The broker basically resets the positions and provides either a credit or debit for the interest rate differential between the two currencies in the pairs being held. The trade carries on and the trader doesn't need to deliver or settle the transaction. When the trade is closed the trader realizes their profit or loss based on their original transaction price and the price they closed the trade at. The rollover credits or debits could either add to this gain or detract from it. rob booker facebook
When you trade forex, you're effectively borrowing the first currency in the pair to buy or sell the second currency. With a US$5-trillion-a-day market, the liquidity is so deep that liquidity providers—the big banks, basically—allow you to trade with leverage. To trade with leverage, you simply set aside the required margin for your trade size. If you're trading 200:1 leverage, for example, you can trade £2,000 in the market while only setting aside £10 in margin in your trading account. For 50:1 leverage, the same trade size would still only require about £40 in margin. This gives you much more exposure, while keeping your capital investment down.
Yet curiously, Chapter 3 in Boris and Kathy's book Millionaire Traders (published in 2007) features an interview with none other than the same Mr Booker, the "100 pip trader" ("in less than 5 years, he's gone from being a $2,500 trader to a client of a major bank who trades a respectable size account" -- see p37). Assuming that B&K performed some background research before selecting their interviewees, then being the subject of such a book creates the impression that Rob has in fact made a 7 figure sum from trading. Hence I don't know what to make of it all.