Overdraft vs Personal Loan in Kenya: Which Is Cheaper for Short-Term Borrowing?

What an Overdraft Actually Is

An overdraft is a pre-approved borrowing limit attached to your current account. Once your bank has set the limit — typically KES 50,000 to KES 500,000 for salaried individuals, depending on your income and account history — you can draw on it whenever your balance hits zero. You only pay interest on the amount you have drawn, and only for the days you have actually used it.

That structure is what makes overdrafts genuinely useful for short-term gaps. If you draw KES 80,000 for ten days and repay it when salary comes in, you are charged interest on KES 80,000 for ten days — nothing more. Banks in Kenya typically charge 15–22% per annum on the drawn balance, calculated daily.

There are other costs to factor in. Many banks charge an arrangement or facility fee of 1–2% of the limit annually or per quarter, and some charge a monthly maintenance fee of KES 500–1,500 regardless of whether you actually drew anything. Read the fine print before assuming the overdraft is free when idle.

What a Personal Loan Actually Is

A personal loan is a fixed amount disbursed to your account in one go. You repay it in equal monthly instalments over an agreed term — say, KES 100,000 over 6 months at KES 17,500 per month. The repayment schedule is fixed from day one. You know exactly what you owe and when.

Kenyan banks typically charge 13–20% per annum on a reducing balance for personal loans. There is usually a processing fee of 1–2.5% of the loan amount deducted upfront. Banks, SACCOs, and digital lenders all offer personal loans, with rates varying substantially between them.

The main trade-off is speed: most bank personal loans take 3–7 working days to process. If you need money by Thursday and it is already Tuesday, a loan may not arrive in time.

When the Overdraft Wins

For very short durations — under 30 days — an overdraft is almost always the cheaper product. The maths is straightforward.

Take an overdraft at 18% per annum used for 15 days:

Interest = 18% × (15 ÷ 365) = 0.74%

On KES 80,000, that is KES 592 in interest. That is it. No processing fee, no monthly instalment to worry about. If salary lands and you pay it off, you are done.

The overdraft also wins when your cash needs are irregular. If you draw KES 30,000 this week, repay KES 20,000 mid-month, and draw KES 15,000 again near month-end, you are only charged for what you used on each day. A loan forces you to pay interest on the full amount even on days you did not need it.

When the Personal Loan Wins

Push the timeline out to 3 months or more and the picture flips.

Consider a worked example. You need KES 100,000 for 3 months (90 days):

The personal loan wins on interest cost — but only if you use the full KES 100,000 throughout the 3 months. If you only needed KES 40,000 for 3 months and borrowed KES 100,000 "just in case," the comparison shifts back in favour of the overdraft. Only borrow what you will actually use.

Also note: the processing fee on a personal loan (deducted upfront) means very short-term loans are inefficient. A 1.5% processing fee on a 1-month loan is effectively 18% per annum on its own. Processing fees make personal loans better value over longer terms, not shorter ones.

The Overdraft Trap

Here is where most people get into trouble. An overdraft is designed for short-term bridging. A lot of Kenyans use it as a permanent credit facility — staying at or near the limit month after month, paying it down just enough to stay within the limit, then drawing it up again.

At that point, you are paying overdraft rates on what is effectively a medium-term loan — and overdraft rates are not designed for that purpose.

At 20% per annum continuously, a KES 200,000 overdraft costs roughly KES 40,000 in interest per year. A structured personal loan for the same amount at 15% reducing balance over 12 months would cost around KES 16,000 in interest — less than half. The overdraft feels more flexible, but flexibility is not free.

If you find that your overdraft is always drawn near the limit and rarely gets paid down fully, you are using the wrong product. Take a personal loan, pay off the overdraft balance, and keep the overdraft facility in reserve for genuine short-term gaps. That switch alone can save you tens of thousands per year.

Cheaper Alternatives Worth Knowing

SACCO emergency loans

If you are a SACCO member, many SACCOs offer emergency or short-term facilities disbursed within 24–48 hours at 12–15% per annum. That is cheaper than most bank overdrafts and cheaper than most personal loans. If you are in a SACCO and have not explored their emergency loan product, ask your SACCO secretary this week.

Digital lenders — with caution

Mobile-based lenders get you money fast, but the cost varies dramatically:

• Fuliza (M-Pesa): 1% per day — that is 365% per annum. Only justifiable if you are repaying within 24–48 hours. Never carry a Fuliza balance for more than a few days.
• KCB M-Pesa: monthly charges; reasonable for 1–2 weeks, expensive beyond that.
• Tala / Branch: annual rates of 30–60%. Fast, accessible, and expensive. Use only for genuine emergencies where you will repay within a month.

None of these compete with a bank overdraft or personal loan for amounts above KES 20,000 over more than a few weeks. Speed is their only advantage.

A Decision Framework

Run through these questions in order before you decide:

• How many days do you actually need the money? Under 30 days: overdraft. Over 60 days: personal loan almost certainly wins.
• How much? Under KES 50,000: overdraft may be fine. Over KES 100,000 for more than 6 weeks: run the numbers on a loan.
• How fast do you need it? Need money today or tomorrow: overdraft or digital lender. Can wait 3–7 days: bank loan or SACCO.
• Are you a SACCO member? If yes and the SACCO offers an emergency loan, check that rate first — it will almost always beat a bank overdraft.
• Is your overdraft always near its limit? If yes, you are using the wrong product. Switch to a term loan and reset.

Full Side-by-Side Comparison

Bottom Line

An overdraft is a genuinely useful product used correctly: bridge your salary gap for a couple of weeks, repay it fully, and it costs you almost nothing. Used as a rolling credit facility that you never fully clear, it becomes one of the more expensive forms of borrowing available to you.

A personal loan is less flexible but more predictable. For anything you need for 3 months or more — or any amount above KES 100,000 that you will be holding for more than a few weeks — the fixed structure of a term loan will almost always cost you less in total interest, especially when you factor in the discipline of a defined end date.

Before you apply for either, spend five minutes with the loan calculator below and run your actual numbers. The difference between the two options at your specific amount and duration will tell you more than any general rule of thumb.