T-Mobile 401(k) Plan

T-Mobile offers an employer match of Competitive employer match - the plan contributed 44% of employee deferrals ($2,427 per participant annually). Use our employer match calculator to see how much free money you could earn.

You can access your T-Mobile 401(k) account through the plan provider's participant portal. The plan serves 69,830 active participants. If you're a current or former employee, use the login link above or contact the plan administrator at the phone number listed on this page. First-time users will need to register using their Social Security number and date of birth.

For 2026, T-Mobile 401(k) participants can contribute up to $24,500 in employee deferrals. Participants aged 50+ can contribute an additional $8,000 in catch-up contributions (total $32,500). Those aged 60-63 can make super catch-up contributions of $11,250 (total $35,750). Currently, T-Mobile participants contribute an average of $5,499 per year in employee deferrals. Employer contributions are separate from these limits.

Many T-Mobile 401(k) plans offer loan provisions. As of the latest filing, T-Mobile participants had $130.7M in outstanding loans (averaging $1,872 across participants with active loans). The IRS limits 401(k) loans to the lesser of $50,000 or 50% of your vested balance. With an average account balance of $131K in the T-Mobile plan, the maximum potential loan amount for a fully vested participant would vary accordingly. Check with your plan administrator for specific loan terms, or see our withdrawal rules guide.

When you leave T-Mobile, you have several options for your 401(k): keep it in the plan (if the balance is over $7,000), roll it over to a new employer's plan, roll it to an IRA, or take a cash distribution (subject to taxes and potential penalties). In the most recent filing year, the plan processed $1.0B in distributions to departing or retired participants. Employer match contributions may be subject to a vesting schedule.

According to the most recent Form 5500 filing, the T-Mobile 401(k) plan has 69,830 active participants managing $9.1B in plan assets. The average account balance is $131K per participant.

Many major employers, including T-Mobile, offer both traditional pre-tax and Roth after-tax 401(k) contribution options. Given that T-Mobile participants average $5,499 in annual deferrals, choosing between Roth and traditional depends on whether you expect your tax bracket to be higher or lower in retirement. Contact the T-Mobile plan administrator for availability.

The T-Mobile 401(k) plan typically offers a range of investment options including target-date funds, index funds, actively managed funds, and potentially company stock. The plan generated $1.8B in total investment income during the last filing year. Use our 401(k) calculator to project growth, or log into your account to see current options.

T-Mobile (TMUS) may offer company stock as an investment option within the 401(k) plan. Be mindful of concentration risk - financial advisors typically recommend limiting company stock to no more than 10-15% of your portfolio, especially given that your employment income already depends on T-Mobile's performance.

For 2026, T-Mobile matches Competitive employer match - the plan contributed 44% of employee deferrals ($2,427 per participant annually). The 2026 employee deferral limit is $24,500 ($32,500 if 50+, $35,750 if 60-63). Use our match calculator to estimate your free money.