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Money Glossary
Investing & Retirement

401(k)

Also called: 401k, 401 k, 401(k) plan, retirement plan

A savings plan for when you stop working, offered by your job. Money comes right out of your check and can grow for years.

Example

Each payday, 5% of your pay goes into your 401(k) before you even see it.

Why it matters

If you change jobs, take your 401(k) with you. Don't cash it out early, or you may pay taxes and fees.

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For learning, not personal financial, tax or legal advice. Rules and limits can change each year, so check official sources (like IRS.gov or your plan's documents) or a trusted pro before big decisions.