01 — OverviewExecutive Summary
In July 2026, the Bank of Tanzania raised the Central Bank Rate (CBR) from 5.75% to 6.25% for the quarter ending September 2026, aiming to contain inflationary pressure building from fuel, fertilizer and transport costs. That single policy move rippled through two markets TICGL tracks closely for clients structuring shilling-denominated financing: the government securities market, where investors re-priced longer-dated bonds sharply higher, and the interbank cash market, where banks redistributed shilling liquidity at a pace more than double the previous month.
This briefing unpacks both markets using the Bank of Tanzania's own auction, yield and turnover data for July 2026, set against a full thirteen-month trend from July 2025.
- Treasury bill auctions were heavily oversubscribed. A combined tender of TZS 580 billion drew bids of TZS 1,287.6 billion — more than double — while the weighted average yield eased to 4.74%.
- The bond yield curve steepened sharply. The 20-year Treasury bond yield jumped 90 basis points to 11.33%, widening the 2-year to 20-year spread to 2.93 percentage points from 2.07.
- Short-term bill yields sit at multi-year lows even as the CBR rises, while the 364-day bill has reversed course and is climbing — a sign the market is pricing in tighter policy ahead.
- Interbank cash market turnover more than doubled to TZS 5,627 billion from TZS 2,508.7 billion in June, yet the overall interbank rate stayed close to the policy corridor.
- Government domestic debt rose modestly to TZS 39,472.2 billion, driven by bond issuance for development financing, with commercial banks and pension funds remaining the dominant creditors.
Track these markets in real time on TICGL's Business Intelligence Dashboard
Yields, auction results and liquidity conditions move month to month. TICGL's Tanzania Business Intelligence Dashboard lets treasurers, fund managers and researchers follow these indicators continuously, alongside the wider macroeconomic picture covered in TICGL's research.
Open the Tanzania Business Intelligence Dashboard →02 — At a GlanceKey Numbers From July 2026
Policy Corridor vs. Overall Interbank Cash Market Rate
Source: Bank of Tanzania, Table A4 — Interest Rates Structure, Monthly Economic Review, August 2026.
03 — MethodologyReading the Bank of Tanzania's Money and Debt Market Data
The Bank of Tanzania publishes monthly auction results for Treasury bills and bonds, daily-average interbank cash market rates by tenor, and end-of-month stock and turnover figures for the interbank foreign exchange market and government domestic debt. This briefing compiles those series — drawn from Table A4 (Interest Rates Structure), Table 2.4.1 (Government Securities Yields), Chart 2.6.2 (Issued Government Securities for Financing Purposes), and Tables 2.6.5–2.6.6 (Government Domestic Debt) — into a single thirteen-month trend view, so that a single month's auction result can be read against the pattern that preceded it.
Monthly weighted-average yields for each Treasury bill tenor (35, 91, 182 and 364 days) and each Treasury bond tenor (2, 5, 10, 15, 20 and 25 years) were plotted from July 2025 through July 2026. Interbank cash market rates, the repo/reverse-repo rate and the Lombard rate were plotted on the same monthly basis to show the policy corridor in context. Auction tender, bid and acceptance amounts, and domestic debt stock by instrument and creditor category, are presented for the specific months the Bank of Tanzania reported them.
A single CBR decision does not move every market the same way or at the same speed. Seeing the bill curve, the bond curve, and interbank turnover side by side in the same month shows where the July 2026 rate hike has already been priced in, and where the effect on credit growth — as the Bank itself notes — is still expected "with a lag."
1. Policy Rate & the Interbank Corridor
Well contained despite the hikeThe CBR sits at the centre of a corridor: the Bank uses the Lombard rate as an upper ceiling and the repo/reverse-repo rate to anchor short-term liquidity operations, keeping the 7-day interbank cash market rate within 150 basis points either side of the CBR — a band of 4.75%–7.75% from July 2026.
- Liquidity was managed mainly through reverse repurchase auctions during July, keeping the 7-day rate close to the CBR despite the sharp rise in turnover — a sign the Bank absorbed the extra liquidity rather than letting it push rates outside the policy corridor.
2. Treasury Bills: Oversubscribed, and Short Yields at Multi-Year Lows
Curve diverging by tenorJuly 2026 auctions were heavily oversubscribed. The Bank offered a combined tender of TZS 580 billion across two Treasury bills auctions; bids reached TZS 1,287.6 billion — more than double the tender — of which TZS 513.4 billion was accepted for government financing and liquidity management.
Treasury Bill Yields by Tenor
| Tenor | Jan-26 | Mar-26 | May-26 | Jun-26 | Jul-26 | 12-mo change |
|---|---|---|---|---|---|---|
| 35-day | 5.36 | 4.20 | 3.23 | 2.82 | 2.34 | -4.16 pp |
| 91-day | 5.73 | 4.23 | 3.78 | 3.56 | 3.40 | -4.06 pp |
| 182-day | 5.85 | 5.69 | 5.23 | 4.98 | 4.74 | -3.50 pp |
| 364-day | 6.21 | 5.80 | 5.63 | 6.65 | 7.07 | -1.06 pp |
| Overall weighted average | 5.89 | 5.21 | 4.74 | 4.83 | 4.74 | -3.39 pp |
Source: Bank of Tanzania, Table A4 — Interest Rates Structure.
An inverted-then-steepening bill curve — the long tenor rising while short tenors keep falling — is often an early signal that the market is pricing in tighter policy ahead, consistent with the CBR hike that took effect the same month.
3. Treasury Bonds: A Curve That Steepened Sharply
Long-end financing costs firmingThe Bank also conducted three Treasury bond auctions in July 2026 — for 2-year, 10-year and 20-year tenors — with a combined tender of TZS 684.9 billion. Bids reached TZS 1,466.2 billion, of which TZS 641.9 billion was accepted. Long-dated yields moved up sharply, steepening the curve.
| Instrument | Previous auction (%) | Jul-2026 (%) | Change (bps) |
|---|---|---|---|
| Treasury bond, 2-year | 8.36 | 8.40 | +4 |
| Treasury bond, 10-year | 10.39 | 10.87 | +48 |
| Treasury bond, 20-year | 10.43 | 11.33 | +90 |
| Spread, 2-year to 20-year | 2.07 pp | 2.93 pp | +86 |
Source: Bank of Tanzania, Table 2.4.1 — Government Securities Yields.
Treasury Bond Yields by Tenor, 13-Month Trend
Curve Steepening: Previous Auction vs. July 2026
Monthly Issuance for Financing Purposes
Government reliance on bonds over bills for domestic financing has been the dominant pattern over the past year, though July 2026 saw a marked shift toward bonds again after several lighter months.
Treasury Bills vs. Treasury Bonds Issued
Source: Bank of Tanzania, Chart 2.6.2 — Issued Government Securities for Financing Purposes. July 2026: T-bills TZS 178.9bn, T-bonds TZS 502.5bn. Domestic debt service, Jul-26: TZS 566.4bn.
4. Interbank Cash Market: Liquidity More Than Doubled
Ample, not tightThe interbank cash market is where banks redistribute shilling liquidity among themselves — overnight through to 181-day tenors — and it remains the Bank's principal channel for transmitting monetary policy. Total turnover jumped to TZS 5,627 billion in July 2026, from TZS 2,508.7 billion in June, with 7-day transactions making up nearly half of all activity.
Turnover, June vs. July 2026
Turnover by Tenor, July 2026
Interbank Rates by Tenor
| Tenor | Jan-26 | Mar-26 | May-26 | Jun-26 | Jul-26 |
|---|---|---|---|---|---|
| Overnight | 6.13 | 6.17 | 5.94 | 5.53 | 5.92 |
| 2 to 7 days | 6.34 | 6.25 | 5.96 | 5.90 | 6.23 |
| 8 to 14 days | 6.74 | 6.53 | 6.48 | 6.46 | 6.90 |
| 15 to 30 days | 7.06 | 6.85 | 6.58 | 6.64 | 7.31 |
| 91 to 180 days | 6.75 | 8.07 | 7.27 | 7.07 | 6.92 |
| Overall interbank rate | 6.40 | 6.32 | 6.14 | 6.00 | 6.57 |
Source: Bank of Tanzania, Table A4 — Interest Rates Structure.
Liquidity was managed mainly through reverse repurchase auctions during July, keeping the 7-day rate close to the CBR despite the sharp rise in turnover — a sign the Bank absorbed the extra liquidity rather than letting it push rates outside the policy corridor.
The foreign exchange leg of the interbank market was calmer by comparison: turnover in the Interbank Foreign Exchange Market (IFEM) rose to USD 227.1 million from USD 193.3 million in June, with the Bank conducting net sales of USD 110.3 million to manage volatility. The shilling averaged TZS 2,653.52 per USD in July, a mild 0.8% monthly depreciation but a 0.5% annual appreciation.
5. Government Domestic Debt: Who Holds It, and How
Securities-heavy, bank & pension-fund dominatedGovernment domestic debt stock rose to TZS 39,472.2 billion at the end of July 2026, from TZS 39,325.8 billion the previous month, driven largely by bond issuance for development financing.
Domestic Debt by Instrument
Domestic Debt by Creditor, Jul-2026
| Creditor category | Jul-25 (TZS bn) | Jun-26 (TZS bn) | Jul-26 (TZS bn) | Jul-26 share |
|---|---|---|---|---|
| Commercial banks | 10,176.3 | 11,320.8 | 11,450.6 | 29.0% |
| Pension funds | 9,328.8 | 10,399.0 | 10,491.4 | 26.6% |
| Bank of Tanzania | 6,799.3 | 7,197.1 | 6,819.7 | 17.3% |
| Others (private companies, individuals, non-residents) | 6,461.3 | 7,547.4 | 7,792.9 | 19.7% |
| Insurance | 1,808.4 | 2,022.8 | 2,063.0 | 5.2% |
| BOT's special funds | 777.3 | 838.6 | 854.6 | 2.2% |
| Total (excl. liquidity papers) | 35,351.4 | 39,325.8 | 39,472.2 | 100% |
Source: Bank of Tanzania, Table 2.6.6 — Government Domestic Debt by Creditor Category.
06 — SynthesisCross-Cutting Synthesis: The Month in One Picture
The 20-year Treasury bond yield jumped 90 basis points in a single auction — the sharpest move on the curve. Issuers and long-term borrowers should expect financing costs on shilling debt to firm up before they ease.
The 35-day and 91-day bill yields are at their lowest in over a year, reflecting strong demand for near-term, liquid instruments even as the policy rate rises.
A doubling of interbank turnover alongside a well-contained interbank rate suggests banks have plenty of shillings to lend each other; the CBR hike's effect on credit growth is expected with a lag rather than immediately.
Despite heavier bond issuance for financing purposes, the domestic debt stock grew only marginally month-on-month, with commercial banks and pension funds continuing to anchor demand.
07 — ApplicationWho This Matters To
Corporate Treasurers
- Weigh short-tenor Treasury bills, now at multi-year low yields, against holding cash or shilling deposits.
- Revisit long-term shilling borrowing plans in light of the steeper bond curve before locking in new facilities.
Pension Funds & Insurers
- Reassess fixed-income portfolio duration given the widened 2-year to 20-year spread and higher long-end yields.
- Note that pension funds and insurers together already hold roughly a third of government domestic debt.
Banks & Non-Bank Lenders
- Factor the CBR increase into new shilling credit pricing, while recognising the effect is expected to show up with a lag.
- Ample interbank liquidity suggests near-term funding costs should stay manageable despite the policy tightening.
PPP Structurers & Development Partners
- Update cost-of-capital assumptions in feasibility studies to reflect the higher long-end government bond yields.
- Monitor the government's financing mix (bills vs. bonds) as an indicator of near-term fiscal financing conditions.
"Tanzania's July 2026 rate hike moved through its money markets in stages, not all at once: the bill curve had already softened at the short end, the bond curve reacted immediately at the long end, and the interbank market simply absorbed the extra liquidity without a fight. Reading only one of these three tells an incomplete story."
— TICGL Directorate of Economic Research and Policy
08 — Sources & Data NotesReferences, Data Sources and Limitations
TICGL Directorate of Economic Research and Policy analysis of the Bank of Tanzania's Monthly Economic Review, August 2026 edition (data through July 2026) — specifically Table A4 (Interest Rates Structure), Table 2.4.1 (Government Securities Yields), Chart 2.6.2 (Issued Government Securities for Financing Purposes), and Tables 2.6.5–2.6.6 (Government Domestic Debt).
- Primary data: Bank of Tanzania, Monthly Economic Review, August 2026, covering data through July 2026.
- Method: Monthly Treasury bill and bond yields by tenor, interbank cash market rates, and domestic debt stock figures compiled into thirteen-month trend series (July 2025–July 2026) and month-specific auction/turnover comparisons.
- Known limitations: Figures for July 2026 are provisional (denoted "p" by the Bank of Tanzania) and subject to revision in subsequent monthly reviews. Interbank turnover by individual tenor beyond the 7-day share is not separately reported in the source and is therefore not broken out here.
09 — Quick AnswersFrequently Asked Questions
Why did Tanzania's Central Bank Rate rise in July 2026?
The Bank of Tanzania raised the Central Bank Rate (CBR) from 5.75% to 6.25% for the quarter ending September 2026 to contain emerging inflationary pressure, including potential second-round effects from elevated energy, fertilizer and transport costs.
How oversubscribed were Tanzania's Treasury bill auctions in July 2026?
The Bank of Tanzania offered a combined tender of TZS 580 billion across two Treasury bills auctions in July 2026. Bids reached TZS 1,287.6 billion — more than double the amount offered — of which TZS 513.4 billion was accepted, at a weighted average yield of 4.74%.
How much did Tanzania's Treasury bond yields rise in July 2026?
The 20-year Treasury bond yield rose 90 basis points to 11.33% from 10.43%, the 10-year rose 48 basis points to 10.87%, and the 2-year rose 4 basis points to 8.40%, steepening the yield curve and widening the 2-year to 20-year spread to 2.93 percentage points.
Why did Tanzania's interbank cash market turnover more than double in July 2026?
Total interbank cash market turnover rose to TZS 5,627 billion in July 2026 from TZS 2,508.7 billion in June, as banks redistributed ample shilling liquidity among themselves. The Bank of Tanzania managed this mainly through reverse repurchase auctions, keeping the overall interbank rate close to the policy corridor despite the surge in volume.
Who holds most of Tanzania's government domestic debt?
As of July 2026, commercial banks held the largest share of government domestic debt at 29.0%, followed by pension funds at 26.6%, the Bank of Tanzania at 17.3%, and other holders including private companies, individuals and non-residents at 19.7%.
Muhtasari kwa Kiswahili
Soko la Hatifungani za Serikali na Soko la Fedha Baina ya Benki, Julai 2026 — Mnamo Julai 2026, Benki Kuu ya Tanzania (BOT) iliongeza Riba ya Benki Kuu (CBR) kutoka asilimia 5.75 hadi 6.25 kwa robo mwaka inayoishia Septemba 2026, ikilenga kudhibiti mfumuko wa bei unaotokana na gharama za nishati, mbolea na usafirishaji.
Matokeo makuu: Katika soko la hatifungani za Serikali, minada ya dhamana za muda mfupi (Treasury bills) ilipokewa vizuri sana — zabuni zilifikia TZS bilioni 1,287.6 dhidi ya lengo la TZS bilioni 580, na wastani wa riba ulishuka hadi asilimia 4.74. Hata hivyo, dhamana za muda mrefu (Treasury bonds) ziliongezeka kwa kasi: riba ya miaka 20 ilipanda hadi asilimia 11.33 kutoka asilimia 10.43. Katika soko la fedha baina ya benki, kiwango cha mauzo kiliongezeka zaidi ya mara mbili hadi TZS bilioni 5,627 kutoka TZS bilioni 2,508.7 mwezi Juni, huku riba ya jumla ikiwa asilimia 6.57 — ikionesha ukwasi wa kutosha katika mfumo wa benki.
Deni la ndani la Serikali liliongezeka kidogo hadi TZS bilioni 39,472.2 mwishoni mwa Julai 2026, likichangiwa na utoaji wa hatifungani kwa ajili ya miradi ya maendeleo. Benki za biashara na mifuko ya pensheni bado ndio wamiliki wakubwa wa deni hilo la ndani.
- CBR: asilimia 6.25 (kutoka 5.75) kwa robo inayoishia Septemba 2026
- Riba ya hatifungani ya miaka 20: asilimia 11.33 (kutoka 10.43)
- Mauzo ya soko la fedha baina ya benki: TZS bilioni 5,627 (ongezeko la zaidi ya mara mbili)
- Deni la ndani la Serikali: TZS bilioni 39,472.2 mwishoni mwa Julai 2026
Chanzo: Benki Kuu ya Tanzania, Monthly Economic Review, Agosti 2026. Uchambuzi: TICGL Directorate of Economic Research and Policy.