A workplace retirement plan combines several decisions that are easy to blur together. How much should you contribute? Should the contribution be pretax or Roth? Which investments fit the job? What happens to the account when you leave? Each question deserves its own answer.

The plan's actual documents matter. A feature permitted by law is not necessarily offered by your employer, and a benefit described in a recruiting conversation may have conditions. Use your summary plan description, fee disclosure and current investment information alongside these guides.

Leaving a job or reviewing an old account?

Begin with Your old 401(k): compare all four choices. Keeping the former plan, moving to an accepting new employer plan, rolling into an IRA and cashing out have different costs, access rules and tax consequences.

A larger investment menu is not automatically a reason to move. An old plan may offer useful pricing or withdrawal features; another arrangement may better fit your needs. The guide explains how to compare the actual accounts and how the mechanics of a rollover differ from the decision about where the money belongs.

Use the 401(k) options worksheet to record the facts for all four choices. It keeps unknown information visible and asks where each answer came from. It does not award points or automatically select a winner.

Choosing contributions while you are employed?

Traditional or Roth 401(k)? explains the timing of the income-tax trade-off and why a fair comparison uses the same effect on take-home pay. It also separates employee contributions from employer contributions and identifies questions to ask payroll.

The answer can change with income, deductions, expected retirement income and household cash needs. Splitting contributions may be an available choice, but the combined employee deferrals remain subject to applicable limits. Verify the current year and your plan's rules before changing payroll elections.

Understand the money your employer contributes

Employer matching and vesting shows how a match formula works, what vesting means and why contribution timing matters. Your own employee contributions are immediately vested, while employer contributions can have a vesting schedule depending on the plan.

Check whether matching is calculated each pay period and whether the plan has a year-end true-up. Front-loading contributions can produce a different match outcome from contributing throughout the year when the plan's formula and timing differ.

Read the costs and investment menu together

How to read your 401(k) fees and investment menu distinguishes plan administration charges from investment expenses. It helps you compare investments by purpose, risk and cost rather than choosing whichever fund recently returned the most.

A target-date option, index fund or managed service can simplify some decisions, but each has its own allocation, fees and limitations. Understand what the investment owns and how it fits with accounts outside the plan.

Keep a small set of current records

Save the plan description, current fee disclosure, investment fact sheets, beneficiary confirmation and recent statements. Record the administrator's contact details and the date each document was obtained.

When something changes, ask for the rule in writing and check the first affected statement or paycheck. A correct election that was never implemented does not accomplish the goal. This section is written for employees and households; employer plan design and business-owner responsibilities are outside this buildout.

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