At the Treasury bill auction dated 21 October 2026, the Bank of Tanzania cleared the 91-day bill at 3.64% (up 14 basis points), the 182-day bill at 5.57% (down 6 basis points) and the 364-day bill at 6.13% (down 15 basis points). The rate shown is the weighted average yield of successful bids.
The auction was fully subscribed: bids totalled TZS 417.6bn against TZS 338.8bn on offer, 123% of the amount sought, and TZS 320.9bn was accepted.
Over the past year the 364-day rate has ranged from 5.20% to 7.12%.
A year earlier the 364-day bill cleared at 5.61%, so the government is paying 53 basis points more than twelve months ago.
What this means for TZS 1,000,000
Worked from the published rate · information, not advice
TZS 61,342 in 12 months on the 364-day bill
Put TZS 1,000,000 into the 364-day bill at this auction and you get back TZS 1,061,342 after 12 months: TZS 61,342 in interest before any withholding tax, about TZS 5,112 a month.
That is TZS 1,497 less than the same money would have earned at the previous auction.
For shorter money: TZS 27,856 on the 182-day bill (6 months), TZS 9,089 on the 91-day bill (3 months).
The government pays the full amount at maturity; the risk is Tanzania’s government not paying, and the money is locked until then.
Kwa Kiswahili
Ukiweka TZS 1,000,000 kwenye hati ya siku 364 kwa riba ya mnada huu, utarudishiwa TZS 1,061,342 baada ya miezi 12: riba ya TZS 61,342 kabla ya kodi yoyote ya zuio, yaani takriban TZS 5,112 kwa mwezi.
Hiyo ni TZS 1,497 pungufu ya kiasi ambacho pesa hiyo hiyo ingepata kwenye mnada uliopita.
Serikali hulipa yote mwishoni mwa muda; hatari ni serikali kushindwa kulipa, na pesa haipatikani hadi muda uishe.
Results
By tenor
| Tenor | Rate | Previous | Offered | Bids | Accepted |
|---|---|---|---|---|---|
| 91-day | 3.636% | 3.491% | TZS 69.90bn | TZS 52.00bn | TZS 52.00bn |
| 182-day | 5.571% | 5.630% | TZS 99.90bn | TZS 125.50bn | TZS 99.90bn |
| 364-day | 6.134% | 6.284% | TZS 169.00bn | TZS 240.08bn | TZS 169.00bn |
Source: Bank of Tanzania result · weighted average yield of successful bids
Cite or reuse this data
Free to quote, chart and republish with the credit “Source: Afronomics, compiled from the Bank of Tanzania” and a link to this page.
Afronomics (2026). Tanzania Treasury bill auction, 21 October 2026, compiled from the Bank of Tanzania. Retrieved 4 November 2026, from https://www.afronomicsfeed.com/markets/tbills/tanzania/2026-10-21
Free · a two-minute read before 07:30, every weekday
The Afronomics Morning
Today’s rates, currencies and auction results before the day starts: what the T-bill paid this week, what moved overnight, what is due today. Every figure from the source.
Free when you sign up: our guide to where your shilling earns most — T-bills, money market funds, SACCOs and banks, after tax.