You receive your paycheck, scan the deductions, and see money going to something called OASDI. You may wonder, what is OASDI tax? It sounds technical, but it’s one of the most common payroll taxes in the United States. OASDI tax is the Social Security portion of FICA, and it helps fund retirement, survivor, and disability benefits.
If you have ever searched “oasdi tax meaning,” “what is oasdi on my paycheck,” “fed oasdi/ee meaning,” or “oasdi on paycheck,” they all usually refer to the same thing: the Social Security tax withheld from your earnings. On many pay stubs, FED means federal, OASDI refers to Social Security, and EE means the employee portion being deducted from your paycheck.
In 2026, the most important things to know are the 6.2% employee rate, the $184,500 wage base limit, and the situations where workers may overpay or qualify for rare exemptions.
Interactive Tool: The 2026 Paycheck & OASDI Calculator
To estimate your OASDI tax, use this formula:
OASDI tax = taxable wages up to $184,500 × 6.2%
If you earn $50,000, your employee OASDI tax is $3,100.
If you earn $100,000, your employee OASDI tax is $6,200.
If you earn $184,500 or more, your maximum employee OASDI tax for 2026 is $11,439. The SSA confirms that employees and employers each contribute up to $11,439 in 2026 when wages reach or exceed the taxable maximum.
2026 Paycheck & OASDI Calculator
Use this calculator to estimate 2026 employee OASDI tax, also known as the Social Security payroll tax. OASDI applies at 6.2% on taxable wages up to the 2026 wage base of $184,500.
Taxable OASDI Wages = The lesser of Annual Wages or $184,500
Employee OASDI Tax = Taxable OASDI Wages × 6.2%
Maximum Employee OASDI Tax for 2026 = $184,500 × 6.2% = $11,439
Estimated OASDI per Paycheck = Remaining OASDI Tax ÷ Remaining Paychecks
Note: This calculator estimates employee OASDI only. It does not include Medicare tax, Additional Medicare Tax, federal income tax withholding, state tax, local tax, pre-tax deductions, employer payroll tax, or self-employment tax.
Decoding Your Paycheck: What Is FED OASDI/EE?
- FED Means Federal: On a paystub, FED usually means the deduction is connected to federal payroll tax. It isn’t a state tax, local tax, or private benefit charge.
- OASDI Means Social Security: OASDI is the formal government name for Social Security. It funds benefits for retired workers, eligible survivors, and people with qualifying disabilities.
- EE Means Employee Portion: The “EE” code usually means employee. So FED OASDI/EE means the employee portion of federal Social Security tax withheld from your paycheck.
- OASDI Is Part of FICA: FICA includes Social Security tax and Medicare tax. OASDI is the Social Security part. Medicare is separate, and unlike Social Security, Medicare tax has no wage base cap.
The 2026 OASDI Tax Rates: Who Pays What?
- W-2 Employees Pay 6.2%: If you are a W-2 employee, your employer withholds 6.2% of your covered wages for OASDI until you reach the annual wage base limit.
- Employers Match Another 6.2%: Your employer pays an equal 6.2% on your behalf. You usually don’t see this employer match deducted from your paycheck, but it’s still part of total payroll tax cost.
- Self-Employed Workers Pay 12.4%: If you are self-employed, you generally pay both the employee and employer sides through self-employment tax. That means the Social Security portion is 12.4% up to the wage base.
- Medicare Is Separate: Medicare tax isn’t the same as OASDI. It’s another part of FICA, and it applies to all covered wages without the Social Security wage cap.
2026 OASDI Tax Limit: Income Caps Explained
The 2026 OASDI wage base is $184,500, which means Social Security tax only applies to covered wages up to that amount. Once your earnings pass the limit, your employer should stop withholding the 6.2% OASDI tax for the rest of the year. Because of this, high earners may notice their take-home pay increase later in the year even though their salary stays the same. For 2026, the maximum employee OASDI tax is $11,439, calculated as $184,500 × 6.2%. However, Medicare tax continues even after Social Security withholding stops because Medicare has no wage limit. Some high earners may also owe additional Medicare tax depending on their total income.
OASDI Tax Refund: What If You Overpay?
Overpayment Can Happen with Two Jobs
If you work for two employers, each employer withholds OASDI tax as if that job is your only income. If your combined wages exceed the 2026 wage base of $184,500, you may overpay Social Security tax during the year. In most cases, the extra amount can be claimed back as a credit or refund when you file your federal tax return.
This usually happens because employers do not coordinate payroll withholding with each other. For high earners with multiple jobs, the overpayment can add up quickly. Checking your W-2 forms carefully at tax time can help you spot whether too much OASDI tax was withheld.
You Can Usually Claim the Excess
If too much OASDI was withheld because of multiple employers, the excess is generally claimed as a credit when you file your federal tax return. This is one reason high earners with multiple jobs should review their W-2 forms carefully. Comparing total wages and Social Security withholding across all jobs can help identify overpayments before filing taxes.
The IRS typically allows the excess amount to reduce your tax bill or increase your refund. Keeping accurate payroll records throughout the year can also make tax filing easier and help prevent reporting mistakes.
One Employer Should Stop Automatically
If overwithholding happens with one employer, ask payroll to correct it. A single employer is supposed to stop OASDI withholding once your wages with that employer exceed the annual limit. If the mistake is not fixed during the year, you may need to request a refund directly from the employer instead of claiming it on your tax return. Reviewing your pay stubs regularly can help catch withholding errors before they become a larger payroll issue.
Is OASDI Tax Mandatory?
For most U.S. employees, OASDI tax is mandatory. It isn’t an optional deduction, and employees generally can’t opt out simply because they prefer to save for retirement through other methods. However, certain state and local government employees may be exempt if they are covered by alternative retirement systems instead of Social Security, depending on the employer and retirement plan structure.
In addition, some members of recognized religious groups may qualify for exemptions if they meet strict legal requirements. Certain nonresident aliens on specific visa types, as well as some students working for the school where they are enrolled, may also be exempt from OASDI tax in limited situations.
How OASDI Affects Future Social Security Benefits
OASDI isn’t just a paycheck deduction. It helps fund the Social Security system that pays retirement, survivor, and disability benefits. Your covered earnings also matter for your future Social Security record. That doesn’t mean every dollar withheld comes back directly to you. Social Security is a social insurance program, not a private savings account. Still, accurate wage reporting matters because your benefit calculation depends partly on your covered earnings history.
Final Thoughts
OASDI tax is simply the Social Security tax on your paycheck. In 2026, employees pay 6.2% up to the $184,500 wage base, employers match it, and self-employed workers generally pay 12.4%. If you see FED OASDI/EE on your paystub, it usually means your employee share of federal Social Security tax.
The smartest move is to check three things: your year-to-date OASDI withholding, whether your income may exceed the wage base, and whether multiple jobs could cause overpayment. OASDI may feel like just another deduction, but understanding it helps you read your paycheck with far more confidence.
