401k Calculator & Guide
Get clear, practical answers to common questions about workplace retirement plans, contributions, fees, investments, withdrawals, and retirement rules.
Search the topic cards below to find a relevant guide.
Choose a topic to explore the basics, understand your options, and prepare better questions for your plan administrator or financial professional.
Understand employer matches, contribution formulas, vesting schedules, and how to review your benefits.
Explore contributions → 💵Explore contribution percentages and examples to help you evaluate how much of your pay to save.
View salary examples → 🧾Learn about common 401(k) fees and where to look for plan and investment expense information.
Understand fees → 🚪Review common options for an old 401(k), including keeping the account, a rollover, or a distribution.
Review your options → 🔄Organize the questions to ask when moving from one employer's retirement plan to another.
Plan your transition → 📘Learn how traditional 401(k) contributions and tax-deferred growth generally work.
Learn the basics → 📤Understand why access to retirement money can depend on age, plan terms, and the type of distribution.
Review withdrawal rules → 🗓️Learn the difference between the early-distribution penalty rules and ordinary income tax.
Understand age rules → ⚖️Compare important differences between borrowing from a plan and taking money out permanently.
Compare the options → 📈Explore how stocks, bonds, and diversification may play different roles in a retirement portfolio.
Explore investments → 🧭Connect your retirement goals, savings, expected expenses, and potential sources of income.
Plan ahead → ✅Use a structured checklist to organize important retirement planning tasks and account reviews.
View the checklist → 🎯Understand how retirement savings benchmarks should be interpreted in light of individual circumstances.
Explore savings benchmarks → 🌅Review common decisions about managing an account and taking distributions after leaving work.
Explore retirement options → 📅Get an introduction to RMDs and why deadlines can depend on age, account type, and employment status.
Understand RMDs → ⏰Learn which factors affect the beginning date for required minimum distributions.
Review starting ages → 🧮Understand the basic calculation method and the role of IRS life-expectancy tables.
Learn the calculation → 📄Learn how distributions from traditional retirement accounts are generally treated for tax purposes.
Explore RMD taxes → 🔢Estimate a required minimum distribution using relevant account information and assumptions.
Open the calculator → 🏛️Understand pension basics and how a defined-benefit plan may fit into retirement income.
Learn about pensions → 📂Explore IRA basics and how these accounts differ from workplace retirement plans.
Explore IRAs → 🌱Learn how Roth IRA contributions, account rules, and qualified withdrawals generally work.
Understand Roth IRAs →If you are dealing with a 401(k) question for the first time, these three steps can help you gather the right information.
Look for your summary plan description, fee disclosures, account statement, and the plan's official website.
Are you choosing a contribution rate, reviewing investments, changing jobs, or considering a distribution? The right answer depends on the question.
Contact your plan administrator or benefits team about eligibility, deadlines, fees, distribution options, and required paperwork.
Federal tax rules set important boundaries, but plans can differ in their investment options, matching formulas, vesting schedules, loan provisions, and distribution procedures. Confirm details with your plan administrator before acting.
Quick answers to common questions. Your plan documents and current IRS guidance should be used to verify the rules that apply to your situation.
A 401(k) is an employer-sponsored retirement savings plan that allows eligible employees to contribute part of their compensation to an individual account. Depending on the plan, employers may also contribute.
Traditional contributions are generally made before federal income tax, while designated Roth 401(k) contributions are made after tax. The tax treatment of withdrawals differs.
There is no single contribution rate that suits everyone. Consider your budget, emergency savings, high-interest debt, employer matching formula, retirement timeline, and the applicable annual contribution limit.
If you are eligible for an employer match, review the plan's formula and vesting rules. A match is subject to the plan's terms and may not be fully yours immediately.
Yes. Investment values can fall, and the value of your account depends on the investments you hold, fees, contributions, and withdrawals. Diversification can help manage some risks but does not guarantee a profit or prevent losses.
Review the investment options and risk information in your plan materials before making investment decisions.
Depending on your balance and plan rules, possible options may include leaving the account in your former employer's plan, moving eligible funds to a new employer plan, rolling funds into an IRA, or taking a distribution.
Taxes, potential penalties, fees, investment choices, and creditor protections can differ. Review the details before requesting a transfer or withdrawal.
Distributions from a traditional 401(k) are generally included in taxable income, although the treatment depends on the source of the money and the transaction. An additional tax may apply to some early distributions unless an exception applies.
Qualified distributions from a designated Roth 401(k) can receive different treatment when applicable requirements are met. Confirm the details before taking money out.
The starting age and deadline depend on applicable federal law, your date of birth, the account type, and—in some cases—whether you are still working for the employer sponsoring the plan. Beneficiary rules can be different.
Check current IRS guidance and your plan administrator for the rule and deadline that apply to your account.
Start with your plan administrator for account-specific information. The IRS provides tax guidance, while the U.S. Department of Labor's Employee Benefits Security Administration offers information about employer-sponsored retirement plans and benefits-related issues.
Use the official resources listed below for current information and contact options.
Use government resources to verify current rules, understand your rights, and find additional guidance.
Official information about retirement plans, tax treatment, contribution rules, and required distributions.
Visit IRS retirement plans ↗Retirement plan information, employee benefit protections, and resources from the Employee Benefits Security Administration.
Visit EBSA ↗Investor education resources covering investment basics, diversification, and risk.
Visit Investor.gov ↗For your account balance, plan fees, employer match, vesting, loan provisions, and distribution paperwork, use the contact details in your plan documents.
401k.blog · Retirement education and planning resources
Clear guides, useful calculators and practical retirement resources to help you understand your 401(k), contributions, employer matching, Roth options, rollovers and long-term savings.
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