Roll over Effect

Dear all,

I read about Roll Over effect that if a position is held longer than two business days on spot market but I'm still not clear about it. May I clarify the following :

If the base currency that I bought has a higher interest rate than the quoted currency, I'll receive the interest; while if the quoted currency has a higher interest, I'll need to pay the interest ?

Or it is a kind of cost in additional to the spread payable to the broker ?

Thanks for your time ....

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You are right. If the base currency that you bought has a higher interest rate than the quoted currency, you'll receive the interest; while if the quoted currency has a higher interest, the borker will automatically discount the interest from your account.