---
title: "Capital Conservation Buffer: definition, formula, and thresholds"
description: "The Capital Conservation Buffer (CCB) is a 2.5% layer of CET1 capital that sits on top of the Basel III minimums. Banks operating inside the buffer face automatic restrictions on dividends, share buybacks, and discretionary bonuses."
canonical_url: https://www.bankregreports.com/glossary/capital-conservation-buffer/
source: BankRegReports
category: "Capital"
units: "%"
schedule: "Schedule RC-R"
---

# Capital Conservation Buffer

> The Capital Conservation Buffer (CCB) is a 2.5% layer of CET1 capital that sits on top of the Basel III minimums. Banks operating inside the buffer face automatic restrictions on dividends, share buybacks, and discretionary bonuses.

## Formula

```
CCB requirement: CET1 ratio ≥ 4.5% + 2.5% = 7.0%
```

The CCB is not a separate ratio. It is an additional cushion of CET1 that each bank must hold beyond the 4.5% CET1 minimum. The same 2.5% buffer applies on top of the Tier 1 (6.0% + 2.5% = 8.5%) and Total Capital (8.0% + 2.5% = 10.5%) minimums.

## Why it matters

Operating inside the buffer doesn't make a bank undercapitalized. But it does limit the bank's ability to return capital. The deeper a bank dips into the buffer, the more severe the payout restriction: a bank with CET1 just above 4.5% can distribute almost nothing. The CCB is how regulators discourage capital depletion during stress without forcing immediate failure resolution.

## How to read it

Healthy banks operate at least 100-200 bps above the buffer-included minimum (so above 9% CET1 for normal banks; higher for G-SIBs). Between 7% and 9% the bank meets the buffer and faces no regulatory payout limit, though the cushion is thin; below 7% the payout limits of 12 CFR 324.11 (217.11 at the Federal Reserve) apply.

## Thresholds

| Range | Reading | What it means |
|---|---|---|
| ≥ 9% CET1 | Above buffer | Unrestricted capital distributions. |
| 7–9% CET1 | Buffer met | No regulatory payout limit; thin management cushion. |
| 5.75–7% | Restricted | Maximum payout ratio limited. |
| < 5.75% | Severely restricted | Approaching the 4.5% hard minimum. |


## Worked example

A community bank with 8.2% CET1 is 3.7 points above the 4.5% minimum: the full 2.5-point buffer plus 1.2 points of cushion. No regulatory payout limit applies, but with only 120 bps above the 7.0% buffer line it has little room to absorb losses before limits on dividends, buybacks and discretionary bonuses would begin.

## Questions

### Is the capital conservation buffer separate from the stress capital buffer?

For large banks subject to the Comprehensive Capital Analysis and Review (CCAR) stress tests, the CCB is replaced by the Stress Capital Buffer (SCB), which floors at 2.5% but can exceed it based on stress-test results.

### What happens if a bank falls into the buffer?

Section §217.11 caps the bank's eligible payout ratio: dropping deeper into the buffer caps dividends, buybacks, and bonuses at a progressively smaller share of net income for the prior four quarters.

### Does CBLR have a capital conservation buffer?

No. CBLR is a single 8% threshold (9% before July 1, 2026) with a grace period of up to four quarters down to 7%. The buffer architecture only applies to banks using the standard risk-based framework.

## Sources

- [12 CFR §217.11: Federal Reserve capital conservation buffer requirements](https://www.ecfr.gov/current/title-12/part-217)
- [12 CFR §324.11: FDIC parallel rule](https://www.ecfr.gov/current/title-12/part-324)

## Related metrics

- [Common Equity Tier 1 Capital Ratio](https://www.bankregreports.com/glossary/cet1-ratio/): The CET1 ratio measures a bank's highest-quality capital (common stock and surplus, retained earnings and, for banks that have not opted out, accumulated other comprehensive income, less regulatory deductions) against its risk-weighted assets. It is the most-watched single capital indicator in US bank supervision after the 2013 Basel III reforms.
- [Stress Capital Buffer](https://www.bankregreports.com/glossary/stress-capital-buffer/): The Stress Capital Buffer (SCB) is a bank-specific CET1 buffer derived from the Federal Reserve's annual stress test. It replaces the static 2.5% capital conservation buffer for the largest banks and floors at 2.5%.
- [Tier 1 Risk-Based Capital Ratio](https://www.bankregreports.com/glossary/tier1-rbc/): The Tier 1 Risk-Based Capital ratio measures a bank's Tier 1 capital (CET1 plus Additional Tier 1 instruments) against its risk-weighted assets. It is the broader of the two Tier-1 capital measures and is still the headline capital metric for most banking comparisons.
- [Total Risk-Based Capital Ratio](https://www.bankregreports.com/glossary/total-rbc/): The total risk-based capital ratio is a bank's total regulatory capital (tier 1 plus tier 2) divided by its risk-weighted assets. US rules require at least 8%, 10% to be well capitalized, and 10.5% including the capital conservation buffer.

## About this document

This is the markdown twin of the page named in `canonical_url` above. Source filings are public record; the cleaning, normalization, cross-source linkage, and derived metrics are BankRegReports' own. Attribute with a link to the canonical URL.

Markdown twins are published for editorial content only. Institution data pages do not have them. For data at scale use the API, which is documented at https://www.bankregreports.com/api/ and specified at https://www.bankregreports.com/openapi.json. It returns typed JSON with explicit units and periods, and one call replaces hundreds of page fetches.


## Sitemap

- [Glossary](https://www.bankregreports.com/glossary/): every metric, with formula and thresholds
- [Blog](https://www.bankregreports.com/blog/): analysis and explainers
- [API documentation](https://www.bankregreports.com/api/): the programmatic way to get this data
- [XML sitemap](https://www.bankregreports.com/sitemap.xml): the complete crawlable index