It's much higher than my current job's income.

I haven't use the profits to buy car / property yet. But I've been receiving calls from banks regarding my transaction.

Besides stocks trading, what about cryptocurrency trading's profit? Does it fall under the same category?

Really appreciate you sharing the information.
For those of you full-time traders, is it possible to setup a sdn bhd to report taxes or most of you guys just register sole proprietorship?
What do you put for your job position and job nature when registering the business?

I think below RM100,000 it makes more sense to get a sole proprietorship, however my annual chargeable income already far exceeds that amount, so sdn bhd has lower tax rate. Sdn bhd is only a few thousands to maintain annually and easier to apply for loan from banks, which is the main purpose why I want to report my profits for taxes.

To be more specific, for a crypto full time trader/investor, can we even setup a sdn bhd?

4. How will my income from trading be taxed? Do I use the numbers from tax statements given by the broker?

For your income to be taxed, you need to show funds in the bank account. As long as the money is in the brokerage account, it won't be taxed as there are no incoming transactions. You can make RM1 million realized gains (sold for profit) but if you never transferred it to your bank account, what will you show to the taxman?

Following up on this 4th point, I reckon when we are not applying for loan, we can just withdraw the min. amount of expenses monthly from brokerage account to our bank account, so as to pay the min. tax to LHDN.
And when we would like to apply for loan, we simply up the withdrawal amount and match the to be reported annual income (or annual withdrawal amount) to the loan amount desired accordingly. (eg. maintain below 40% DSR monthly)

What do you think of this?

Just my guesses.
If I am the loan officer, by just looking at Yr money transferred from Yr investment brokerage,....
How to know if you are not withdrawing Yr own invested monies but realised profits?
How do I know if your luck in winning is not a one time incident but a histories of proven winning streaks that can hv the ability to service the loan repayment amount through out that loan duration?

6. Will I have any problems applying for loans for a car or house, since I dont have monthly payslips to show?

Buying a car should not be a problem - the car salesperson can usually help you "kautim" with the banker. But for a house, yes.
They dont care where the money comes from but they want to know how much tax you have paid (and this is the first thing they will look at). From the tax payments, they can estimate your yearly income and if you are eligible for a loan based on other criteria (i.e credit report)
Again you can have RM1million cash in your bank account but if you have never taken a loan, no credit cards, no utility bills and have clean record with Bank Negara - most probably your loan will be rejected.

I am not sure how the loan officer will view an application of such nature.

But referring to author's 6th point, source of income doesn't seem to matter.
If this is true, a combination of below 2 points should suffice for loan application
a. Income tax report with sufficient annual income for your desired loan amount
b. Good credit history in loan & card repayment