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.
A forex or currency futures contract is an agreement between two parties to deliver a set amount of currency at a set date, called the expiry, in the future. Futures contracts are traded on an exchange for set values of currency and with set expiry dates. Unlike a forward, the terms of a futures contract are non-negotiable. A profit is made on the difference between the prices the contract was bought and sold at. Most speculators don't hold futures contracts until expiration, as that would require they deliver/settle the currency the contract represents. Instead, speculators buy and sell the contracts prior to expiration, realizing their profits or losses on their transactions.

Currency carry trade refers to the act of borrowing one currency that has a low interest rate in order to purchase another with a higher interest rate. A large difference in rates can be highly profitable for the trader, especially if high leverage is used. However, with all levered investments this is a double edged sword, and large exchange rate price fluctuations can suddenly swing trades into huge losses.
None of the models developed so far succeed to explain exchange rates and volatility in the longer time frames. For shorter time frames (less than a few days), algorithms can be devised to predict prices. It is understood from the above models that many macroeconomic factors affect the exchange rates and in the end currency prices are a result of dual forces of supply and demand. The world's currency markets can be viewed as a huge melting pot: in a large and ever-changing mix of current events, supply and demand factors are constantly shifting, and the price of one currency in relation to another shifts accordingly. No other market encompasses (and distills) as much of what is going on in the world at any given time as foreign exchange.[71]

For traders—especially those with limited funds—day trading or swing trading in small amounts is easier in the forex market than other markets. For those with longer-term horizons and larger funds, long-term fundamentals-based trading or a carry trade can be profitable. A focus on understanding the macroeconomic fundamentals driving currency values and experience with technical analysis may help new forex traders to become more profitable.
Big news comes in and then the market starts to spike or plummets rapidly. At this point it may be tempting to jump on the easy-money train, however, doing so without a disciplined trading plan behind you can be just as damaging as gambling before the news comes out. This is because illiquidity and sharp price movements mean a trade can quickly translate into significant losses as large swings take place or ‘whipsaw’.
In this video, the Trader Guy looks at the currency pairs EUR/USD and GBP/USD for the June 15th session. EUR/USD — The 1.12 level was tested for support on Friday session. There exists a small consolidation area here, as you can see on the daily chart. To the downside, the 1.10 level is calling. It will be seen more as a risk-off move. Rallies at the moment that show signs of exhaustion are to be used as selling opportunities. […]
National central banks play an important role in the foreign exchange markets. They try to control the money supply, inflation, and/or interest rates and often have official or unofficial target rates for their currencies. They can use their often substantial foreign exchange reserves to stabilize the market. Nevertheless, the effectiveness of central bank "stabilizing speculation" is doubtful because central banks do not go bankrupt if they make large losses as other traders would. There is also no convincing evidence that they actually make a profit from trading.
Caution: Trading involves the possibility of financial loss. Only trade with money that you are prepared to lose, you must recognise that for factors outside your control you may lose all of the money in your trading account. Many forex brokers also hold you liable for losses that exceed your trading capital. So you may stand to lose more money than is in your account. takes no responsibility for loss incurred as a result of our trading signals. By signing up as a member you acknowledge that we are not providing financial advice and that you are making a the decision to copy our trades on your own account. We have no knowledge on the level of money you are trading with or the level of risk you are taking with each trade. You must make your own financial decisions, we take no responsibility for money made or lost as a result of our signals or advice on forex related products on this website.

At the end of 1913, nearly half of the world's foreign exchange was conducted using the pound sterling.[24] The number of foreign banks operating within the boundaries of London increased from 3 in 1860, to 71 in 1913. In 1902, there were just two London foreign exchange brokers.[25] At the start of the 20th century, trades in currencies was most active in Paris, New York City and Berlin; Britain remained largely uninvolved until 1914. Between 1919 and 1922, the number of foreign exchange brokers in London increased to 17; and in 1924, there were 40 firms operating for the purposes of exchange.[26]
The foreign exchange market is the most liquid financial market in the world. Traders include governments and central banks, commercial banks, other institutional investors and financial institutions, currency speculators, other commercial corporations, and individuals. According to the 2019 Triennial Central Bank Survey, coordinated by the Bank for International Settlements, average daily turnover was $6.6 trillion in April 2019 (compared to $1.9 trillion in 2004).[3] Of this $6.6 trillion, $2 trillion was spot transactions and $4.6 trillion was traded in outright forwards, swaps, and other derivatives.
An investor can profit from the difference between two interest rates in two different economies by buying the currency with the higher interest rate and shorting the currency with the lower interest rate. Prior to the 2008 financial crisis, it was very common to short the Japanese yen (JPY) and buy British pounds (GBP) because the interest rate differential was very large. This strategy is sometimes referred to as a "carry trade."