Business Investment Accounts in Kenya 2026: Where Smart Companies Park Idle Cash
Leaving company float in a current account costs real money, KES 5M idle for a year forgoes over KES 400,000 of net interest in 2026. Corporate MMF accounts, call deposits, fixed deposits and T-Bills compared for Kenyan businesses.
Most Kenyan SMEs run their entire float through a current account earning zero. In a year when money market funds pay 10%+ gross and even call deposits pay 5–7%, that is an expensive habit: idle KES 5 million forgoes roughly KES 400,000+ of net interest annually. A business investment account fixes it without complicating operations.
The four vehicles, honestly compared
| Vehicle | 2026 gross yield | Access | Best for |
|---|---|---|---|
| Corporate MMF account | 8.4–11.4% | 1–3 days | Operating float, tax provisions |
| Call deposit | 5–7% | Same day | Payroll buffer weeks |
| Fixed deposit (negotiated) | 8–11% | Locked to maturity | Known future outlays |
| Treasury Bills | 8.3–8.6% | 91/182/364 days | Large reserves, zero credit risk |
All four suffer 15% withholding tax on interest. For companies the WHT on interest is creditable against corporation tax (unlike for individuals, where it is final), your accountant will want the certificates either way.
The standard SME setup
Tier 1, this month’s payments: current account, earning nothing, holding only what clears within ~30 days.
Tier 2, the buffer: a corporate MMF account holding 1–3 months of operating costs. Registration needs the usual KYC pack (certificate of incorporation, CR12, KRA PIN, directors’ IDs, board resolution); most fund managers open corporate accounts in days. Model the interest on your float with the MMF calculator.
Tier 3, reserves and provisions: cash earmarked for dividends, CAPEX or January’s tax bill goes into a negotiated FD or a T-Bill maturing just before the outlay. A company can bid at CBK auctions through its bank or via its own DhowCSD account.
Mistakes that cost real money
Chasing yield with the payroll buffer, if a redemption delay would make you miss salaries, that cash belongs in same-day instruments.
Ignoring KDIC limits, bank deposit insurance covers only KES 500,000 per bank; large FD balances are unsecured exposure to that bank. T-Bills carry no such cap.
Forgetting inflation, at 6.7% inflation, even 5% call-deposit interest is a real-terms loss. Aim to keep Tier 2 and 3 cash at or above the inflation rate net.
Not investment or tax advice, confirm current rates and the WHT treatment for your entity with your fund manager and accountant.