Rollover interest charges

I can't get my head around rollover interest charges, anyone care to explain. At babypips.com :

"Interest is paid on the currency that is borrowed, and earned on the one that is bought. If a client is buying a currency with a higher interest rate than the one he/she is borrowing, the net differential will be positive (i.e. USD/JPY) - and the client will earn funds as a result."

So if I sell USD/JPY, without having any USD, then there will be rollover interest charges if I don't buy back USD/JPY in the same day?

On a separate note, for intraday selling / buying on margin, will there be any interest payment required? since we are using borrowed money from the broker (correct me if i am wrong).

Yes, you will pay a whopping 41 cents for holding that position past 1700 ET. Hardly enough to alter your trading strategy or get your panties bunched up (whichever comes first).

You can download the calculator here: http://currensys.com/FreeForex.php

Welcome to Forex Factory.

is rollover charge is same between broker?because,some broker have all negative swap,and some don't..

Thanks phil, the calculator will come in handy

If you owe money your broker will certainly pass that along to you. Unfortunately, if your broker owes you, they will keep some or all of the swap. Some brokers will call it an admin or maintenance fee, others don't care what you call it. The smaller your account, the more likely they are to keep the swap.

Right now, the swap is so insignificant that it really isn't worth thinking about.