TSMC Arizona 401(k): How to Verify the Match, Vesting and Investments

TSMC-specific foundation

TSMC Arizona's match and vesting must come from the employee's plan documents

Current TSMC Arizona job postings confirm a 401(k) with employer contributions but do not publish a universal formula. The apprenticeship page states an employer match up to 5% for that program, while also noting contract-specific eligibility. That is useful evidence for apprentices, not proof that every Arizona employee has the same match or vesting terms. The summary plan description and account statement remain the controlling sources.

TSMC publicly describes benefits as region-specific. Recruiting materials confirm a retirement benefit for Arizona roles, but detailed match, vesting and distribution terms should come from the current U.S. participant documents.

Download the summary plan description, fee disclosure, investment menu and most recent statement. Note the plan name and document date so an older version does not control the analysis.

The contribution formula explains what the employer may add. Vesting explains how much of an employer-funded balance the participant keeps after leaving. Employee salary deferrals are generally fully vested, but current plan terms control employer sources.

Check whether contributions are per-pay-period, annual or discretionary and whether a year-end employment requirement applies.

How the pieces interact

Separate employee savings, employer contributions and ownership

A statement can contain fully vested employee contributions and employer-funded money subject to a schedule or other conditions. A quoted match percentage also does not reveal eligible compensation, per-pay-period mechanics, true-up rules or year-end employment requirements. Employees changing jobs should confirm those details before deciding whether an expected employer amount will actually be credited or retained.

Compare target-date, index and active options using asset class, risk, expense ratio and role in the complete household portfolio. Include Taiwan and U.S. accounts when evaluating allocation.

A low-cost diversified option can be useful, but the correct allocation depends on time horizon, reserves, job risk and other holdings.

Confirm whether the account can remain, whether partial distributions are permitted, how loans behave and which sources can be rolled over. A direct rollover generally avoids mandatory withholding that applies when an eligible distribution is paid to the employee.

An advisor familiar with TSMC Arizona can compare destinations after the source and plan-feature inventory is complete.

Put the guide to work

Create a source-by-source TSMC 401(k) record

Keep a current plan summary, fee disclosure and statement labeled by plan year. Review the employee contribution needed for employer value, the vesting percentage today, investment costs, loan rules and distribution options as separate facts.

Use the sequence below as preparation, not as individualized advice. Current TSMC documents control employer benefits, and qualified tax or legal professionals should confirm decisions in their areas.

• Find the current Arizona summary plan description
• Identify every employee and employer contribution source
• Verify the formula, eligible pay and deposit timing
• Confirm vesting today and at likely departure dates
• Review investments, fees, loans and rollover rules independently
• Eligible compensation
• Employee contribution needed
• Employer formula and maximum
• Deposit timing