As 90-95% of new forex traders lose money within the first 3-6 months this article helps to guide new forex traders by asking 5 questions that the forex trader needs to know prior to back-testing their forex system.

Let us jump right in...

1. What data type are you using (or going to use)?

I know this sounds strange, especially if you have experience from another market such as stocks as their generally is only one type of data source available. However, in the forex market you can have up to 4 different data types: bid, ask, mid and indicative. Each have their own little nuances.

If you would like to know more about the data types then visit the article written about the perils of indicative prices. As this will save me from having to repeat the information again and boring those who've already read it.

So, if you know you have indicative prices then you know you're in for some good results! However, if you have any of the other three you need to be careful on how stop and limit orders are placed. Ö¯Ãκ㬺ÃÖ¯ÃÎ

As an example: If we had bid price history and we were looking to place a buy entry stop at 0830 EST according to the day's high, then we know that the bid price will not accurately reflect what the actual price of our order should be. You would have noticed that if you placed a buy entry stop at the exact same price as that of the day's high you would have entered prematurely - you would have entered 4 or 5 pips before the high or the low of the day was touched (the exact same amount as the spread your broker offers!).

This leads me into the next most important question...

2. What spread is your broker offering on the currencies you are bask-testing?

You need to know this as this can help you set your slippage settings on each currency.

As our example in question 1 pointed out. We found that our buy at the day's high method did not exactly work because we bought at the BID PRICE high, not the ASK PRICE high - the price that we need when we place our order TO BUY.

Therefore, we enter in a slippage setting representing the spread that would be exhibited by this trade on this currency. copyright dedecms

But knowing at what price to buy is only half the problem... how do we know what quantity to buy?

3. What margin does your broker offer?

If we know at what price to buy our currency at we need to inform our broker on what quantity to buy to fulfill the order. We only know what quantity to buy by the margin that the brokerage firm offers.

Most brokerage firms offer 100:1 leverage, however, some firms offer mini accounts with 200:1 leverage, others only 50:1 leverage.

Find out the margin required.

4. What restrictions does your broker impose?

Now, I don't just mean margin and spread restrictions as I have mentioned above. These are important in their own right, what you need to find out are the details.

This is probably the most important question of all as the fine line between success and failure can be found in the details. Now you can have this questioned by one of two ways: 1. You can find out through experience (generally the most expensive way unless done through the demo account!); or 2. You ask your broker (the cheapest and best way).