The reason why some accounts, like savings accounts at your local bank, earn interest is: Because the bank pays you to use your money.
Interest in saving account simply means the money you are given by your bank for saving.
The reason why your saving account earn interest is because your bank is paying you to use your money you deposited in your savings account.
Savings account help to save your money while you earn interest on the amount saved.
Inconclusions the reason why some accounts, like savings accounts at your local bank, earn interest is: Because the bank pays you to use your money.
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