An in-depth evaluation of top-tier Tanzanian commercial banks, auditing net interest margin trends, deposit franchise stability, and sustainable dividend payouts.
Executive Overview
Commercial banks listed on the Dar es Salaam Stock Exchange (DSE) remain an important component of Tanzania’s equity market and wider financial system. Supported by expanding loan books, deposit growth and improving asset quality, leading banking groups have continued to report strong profitability while maintaining capital buffers above regulatory requirements.
The latest Bank of Tanzania Financial Stability Report shows that the banking sector’s gross non-performing loan ratio declined to 2.8% at the end of 2025, compared with 3.3% a year earlier. Core capital stood at 18.8% of total risk-weighted assets, against a regulatory threshold of 10%, while the total capital ratio reached 19.7%, above the 12% minimum. Sector return on equity remained healthy at 20.6%.
This report applies Layer 2 — Corporate Fundamentals & Cash Flow Quality — of the Origin Core framework to examine balance-sheet durability, credit quality, operating efficiency and capital strength across leading DSE-listed banking institutions, with reference to audited disclosures from NMB Bank and CRDB Bank.
1. Macro-Prudential Environment and Monetary Policy Alignment
Tanzania’s banking system operates within an interest-rate-based monetary policy framework introduced by the Bank of Tanzania in January 2024. Under the framework, the Central Bank Rate is used to guide short-term money-market conditions while supporting the central bank’s objectives of price stability and sustainable economic activity.
For commercial banks, the operating environment therefore requires close management of deposit pricing, loan yields, liquidity and duration risk. The broader banking system entered 2026 with substantial regulatory buffers. At the end of 2025, the sector recorded a liquid-assets-to-demand-liabilities ratio of 27.2%, compared with the 20% regulatory threshold. The liquidity coverage ratio stood at 219.2%, while the net stable funding ratio was 153.9%, both comfortably above their respective 100% requirements.
At institution level, funding remains predominantly deposit-led among major listed banks. In 2025, NMB reported customer deposits of TZS 12.37 trillion against net loans of TZS 10.43 trillion, while CRDB reported customer deposits of approximately TZS 14.93 trillion and loans and advances of TZS 13.72 trillion. These funding bases provide an important foundation for loan growth while reducing reliance on more volatile wholesale sources.
Net interest profitability remains significant, although it varies materially by institution.
Net Interest Margin (NIM) = Net Interest Income / Average Interest-Earning Assets
NMB reported a net interest margin of 8.3% for 2025, compared with 9.2% in 2024. Rather than assuming a single NIM range across the sector, Origin Core analysis treats the metric on a bank-specific basis, taking account of funding mix, asset composition, loan pricing and monetary-policy conditions.
2. Credit Quality, Asset Durability, and NPL Coverage
A central component of Origin Core Layer 2 is the evaluation of asset quality. Rapid credit expansion can support revenue growth, but the sustainability of that growth depends on underwriting standards, sector concentration and provisioning discipline.
On this measure, Tanzania’s recent banking-sector trend has been constructive. The Bank of Tanzania reported that gross NPLs declined to 2.8% of gross loans at the end of 2025, below the central bank’s maximum tolerable threshold of 5%. Core capital and total capital ratios remained materially above their regulatory minimums, indicating capacity within the system to absorb credit and market shocks.
Among major DSE-listed lenders:
NMB Bank reported an NPL ratio of 2.5% in 2025, down from 2.9% in 2024. Its NPL allowance coverage ratio stood at 96%, while its Tier 1 capital ratio reached 24.7%. (NMB Bank)
CRDB Bank reported an NPL ratio of 2.9%, a Tier 1 capital ratio of 16.1%, and a total capital ratio of 17.8% in 2025. These levels remained above the applicable regulatory minima disclosed by the bank. (CRDB Bank)
These figures point to comparatively contained credit impairment among the largest listed banking groups. However, NPL ratios should not be assessed in isolation. Analysts must also examine sector exposures, collateral quality, provisioning levels, loan restructurings and changes in Stage 2 credit exposures when evaluating the durability of bank asset quality.
3. Capital Efficiency and Return on Equity Trajectory
Profitability across Tanzania’s leading listed banks remained strong in FY2025, supported by loan growth, non-interest income and improving operating efficiency.
NMB reported TZS 760 billion in net profit for 2025, with return on average equity of 27%, return on average assets of 5%, and a cost-to-income ratio of 38%. Its shareholders’ funds increased to TZS 3.11 trillion, while total assets reached TZS 17.62 trillion.
CRDB reported TZS 728.6 billion in profit after tax, representing 32.1% annual growth. Return on average equity reached 29.5%, while return on average assets was 5.3%. Its cost-to-income ratio improved to 41.6%, compared with 45.7% in 2024.
Return on Equity (ROE) = Net Income / Average Shareholders’ Equity
At system level, the Bank of Tanzania reported a banking-sector ROE of 20.6% at the end of 2025, reinforcing the broader picture of healthy profitability, although returns remain differentiated across individual institutions.
The analytical priority is therefore not simply to identify banks with the highest reported ROE. Sustainable returns must be evaluated alongside capital consumption, credit-loss experience, funding costs and operating efficiency. A high return supported by adequate capital and controlled NPLs carries a different risk profile from a similar return produced through excessive leverage or concentrated credit exposure.
4. Valuation Discipline and Total Return Considerations
Strong banking fundamentals do not automatically imply that a listed equity is undervalued. Market valuation depends on the interaction between earnings, book value, expected growth, dividend policy, liquidity and the price investors are prepared to pay for those fundamentals.
DSE trading data illustrate that the leading banking counters remain actively traded. On 17 September 2026, CRDB recorded a weighted average price of TZS 2,840 per share, while NMB traded at a weighted average of TZS 2,090. These prices represent a market snapshot and should not, by themselves, be interpreted as evidence of either overvaluation or undervaluation.
Within the Origin Core framework, valuation analysis therefore requires the latest adjusted earnings-per-share and book-value data, together with any intervening corporate actions, before calculating comparable P/E, P/B or dividend-yield metrics.
NMB’s audited 2025 results, for example, recorded dividend payments equivalent to approximately one-third of earnings, while both NMB and CRDB maintained capital levels well above minimum regulatory requirements. This combination of profitability, capital strength and shareholder distributions provides a relevant base for further valuation work, but the investment conclusion must still depend on prevailing market prices and forward earnings expectations.
For long-term investors, the central research question is therefore not simply whether DSE banks trade at a numerical discount. It is whether current valuations adequately compensate for credit-cycle risk, liquidity conditions, monetary-policy changes and the sustainability of future earnings.
Research Implications
The latest available disclosures support a constructive assessment of Tanzania’s banking-sector fundamentals. System-wide NPLs are below the Bank of Tanzania’s tolerable ceiling, capital ratios remain comfortably above regulatory thresholds, and leading DSE-listed banks continue to generate strong returns on equity.
Under Origin Core Layer 2, however, balance-sheet quality should be assessed through a combination of credit quality, capital strength, funding resilience, operating efficiency and valuation discipline rather than any single headline ratio.
For SMA’s research process, NMB and CRDB therefore remain useful case studies in how Tanzania’s listed banking sector is evolving: stronger asset quality and profitability provide a solid analytical foundation, while changing market prices and monetary conditions require continuous reassessment rather than static valuation assumptions.