Visa status generally does not make a workplace 401(k) balance expire. Participate under the current plan, confirm employer-contribution vesting and review options before changing address or taking a distribution.
While employed
Evaluate the 401(k) on its plan and tax features
Current TSMC Arizona recruiting materials describe a 401(k) with employer contributions, but public sources do not provide a universal Arizona formula or vesting schedule. Use the current summary plan description and account statement.
Confirm employee eligibility, employer contribution sources, vesting, investments, fees, beneficiary rules and how a midyear transfer affects payroll. Visa status does not replace those plan terms.
When employment ends
Compare keeping, rolling and distributing before leaving the United States
A former employee may be able to leave the account in the plan, complete a direct rollover to an eligible U.S. account or take a distribution, subject to plan and receiving-provider rules. A cash-out can create tax and possible additional tax.
Ask the plan and any IRA provider whether they service Taiwan residents, accept a foreign address and allow investments and distributions after the move. Obtain the answer before initiating a rollover.
From Taiwan
Documentation can change U.S. withholding
IRS guidance says a plan distribution to a foreign payee generally requires 30% withholding unless documentation establishes U.S.-person status or another valid exception. Taiwan is not on the IRS treaty list, so a Taiwan resident should not assume treaty pension relief.
Coordinate future distributions with U.S. and Taiwan tax professionals. Keep taxpayer-identification, beneficiary, address and account-access records current.
Frequently asked questions
Questions employees ask next
Can a TSMC Arizona visa holder use the 401(k)?
Eligibility comes from the plan and employment category, not a general rule excluding visa holders. Review current enrollment materials.
Do I have to close the 401(k) when returning to Taiwan?
Not necessarily. Balance and plan rules determine whether it may remain; compare provider policies and tax consequences first.
Will a 401(k) distribution in Taiwan have U.S. withholding?
A foreign payee can face 30% withholding absent documentation or a valid exception. Individual tax liability and reporting require professional review.
Primary sources
What this guide is based on
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