At DBS Bank, not only are you paid interest for the amount that you bank in, you will also be paid for expenses.

Under DBS' new Multiplier Programme introduced on Thursday, the bank will pay an interest on the amount spent on its credit cards as well as monthly instalments on its home loans.

A DBS spokesman said the programme encourages customers to "leverage a more extensive banking relationship with DBS for greater rewards instead of juggling multiple banking relationships."

It estimated that based on existing cash flows, 900,000 or more of their 4.5 million customers qualify for higher interest rates under the programme.

Interest rates for the programme range from from 0.98 per cent per annum to 2.08 per cent.

The interest is based on customer's cash flows.

The minimum cash flow to be eligible for interest payment under the programme is $7,500 a month.

Interest rates are then calculated based on total cash flow from any of four types of transactions: Salary, credit card expenses, home loan instalment, and investment dividends, or monthly dividend credits from a customer's Central Deposit account.

The bank said that more than 1,000 customers signed up for the programme during the two month pilot at the start of the year.

The average interest rate for banks' saving deposits in February was 0.12 per cent, according to the Monetary Authority of Singapore's Monthly Statistical Bulletin.