What is oasi number

Last updated: April 1, 2026

Quick Answer: OASI stands for Old Age, Survivors, and Disability Insurance, a component of the U.S. Social Security program that provides benefits to retired workers, disabled individuals, and surviving family members.

Key Facts

Understanding OASI

OASI, which stands for Old Age, Survivors, and Disability Insurance, is a federal insurance program established in 1935 as part of the Social Security Act. It provides financial protection to American workers and their families when the worker retires, becomes disabled, or passes away. The program is administered by the Social Security Administration.

How OASI Works

OASI is funded through Federal Insurance Contributions Act (FICA) taxes, which are withheld from employee paychecks and matched by employers. These payroll taxes go into a trust fund that pays benefits to eligible recipients. Workers earn credits toward OASI benefits through covered employment, with most people needing 40 credits (approximately 10 years of work) to qualify for retirement benefits.

Types of Benefits

OASI provides several types of benefits:

Benefit Calculation

Your OASI benefit amount is calculated based on your highest 35 years of earnings and the age at which you claim benefits. Claiming at full retirement age provides your primary insurance amount, while claiming earlier (age 62) results in permanently reduced benefits, and delaying until age 70 increases your benefits.

Related Questions

What is the difference between OASI and SSDI?

OASI (Old Age, Survivors Insurance) provides benefits for retirement and survivor benefits, while SSDI (Social Security Disability Insurance) specifically provides benefits for disabled workers and their families. Both are Social Security programs with different eligibility criteria.

Can you receive OASI benefits while still working?

Yes, you can work and receive OASI benefits, but if you're under full retirement age and earn above a certain limit, your benefits may be reduced. In 2024, benefits are reduced $1 for every $2 earned above $23,400 annually.

How do I apply for OASI benefits?

You can apply online at ssa.gov, by phone at 1-800-772-1213, or visit your local Social Security office. You should apply three months before you want benefits to start to avoid delays in processing.

Sources

  1. Social Security Administration - Retirement BenefitsPublic Domain
  2. Wikipedia - Social Security (United States)CC-BY-SA-4.0