Tanzania’s interest rate trends in May 2025 reflect a balanced monetary environment, with stable lending rates (15.18%) supporting credit growth (12.8% in January 2025) and rising deposit rates (8.58%) strengthening bank funding. The narrowing interest rate spread (6.24%) indicates improved banking efficiency, but high lending rates and low savings rates (2.52%) highlight structural challenges in credit access and financial inclusion
1. Lending Interest Rates
Overview: Lending interest rates reflect the cost of borrowing for individuals, businesses, and prime clients in Tanzania’s banking sector. These rates are influenced by the Bank of Tanzania’s (BoT) monetary policy, particularly the Central Bank Rate (CBR) at 6%, private sector credit demand, and macroeconomic conditions like inflation (3.2% headline in May 2025).
May 2025 Performance:
Overall Weighted Average Lending Rate:
May 2024: 15.47%
April 2025: 15.16%
May 2025: 15.18%
Short-Term Lending Rate (≤1 year):
May 2024: 15.98%
April 2025: 16.15%
May 2025: 15.96%
Negotiated Lending Rate (Prime Clients):
May 2024: 12.69%
April 2025: 12.88%
May 2025: 12.99%
Context and Analysis:
Stability with Slight Fluctuations: The overall weighted average lending rate remained stable at 15.18% in May 2025, up slightly from 15.16% in April 2025 but down from 15.47% in May 2024. This stability reflects cautious credit conditions, driven by the BoT’s steady CBR at 6% and efforts to keep the 7-day interbank rate within the 4–8% policy band. The slight increase from April to May (2 basis points) may indicate marginal adjustments in response to rising food inflation (5.6%, Document, Page 4) or liquidity tightness in some banks (IBCM rate at 7.98%).
Short-Term Lending Rate Decline: The short-term lending rate (≤1 year) dropped to 15.96% in May 2025 from 16.15% in April 2025, suggesting banks are slightly easing terms for short-term borrowers, possibly to support working capital needs in sectors like agriculture, which saw 12.8% credit growth in January 2025. Compared to May 2024 (15.98%), the rate is nearly unchanged, indicating consistent pricing for short-term credit.
Negotiated Lending Rate Increase: The negotiated rate for prime clients rose to 12.99% in May 2025 from 12.88% in April 2025 and 12.69% in May 2024. This 11-basis-point increase from April to May signals rising costs for preferred borrowers, likely reflecting banks’ higher risk pricing amid inflationary pressures and tight liquidity (7-day interbank rate near 8%). Prime clients, typically large corporates or low-risk borrowers, benefit from lower rates due to their creditworthiness, but the upward trend suggests banks are adjusting margins to maintain profitability.
Economic Drivers: Lending rates remain high (15.18% overall) due to structural factors, including high operational costs in Tanzania’s banking sector, limited credit access (only 15% of adults had bank loans in 2023), and reliance on government securities (T-Bill yields at 8.89%, T-Bond yields at 12.94–15.29%). The BoT’s monetary policy, aimed at anchoring inflation within the 3–7% SADC target, supports rate stability but limits significant reductions. Rising food inflation and global uncertainties (e.g., U.S. tariff risks) may keep banks cautious, maintaining high lending rates to mitigate risks.
Implications: Stable but high lending rates (15.18% overall, 15.96% short-term) constrain credit access for small and medium enterprises (SMEs), which are critical for Tanzania’s economy (contributing 35% to GDP). The rise in negotiated rates (12.99%) could increase borrowing costs for corporates, potentially slowing investment in key sectors like manufacturing or agriculture. However, the slight decline in short-term rates (15.96%) may ease liquidity pressures for businesses with short-term financing needs, supporting economic activity (projected 6.0% GDP growth in 2025).
2. Deposit Interest Rates
Overview: Deposit interest rates reflect the returns offered by banks to attract savings and time deposits, which fund lending activities. These rates are influenced by competition among banks, liquidity conditions, and the BoT’s monetary policy. Higher deposit rates incentivize savings but increase banks’ funding costs.
May 2025 Performance:
Overall Time Deposit Rate:
May 2024: 7.65%
April 2025: 7.82%
May 2025: 8.58%
12-Month Time Deposit Rate:
May 2024: 8.97%
April 2025: 9.27%
May 2025: 9.72%
Negotiated Deposit Rate:
May 2024: 9.72%
April 2025: 10.52%
May 2025: 10.64%
Savings Deposit Rate:
May 2024: 2.87%
April 2025: 2.89%
May 2025: 2.52%
Context and Analysis:
Modest Increase in Time Deposits: The overall time deposit rate rose significantly to 8.58% in May 2025 from 7.82% in April 2025 and 7.65% in May 2024, a 76-basis-point increase month-on-month and 93-basis-point increase year-on-year. The 12-month time deposit rate also increased to 9.72% from 9.27% in April 2025 and 8.97% in May 2024. These rises indicate stronger competition among banks to attract longer-term deposits, likely to fund increased lending (private sector credit growth at 12.8% in January 2025) or offset liquidity tightness (IBCM volume up to TZS 3,267 billion).
Negotiated Deposit Rate Growth: The negotiated deposit rate climbed to 10.64% in May 2025 from 10.52% in April 2025 and 9.72% in May 2024, a 12-basis-point increase month-on-month and 92-basis-point increase year-on-year. This reflects banks offering higher rates to high-value depositors (e.g., corporates, institutions) to secure stable funding, especially as government borrowing competes for liquidity (T-Bond bids at TZS 1,032.5 billion).
Savings Deposit Rate Decline: The savings deposit rate fell to 2.52% in May 2025 from 2.89% in April 2025 and 2.87% in May 2024, a 37-basis-point drop month-on-month. This decline suggests banks are prioritizing longer-term time deposits over retail savings, which offer lower returns and are less stable for funding lending activities. The low savings rate aligns with Tanzania’s low savings culture (15% household savings rate in 2023), limiting retail deposit growth.
Economic Drivers: The rise in time deposit rates (8.58% overall, 9.72% for 12-month) reflects banks’ response to liquidity demands, as evidenced by the IBCM’s 7-day rate near the 8% upper bound. Competition for deposits is intensified by government securities’ attractive yields (T-Bills at 8.89%, T-Bonds at 15.29%), which draw funds away from bank deposits. The BoT’s liquidity management, using REPOs and Reverse REPOs, ensures overall system liquidity but does not fully address disparities among banks, pushing deposit rates upward. The decline in savings rates (2.52%) may discourage retail savings, potentially slowing financial inclusion efforts (40% of adults banked in 2023).
Implications: Higher time deposit rates (8.58%, 9.72%) strengthen banks’ funding base, supporting credit expansion in key sectors like agriculture and trade. However, increased funding costs could further elevate lending rates, squeezing bank margins (see interest rate spread below). The drop-in savings rates (2.52%) may deter retail depositors, limiting banks’ access to low-cost funds and reinforcing reliance on high-cost time deposits or interbank borrowing. Policymakers may need to promote savings incentives to boost financial inclusion and deposit growth.
3. Interest Rate Spread
Overview: The interest rate spread, the difference between lending and deposit rates, measures banking sector efficiency, risk pricing, and profitability. A narrower spread indicates improved efficiency or competitive pressures, while a wider spread reflects higher risk premiums or operational costs.
May 2025 Performance:
Short-Term Interest Spread:
May 2024: 7.01%
April 2025: 6.88%
May 2025: 6.24%
Context and Analysis:
Narrowing Spread: The short-term interest spread (difference between short-term lending rate and deposit rate) narrowed to 6.24% in May 2025 from 6.88% in April 2025 and 7.01% in May 2024, a 64-basis-point reduction month-on-month and 77-basis-point reduction year-on-year. Using provided data, the short-term lending rate (15.96%) and an inferred short-term deposit rate (e.g., 12-month time deposit rate at 9.72%) yield a spread of approximately 6.24%, confirming the provided figure.
Drivers of Narrowing: The narrowing spread reflects improved banking efficiency, likely due to technological advancements (e.g., mobile banking, 60% penetration in 2023) and increased competition (28 commercial banks in Tanzania). The rise in deposit rates (8.58% overall, 9.72% for 12-month) outpaced the slight increase in lending rates (15.18% overall), compressing bank margins. The BoT’s stable monetary policy (CBR at 6%) and liquidity management (IBCM volume at TZS 3,267 billion) support a more competitive environment, reducing spreads.
Economic Context: Tanzania’s banking sector faces high operational costs (e.g., branch networks, cybersecurity) and credit risks (non-performing loans at 4.8% in 2023), which historically widened spreads. The narrowing to 6.24% suggests banks are absorbing higher deposit costs to remain competitive, especially as government securities (T-Bonds at 15.29%) offer alternative investment options. The spread’s reduction aligns with earlier trends, as January 2025 data showed a spread of 6.5% (lending at 15.3%, deposits at 8.8%).
Implications: A narrower spread (6.24%) indicates improved efficiency and competitiveness, benefiting borrowers through relatively stable lending rates. However, tighter profit margins could pressure smaller banks, potentially leading to consolidation or reduced lending to riskier sectors like SMEs. The BoT may need to monitor spreads to ensure banks remain profitable while supporting credit growth (targeting 15% private sector credit growth in 2025).
Summary Table
Category
May 2025
Overall Lending Rate
15.18%
Short-Term Lending Rate (≤1 year)
15.96%
Negotiated Lending Rate (Prime)
12.99%
Overall Time Deposit Rate
8.58%
12-Month Time Deposit Rate
9.72%
Negotiated Deposit Rate
10.64%
Savings Deposit Rate
2.52%
Short-Term Interest Rate Spread
6.24%
Additional Insights and Implications
Policy Support: The BoT’s CBR at 6% and liquidity management (REPOs, IBCM rate at 7.98%) anchor interest rate stability, aligning with inflation targets (3–7% SADC benchmark). Government interventions, like the NFRA’s 47,238-tonne food release, help curb food inflation (5.6%), indirectly supporting rate stability by reducing inflationary pressures.
Risks:
High Lending Rates: At 15.18%, lending rates constrain SME financing, potentially slowing economic diversification (agriculture, manufacturing targeted for growth in 2025/26 budget).
Low Savings Rates: The 2.52% savings rate may discourage retail deposits, limiting banks’ low-cost funding and slowing financial inclusion (40% banked adults in 2023).
Tight Liquidity: The IBCM’s 7-day rate near 8% suggests liquidity disparities, which could push deposit rates higher, further narrowing spreads and squeezing bank profits.
Outlook: Stable lending rates and rising deposit rates support economic growth (projected 6.0% GDP in 2025), but the BoT must address high lending costs and low savings rates to boost credit access and financial inclusion. Continued export growth (16.8% in April 2025) and infrastructure investments will sustain liquidity, provided global uncertainties (e.g., geopolitical tensions) do not escalate.
