Updated 2026-03-20

How to Invest Your 401(k): Beginner Guide

Step-by-step guide to investing your 401(k). Strategy picker, fund selection, asset allocation, and common mistakes to avoid.

What You Will Learn

This guide covers everything you need to know about how to invest your 401(k): beginner guide. We break down the rules, compare your options, and provide tools to help you make informed decisions about your retirement savings.

Enable JavaScript for the full interactive experience with calculators, live data, and tools.

Pavlo Pyskunov

Pavlo Pyskunov

Managing Director & Investment Fund Director

Pavlo Pyskunov analyzes employer-sponsored retirement plans using IRS publications and DOL Form 5500 filings, helping workers maximize their 401(k) savings through data-driven guidance.

Last updated: 2026-03-20

Related Articles

401(k) Asset Allocation by Age: Investment Guide

401(k) asset allocation by age with interactive tool. How much stock vs bonds at 30, 40, 50, and 60. Expense ratio gu...

401(k) Asset Allocation by Age: Model Portfolios by Decade

Age-based 401(k) allocation models using the Rule of 100, 110, and 120. Visual portfolio breakdowns from your 20s to ...

Target-Date Funds Explained: Glide Path, Fees & vs Index Funds

How target-date funds work in your 401(k). Glide path explained, TDF vs index fund comparison, fee table, pros and co...

Best 401(k) Funds: How to Evaluate Your Plan Options

How to identify top-performing funds in your 401(k). Evaluation criteria, expense ratios, benchmarks, and what matter...