Q: As concerns withholding tax on foreign-but-non-US dividends in registered accounts: the member's concerns are certainly valid, but it bears mention that a great number of ADRs also give holders the option of receiving dividends either as shares, or as shares converted immediately (by the issuer) to cash, neither of which option involves withholding taxes.
To be sure, this exposes you to risk as concerns the share price at the time shares are sold, but for corporations with liquid shares, this is unlikely to cause significant losses, and, certainly, should not cause losses anywhere near the tax hit.
The complication in this arrangement is that not all ADRs offer the most-tax-efficient option by default, i.e., for such ADRs you would need to give instructions to your broker prior to some cut-off date. This sort of information falls under the general heading of 'Corporate actions', i.e.: supposing you trade online, you would need to check your inbox for a corporate action notice re: the ADR in question.
To be sure, this exposes you to risk as concerns the share price at the time shares are sold, but for corporations with liquid shares, this is unlikely to cause significant losses, and, certainly, should not cause losses anywhere near the tax hit.
The complication in this arrangement is that not all ADRs offer the most-tax-efficient option by default, i.e., for such ADRs you would need to give instructions to your broker prior to some cut-off date. This sort of information falls under the general heading of 'Corporate actions', i.e.: supposing you trade online, you would need to check your inbox for a corporate action notice re: the ADR in question.