Here is the short version. If your full retirement age is 67 and you start Social Security at 62, your monthly check is reduced by about 30 percent, and the reduction is permanent. If you wait past 67, your check grows by 8 percent for each year you delay, and the growth stops at 70. Waiting the full three years means a check about 24 percent larger than your full benefit. These are fixed percentages set by law and published by the Social Security Administration. They apply to everyone born in 1960 or later, which now includes everyone just reaching 62.
What the percentages cannot do is pick your claiming age for you. That answer depends on your health, whether you are still working, what your spouse may claim, and what other income you have. This article explains the published math and the questions that bend it in one direction or the other. It is information, and it is deliberately nothing more than that. For a decision of this size, the right people to talk to are the Social Security Administration itself and, if you work with one, an adviser who can see your whole financial picture.
The arithmetic, using SSA's own example
The Social Security Administration explains the early claiming reduction with a worked example on its retirement age and benefit reduction page. Picture someone whose benefit at full retirement age would be $1,000 a month. For anyone born in 1960 or later, full retirement age is 67, so there are 60 months between age 62 and the full benefit. Claim at 62 and that $1,000 becomes $700.
The part many people miss is that the reduction accrues month by month, and it does so on a published schedule rather than in yearly jumps. Someone who claims at 63 gives up less than someone who claims at 62. Someone who claims at 66 and a half gives up only a little. Every single month you wait between 62 and your full retirement age restores a slice of the benefit. There is no cliff where waiting suddenly stops helping, and no bonus for landing exactly on a birthday.
If you were born between 1955 and 1959, your full retirement age falls between 66 and 2 months and 66 and 10 months, and the age 62 reduction is slightly smaller than 30 percent. The SSA page carries the full table by year of birth, so you can read your own row rather than working from the round numbers here.
What waiting past 67 actually buys
Delay past your full retirement age and a different mechanism takes over: delayed retirement credits. For anyone born in 1943 or later, the credit is two thirds of 1 percent for each month of delay, which compounds to 8 percent for a full year. The SSA documents this on its delayed retirement credits page, along with the detail that matters most: the increase stops at age 70. There is no reason connected to your benefit amount to wait past 70, because nothing more accrues.
Two housekeeping points from that same page are worth knowing. First, if you start benefits partway between 67 and 70, some of the credits you earned in your final year are not applied until the January after you begin collecting, so your first checks can be slightly smaller than your eventual amount. Second, delaying Social Security does not mean delaying Medicare. The SSA advises signing up for Medicare at 65 even if you plan to wait years longer for your retirement benefit, because late enrollment can make Part B and Part D cost more for good.
Why the same math points different people different ways
The SSA itself frames the tradeoff plainly: claim early and you collect for more months at a smaller amount, claim late and you collect for fewer months at a larger amount. The program is built so that neither choice is a giveaway. Which side of the tradeoff favors you depends mostly on how long you will collect, and that is a question about your health and your family history rather than about arithmetic.
A person managing a serious illness may reasonably read the table one way. A person whose parents both collected checks into their nineties may read it the other way. Neither reading is a mistake. The percentages are the same for everyone; the number of months they get multiplied by is not.
If you are still working, a second set of numbers applies
Claiming before full retirement age while still earning a paycheck triggers the earnings test, which the SSA lays out on its working while receiving benefits page. For 2026, if you are under full retirement age for the whole year, $1 is withheld from your benefits for every $2 you earn above $24,480. In the calendar year you reach full retirement age, the rules soften: $1 is withheld for every $3 you earn above $65,160, and only earnings in the months before your birthday month count.
Two things about the earnings test surprise almost everyone. The withheld money is not simply gone: once you reach full retirement age, the SSA recalculates your benefit to give you credit for the months it withheld. And starting with the month you reach full retirement age, the test disappears entirely. You can earn any amount and keep every dollar of your benefit. Wages and self employment profit count toward the limits; pensions, investment income, interest, and veterans benefits do not.
What a spouse changes
Claiming age also shapes what a husband or wife can receive on your record. A spousal benefit tops out at half of the worker's full retirement age amount, and it carries its own early claiming reduction. In the SSA's example, a $500 spousal benefit claimed at 62 shrinks to $325, a 35 percent cut, which is steeper than the reduction on a worker's own benefit. Couples are really making two claiming decisions that interact, and the combination that maximizes one check does not always maximize the household. This is exactly the kind of question worth putting to the SSA directly, with both records in front of them.
What this can't tell you
The published percentages settle less than they seem to. They say nothing about whether your benefits will be taxed, which depends on your other income. They say nothing about pensions from work that did not pay into Social Security, which can change the benefit itself. They cannot weigh what it does to your savings to bridge five years without a check, or what it means for a surviving spouse decades from now, or how it feels to keep working at a job your body is done with. Any of those can outweigh a tidy 8 percent credit. A calculator cannot see them, and neither can this article.
Where to run your own numbers
Start with a my Social Security account at ssa.gov, which shows your actual earnings record and personalized estimates at 62, 67, and 70 rather than the $1,000 illustration used here. The three pages linked above carry the reduction table, the credit schedule, and the current earnings limits, and they are updated when the dollar figures change each year. If your situation includes a spouse, a pension, or a business, consider an appointment with the SSA and a conversation with a qualified financial or tax professional before you file. The claiming decision is one of the few in retirement that mostly cannot be undone, which is a good reason to spend an unhurried month on it rather than an afternoon.
