An Overdraft Is the Most Expensive Cheap Money

An overdraft is the easiest credit to use and among the most expensive to hold. The mismatch comes from being priced for occasional use and used continuously.

Designed for days, used for months

An overdraft exists to bridge a short gap between an outgoing and an incoming payment. Priced against a few days, the cost is small and the convenience is real.

In practice many accounts sit overdrawn every month, dipping in shortly after payday and clearing only when the next salary arrives.

Used that way it is not a bridge but a permanent balance, and the pricing that made sense for three days applies to all thirty.

The rate is high because the facility is unsecured and instant

There is no application at the moment of use, no security and no fixed repayment schedule, so the lender prices for the risk that comes with all three.

Rates on arranged overdrafts are typically well above those on personal loans and comparable to or above credit cards.

Unarranged borrowing, where the balance exceeds the agreed limit, is more expensive again and can trigger charges on top of interest.

It hides the true balance

An account with an overdraft shows an available balance that includes borrowed money, so the figure on screen overstates what is actually yours.

Spending decisions are made against that figure, which is how a small overdraft grows steadily into a large one without a single deliberate borrowing decision.

Setting the account to display the actual balance, or mentally treating the limit as zero, removes the illusion that causes the drift.

Clearing it requires breaking the cycle once

Because the overdraft is repaid by each salary and recreated within days, it never reduces. The balance is stable rather than being paid down.

Breaking it needs one month where spending falls below income by the size of the overdraft, which is difficult in a single month and easier spread over several.

Reducing the agreed limit in steps as the balance falls prevents the space being reused, and is the mechanism that makes the reduction stick.

Cheaper structures for the same money

A personal loan for the same amount usually carries a lower rate and a fixed end date, which converts an indefinite balance into a finishing one.

The trade is flexibility, since a loan must be repaid on schedule whereas an overdraft can be left alone in a difficult month.

For a balance that has persisted for a year or more, the flexibility is not being used, and the higher rate is being paid for an option that never gets exercised.