Retirement Social Security

The 1 Thing All Retirees Must Do Before Claiming Social Security Benefits in 2026

This decision can have a big impact on your benefits.

By Lee Huffman

Edited by Laura Hohenstein

Updated March 5, 2026

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Claiming Social Security is one of the most permanent financial decisions you will make in retirement. Once you file, your monthly benefit is largely locked in for life and could lead to one of the most surprising retirement mistakes. Even small timing mistakes can reduce your income for decades. Before you claim Social Security benefits in 2026, you need to understand your full retirement age and how your benefits change if you claim early or delay filing.

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The one step that matters most: know your full retirement age

Your full retirement age (FRA) is the age at which you qualify for 100% of your earned Social Security benefit. However, it is not the same for everyone because it depends on the year you were born.

According to the Social Security Administration (SSA), full retirement age ranges from 66 to 67 for current retirees and near-retirees. For anyone born in 1960 or later, FRA is 67.

This age matters more than most retirees realize because Social Security uses it as the benchmark to calculate reductions and increases to your benefit.

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Why your full retirement age affects your benefit for life

If you claim benefits before your FRA, your monthly payment is permanently reduced. If you claim after your FRA, your benefit increases through delayed retirement credits until age 70.

The SSA explains that claiming at age 62 can reduce your benefit by as much as 30%, depending on your FRA. That reduction does not disappear when you reach full retirement age. It continues for the rest of your life, and you'll need to make up for that lost income by saving more, taking on higher risk in your portfolio, or working part-time in retirement.

On the other hand, if you delay benefits past FRA, your benefit grows by about 8% per year until age 70 due to delayed retirement credits. That extra money reduces your need to find other sources of income to cover your monthly expenses.

Understanding your FRA allows you to measure every claiming option against the correct baseline. Without it, you are making a permanent decision without knowing the full consequences.

How Social Security calculates your benefit

Your monthly benefit is not random. It is based on a formula applied to your lifetime earnings.

In simple terms, here is how it works:

Social Security looks at your 35 highest-earning years.
Those earnings are adjusted for inflation.
The agency calculates your average indexed monthly earnings (AIME).
A formula is applied to determine your primary insurance amount (PIA).
Your PIA is the amount you receive at full retirement age.

Your FRA is directly tied to your PIA. If you claim at FRA, you receive 100% of your PIA. If you claim early, your PIA is reduced. If you delay, your PIA is increased through credits.

Skipping this step means you may not fully grasp how much of your PIA you are giving up or gaining.

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What can go wrong if you skip this step

Many middle-class retirees assume that filing for Social Security at 62 or 63 is "close enough" to full retirement age. While a few years may not seem like much, claiming early can have a dramatic impact on your retirement plan.

Consider a retiree whose benefit at FRA (67) would be $2,000 per month. If that person files at 62, the benefit could drop to roughly $1,400 per month. That is a $600 monthly difference that ends up costing you $7,200 per year. Over 20 years of retirement, you'll receive $144,000 less in lifetime income. The number is even higher when factoring in annual cost-of-living adjustments.

Survivor benefits are based on the benefit amount you lock in. A permanently reduced benefit can also mean a permanently reduced payment for a surviving spouse.

Government tools to confirm your numbers

Before claiming in 2026, review your official Social Security statement through your my Social Security account.

There, you can see:

Your estimated benefit at 62
Your estimated benefit at full retirement age
Your estimated benefit at 70

Comparing those numbers side by side using your actual full retirement age can prevent costly surprises. Depending on how much you'll lose out on, you may reconsider when you'll claim Social Security benefits. Working part-time, relying on savings and investments, or cutting monthly expenses could allow you to retire early while still allowing Social Security benefits to grow.

Bottom line

Before you claim Social Security benefits in 2026, make sure you understand your full retirement age. That single step determines whether you receive 100% of your earned benefit, accept a permanent reduction, or qualify for an increase. Even a few years' difference can change your lifetime income by tens of thousands of dollars. Social Security is too important to your retirement plan to approach casually. Knowing your FRA helps you make a more confident and informed claiming decision.

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