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Are there capital gains taxes or dividend taxes if I invest in the U.S. stock market from outside of the country?
The country from which you purchase stock cannot charge you tax on either income or capital gains. Taxation is based on residency, so even when you purchase foreign stock its the tax laws of Malaysia (as your country of residence) that matter. At the time of writing, Malaysia does not levy any capital gains tax and there is no income tax charged on dividends so you won't have to declare or pay any tax on your stocks regardless of where you buy them from. The only exception to this is Dividend Withholding Tax, which is a special tax taken by the government of the country you bought the stock from before it is paid to your account. You do not need to declare this tax as it his already been taken by the time you receive your dividend. The US withholding tax rate on dividends is 30%, although this can be reduced to 15% if there as a tax treaty in place between the US and your country of residence. Malaysia does have a double taxation agreement with the US (see here: http://www.mida.gov.my/env3/index.php?page=double-taxation-agreement) but it is flagged as a "limited" agreement.  You'd need to find the full text of the agreement to see whether a reduced rate of dividend withholding tax would be available in the Malaysia/US treaty. See my other answer for more details on withholding taxes and how to partially reclaim under a double tax treaty: What is the dividend tax rate for UK stock Note: Although the taxation rules of both countries are similar, I am a resident of Singapore not Malaysia so I can't speak from first hand experience, but current Malaysia tax rates are easy to find online. The rest of this information is common to any non-US/UK resident investor (as long as you're not a US person).