External Debt Dominates at 70.6% (Sept 2025)

As of September 2025, Tanzania’s total public debt stood at TZS 127,474.5 billion, with external debt accounting for 70.6% (TZS 90,015.4 billion) and domestic debt contributing 29.4% (TZS 37,459.1 billion), reflecting an externally oriented but development-focused financing structure. The external portfolio—converted from USD 35.4 billion using the average rate of TZS 2,471.69/USD—is primarily held by the central government (77.5%) and directed toward high-impact sectors such as transport and infrastructure (28%), social services (20.4%), and energy/minerals (14.3%). Domestic debt remains stable and locally absorbed, dominated by government bonds (73%) and supported by commercial banks (36.4%) and pension funds (23.9%), indicating a deep and liquid local market. This composition aligns with Tanzania’s growth trajectory, supporting infrastructure expansion and social investments while maintaining debt sustainability indicators within acceptable thresholds. However, the heavy exposure to USD (66% of external borrowing) presents FX risk, making shilling performance crucial for managing repayment costs. Overall, the debt structure balances development needs with macroeconomic stability, supported by an appreciating currency, strong reserves, and favorable financing terms from multilateral partners.

1. Tanzania National Debt Overview (September 2025)

Tanzania’s total public debt consists of external debt and domestic debt.

Summary Table — National Debt (TZS)

2. Debt Conversion Explanation

The external debt is originally reported in USD.
The report’s exchange rate is:

• TZS 2,471.69 per USD (September 2025 average)
• USD 35,438.2 million × 2,471.69 = TZS 90,015.4 billion

Domestic debt is already in TZS in the document:

• TZS 37,459.1 billion

3. Detailed Breakdown — External Debt (Converted to TZS)

3.1 External Debt Stock by Borrower

(All USD values from document summary)

3.2 External Debt by User of Funds (Converted to TZS)

✔ Converted using TZS 2,471.69/USD.

4. Detailed Breakdown — Domestic Debt (TZS)

4.1 Domestic Debt Structure by Creditor Category

4.2 Domestic Debt by Instrument Type

5. Combined National Debt Summary (in TZS)

6. Final Summary Table — Tanzania National Debt (TZS)

Implications of Tanzania's National Debt Structure in September 2025

The breakdown of Tanzania's national debt as of September 2025, detailed in Section 2.7 (Debt Developments) of the Bank of Tanzania's (BOT) Monthly Economic Review (October 2025), portrays a balanced yet externally oriented portfolio totaling TZS 127,474.5 billion (equivalent to ~USD 51.6 billion at TZS 2,471.69/USD). External debt dominates at 70.6% (TZS 90,015.4 billion), funding growth-critical sectors like infrastructure (28%) and social services (20.4%), while domestic debt (29.4%, TZS 37,459.1 billion) relies on stable local institutions (e.g., banks 36.4%, pensions 23.9%). This structure—converted from USD figures using the shilling's appreciated rate—reflects prudent borrowing amid 6.3% Q2 GDP growth, low 3.4% inflation, and a TZS 618.5 billion fiscal deficit (partly debt-financed). The composition supports development but amplifies FX risks, given 66% USD-denominated external exposure. Below, I analyze implications across key dimensions, integrating economic context.

1. Debt Composition: External Dominance for Growth Financing

• External Debt (70.6%, TZS 90,015.4B): Predominantly central government (77.5%, TZS 67,854.5B), with private sector (15.1%) and guarantees (7.4%) adding diversification. Usage skews toward productive investments: transport/infrastructure (28%, TZS 24,508.1B) aligns with construction's 1.1% GDP contribution, energy/minerals (14.3%, TZS 12,506.2B) supports mining growth (1.5% GDP), and agriculture/water (14%, TZS 12,280.9B) bolsters food security (NFRA stocks at 570,519 tonnes). Concessional terms (57% multilateral) keep costs low (~1.2% interest).
• Domestic Debt (29.4%, TZS 37,459.1B): Bonds dominate (73%, TZS 27,349.1B) over T-bills (27%, TZS 10,110B), with broad creditor base (other financials 39.7%) indicating deep local markets (oversubscription in securities). This reduces FX volatility spillovers.
• Broader Implications:
  • Positive: Funds 71.9% expenditure execution (TZS 3,346.6B), enabling 6% full-year GDP projection via reliable power and exports. Shilling appreciation (+9.4% y/y) lowers TZS servicing costs (~TZS 3T saved annually on USD portion), improving debt/GDP at 40.1% (below EAC 50% threshold).
  • Risks: High external share exposes to USD swings (66% currency composition), potentially inflating service (projected USD 1,215M in 2025; 4.2% of exports). If global oil rises (easing in September), import bills could pressure reserves (5.8 months cover).

2. Sustainability and Servicing Dynamics

• Borrower and Creditor Profile: Central government's 77.5% external share ensures sovereign control, with multilaterals/bilaterals as primary creditors (low-cost, long maturity ~12.8 years). Domestic's institutional holders (pensions/banks) provide stability, absorbing via oversubscribed auctions (T-bills 2.4x).
• Fund Utilization: 82.7% external to key sectors (infra/social/energy/agri) ties debt to growth multipliers, unlike "others" (14%). This supports private credit (16.1% y/y) without crowding out.
• Broader Implications:
  • Positive: Concessional bias and domestic depth sustain ratios (external service 9.8% exports, down from 11.2% 2024). Aligns with monetary policy (CBR 5.75%), keeping real yields positive (vs. 3.4% inflation) and IBCM stable (6.45%).
  • Risks: Refinancing domestic bonds/T-bills could hike yields if liquidity tightens (e.g., from revenue shortfalls like mining taxes; 87.2% collection). Cumulative growth (+1.4% MoM total debt) demands revenue diversification beyond gold/tourism.

3. Fiscal and Macroeconomic Linkages

• Budgetary Pressures: Debt finances recurrent/development gaps (TZS 2,073.7B/1,272.9B), with servicing rising as % of spend amid delays (71.9% execution). Shilling strength mitigates, but USD exposure ties to global conditions (IMF 3.2% growth).
• Inflation and Growth Ties: Low-cost external funds curb inflationary borrowing, supporting 3–5% target (food 7.0% eased by stocks;). In Zanzibar, analogous structure aids tourism/external performance.
• Broader Implications:
  • Positive: Enhances resilience (reserves USD 6.66B), fostering M3 growth (20.8% y/y) and export surplus (USD 1.0B Q2). Positive for EAC/SADC convergence.
  • Risks: FX depreciation (reversed from 2024's -10.1%) could balloon TZS costs by 10–15%, straining deficit. Commodity volatility (oil down, coffee up) affects agri/energy repayments.

4. Policy Context from the Review

• Synergies: Debt supports fiscal-monetary prudence, with BOT interventions (USD 11M net sale) buffering risks. Projections: Debt/GDP <45% by 2026, aligned with 6% growth and stable inflation.
• Outlook: Strengthen domestic market (e.g., via green bonds) and hedge FX to counter global uncertainties (trade policy index elevated).

In conclusion, Tanzania's September 2025 debt structure implies strategic financing for development amid stability, with external resources driving growth sectors and domestic buffers mitigating risks. The 70.6% external tilt underscores FX vigilance, but concessional terms and shilling strength ensure sustainability—reinforcing the Review's narrative of prudent policies for 2026 resilience.