CBK Treasury Bill Yield Calculator

Calculate your returns on 91-day, 182-day, and 364-day Treasury Bills with latest CBK rates.

How it works

This tool uses real-time data from official sources (CBK, KRA, Safaricom) updated as of 5/1/2026. Calculations are based on the latest 2026 finance regulations.

How to Invest in Central Bank of Kenya (CBK) Treasury Bills

Treasury Bills (T-Bills) are short-term government debt securities issued by the Central Bank of Kenya (CBK) with maturities of 91 days, 182 days, and 364 days. They are a secure, high-yield investment option with returns backed fully by the government.

How to Start Investing in T-Bills Natively via DhowCSD:

  • Register a DhowCSD Account: Download the CBK DhowCSD mobile app or log in to their web portal to open a Central Depository System (CDS) account instantly.
  • Submit Your Bid: Choose your preferred T-Bill maturity (91, 182, or 364 days). The minimum investment amount is KES 50,000.
  • Understanding Discounted Yields: T-Bills are sold at a discount. If you buy a KES 100,000 T-Bill, you will pay less up front (e.g. KES 85,000) and receive the full KES 100,000 at maturity, pocketing the KES 15,000 difference as interest.
  • Taxation: Note that T-Bill interest earnings are subject to a flat 15% withholding tax at source before payouts.