CBN Stress Tests May Trigger Fresh Capital Raising Across Banks

By Johnson Emmanuel

The Central Bank of Nigeria (CBN) has directed commercial banks to conduct a new round of stress testing designed to evaluate the resilience of their loan portfolios under adverse economic conditions.

The directive requires banks to begin the exercise on April 1, 2026, with results to be submitted to the regulator by April 30, 2026.

The stress testing framework will assess how banks’ credit portfolios respond to potential macroeconomic shocks, including commodity price declines, foreign exchange volatility, supply chain disruptions and weakening demand across key sectors.

Banks found to have insufficient capital buffers after the test will be required to raise additional capital within 18 months to close the identified shortfall.

DECISION HIGHLIGHT

The CBN has warned that banks failing the upcoming stress tests may be required to raise additional capital within 18 months to restore their capital adequacy ratios.

According to the CBN, lenders must raise 100 percent of their stressed capital shortfall or 50 percent of the regulator’s assessed shortfall, whichever is higher.

DECISION MEMO

The CBN’s stress testing directive represents the next phase of the country’s banking sector recapitalisation programme.

Since 2024, the regulator has pursued a policy aimed at strengthening the capital buffers of Nigerian banks in response to rising macroeconomic volatility and financial system risks.

While the initial phase focused on raising minimum capital thresholds across the industry, the new stress testing framework introduces a risk-based capital assessment mechanism.

The exercise will measure how banks’ loan portfolios perform under simulated economic stress scenarios.

The CBN said that the test will evaluate the impact of adverse shocks on key financial indicators including Non-Performing Loans, loan loss provisions, and Capital Adequacy Ratio.

Banks will be required to report Pre-Stress Capital Adequacy Ratio, Post-Stress Capital Adequacy Ratio, and any resulting capital shortfalls.

If a bank’s capital adequacy falls below regulatory requirements under the stress scenario, the institution will be required to raise additional capital within 18 months.

The regulator indicated that the new capital requirement will remain binding until the next cycle of stress testing.

The stress testing framework also introduces stricter scrutiny of insider-related credit exposures.

Loans linked to directors and related parties must be treated as defaulted under the severe stress scenario, requiring full provisioning during the test.

This requirement reflects growing regulatory attention to governance risks and credit concentration within banking institutions.

The stress simulation will assume that credit exposures deteriorate progressively over a 12-month period, migrating through the classification stages of performing, watchlist, substandard, doubtful and lost.

The directive arrives as Nigerian banks approach the final stage of the industry’s recapitalisation exercise, with the March 31 deadline for meeting revised minimum capital requirements.

The CBN previously disclosed that 30 banks have already met the new capital thresholds through equity issuance, private placements and other capital market transactions.

The stress testing framework therefore introduces a second layer of capital discipline that focuses not only on balance sheet size but also on risk resilience.

DATA BOX

Stress test start date: April 1, 2026

Submission deadline for results: April 30, 2026

Capital shortfall remediation period: 18 months

Stress simulation period for credit deterioration: 12 months

Banks that have met recapitalisation threshold: 30

Key metrics evaluated:

Non-Performing Loans (NPLs)
Loan loss provisions
Capital Adequacy Ratio (CAR)

Credit risk migration stages:

Performing
Watchlist
Substandard
Doubtful
Lost

WHO WINS / WHO LOSES

Well-capitalised banks with diversified loan portfolios may benefit from stronger investor confidence following the stress testing exercise.

Capital markets may also benefit as banks potentially return to equity markets to raise additional capital.

However, banks with weaker capital buffers or high concentrations of risky credit exposures could face pressure to raise funds under tight timelines.

POLICY SIGNALS

The directive signals the CBN’s continued focus on financial system stability and prudential risk management.

The regulator appears to be moving toward a supervisory model that combines capital requirements with forward-looking risk stress assessments.

The policy also reflects increased regulatory attention to governance-related credit exposures and insider lending risks.

INVESTOR SIGNAL

The stress testing framework may trigger additional capital raising across the banking sector, potentially creating new equity and debt issuance opportunities in Nigerian capital markets.

Investors may increasingly differentiate banks based on risk-adjusted capital strength rather than balance sheet size alone.

Institutions with strong capital buffers and stable loan portfolios may attract stronger investor demand.

RISK RADAR

Macroeconomic volatility remains a major risk factor affecting banks’ loan portfolios, particularly in sectors exposed to commodity price fluctuations and foreign exchange movements.

Credit concentration and insider lending exposures could also amplify stress outcomes for some institutions.

Finally, if several banks simultaneously require capital raising after the tests, market absorption capacity may become a constraint for new equity issuances.