To double your account in 240 trading days, you need to clear a profit of 0.2892% every day. A bit more than a third of a percent. But EVERY DAY. And plow all profits back into trading. We trade for a living. If I have a $40k account and I make $144.60 on the first trading day and the same proportional earnings, after expenses, every day, and never draw anything out of my account, I will double my account in a year. Do the math. The first day you earn $144.60 which is 100.2892% of $50k. Next day you start with $50,144.60 and earn .2892% and end up with 1.002892 x 1.002892 x $50k. Tne next day, 1.002892 x 1.002892 x 1.002892 x 50k. And so on. Or 1.002892^240 x $50k, to simplify. To triple your account you need to earn .4588% and to quadruple it, you must earn .5793% and to quintuple it, .6729%.
for 10x, .9640%.
for 100x, 1.9374%
for 1000x, 2.920%
If you earn 1% every day after expenses, and never draw out, you end up with 10.89255x your initial account.
The problem is, there is a range wherein day trading is most efficient, I believe. If you try to put more than a million into play you probably will not get the same percentage results as someone trading with $50k to $100k. I am guessing since I have never had a million to trade with.