KESONIA, CBR, and the Revised Risk-Based Credit Pricing Model: What Changed for Kenyan Borrowers

Kenyan lending has just gone through its most significant pricing change in years, and most borrowers have not noticed because the headline number on their statement did not move.

Under the Central Bank of Kenya's Revised Risk-Based Credit Pricing Model, every shilling-denominated variable-rate loan is now priced as a published benchmark plus a margin, and banks must disclose that margin by product and by risk band. New facilities moved onto the model from 1 December 2025, and existing facilities were required to transition by 28 February 2026.

The point of the reform is not to raise or lower rates. It is to make them legible. Before, a quoted rate was a single opaque number and comparing two lenders meant comparing two black boxes. Now the components are meant to be visible, published, and comparable across the market.

This guide covers what actually changed, which loans are covered and which are excluded, what happened to loans taken out before the switch, and how your own credit profile now attaches to a specific price. The anatomy of the margin itself, and the levers you can pull on it, is covered in the companion piece How Kenyan Banks Price Your Loan.

Key Insight: The reform did not change what your loan costs so much as who can see why. A bank must now publish its K margin by product and risk band, which means for the first time you can compare two lenders on the same basis before you apply, rather than discovering the difference in a letter of offer. The borrowers who gain are the ones who look before they sign.

Part 1: The Formula

Every covered facility now prices the same way:

$$\text{Interest Rate} = \text{Reference Rate} + K$$

Where the reference rate is either KESONIA or the Central Bank Rate, and K is the bank's margin, built from:

• Operating costs of lending
• Return to shareholders
• The borrower's risk premium, which is the part that varies with you
• Liquidity premium and other approved components defined by the bank

K is reviewed on a quarterly cycle, which matters: it means your rate can move because the benchmark moved, or because the bank re-priced its margin, and those are two different events with two different causes.

The reform's stated aims are transparency, fairness, and stronger monetary policy transmission, meaning that when CBK changes its policy stance, the effect should reach customer loan rates more reliably than it did under the old approach.

Part 2: KESONIA or CBR, and Why the Difference Is Timing

Banks may adopt either benchmark. Many started on CBR and are migrating toward KESONIA.

Here is the part worth understanding. As at mid-2026 the two benchmarks sit almost on top of each other: the Central Bank Rate was 8.75% (as at 8 April 2026) and KESONIA was 8.7469% (as at 16 July 2026). Choosing between them today barely changes your starting rate.

What it changes is how often your rate can move. A KESONIA-linked loan can reprice on market movements; a CBR-linked loan reprices on the policy calendar. In a stable market the distinction is academic. In a volatile one, a daily market benchmark transmits changes to you faster in both directions. If you are budgeting a long-dated facility, ask which benchmark applies and how frequently the bank actually resets, because "can be reviewed daily" and "is reviewed daily" are not the same commitment.

For how policy rate cycles feed into borrowing and portfolio decisions more broadly, see the CBR cycle playbook.

Part 3: Which Loans Are Covered, and Which Are Not

This is the most practically useful part of the reform to understand, because a great deal of Kenyan credit sits outside it.

The exclusions deserve attention because they include some of the most expensive credit in the market. Credit cards, overdrafts, and digital lending are outside this framework. If you are carrying a card balance or rolling a digital loan, the transparency reforms described here do not reach that debt, and the cost comparison still has to be done the hard way using APR and total cost discipline.

Fixed-rate and check-off loans are also excluded, for the straightforward reason that a fixed rate does not track a benchmark. That is not a loophole; it is what fixed means. But it does mean a check-off borrower should not expect their rate to fall when the benchmark does.

Part 4: What Happened to Your Existing Loan

Loans written before the switch had to transition by 28 February 2026, and the transition was designed to be neutral at the point of change.

Existing customers moved across at their current interest rates. The reference rate and margin structure changed underneath, but the rate itself did not jump on transition day. What changed is the machinery that determines future movements, and customers were to be informed of the new benchmark and margin applying to their loan.

When the rate does subsequently move, the adjustment lands differently depending on the loan type:

• Check-off loans: the tenor is adjusted. Your deduction stays the same and the loan runs longer or shorter.
• Non-check-off loans: the instalment is adjusted. Your monthly payment changes.

That distinction has real budgeting consequences. A tenor adjustment protects your monthly cash flow but quietly increases total interest paid if the term extends. An instalment adjustment hits your monthly budget immediately but keeps the end date fixed. Neither is universally better, but you should know which one applies to you before rates move rather than after.

Borrowers in genuine difficulty can access forbearance options including tenor extension, instalment reduction, or a moratorium, assessed case by case. If you are heading toward that conversation, have it early; the options available to a performing borrower are wider than those available to one already in arrears, a point developed in debt consolidation and refinancing.

Part 5: Your Risk Profile Now Has a Price Tag

Under the model, the risk premium inside K is set by an explicit assessment of you, using different inputs by segment:

Retail pricing typically resolves into three bands, low, medium, and high, mapped from credit bureau grades. Broadly, the strongest bureau grades fall into the low-risk band, the middle range of grades into medium, and the weakest grades, along with unclassified files, into high.

What the bands are worth is the number that should motivate you. Across the Kenyan market in 2026, indicative all-in pricing on covered products has tended to sit roughly in these areas, widening as security weakens:

These are rounded market-indicative ranges for illustration, not any single bank's schedule, and not an offer. Actual pricing varies by lender, product, segment, and individual assessment.

The structural point survives the imprecision: moving from the high band to the low band is worth somewhere between one and a half and several percentage points, depending on product. On a KES 5,000,000 mortgage, one and a half points is around KES 75,000 a year. On unsecured borrowing the gap is wider still.

That is the return on maintaining a clean credit file, and it is now an explicit, priced return rather than a vague benefit. If your file needs work, fixing your CRB listing and then building the score deliberately is the highest-yield financial admin available to most Kenyan borrowers.

Part 6: Fees Became Explicit

CBK permits banks to charge facility fees alongside interest under the model, and these must be disclosed to the customer and to CBK. They may include:

• Loan origination and arrangement fees
• Negotiation or access fees
• Commitment fees
• Default and late payment fees

This is a genuine watch-item. A headline rate that looks competitive can be offset by fees applied at drawdown, and the comparison that matters is total cost of credit rather than the interest rate alone. The disclosure requirement is what makes that comparison possible; using it is on you.

Part 7: The Transparency Payoff

The single most useful consequence of the reform, and the one least used by borrowers:

Banks must publish their K component by product category and risk profile. A lender must show, for example, its mortgage margin at low, medium, and high risk. These disclosures sit on CBK's Total Cost of Credit portal, which exists precisely so that customers can compare loan offers across banks on a like-for-like basis.

In practice this means you can now do something that was effectively impossible before: establish what a given lender charges someone with your risk profile, before you apply and before an enquiry touches your credit file.

Two further disclosure points:

• Letters of offer include a full cost breakdown, and total-cost-of-credit calculators are available at application stage to estimate borrowing cost before signing.
• Application and offer documentation was revised for the new model, so ensure you are working from current versions rather than an old form.

The framework does not change prudential lending rules. Retirement-age buffers and Debt Service Ratio limits continue to apply, so affordability constraints are unchanged even where pricing has become more transparent.

Risk Factors

Decision Framework: Six Questions Before You Sign

Which benchmark applies, and how often does it actually reset? Ask for the answer in writing. KESONIA and CBR imply different repricing rhythms.

What is the K margin for my risk band on this product? This is now a disclosable number. Ask for it, then check it against the lender's published disclosure.

Which risk band am I in, and why? If you are not in the top band, ask what specifically places you lower. The answer is usually addressable.

Does a rate change adjust my instalment or my tenor? Determines whether future movements hit your monthly budget or your total cost.

What fees apply, and what is the total cost of credit? Get the all-in figure, not the interest rate. Use the calculator at application stage.

Have I compared at least two lenders on the same basis? The portal exists for this. Comparing before applying also avoids stacking credit enquiries.

Bengula View

Three observations from the desk.

First, this reform rewards preparation more than negotiation. The old system had room for a persuasive conversation about a single opaque number. The new one prices you off a band, and the band is set by your record. The work that lowers your rate now happens months before the application, in how your file and your statements look, not in the meeting.

Second, the exclusions are where the damage still lives. A borrower can be diligently optimising a mortgage margin while carrying revolving card and digital debt that sits entirely outside the framework at multiples of the price. The order of operations has not changed: clear the expensive excluded debt first, then optimise the covered facilities.

Third, the transparency is only worth what borrowers do with it. Requiring banks to publish K by product and risk band is a real shift in bargaining position, but a disclosure nobody reads changes nothing. The practical habit worth forming is simple: before any material borrowing, check the published margins for your risk band across two or three lenders, and treat the letter of offer as something to verify rather than to accept.

Conclusion

Kenya's revised risk-based credit pricing model did not make borrowing cheaper. It made borrowing legible, which over time should do more good.

Your rate is now a published benchmark plus a margin that the lender must justify and disclose by product and risk band. Your credit record attaches to a specific, comparable price. The fees are explicit. The transition protected existing borrowers at their current rates while changing the machinery underneath.

What the framework cannot do is read the disclosure on your behalf, cover the credit card and digital debt sitting outside it, or repair a credit file. Those remain the borrower's work, and they are now worth more than they were, because for the first time the market will show you exactly what they are worth.

Related Reading

• How Kenyan Banks Price Your Loan for the anatomy of the K margin and the levers you control.
• Your Credit Score in Kenya for how the risk band is built.
• How to Fix Your CRB Listing if your file needs repair first.
• The Complete Guide to Borrowing Money in Kenya for the full map of facilities.
• Understanding Interest Rates and APR for costing the excluded products properly.
• The CBR Cycle Playbook for how policy rate moves ripple through.
• Asset Finance vs Conventional Loans and the mortgage decision framework for two covered product classes in depth.

References

• Central Bank of Kenya. The Risk-Based Credit Pricing Framework, the Central Bank Rate (8.75% as at 8 April 2026), and KESONIA (8.7469% as at 16 July 2026).
• Total Cost of Credit portal. CBK's comparison platform, where banks publish benchmark and K margin disclosures by product and risk profile.
• Kenya Bankers Association. Industry implementation of the pricing framework.
• Kenyan bank product literature and customer FAQ material on the revised model, reviewed for the framework mechanics described here.

Rates cited are dated and move. Benchmarks, margins, fees, and risk band definitions vary by lender and are revised periodically; verify current figures with the lender and on the Total Cost of Credit portal before acting.

Indicative ranges are illustrative market observations for education, not any individual lender's pricing schedule and not an offer of credit.

General market education, not individualized financial, tax, or legal advice.