across jurisdictions: 60% for EU institutions in 2027 against 70% in the BCBS schedule.

Sources and References

• Bank for International Settlements, media release, Basel III applicable in almost all member jurisdictions by 2027 (5 October 2026): bis.org
• Basel Committee on Banking Supervision, Implementation: Regulatory Consistency Assessment Programme, Basel III adoption progress summary (September 2026): bis.org/committees/bcbs/rcap
• BCBS, RCAP dashboard: bis.org/committees/bcbs/rcap-dashboard
• GHOS, media release of 9 March 2026 on progress in implementing Basel III: bis.org
• GHOS, deferral of Basel III implementation (27 March 2020): bis.org
• BCBS, Basel III: Finalising post-crisis reforms (December 2017): bis.org
• BCBS, Minimum capital requirements for market risk (January 2019): bis.org
• BCBS, Basel III Monitoring Report (September 2026): PDF
• BCBS, Basel III monitoring methodology (March 2026 report): PDF
• Regulation (EU) 2024/1623 (CRR3), including Article 465 and Article 2 on application: EUR-Lex
• Commission Delegated Regulation (EU) 2025/1496 on the date of application of the own funds requirements for market risk: EUR-Lex
• Commission Delegated Regulation (EU) 2026/1221 on temporary targeted operational relief measures and targeted multipliers for market risk: EUR-Lex
• Commission Implementing Regulation (EU) 2024/3117 on supervisory reporting: EUR-Lex
• Commission Implementing Regulation (EU) 2025/2475 amending Implementing Regulation (EU) 2024/3117 as regards operational risk reporting: EUR-Lex
• Regulation (EU) No 575/2013 (CRR): EUR-Lex
• Commission Delegated Regulation (EU) 2024/2795 on the date of application of the own funds requirements for market risk (first deferral, to 1 January 2026): EUR-Lex
• Commission Implementing Regulation (EU) 2021/451 on supervisory reporting of institutions: EUR-Lex
• Commission Implementing Regulation (EU) 2024/3172 on public disclosures by institutions (Part Eight, Titles II and III, CRR): EUR-Lex
• EBA, consideration on the application of the FRTB from 1 January 2027 (3 August 2026): PDF
• EBA, no-action letter on the boundary in the context of the third FRTB delegated act (3 August 2026): PDF
• EBA, consultation paper EBA/CP/2026/11 on the 2027 market risk benchmarking exercise (17 July 2026): PDF
• PRA, PS1/26 Implementation of Basel 3.1: Final rules (20 January 2026): bankofengland.co.uk
• Bank of England, news release on measures to promote banking resilience (July 2025): bankofengland.co.uk
• PRA, PS4/26 The Strong and Simple Framework: the simplified capital regime for Small Domestic Deposit Takers (SDDTs) (20 January 2026): bankofengland.co.uk
• PRA, PS15/26 Pillar 2A review: Phase 1 (May 2026): bankofengland.co.uk
• PRA, CP9/26 Appendix 1, cost-benefit analysis of the market risk internal model approach proposals (June 2026): PDF
• PRA, PS15/26 Appendix 2, Reporting Pillar 2 (Amendment) Instrument 2026: PDF
• PRA, PS16/26 Appendix 1, PRA Rulebook: CRR Firms: Overseas Prudential Recognition Regime Instrument 2026 (PRA2026/19), amending Reporting Pillar 2 rule 2.7 from 1 January 2027: PDF
• PRA Rulebook, Reporting Pillar 2 Part, version effective 1 January 2027 (rules 2.3, 2.7 and 2.7A): prarulebook.co.uk
• PRA, PS16/26 PRA rule changes to accommodate HM Treasury’s Overseas Prudential Requirements Regime (14 July 2026): bankofengland.co.uk
• Draft Overseas Prudential Requirements Regime (Credit Institutions and Investment Firms) Regulations 2026 (draft statutory instrument): legislation.gov.uk
• Bank of England, Financial Stability in Focus: the FPC’s assessment of bank capital requirements (December 2025): PDF
• Federal Reserve Board, FDIC and OCC, Agencies request comment on proposals to modernize the regulatory capital framework (19 March 2026): federalreserve.gov
• Federal Reserve Board, 2026 press releases: federalreserve.gov
• Swiss Federal Council, media release confirming implementation of the final Basel III standard from 1 January 2025 (26 June 2024): admin.ch

Planning around the first FRTB quarter

The BCBS will keep publishing its tally, and by mid-2027 the headline percentages should look close to complete. The filing dates sit elsewhere.

For EU trading banks the first hard date is the 31 March 2027 reference date. An institution choosing the multiplier must notify its competent authority without delay and provide evidence of eligibility; the EBA recommends doing so as soon as possible after the reference date and well before the 12 May 2027 remittance. For UK entities it is 1 January 2027, with the market risk model switch on 1 January 2028. For US banking subsidiaries no date exists yet, so the next action is to check the RCAP dashboard entry and the US agencies’ releases each quarter until a final rule sets one.

Disclaimer: The information on RegReportingDesk.com is for educational and informational purposes only. It does not constitute legal, regulatory, tax, or compliance advice. Always consult your compliance officer, legal counsel, or the relevant supervisory authority for guidance specific to your institution.