Kenya Finance CalculatorOctober 2026
Calculators are for planning and estimation only. Verify final tax, payroll, loan, investment or property figures with the relevant institution or adviser.
Banking / T-Bill returns by amount
T-Bill Returns on KSh 300,000 in Kenya (2026)
A KSh 300,000 91-day Treasury Bill earns about KSh 5,444 after 15% tax. A 364-day bill earns about KSh 21,062. Rates are the CBK auction averages as of 5 November 2026.
Figures last updated 5 November 2026. Based on CBK average auction rates.
KSh 300,000 face value: returns by security
Face value is the amount you receive at maturity. Rates as of 5 November 2026.
| Security | Rate | You pay now | Gross interest | Tax | Net interest |
|---|---|---|---|---|---|
| 91-day T-Bill 15% withholding tax | 8.75% | KSh 293,595 | KSh 6,405 | −KSh 961 | KSh 5,444 |
| 182-day T-Bill 15% withholding tax | 8.845% | KSh 287,328 | KSh 12,672 | −KSh 1,901 | KSh 10,771 |
| 364-day T-Bill 15% withholding tax | 9.0282% | KSh 275,221 | KSh 24,779 | −KSh 3,717 | KSh 21,062 |
| Infrastructure Bond (IFB) Tax-free, 1-year illustration | 12.82% | KSh 265,910 | KSh 34,090 | KSh 0 | KSh 34,090 |
| Fixed Coupon Bond (FXD) 15% tax, 1-year illustration | 12.87% | KSh 265,793 | KSh 34,207 | −KSh 5,131 | KSh 29,076 |
Estimates using CBK average auction rates, not a guaranteed return. Bond rates are from the 5 October 2026 auction and use a one-year simplification; real bonds pay coupons over several years. See the T-Bill calculator or the T-Bills vs bonds guide.
Quick Answers
KSh 300,000 T-Bill FAQs
How much do I earn on a KSh 300,000 91-day T-Bill in Kenya?
At the 8.75% average rate, a KSh 300,000 91-day T-Bill costs about KSh 293,595 today. It matures at KSh 300,000, giving KSh 6,405 gross interest, or about KSh 5,444 after 15% withholding tax.
Which earns more on KSh 300,000: a 91-day or a 364-day T-Bill?
Net interest is about KSh 5,444 over 91 days and KSh 21,062 over 364 days, but your money is locked up longer for the 364-day bill. The 182-day bill earns about KSh 10,771.
Is interest on KSh 300,000 in an infrastructure bond taxed?
No. Interest on infrastructure bonds is tax-free. As a one-year illustration at 12.82%, KSh 300,000 would earn about KSh 34,090. Real IFBs run for several years, so check the specific issue.
Why does the price I pay differ from the face value?
T-Bills are sold at a discount. You pay less than the face value now and receive the full face value at maturity; the difference is your interest. Figures here are estimates from the average auction rate, and your actual rate depends on the auction.