Interest tis calculated on the amount of overdraft on a daily basis and charged to the account half-yearly, at a rate based on the percentage over the bank's base rate.

利息是根据银行基准利率加上百分点，按逐日的透支金额计算，每半年借记账户。

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That made the central bank's benchmark interest rate of 15.75% in April no bargain, but no excuse for three-figure overdraft rates either.

ECONOMIST: High living