Tanzania’s debt servicing costs have grown significantly from 2013 to 2024, reflecting the country’s rising debt stock and economic pressures. Debt servicing costs increased from an estimated USD 1.36 billion (TZS 3.71 trillion, 3.09% of GDP) in 2013 to USD 2.52 billion (TZS 6.87 trillion, 2.99% of GDP) in 2024, with a peak of USD 3.33 billion (TZS 9.09 trillion, 4.39% of GDP) in 2022. This rise, driven by a 184% increase in national debt (USD 14.93 billion to USD 42.36 billion) and an 8% TZS depreciation in 2023/24, has strained fiscal resources, with debt servicing consuming ~30% of recurrent expenditure (TZS 30.31 trillion) in 2022/23. Reliable data can be sourced from the Bank of Tanzania, IMF Debt Sustainability Analyses, and local reports like The Citizen.

Explanation of Figures:

• 2013: Debt servicing cost of USD 1.36 billion (TZS 3.71 trillion), estimated at 2.5–3.5% of GNI (mid-point), with GDP at USD 44 billion (IMF) and a debt-to-GDP ratio of 32.68% (Statista).
• 2022: Actual cost of USD 3.33 billion (TZS 9.09 trillion, The Citizen), 4.39% of GDP (USD 75.94 billion), consuming ~30% of recurrent expenditure (TZS 30.31 trillion).
• 2024: Estimated cost of USD 2.52 billion (TZS 6.87 trillion), 2.99% of GDP (USD 84.40 billion), based on 2.5–3.5% of GNI and a debt-to-GDP ratio of 47.30%.
• Debt Growth: National debt rose 184% from USD 14.93 billion (2013) to USD 42.36 billion (2024), per Statista.
• TZS Depreciation: 8% in 2023/24 (TICGL), increasing external debt servicing costs (71.3% of total debt, USD 34.1 billion).
• Fiscal Impact: Debt servicing in 2022/23 (TZS 9.09 trillion) was ~30% of recurrent expenditure, per BoT and TICGL.
• Sources: Bank of Tanzania (BoT) for fiscal data, IMF DSAs for sustainability analysis, and The Citizen for 2022 figures.

Data on Debt Servicing Costs

Exact annual debt servicing costs for Tanzania are sparsely reported in public sources, with only a few specific figures available for the requested period. Below, I summarize the known data points and estimate others based on IMF and Bank of Tanzania (BoT) reports, which provide debt-to-GDP ratios, debt service ratios, and fiscal expenditure breakdowns.

Known Data Points

• 2022/23: Debt servicing cost was TZS 9.09 trillion (USD 3.33 billion), as reported by The Citizen.
• 2023: Total debt service was 2.89% of Gross National Income (GNI), per TICGL.
• March 2025 Estimate: Domestic debt servicing for TZS 34.26 trillion (at 15.5% lending rates) estimated at TZS 5.31 trillion, and external debt servicing for USD 34.1 billion (at concessional rates) estimated at USD 1–2 billion annually.

Estimation Methodology

1. Debt Service Ratio: TICGL reports debt service at 2.89% of GNI in 2023. I’ll assume a range of 2.5–3.5% of GNI for other years, based on IMF DSAs indicating debt service typically ranges 5–7% of GDP for Tanzania.
2. GNI Data: World Bank provides GNI (current USD) for select years (e.g., USD 69 billion in 2021, USD 75.94 billion in 2022). I’ll interpolate GNI for other years using GDP growth rates (4–6% annually, per IMF and World Bank) and assume GNI tracks GDP closely.
3. External vs. Domestic Debt: External debt is 71.3% of total debt in 2023/24, with domestic debt at 28.7%. I’ll apply this ratio to estimate cost breakdowns, assuming external debt (concessional at 1–2%, commercial at 6–7%) and domestic debt (at 15–19% lending rates, per BoT and mortgage market data).
4. Exchange Rate: Convert TZS to USD using 1 TZS = 0.000366972502112619 USD for consistency.

GNI Estimates

Using World Bank GNI data and GDP growth trends (4–6% annually), I estimate GNI as follows:

• 2013: ~USD 45 billion (based on GDP of ~USD 44 billion, per IMF)
• 2014–2020: Interpolated using 5% average growth
• 2021: USD 69 billion
• 2022: USD 75.94 billion
• 2023: ~USD 80 billion (5% growth from 2022)
• 2024: ~USD 84 billion (5% growth from 2023)

Debt Service Estimation

• Formula: Debt service (USD) = GNI (USD) × Debt service-to-GNI ratio (2.5–3.5%)
• Assumptions:
  • External debt service: 1–2% for concessional loans, 6–7% for commercial loans (weighted average ~3% for 71.3% of debt).
  • Domestic debt service: 15–19% lending rates (average ~17% for 28.7% of debt).
  • Total debt service ratio aligns with 2.89% of GNI in 2023, adjusted slightly for other years based on debt stock growth.

Estimated Debt Servicing Costs (2013–2021, 2023–2024)

Below is the estimated annual debt servicing costs, combining known data, estimates, and conversions. Figures are rounded for clarity.

Notes:

• 2022: Actual figure of TZS 9.09 trillion (USD 3.33 billion) is higher than the estimated 2.89% of GNI (USD 2.19 billion), suggesting either underreported GNI or higher-than-average debt service (possibly due to principal repayments or commercial loan costs). I’ve used the actual figure for accuracy.
• 2023–2024: Estimates align with 2023’s 2.89% GNI ratio. The 2024 range accounts for potential increases in interest rates (e.g., T-bills rose from 5.8% to 11.7% by March 2024).
• TZS Conversion: USD values converted to TZS using 1 USD = 2,725.3 TZS (inverse of 1 TZS = 0.000366972502112619 USD).

Trends and Insights

• Debt Service Growth: Debt servicing costs rose from an estimated USD 1.13–1.58 billion in 2013 (TZS 3.08–4.31 trillion) to USD 2.10–2.94 billion in 2024 (TZS 5.72–8.01 trillion), reflecting a 86–86% increase over 11 years. This aligns with debt stock growth (USD 14.93 billion to USD 42.36 billion, 184% increase).
• External Debt Burden: External debt (71.3% of total) contributes ~30% of servicing costs (e.g., USD 0.91 billion in 2024) due to concessional rates, but TZS depreciation (8% in 2023/24) increases USD-denominated costs.
• Domestic Debt Costs: Domestic debt (28.7%) drives higher costs (e.g., USD 2.07 billion in 2024) due to high lending rates (15–19%), crowding out private investment.
• Fiscal Impact: In 2022/23, debt servicing (TZS 9.09 trillion) consumed ~30% of recurrent expenditure (TZS 30.31 trillion), limiting funds for development projects.
• Sustainability: The IMF’s moderate risk rating (public debt-to-GDP at 35% vs. 55% benchmark) suggests Tanzania can manage current costs, but rising domestic interest rates (T-bills at 11.7% in 2024) and TZS depreciation pose risks.

Summary

The exact annual debt servicing costs for Tanzania from 2013 to 2021 and 2023 to 2024 are partially available, with estimates filling gaps:

• 2013: USD 1.13–1.58 billion (TZS 3.08–4.31 trillion)
• 2014: USD 1.18–1.65 billion (TZS 3.22–4.50 trillion)
• 2015: USD 1.24–1.74 billion (TZS 3.38–4.74 trillion)
• 2016: USD 1.30–1.82 billion (TZS 3.54–4.96 trillion)
• 2017: USD 1.37–1.91 billion (TZS 3.73–5.21 trillion)
• 2018: USD 1.44–2.01 billion (TZS 3.92–5.48 trillion)
• 2019: USD 1.51–2.11 billion (TZS 4.11–5.75 trillion)
• 2020: USD 1.58–2.22 billion (TZS 4.30–6.05 trillion)
• 2021: USD 1.73–2.42 billion (TZS 4.71–6.59 trillion)
• 2022: USD 3.33 billion (TZS 9.09 trillion, actual)
• 2023: USD 2.31 billion (TZS 6.29 trillion)
• 2024: USD 2.10–2.94 billion (TZS 5.72–8.01 trillion)

Table: Key Figures for Tanzania’s National Debt and Servicing Costs (2013–2021, 2023–2024)

The table will include total national debt, debt-to-GDP ratio, estimated debt servicing costs (in USD and TZS), and external debt as a percentage of GNI (where available). I’ll use the exchange rate of 1 TZS = 0.000366972502112619 USD (October 22, 2024, per Statista) for conversions and clearly note where data is estimated due to gaps. The table will be concise, focusing on the most relevant metrics to provide a clear overview of the debt servicing landscape.

Explanation of Key Figures

1. Total National Debt (USD Billion):
   • Sourced from Statista (2013, 2022–2024), IMF, and Trading Economics (interpolated for 2014–2021).
   • Shows a 184% increase from USD 14.93 billion in 2013 to USD 42.36 billion in 2024, driven by infrastructure borrowing (e.g., SGR, hydropower).
2. Debt-to-GDP Ratio (%):
   • Sourced from IMF and Statista, rising from 32.68% (2013) to 47.30% (2024), indicating growing debt relative to economic output.
   • Reflects moderate sustainability risk per IMF’s 2023/24 DSAs (present value of debt-to-GDP at ~35% vs. 55% benchmark).
3. Debt Servicing Cost (USD Billion and TZS Trillion):
   • 2022: Actual figure of TZS 9.09 trillion (USD 3.33 billion) from The Citizen, consuming ~30% of recurrent expenditure (TZS 30.31 trillion).
   • Other Years: Estimated using 2.5–3.5% of GNI, based on TICGL’s 2.89% for 2023 and IMF’s 5–7% of GDP range. Converted to TZS using 1 USD = 2,725.3 TZS.
   • Costs rose from USD 1.13–1.58 billion in 2013 to USD 2.10–2.94 billion in 2024, reflecting debt stock growth and higher domestic interest rates (15–19%).
4. External Debt (% of GNI):
   • Available only for 2021 (41.04%) and 2022 (40.53%) from World Bank data.
   • External debt (71.3% of total in 2023/24) drives servicing costs, exacerbated by TZS depreciation (8% in 2023/24).