Banking and Insurance - Laws and Practice · Risk Management in Banks and Basel Accords

Basel III Framework: Capital, Buffers, LCR and NSFR

Updated 11 October 2026 · Fact-checked

Basel III is the global bank regulation framework issued after the 2007-09 financial crisis. It raises the quantity and quality of capital, adds capital buffers, introduces a leverage ratio, and sets liquidity standards (LCR and NSFR). RBI applies it to Indian banks through its capital and liquidity circulars. Solve questions by identifying the component, applying its ratio, then concluding on compliance.

Understand Basel III Framework

Basel III is a set of standards from the Basel Committee on Banking Supervision. It was built after the global financial crisis exposed that banks held too little capital, much of it of poor quality, and too little liquid cash. Basel II mainly looked at capital against risk. Basel III keeps that base and adds stronger capital, buffers, a leverage limit and liquidity rules.

Think of it as three layers. First, better capital: banks must hold more Common Equity Tier 1 (CET1), which is equity share capital and reserves, the capital that absorbs losses while the bank keeps running. Then Additional Tier 1 (AT1) and Tier 2 capital sit below it. Second, buffers: extra capital held in good times to be used in bad times. Third, liquidity and leverage: simple backstops that do not depend on risk weights.

There are two main buffers. The Capital Conservation Buffer (CCB) is a fixed cushion of CET1 above the minimum. If a bank dips into it, restrictions on dividends and bonuses apply. The Countercyclical Capital Buffer (CCyB) is an extra CET1 buffer that the regulator can switch on when credit grows too fast, and release when the cycle turns. In India, RBI has the power to activate it, though it has not been needed in practice. Check the current RBI circular before quoting any activation.

The leverage ratio is a non-risk-based limit: Tier 1 capital divided by total exposure. It stops a bank from building huge balance sheets on thin capital even if risk weights look low. For liquidity, the Liquidity Coverage Ratio (LCR) tests whether a bank holds enough high quality liquid assets (HQLA) to survive a 30-day stress. The Net Stable Funding Ratio (NSFR) tests whether longer-term assets are funded by stable sources over one year.

In India, RBI implements Basel III through its Master Circulars and Directions on capital adequacy, leverage and liquidity. Indian rules can be stricter than the Basel minimum. For exact current percentages and phase-in dates, rely on the latest RBI directions in your study material.

Key rules to remember

Capital adequacy ratio (CRAR): CRAR = (Eligible Tier 1 + Tier 2 capital) ÷ Risk-weighted assets × 100; Risk-weighted assets cover credit, market and operational risk. Basel minimum total capital is 8% of RWA; RBI requires 9% for Indian banks, excluding buffers.
Basel minimum CET1 and Tier 1: CET1 ≥ 4.5% of RWA; Tier 1 ≥ 6% of RWA (Basel minimum); RBI's own minimum for CET1 is 5.5% and for Tier 1 is 7%. Check the latest RBI circular.
Capital Conservation Buffer: CCB = 2.5% of RWA, held in CET1; Applies on top of minimum capital. Falling into it limits dividends and bonuses.
Countercyclical Capital Buffer: CCyB = 0% to 2.5% of RWA, in CET1, set by the regulator; Activated when credit growth is excessive; it is not a permanent buffer.
Leverage ratio: Leverage ratio = Tier 1 capital ÷ Total exposure (on and off balance sheet) × 100; Basel minimum is 3%. RBI sets higher levels for some banks; confirm the current figure.
Liquidity Coverage Ratio: LCR = Stock of HQLA ÷ Total net cash outflows over next 30 days ≥ 100%; Short-term, 30-day stress test.
Net Stable Funding Ratio: NSFR = Available stable funding ÷ Required stable funding ≥ 100%; One-year structural measure; limits reliance on short-term wholesale funding.

How to solve Basel III Framework questions

Use this method for both theory and numerical case questions on Basel III. Write provision, analysis and conclusion in that order.

1Read the question and name the component being tested: capital quality, buffer, leverage, LCR or NSFR.
2State the rule in one or two lines, with the formula and the minimum standard.
3List the figures given and pick the right ones. For capital, use RWA as the base. For leverage, use total exposure. For LCR, use 30-day net outflows.
4Compute the ratio step by step and show the working.
5Compare with the requirement (Basel minimum or RBI minimum, as the question states) and say whether the bank complies.
6If a buffer is involved, state the consequence of shortfall, such as limits on dividends and bonuses.
7Conclude with practical advice: raise CET1, reduce exposure, or increase HQLA or stable funding.
8For differences or discussion questions, add a line on how RBI implements the point.

Quickest way: Ratio-first shortcut

When to use it: Use when a numerical question gives balance sheet figures and asks if a bank meets a Basel III norm.

Write the ratio name and its minimum first.
Pick numerator and denominator from the data; ignore extra figures.
Divide and convert to a percentage.
Compare with the minimum and write one line of conclusion.
For buffers, add the buffer to the minimum before comparing.

Common mistakes in Basel III Framework

Using total assets instead of risk-weighted assets for capital ratios
Students confuse the capital ratio with the leverage ratio.
Fix: CRAR, CET1 and Tier 1 ratios use RWA. Only the leverage ratio uses total exposure.
Mixing up LCR and NSFR
Both are liquidity ratios with a 100% minimum.
Fix: Remember LCR is 30 days and uses HQLA. NSFR is one year and compares stable funding available with required.
Treating the capital conservation buffer as an optional or separate capital type
The word buffer suggests it is extra and flexible.
Fix: It is CET1 held above the minimum. It can be used in stress, but doing so triggers distribution restrictions.
Saying the countercyclical buffer is always in force
Students group it with the capital conservation buffer.
Fix: It is imposed by the regulator only when credit growth is excessive and can be released later.
Quoting Basel minimums when the question asks for RBI requirements
Students memorise global figures only.
Fix: State both where you can: Basel minimum first, then the RBI requirement, which can be stricter.
Calling Basel III a law
Basel standards sound binding.
Fix: Basel norms are international standards with no legal force on their own. They bind Indian banks only through RBI directions.

Worked examples

Example 1

A bank has CET1 capital of ₹5,500 crore, additional Tier 1 capital of ₹1,000 crore and Tier 2 capital of ₹1,500 crore. Its risk-weighted assets are ₹80,000 crore. Calculate CET1 ratio, Tier 1 ratio and CRAR, and say whether it meets the Basel minimums (4.5% CET1, 6% Tier 1, 8% total).

Show the solution

CET1 ratio = 5,500 ÷ 80,000 × 100 = 6.875%.
Tier 1 capital = 5,500 + 1,000 = ₹6,500 crore.
Tier 1 ratio = 6,500 ÷ 80,000 × 100 = 8.125%.
Total capital = 6,500 + 1,500 = ₹8,000 crore.
CRAR = 8,000 ÷ 80,000 × 100 = 10%.
Compare: 6.875% > 4.5%, 8.125% > 6%, 10% > 8%.

Answer: CET1 ratio is 6.875%, Tier 1 ratio is 8.125% and CRAR is 10%. The bank meets all Basel minimums. It would still need to check the 2.5% capital conservation buffer to avoid distribution limits: CET1 needs to reach 7% under Basel (4.5% + 2.5%), so at 6.875% it falls just short of the buffer and faces restrictions on dividends and bonuses.

Example 2

A bank holds high quality liquid assets of ₹42,000 crore. Its expected cash outflows over the next 30 days are ₹60,000 crore and expected inflows are ₹20,000 crore. Compute the LCR and comment on compliance.

Show the solution

Net cash outflows = outflows − inflows = 60,000 − 20,000 = ₹40,000 crore.
LCR = HQLA ÷ net cash outflows × 100.
LCR = 42,000 ÷ 40,000 × 100 = 105%.
Requirement is at least 100%. 105% is above it.

Answer: LCR is 105%, so the bank meets the 100% requirement with a small cushion of ₹2,000 crore of HQLA. It should watch for outflow growth and keep its HQLA stock stable.

Exam tips

Write the minimum figure next to each ratio. Examiners reward the number with the formula.
For a difference question on Basel II and Basel III, use pairs: capital quality, buffers, leverage, liquidity.
In case questions, always end with a practical step such as raising CET1 or increasing HQLA.
Mention that RBI implements Basel III through its directions, and tell the examiner you rely on the latest circular for exact figures.
Show working neatly. Even a wrong final figure earns marks for correct method.

Practice questions from Risk Management in Banks and Basel Accords

Basel III Framework in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Basel III Framework: frequently asked questions

What is the difference between Basel II and Basel III?

Basel II focused on minimum capital, supervisory review and market discipline. Basel III adds higher quality capital, capital conservation and countercyclical buffers, a leverage ratio, and liquidity standards (LCR and NSFR).

What is the difference between the capital conservation buffer and the countercyclical buffer?

The capital conservation buffer is a fixed CET1 cushion of 2.5% of RWA held at all times. The countercyclical buffer is variable, up to 2.5% of RWA, and is activated by the regulator only when credit growth becomes excessive.

What are LCR and NSFR under Basel III?

LCR checks that a bank has enough high quality liquid assets to cover net outflows for 30 days of stress. NSFR checks that long-term assets are backed by stable funding over one year. Both must be at least 100%.

Is Basel III binding on Indian banks?

Basel III is an international standard and not law by itself. It becomes binding on Indian banks through RBI directions and circulars issued under its statutory powers.