It is hard to determine the best level one should use, as it mainly depends on the trader's strategy and the actual vision of upcoming market moves. As a rule of thumb, the longer you expect to keep your position open, the smaller the leverage should be. This would be logical, as long positions are usually opened when large market moves are expected. However, when you are looking for a long lasting position, you will want to avoid being 'Stopped Out' due to market fluctuations.
This way, if 1:500 leverage is used, a trader would be making 500 USD instead of 1 USD. It is of course important to state that a trader can lose the funds as quickly as it is possible to gain them. Now as we have understood the definition and a practical example of leverage, let's take a more detailed look at its application, and find out what the best possible level of gearing in FX trading is. Admiral Markets offers varying leverages which are dependent on client status via Admiral Markets Pro terms.
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.
To trade $100,000 of currency, with a margin of 1%, an investor will only have to deposit $1,000 into her or his margin account. The leverage provided on a trade like this is 100:1. Leverage of this size is significantly larger than the 2:1 leverage commonly provided on equities and the 15:1 leverage provided in the futures market. Although 100:1 leverage may seem extremely risky, the risk is significantly less when you consider that currency prices usually change by less than 1% during intraday trading (trading within one day). If currencies fluctuated as much as equities, brokers would not be able to provide as much leverage.