Retirement Has More Than One Important Birthday
Retirement planning is packed with age-based rules, and missing one can affect taxes, health coverage, or monthly benefits. Familiar ages are only part of the story. Several lesser-known milestones create windows to save more, avoid penalties, or time withdrawals more carefully.
Age 50: Your 401(k) Catch-Up Opens
At 50, many workplace retirement plans let you contribute beyond the standard limit. In 2026, the basic 401(k), 403(b), and governmental 457 limit is $24,500, while the general age-50 catch-up is $8,000, potentially raising the total to $32,500.
Age 50: IRAs Get A Catch-Up Too
Traditional and Roth IRAs also offer an age-50 catch-up. For 2026, the regular IRA contribution limit is $7,500, and people 50 or older can add $1,100. Income and workplace-plan coverage can still affect eligibility for some IRA tax benefits.
Age 55: The HSA Catch-Up Arrives
HSA-eligible people can contribute an additional $1,000 annually beginning at 55. For 2026, the regular HSA limit is $4,400 for self-only coverage and $8,750 for family coverage. Spouses need separate HSAs if each wants to make an age-55 catch-up.
Age 55: The “Rule Of 55” Can Matter
If you leave an employer during or after the calendar year you turn 55, withdrawals from that employer’s qualified plan may avoid the usual 10% early-distribution tax. The exception generally applies to workplace plans, not IRAs, and plan rules still matter.
Age 59½: The Early-Withdrawal Tax Usually Ends
At 59½, distributions from IRAs and many retirement plans generally stop being subject to the additional 10% early-distribution tax. Pretax withdrawals can still count as taxable income, so reaching this age does not suddenly make retirement money tax-free.
Age 60: Survivor Benefits Can Begin
A surviving spouse may be able to claim Social Security survivor benefits at 60, or earlier in certain disability situations. Starting before survivor full retirement age generally means a reduced payment, so the first eligible month is not automatically the best filing date.
Age 60: Survivors Have A Filing Option Others Don’t
Social Security’s deemed-filing rules apply to retirement and spousal benefits, but not survivor benefits. An eligible surviving spouse may therefore claim one benefit first and switch to another later, depending on which approach provides the higher benefit over time.
Ages 60 To 63: A Bigger Catch-Up Window
Workers who turn 60, 61, 62, or 63 can qualify for a larger workplace-plan catch-up. For 2026, it is $11,250 for many 401(k), 403(b), governmental 457, and Thrift Savings Plan participants, instead of the standard $8,000 catch-up.
Ages 60 To 63: Some Catch-Ups Must Be Roth
Beginning in 2026, certain higher-paid workers must make catch-up contributions on a Roth basis when their plan offers Roth contributions. For 2026, the rule generally applies when prior-year wages from the plan sponsor exceeded $150,000.
Age 62: Your Own Social Security Can Start
Age 62 is generally the earliest age to claim Social Security retirement benefits. Filing before full retirement age permanently reduces the monthly amount compared with waiting until full retirement age, trading a longer payment period for smaller monthly checks.
Age 62: Working Can Temporarily Reduce Checks
Claiming Social Security before full retirement age while working can trigger the annual earnings test. If earnings exceed the limit, Social Security may withhold some benefits. At full retirement age, it recalculates the benefit to credit months when checks were withheld.
Around Age 63: Medicare Looks Back At Income
Medicare’s income-related surcharges are generally based on tax-return information from two years earlier. That makes income around 63 especially relevant for someone enrolling at 65. Large gains, Roth conversions, or other income spikes can affect future Part B and Part D costs.
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Age 63: The 2026 IRMAA Thresholds Are Easy To Miss
For 2026 Medicare premiums, the first IRMAA tier begins above $109,000 of modified adjusted gross income for individual filers and $218,000 for married couples filing jointly. Crossing a threshold moves you into a higher income-related premium tier.
Age 64 And 9 Months: Medicare Enrollment Opens
For most people, Medicare’s Initial Enrollment Period begins three months before the month they turn 65 and lasts seven months. Missing the proper enrollment window can mean delayed coverage or late-enrollment penalties unless a Special Enrollment Period applies.
Age 65: Medicare Eligibility Changes The Checklist
Medicare eligibility generally begins at 65, but eligibility does not always mean everyone should enroll in every part immediately. People covered through current employment may have different enrollment options, so the timing of Part B deserves attention before leaving employer coverage.
Age 65: Medicare Can Shut Down HSA Contributions
Once you are enrolled in Medicare, your HSA contribution limit generally becomes zero for months of Medicare coverage. Retroactive Medicare coverage can create excess HSA contributions if you kept contributing during months later treated as covered.
Age 65: HSA Withdrawals Get More Flexible
After 65, the additional 20% tax on HSA withdrawals not used for qualified medical expenses no longer applies. Nonmedical withdrawals can still be taxable income, while qualified medical withdrawals can remain tax-free.
Full Retirement Age: The Earnings Test Ends
At Social Security full retirement age, earnings from work no longer reduce retirement benefits under the earnings test. Full retirement age depends on birth year and ranges from 66 to 67 for people reaching it now, with 67 applying to those born in 1960 or later.
Full Retirement Age: You Reach Your Unreduced Benefit
Full retirement age is when you can receive 100% of your scheduled Social Security retirement benefit based on your earnings record. Claim earlier and the monthly amount is reduced; delay beyond it and delayed retirement credits can increase the payment.
Age 70: Delayed Retirement Credits Stop
Waiting to claim Social Security after full retirement age can increase the monthly benefit, but the increase stops at 70. For someone born in 1960 or later, claiming at 70 produces 124% of the full-retirement-age benefit.
Age 70½: Qualified Charitable Distributions Begin
IRA owners age 70½ or older can make qualified charitable distributions directly to eligible charities. The 2026 QCD limit is $111,000 per person. Once RMDs apply, a qualifying QCD can also count toward that year’s required distribution.
Age 73: RMDs Begin For Many Current Retirees
Many people now entering their required-distribution years generally must begin RMDs at 73. Traditional IRAs, SEP IRAs, SIMPLE IRAs, and many workplace plans are covered by RMD rules, although some workplace-plan participants can postpone distributions until retirement.
Age 75: A Later RMD Age Is Coming
SECURE 2.0 raises the applicable RMD age to 75 for people reaching the law’s later phase-in, generally those born in 1960 or later. Missing a required distribution can trigger an excise tax, while delaying a first RMD can sometimes bunch two taxable distributions into one calendar year.
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