Retirement Planning 101: IRA vs. 401(k) Explained

Retirement planning doesn't have to be complicated. But the alphabet soup of account types — 401(k), IRA, Roth, Traditional, SEP — can make it feel that way.

Here's a clear, practical guide to understanding your retirement savings options and making the right choices for your situation.

Retirement accounts aren't just savings accounts — they're tax-advantaged vehicles that can dramatically accelerate your wealth building.

The two main advantages:

1. Tax-deferred growth — your investments compound without being taxed each year
2. Tax deductions or tax-free withdrawals — depending on the account type

Over 30–40 years, these tax advantages can add hundreds of thousands of dollars to your retirement nest egg.

A 401(k) is a retirement savings plan sponsored by your employer. You contribute pre-tax dollars directly from your paycheck.

• Contributions come out of your paycheck before taxes
• Reduces your taxable income today
• Investments grow tax-deferred
• You pay ordinary income tax when you withdraw in retirement (age 59½+)
• Early withdrawals (before 59½) face a 10% penalty plus taxes

• Under 50: $23,000/year
• 50 and older: $30,500/year (catch-up contribution)

Many employers match a portion of your contributions — typically 50%–100% of the first 3%–6% of your salary.

Example: You earn $60,000. Your employer matches 100% of the first 4% ($2,400). If you contribute $2,400, you get $2,400 free. That's a 100% instant return.

Rule #1 of retirement planning: Always contribute at least enough to capture the full employer match. Always.

Many employers now offer both options:

Traditional 401(k):

• Pre-tax contributions (reduces income tax now)
• Tax-deferred growth
• Taxed on withdrawal

Roth 401(k):

• After-tax contributions (no immediate tax break)
• Tax-free growth
• Tax-free withdrawals in retirement

Which to choose: If you expect to be in a higher tax bracket in retirement, Roth is better. If you expect a lower bracket, Traditional is better. When uncertain, split contributions between both.

An IRA (Individual Retirement Account) is a retirement account you open yourself, independent of your employer. You have two main options: Traditional and Roth.

• Under 50: $7,000/year
• 50 and older: $8,000/year (catch-up contribution)

• Contributions may be tax-deductible (depending on income and whether you have a 401k)
• Tax-deferred growth
• Taxed on withdrawal
• Required Minimum Distributions (RMDs) starting at age 73

Income limits for deductibility (2026):

• Single with workplace plan: Phase-out $77,000–$87,000
• Married filing jointly with workplace plan: Phase-out $123,000–$143,000

• After-tax contributions (no immediate deduction)
• Tax-free growth and withdrawals
• No RMDs during your lifetime
• Contributions (not earnings) can be withdrawn anytime without penalty

Income limits for Roth IRA contributions (2026):

• Single: Phase-out $146,000–$161,000
• Married filing jointly: Phase-out $230,000–$240,000

If your income exceeds Roth IRA limits, you can still contribute via the "backdoor Roth":

1. Contribute to a non-deductible Traditional IRA
2. Convert it to a Roth IRA

This is a legal strategy used by high earners. Consult a tax professional for your specific situation.

Here's the recommended order for maximizing retirement savings:

1. 401(k) up to employer match — capture all free money first
2. Max out Roth IRA — $7,000/year of tax-free growth
3. Max out 401(k) — contribute up to the $23,000 limit
4. Taxable brokerage account — for savings beyond retirement account limits

The standard recommendation is to save 15% of your gross income for retirement (including employer match).

The 4% rule: At retirement, you can safely withdraw 4% of your portfolio annually. To determine your target nest egg, multiply your desired annual retirement income by 25.

Example: Want $60,000/year in retirement? Target: $60,000 × 25 = $1.5 million

If you're starting retirement savings in your 40s or 50s, you still have time:

• Maximize catch-up contributions ($30,500 in 401k, $8,000 in IRA for 50+)
• Delay retirement by a few years (dramatically increases your nest egg)
• Reduce planned retirement spending
• Consider working part-time in early retirement

The best retirement account is the one you actually use. Start with your 401(k) to capture the employer match, then open a Roth IRA for tax-free growth. Automate contributions and increase them by 1% each year.

Time is your most valuable asset in retirement planning. Start today.

Compare brokerage accounts for IRA investing at DollarSound's Investing hub.