Short answer:
Yes, a day trader (or any other type of trader) who aspires to live off his trading profits needs a large bankroll to start. But, the actual leverage employed is not the controlling metric here. The metrics which, factored together, make a large initial bankroll necessary are the trader’s profit factor and his income requirements.
Long answer:
A trader who aspires to earn his living trading forex needs the following:
• Step 1 — first, he needs a reliable, consistent trading methodology, with a proven track-record of producing on average x-percent profit per month, month after month, in all sorts of market conditions.
• Step 2 — second, he needs to determine [I]realistically[/I] how much gross income he will have to withdraw from his trading account each month, in order to sustain his lifestyle [I]over the long term.[/I]
• Step 3 — third, he needs to calculate the initial account balance required to make Step 1 accomplish Step 2 — [I]then he needs to fund his trading account with twice that amount.[/I]
Let’s put some numbers on this.
Suppose you have a reliable, consistent trading methodology which you [I]yourself[/I] have used to generate profits averaging 2% per week, week after week, month after month. Two percent per week, compounded over 4.33 weeks per month, is 9% per month (rounded off).
Suppose you determine that you require €4000 in gross income per month (before taxes), in order to maintain your current lifestyle over the long term.
A simple calculation now tells you that 9% of €44445 equals €4000. So, if you bleed your €44445 account of all its profits every month, month after month, you will be able to live off your forex trading. [I]Until something unforeseen strikes the market, or your account.[/I]
In order to (1) protect yourself from the unforeseen, (2) provide for future inflation in the cost of living, and (3) grow your trading account (so that you are not bleeding it of all its profits) — you need to double that €44445 initial balance; let’s round it off to €90000 as a starting amount.
You can tweak these numbers to your heart’s content, but don’t fall into the trap of wishful thinking. Don’t pretend that your trading methodology can produce a higher percentage return on equity than it really can. And don’t pretend that you need less income than your lifestyle actually requires.
That being said, you can plug in the numbers that apply in your particular situation. Keeping the 2%-per-week metric constant for the moment, it’s clear that your income requirement and your required account balance are [I]proportional amounts.[/I] You can reduce (or increase) the income figure by x-percent, and this reduces (or increases) the required balance by the same x-percent.
Also, given a set amount of required monthly gross income, you can determine the effect of changing the profit factor in your account (2% per week, 9% per month, in the example above). The profit factor is [I]inversely proportional[/I] to the required balance. So, if you reduce the profit factor by a certain percentage, you automatically increase the required balance by the same percentage. Note that we are applying a percentage to a percentage, here. Example: if you reduce the 9%-per-month profit factor to 7% per month, you have reduced it by 22.22%. This requires your account balance to be increased by 22.22% to €110000 (rounded off). €90000 x 1.2222 = €110000.
Finally, the most tempting tweak is probably this: “I don’t need to double the required balance calculated in Step 3 (above). Increasing the calculated balance by, say 25%, should be good enough.” And maybe you’ll get by with that. However, [I]my suggestion[/I] is doubling it (a 100% increase). This increase in the calculated balance provides protection against a host of nasty events, and it provides a means for building wealth (which, presumably, your monthly income withdrawals cannot provide). So, in my view, if you cheat this particular provision of the plan (above), you are just cheating yourself.
It’s tragically naive to think that you can fund a forex trading account with €1000, or some other tiny amount, and — because you’ve discovered the Holy Grail of trading — you can start living off the profits from your tiny account. If you try that, and it works for a month or two, celebrate your good luck — because that’s all it is. Take some of your windfall profits out of your account, and take your wife or girlfriend out for a fancy dinner. Then, get serious, and properly fund a trading account that actually can make it possible for you to quit your job, and trade for a living.
How you manage to properly fund your account is another discussion, altogether. But, slowly and steadily building a tiny hobby account into serious money is one good way — if you have the profitable trading methodology, the required discipline and the required patience.
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