US 401(k) Growth Calculator

Project your 401(k) balance growth with annual contributions, employer match, and compounding returns.

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How it works

Each year, your contribution plus your employer's match is added to your balance, and the whole balance grows at your expected annual return. This compounding effect is why starting early matters more than the exact contribution amount.

Illustrative estimate only, using simplified/rounded 2026 figures — not tax advice. Actual federal, state, and payroll tax rules are more detailed. Always confirm with the IRS or a licensed tax professional.