The interest on a loan may not be deducted from the principal in advance.

借款的利息不得预先在本金中扣除.

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The interest on a loan may not be deducted from the principal in advance.

借款的利息不得预先在本金中扣除。

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The total amount charged as interest on a loan or mortgage to a certain date.

到某个日期为止，对某个贷款或抵押贷款收取的利息总额。

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It pays interest on the deposit and it collects interest on the loans and it charges a higher interest on the loan than they pay on the deposit.

银行付给存款人利息,同时收取贷款利息,贷款的利息较高,支付给存款人的利息较低

耶鲁公开课 - 金融市场课程节选

This is where the interest on a loan is worked out every year rather than every day or every month.

BBC: News | BUSINESS | Q&A: Are mortgages a rip-off?

It was mostly illegal in Christian medieval Europe to charge interest on a loan of money, for much the same reasons Islamic law forbids it: That, as money is intrinsically unproductive, it is ethically wrong to make money from money.

FORBES: Magazine Article

Issued during a period of historically low interest rates--for adjustable-rate mortgages, they clocked in below 4% in 2003--many mortgages allowed buyers to pay only the interest on a loan for a certain period of time, or pay down very little on loan principal.

FORBES: Surviving The Mortgage Mess