The tax saved by raising your pension contribution.
PAYE saved per month
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Extra contribution
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Net cost to you
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New take-home
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Trading a little take-home now for a bigger pension
Salary sacrifice is one of the quietest ways to cut your PAYE bill in Kenya, and most employees never use it deliberately. The idea is simple. When you direct part of your salary into a registered retirement scheme, that money is treated as an allowable deduction and comes off your pay before the PAYE bands are applied. You pay tax on a smaller figure, so the contribution costs you less than its face value. This tool compares your take-home at a current contribution and a proposed one, then shows the PAYE you stop paying and what the top-up really costs you out of pocket.
It is built for the salaried professional who already covers the basics and has room to save more, the person weighing whether to push an extra few thousand shillings a month into a pension, and anyone trying to see the after-tax cost rather than just the headline number. If you are self-employed or contribute through a personal scheme, the deduction logic is similar but the mechanics of claiming it differ, so treat the figures here as the employee case.
Why each shilling of contribution costs you less
The deduction is not unlimited. The relief this calculator applies is the lowest of three figures: your actual contribution, 30 percent of your pensionable pay, or a monthly cap of KES 30,000 (KES 360,000 a year). Below that ceiling, every shilling you contribute reduces your taxable pay by a shilling, so the tax you avoid equals your marginal rate times the contribution. Kenya runs a progressive PAYE scale, and the rate this tool uses on the top slice of a typical mid-to-high salary is 30 percent. That is why a contribution sitting inside the 30 percent band returns 30 percent of itself in saved tax. Push past the KES 30,000 cap and the extra still leaves your bank account, but it earns no further relief, so the marginal benefit drops to zero. These thresholds have moved with recent Finance Acts, so confirm the current cap with the Kenya Revenue Authority before you fix a contribution rate.
A 20,000 a month top-up on a 150,000 salary
Take the tool defaults: gross pay of KES 150,000 a month, nothing going into a pension today, and a proposed contribution of KES 20,000. The other statutory deductions cancel out of the comparison, so the whole KES 20,000 sits under the deductible cap, lands inside the 30 percent band, and shaves a clean KES 6,000 off the monthly PAYE.
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So KES 20,000 a month into your retirement pot costs you only KES 14,000 in lost take-home. The live chart in the results panel above shows the split: the dark portion is what genuinely leaves your pocket, the teal portion is the tax the KRA would otherwise have taken.
The mistakes that quietly waste the relief
The most common error is contributing past the KES 30,000 monthly cap and assuming the whole amount is still working for you on tax. It is not. Once you cross the ceiling, the extra is pure deferred saving with no tax discount, which may still suit you for retirement reasons but should be a conscious choice. A second trap catches lower earners. If your contribution is large enough to drag your taxable pay down across a band boundary, only part of it is relieved at the higher rate and the rest at the lower one, so the average saving is less than your top marginal rate. The tool handles this automatically because it recomputes the full PAYE at each contribution level rather than applying a flat rate.
A practical tip: if your employer offers to match contributions, the matched portion is effectively free money on top of the tax relief, so prioritise hitting the match before topping up beyond it. And remember that money in a registered scheme is locked until the rules allow access, so do not sacrifice so much salary that you cannot cover everyday costs.
Does my employer's contribution use up my relief cap?
Generally the deductible cap looks at the contributions made on your behalf to the registered scheme. If your employer already contributes a meaningful amount, your own room under the KES 30,000 monthly cap can be smaller than you think. Check your payslip and your scheme statement, and confirm how your specific arrangement is treated with the KRA, because the way combined contributions count toward the cap has been a moving target.
Is salary sacrifice better than just claiming pension relief at year end?
For PAYE-employed people the deduction is usually applied at source month by month, so you feel the higher take-home immediately rather than waiting for a refund. The end result on total tax is the same, but the monthly cash-flow benefit of having it deducted before PAYE is real. If your scheme is not set up for payroll deduction, you may instead claim it through your annual return, so ask your HR or payroll team how yours is processed.