OASDI is the Social Security program that FICA taxes fund

OASDI stands for Old-Age, Survivors, and Disability Insurance. It is the formal name for Social Security — the federal program that pays monthly benefits to retired workers, disabled workers, and the surviving family members of workers who have died. When you see FICA taxes taken from your paycheck, a portion of that money goes directly into the OASDI trust fund.

OASDI is one of two programs FICA taxes support. The other is Medicare (specifically the Hospital Insurance part, also called Part A). Understanding what OASDI covers helps explain why FICA appears on your pay stub and what happens to that money.

The program has been in place since 1935 and operates as a pay-as-you-go system: current workers' FICA taxes pay benefits to current retirees and disabled beneficiaries. When you retire or become disabled, future workers' FICA taxes will help pay your benefits.

Key Takeaways

  • OASDI is the official name for Social Security, which pays retirement, disability, and survivor benefits to may be able to access workers and their families.
  • FICA taxes are split between OASDI (Social Security) and Medicare, with the OASDI portion funding retirement and disability payments.
  • You earn OASDI credits by working and paying FICA taxes, and you need 40 credits to be covered by the program.
  • OASDI benefits depend on your age when you claim, your earnings history, and whether you are retired, disabled, or a survivor of a covered worker.

The three types of OASDI benefits

Retirement benefits are monthly payments to workers who have reached their full retirement age or chosen to claim early. Full retirement age ranges from 66 to 67 depending on your birth year. You can claim as early as age 62, but your monthly payment will be permanently reduced. If you delay claiming past your full retirement age, your monthly payment increases until age 70.

Disability benefits go to workers under full retirement age who have a medical condition expected to last at least 12 months or result in death, and who have paid enough FICA taxes to be covered. The Social Security Administration (SSA) reviews medical evidence to determine disability. Family members of a disabled worker — including a spouse and children — may also receive benefits based on that worker's earnings record.

Survivor benefits are paid to the family members of a worker who has died, if that worker had paid enough FICA taxes. A widow or widower can claim at age 60 (or at any age if caring for a child under 16). Children of the deceased worker can claim until age 19 if still in high school, or up to age 16 if not in school. A parent of the deceased worker can claim if the worker was supporting them at the time of death.

How FICA taxes fund OASDI

FICA taxes are split between two programs. For 2024, the OASDI portion is 6.2 percent of your gross wages (up to a maximum earnings cap that changes yearly). Your employer pays a matching 6.2 percent. If you are self-employed, you pay both portions — 12.4 percent total — though you can deduct half of this on your tax return.

The earnings cap means that once you earn above a certain amount in a year, additional earnings are not subject to OASDI tax. This cap changes each year based on wage growth. For example, in 2024 the cap was $168,600, meaning earnings above that amount do not generate additional OASDI tax or credits. Medicare (the other FICA program) has no earnings cap.

The money you and your employer pay does not go into a personal account with your name on it. Instead, it goes into the OASDI trust fund, which the SSA uses to pay current beneficiaries. Your FICA contributions establish your right to future benefits based on your earnings record and the number of credits you have earned.

OASDI credits and coverage

To receive OASDI benefits, you must have earned enough credits through FICA-covered work. In 2024, you earn one credit for each $1,632 of wages you earn (this amount changes yearly). You can earn a maximum of four credits per year. Most people need 40 credits total to be covered by OASDI — that is roughly 10 years of full-time work.

Younger workers have different requirements for disability and survivor benefits. A worker who becomes disabled before age 24 may need only six credits (earned in the three years before disability). A worker who dies at any age may provide survivor benefits to their family if they had earned enough credits at the time of death, even if they had not yet reached retirement age.

Your earnings record — the history of wages you reported to the SSA through FICA taxes — determines how much your monthly benefit will be. The SSA calculates your benefit based on your 35 highest-earning years. If you have fewer than 35 years of earnings, zeros are counted for the missing years, which lowers your average and your benefit amount.

How OASDI differs from other retirement savings

OASDI is a government insurance program, not a savings account or investment. You do not choose how your FICA taxes are invested, and you cannot withdraw your contributions early or pass unused benefits to your heirs. The amount you receive in benefits is not directly tied to the amount you paid in taxes — it is based on a formula that weighs your earnings history and the age at which you claim.

Unlike a 401(k) or IRA, OASDI provides benefits even if you become disabled before retirement age, and it provides payments to your family members if you die. It also includes a cost-of-living adjustment (COLA) that increases benefits yearly to account for inflation. These features make OASDI function as insurance rather than as a personal retirement savings vehicle.

Many people use OASDI as one part of a broader retirement plan that may also include employer pensions, 401(k)s, IRAs, and personal savings. Understanding what OASDI will pay you helps you decide how much additional retirement savings you need to accumulate.

When OASDI payments begin

You must contact the SSA to claim OASDI benefits. You cannot automatically receive them once you reach retirement age. You can claim retirement benefits as early as age 62, though your monthly payment will be about 30 percent lower than if you waited until full retirement age. If you delay claiming until age 70, your monthly payment will be about 24 to 32 percent higher than at full retirement age (the exact increase depends on your birth year).

For disability benefits, the SSA determines when your benefits begin based on the date your condition started and when you file your claim. There is typically a five-month waiting period after your condition begins before disability payments start. Survivor benefits begin the month after the worker's death, though family members must file a claim to receive them.

The SSA processes claims through its website, by phone, or in person at a local Social Security office. Processing times vary, but it is common for retirement claims to take several weeks to several months. Disability claims typically take longer because the SSA must review medical evidence.

Frequently Asked Questions

Can I receive OASDI benefits if I did not work in the United States?

You must have earned OASDI credits through U.S. FICA-covered work to receive benefits. However, if you worked in another country that has a social security agreement with the United States, some of your foreign work credits may count toward the 40 credits needed. The SSA maintains agreements with about 30 countries. You would need to contact the SSA directly to learn whether your country has an agreement and how your credits would be counted.

What happens to my OASDI benefits if I continue working after I claim?

If you claim retirement benefits before your full retirement age and continue working, your benefits may be reduced if your earnings exceed a certain limit. For 2024, benefits are reduced by $1 for every $2 earned above $23,400 (this limit changes yearly). Once you reach full retirement age, there is no earnings limit and your benefits will not be reduced, no matter how much you earn.

Do I pay FICA taxes on OASDI benefits I receive?

OASDI benefits themselves are not subject to FICA tax. However, a portion of your OASDI benefits may be subject to federal income tax if your total income exceeds certain thresholds. The amount depends on your filing status and other income sources. State income tax treatment of OASDI benefits varies by state.

Can I change my mind after I claim OASDI retirement benefits?

You can withdraw your claim within 12 months of claiming and repay all benefits received, which restores your right to claim again at a later age. After 12 months, you cannot withdraw your claim, but you can request a voluntary suspension of benefits after you reach full retirement age, which allows your benefit amount to grow until you restart benefits later.