Withholding tax on interest from banks and financial institutions.
Withholding tax
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WHT rate
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Net interest
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Tax taken before the money reaches you
When a Kenyan bank or financial institution credits interest to your account, you almost never see the gross amount. The institution withholds tax first and pays only the balance, then remits the slice it kept to the Kenya Revenue Authority on your behalf. This is withholding tax, and it is why the figure that lands in your account is always a touch smaller than the headline rate on your fixed deposit suggested. This calculator reverses the arithmetic so you can see both halves clearly: the tax withheld, and the net interest you actually keep.
The structure is stable and worth knowing even as the exact percentages get revisited in Finance Acts. There is one rate for ordinary deposit and financial interest, a higher rate for bearer instruments, and the question of whether you are a Kenyan resident or not. The rates the calculator applies are described below, and as with any tax figure you should confirm the current numbers against the KRA before treating them as settled.
Three rates for three situations
The default case, ordinary interest from a bank or financial institution, carries 15 percent for residents under the rate this tool applies. Bearer instruments, the kind where the holder rather than a named owner is paid, are treated more harshly at 25 percent, partly because they are harder for the authorities to trace. Non-resident savers are also modelled at 15 percent on ordinary interest here. You select the instrument type and your residency from the dropdowns, and the tool picks the matching rate. The practical upshot is that the great majority of ordinary Kenyan savers sit in the 15 percent bracket, and only a narrow slice with bearer paper meet the 25 percent figure.
KES 80,000 of bank interest, after tax
Run the default numbers. You earned KES 80,000 of ordinary interest as a resident. At the 15 percent rate the calculator applies, the bank withholds KES 12,000 and pays you the remaining KES 68,000. Nothing further is usually due, because for most resident savers this 15 percent is a final tax on bank interest.
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The chart below splits the gross interest into withholding tax and net interest received.
When 15 percent is the end of the story
The phrase that matters most here is final tax. For an ordinary resident, the 15 percent withheld on bank interest is generally the whole tax story for that income. You are not expected to add the interest to your other earnings and tax it again at your marginal PAYE rate, which for a higher earner could be far above 15 percent. That makes interest a relatively lightly taxed form of income for well-paid people. A useful tip when comparing a fixed deposit with, say, a money market fund, is to compare the net rates after withholding tax rather than the advertised gross rates, since the deduction can quietly close a gap that looked wide on paper. One edge case to watch: a bearer instrument at 25 percent or income that does not enjoy final-tax treatment can land differently, so confirm the treatment of any unusual product with the KRA rather than assuming the 15 percent default applies.
Do I have to declare bank interest again on my annual return?
For an ordinary resident, the 15 percent already withheld on deposit interest is usually a final tax, so the income is not taxed a second time at your marginal rate. You may still need to disclose it for completeness when you file on iTax, but it does not generate a fresh bill. Treatment can differ for non-residents and for unusual instruments, so confirm your own position with the KRA.
Are SACCO dividends and Treasury bill returns taxed the same way?
Not identically. SACCO deposit interest and government securities each have their own withholding treatment that can sit at a different rate from ordinary bank interest, and some government paper carries specific rules. This tool models ordinary bank and financial interest at the rates shown, so for SACCO payouts or Treasury bills and bonds, check the rate that applies to that specific instrument with the KRA before relying on the figure here.