If you were born in 1964, your full retirement age for Social Security is 67. That is the age at which you can collect 100% of the monthly benefit you have earned through payroll taxes. You can start as early as 62 with a permanently smaller check, or wait as late as 70 for a permanently larger one. Anyone who reaches age 62 after December 31, 2021, has a full retirement age of 67 under federal law, and the 1964 birth cohort turns 62 in 2026, squarely inside that group.1Office of the Law Revision Counsel. 42 USC 416 – Additional Definitions
What You Get at Age 67
Your monthly benefit at 67 equals your primary insurance amount, which the Social Security Administration calculates from your 35 highest-earning years. Each year of earnings is adjusted for wage inflation, averaged, and run through a formula to arrive at your monthly check.2Social Security Administration. Social Security Benefit Amounts If you worked fewer than 35 years, the SSA fills the missing years with zeros, which pulls your average down. Even a few extra working years in your early 60s can replace those zeros and lift your benefit.
Claiming at 62: About a 30% Cut for Life
Age 62 is the earliest you can file. Because that is 60 months before your full retirement age, the SSA permanently reduces your monthly payment by roughly 30%.3Social Security Administration. Retirement Age and Benefit Reduction The formula shaves 5/9 of one percent for each of the first 36 months you claim early, then 5/12 of one percent for every additional month.4Social Security Administration. Early or Late Retirement
In dollar terms, a benefit that would have been $2,000 per month at 67 drops to about $1,400 at 62. That reduction sticks for life. Annual cost-of-living adjustments still apply, but they compound on the lower base, so the gap never closes. Claiming early also caps what your spouse can receive as a survivor: the maximum survivor benefit is limited to what you were collecting when you died.
Cumulative totals from claiming at 62 versus 67 roughly break even sometime in your late 70s. If you expect an average or longer lifespan, the math favors waiting. If your health is poor or you need the income now, filing early can still be the right call.
Claiming Between 62 and 67
You do not have to pick one of the extremes. Every month you delay past 62 reduces the size of the permanent cut. Filing at 63 leaves a smaller reduction than filing at 62; filing at 65 leaves a smaller reduction than filing at 63. The 5/9 and 5/12 monthly percentages above apply in either direction, so you can estimate your own figure based on how many months short of 67 you claim.
Waiting Until 70: A 24% Boost
For every month you wait past 67, the SSA adds delayed retirement credits at two-thirds of one percent per month, or 8% per year.5Social Security Administration. Delayed Retirement Credits Over the three years from 67 to 70, that adds up to a 24% permanent increase.6Social Security Administration. 20 CFR 404.313 – What Are Delayed Retirement Credits and How Do They Increase My Old-Age Benefit Amount A $2,000 benefit at 67 becomes roughly $2,480 at 70. Credits stop accruing at 70, so waiting beyond that gains you nothing.
The higher base also compounds through annual cost-of-living adjustments. A 3% COLA on $2,480 adds $74 per month; the same COLA on the $1,400 early-claim amount adds $42. Over 15 or 20 years, that difference widens considerably.
If you file after reaching full retirement age, you can request up to six months of retroactive benefits paid as a lump sum. The SSA cannot pay retroactive benefits for any month before you reached full retirement age or more than six months in the past.5Social Security Administration. Delayed Retirement Credits Taking that lump sum permanently sets your ongoing monthly amount at what it would have been six months earlier, so you give up some delayed credits in exchange for immediate cash.
Working While Collecting Before 67
If you claim before 67 and keep working, the SSA applies an earnings test. In 2026, the annual limit is $24,480. Earn above that and the SSA withholds $1 in benefits for every $2 over the limit. In the calendar year you turn 67, the limit rises to $65,160 and the withholding rate drops to $1 for every $3 over. Only earnings in the months before you reach full retirement age count.7Social Security Administration. Receiving Benefits While Working
Withheld benefits are not lost. Once you hit 67, the SSA recalculates your monthly payment upward to credit you for the months benefits were withheld, and over an average lifespan you can expect to recoup the full amount.8Social Security Administration. Program Explainer – Retirement Earnings Test Starting the month you reach 67, there is no earnings limit at all.
Medicare Still Starts at 65
Full retirement age for Social Security is 67, but Medicare eligibility still begins at 65. That two-year gap means you will make health coverage decisions well before your Social Security benefit reaches its full amount.9Social Security Administration. What Is Full Retirement Age
Your initial Medicare enrollment period runs seven months: the three months before your 65th birthday, your birthday month, and the three months after. Missing that window can trigger lifetime penalties. Part B carries a standard 2026 premium of $202.90, and skipping enrollment without qualifying employer coverage adds 10% to that premium for every full 12-month period you went without Part B, for as long as you have Part B.10Medicare. Avoid Late Enrollment Penalties Part D adds 1% of the national base beneficiary premium for each full month you went without drug coverage after 63 consecutive days, and that surcharge is also permanent.11Centers for Medicare and Medicaid Services. The Part D Late Enrollment Penalty
If you are still working at 65 with employer group health coverage, you can generally delay Medicare without penalty and pick it up during a special enrollment period when that coverage ends. Marketplace plans and COBRA do not count as qualifying coverage, so the penalty clock starts at 65 whether or not you have filed for Social Security.
How Your Claim Age Affects Taxes on Benefits
Social Security is not automatically tax-free. Federal tax on your benefits depends on your combined income: adjusted gross income plus tax-exempt interest plus half of your Social Security benefits. Congress set the thresholds in the 1980s and never indexed them for inflation.
For a single filer with combined income between $25,000 and $34,000, up to 50% of benefits become taxable; above $34,000, up to 85% are taxable. For married couples filing jointly, the brackets are $32,000 to $44,000 and above $44,000.12Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits Married filing separately while living together at any point during the year gets the harshest treatment: the base amount is zero, so benefits are taxable from the first dollar.13Internal Revenue Service. Publication 915 – Social Security and Equivalent Railroad Retirement Benefits
Delaying to 70 produces a larger check, which can push more of your benefits into the taxable range. That does not erase the advantage of waiting, but it does trim the net gain. Withdrawals from traditional IRAs and 401(k) plans count toward combined income; qualified Roth withdrawals generally do not, so the order and timing of retirement account withdrawals can meaningfully change your tax bill.
What Your Claim Age Does to Spousal and Survivor Benefits
A spouse without a large earnings record of their own can claim on your record. At their own full retirement age, the spousal benefit maxes out at 50% of your primary insurance amount. If your spouse is also a 1964 birth year and claims that spousal benefit at 62 instead of 67, the reduction runs to 35%, dropping the payment to 32.5% of your primary insurance amount.14Social Security Administration. Benefits for Spouses Spousal benefits do not earn delayed retirement credits, so waiting past full retirement age to claim one adds nothing.
Survivor benefits work differently. A surviving spouse can collect reduced survivor benefits starting at 60, or at 50 with a qualifying disability, and full survivor benefits for the 1964 birth year require reaching age 67.15Social Security Administration. Survivors Benefits Because the survivor benefit is capped at what you were actually receiving, filing early lowers not only your own check but the ceiling on what your spouse could later collect.