How to Determine a Valid Social Security Number (2024)

File W-2c and W-3c forms. Amend employee tax returns. Phone legal council. Investigate tax evasion and identity theft.

These are just some of the steps you must take when employees use fake social security numbers (SNNs).

While none of those actions sound pleasant, the kicker is that they also happen at a very busy time of year: when you’re running year-end payroll.

It’s therefore crucial to verify your employees’ SSNs during the hiring process (or throughout the year) to ensure you’re not adding extra stress and work to your plate.

How Social Security Numbers are Issued

The Social Security Administration (SSA) began assigning the nine-digit SSN in 1936 to track peoples’ earnings over their lifetimes and pay benefits.

The SSN has always comprised of a three-digit area number, a two-digit group number, and ending with a four-digit serial number. Since 1972, the SSA has issued Social Security cards centrally, and the area number reflects the state, determined by the ZIP code in the mailing address of the application.

Because that had limitations (and, let’s be honest, security issues), the SSA changed how it issued numbers in June 2011. The change is referred to as randomization, and its goal is to help protect the integrity of the SSN. This new randomization change affected the assignment process by eliminating the geographical significance and importance of the highest group number.

What an Invalid SSN Looks Like

An invalid SSN is one that the SSA never assigned. A valid SSN will never look like this:

  • The first three digits are “000,” “666,” or in the 900 series.
  • The second group consists of “00” as the two digits.
  • The third group consists of “0000’ as the four digits.

3 Tips to Ensure SSN Accuracy

For some background, businesses must send Copy A of Form W-2 to the SSA. The SSA then matches the employee’s name and SSN against its database. Once matched, the earnings information from the W-2 is recorded with the employee’s earnings history.

If the names and numbers don’t match …well, you can just imagine the headache for the employer and employee. Below are three tips to catch any errors or unauthorized numbers to help ensure a seamless filing process.

1. Verify Names

You’d think verifying names would be simple, but you’d be surprised how many misspellings, nicknames, and unnecessary titles end up on W-2 filings. If you’re manually filling out forms, enter the name on the W-2 as shown precisely on the employee’s Social Security card.

If you want to reduce the HR lift, mandate that employees verify their names and SSNs before you close out your books to prepare W-2s.

Note: If an employee changes their name mid-year, continue to use their old name and have them contact SSA to update their card. Using the new name before the employee updates his or her records may prevent the SSA from posting earnings to the employee’s earnings history.

How to Determine a Valid Social Security Number (1)

Employees can verify their own tax information through a self-service portal, which will improve the efficiency of tax preparation and filing.

2. Use Online Resources

There are a few options to verify Social Security numbers for wage reporting purposes.

  • The Social Security Number Verification Service is a free online service that allows registered users to verify that the names and SSNs of hired employees match Social Security’s records.
  • The Consent-Based Social Security Number Verification Service isavailable to enrolled private companies and state and local agencies for a fee and provides instant automated verification. It can also handle large volume requests.
  • E-Verify is a free online system operated by the Department of Homeland Security in partnership with the SSA. It allows employers to electronically verify that their new hires are authorized to work in the U.S. by comparing details on Form I-9 with Federal government databases. (Unlike the first two, this process validates that your new hire is legally eligible to work in the U.S.)

3. Look to Your Payroll Software

Your payroll software provider may automatically verify employee SSNs – either during onboarding, before filing season, or both. By cross-referencing employee information with official databases, payroll software helps organizations maintain compliance with regulations, reduce errors in payroll processing, and prevent fraudulent activity … all without the employer lifting a finger.

Spot Invalid SSNs to Maintain Compliance

As a final note, it’s crucial to remember that accurate SSNs are important not only for year-end processes but also for maintaining compliance and safeguarding sensitive information within your organization.

Conduct regular audits and thorough documentation practices to reinforce compliance efforts and promptly identify and address any issues related to invalid or fraudulent SSNs. Ultimately, doing so will protect your organization against potential liabilities and uphold the integrity of its data management practices.

How to Determine a Valid Social Security Number (2024)

FAQs

How to Determine a Valid Social Security Number? ›

Use Online Resources. There are a few options to verify Social Security numbers for wage reporting purposes. The Social Security Number Verification Service is a free online service that allows registered users to verify that the names and SSNs of hired employees match Social Security's records.

How to verify if a Social Security number is valid? ›

SSNVS allows you to submit names and Social Security Numbers (SSNs) for verification both online and through electronic file submission. The SSN Verification web page enables you to submit up to 10 names and SSNs for verification and obtain immediate results.

What are 4 ways to verify your Social Security number? ›

Documents you can use include:
  • U.S. ...
  • DD214 with full SSN.
  • NGB 22 with full SSN.
  • W-2 Form with full SSN (including W-2C, W-2G, etc.)
  • SSA-1099 Form with full SSN (including SSA-1099-SM, SSA-1099-R-OP1, etc.)
  • Non-SSA 1099 Form with full SSN (including 1099-DIV, 1099-MISC, etc.)
  • 1098 Form with full SSN (including 1098-C, etc.)

What is the validation rule for Social Security number? ›

United States Social Security numbers are nine-digit numbers in the format AAA-GG-SSSS : The first three digits were historically (prior to mid-2011) assigned by geographical region, and are thus called the area number. The area number cannot be 000, 666, or between 900 and 999.

What is the regex pattern for a valid SSN? ›

The SSN Regex Pattern

The regex pattern for a standard U.S. SSN is: ^\\d{3}-\\d{2}-\\d{4}$ This pattern ensures that the SSN consists of three digits, followed by a hyphen, two digits, another hyphen, and four digits.

How do I know if my Social Security number is invalid? ›

No valid SSN has 9 identical digits or has the 9 digits running consecutively from 1-9. For example, all of the following SSNs are invalid: 111-11-1111. 999-99-9999.

How can I check if my SSN is being used? ›

Identity Theft: If you think an identity thief is using your SSN to work or to collect benefits, call the Social Security Fraud Hotline at 1-800-269-0271. If you think someone may be using your SSN to work, check your Social Security Personal Earnings and Benefit Statement.

How to spot a fake SSN number? ›

An invalid SSN is one that the SSA never assigned. A valid SSN will never look like this: The first three digits are “000,” “666,” or in the 900 series. The second group consists of “00” as the two digits.

What determines the first 3 numbers of SSN? ›

Were you aware that the first three digits of the Social Security Number (SSN) had a geographical significance? Since the inception of SSNs, the first three digits were determined by the Zip Code of the mailing address shown on the application for an SSN -- but this is slated to change in 2011.

What does SSN validation mean? ›

Social Security Number (SSN) verification is the process of validating a person's SSN to confirm that they are who they say they are. This 9-digit number serves as a unique identifier for individuals within the United States, primarily used for tracking earnings and benefits.

What is an example of a valid SSN? ›

Structure. The Social Security number is a nine-digit number in the format "AAA-GG-SSSS". The number has three parts: the first three digits, called the area number because they were formerly assigned by geographical region; the middle two digits, the group number; and the last four digits, the serial number.

What is the correct format of Social Security number? ›

The nine-digit SSN is composed of three parts: The first set of three digits is called the Area Number. The second set of two digits is called the Group Number. The final set of four digits is the Serial Number.

What is the invalid format for SSN? ›

Social Security Numbers having the following characteristics are invalid or impossible: AREA, GROUP, or SERIAL are composed of all zeroes (e.g, 000-45-6789, 123-00-6789, 123-45-0000) AREA number 666 (never have and never will be issued) AREA numbers 700 to 728 (Railroad workers through July 1, 1963, then discontinued)

How to verify sss number online? ›

How to Verify Your SSS Number Online?
  1. Visit the official SSS website at www.sss.gov.ph.
  2. Look for the “Online Services” section and select “SSS Number Verification.”
  3. Provide the required personal information, including your full name, date of birth, and other identifying details.

Can I check my SSN status online? ›

my Social Security account. On the My Home page scroll down to the Your Benefit Applications section and select View Details under the More Info heading. View your application status in the Current Status section. Check the status of your Social Security application online today!

How to E-Verify Social Security Number? ›

Step 1 - Login to myE-Verify. Step 2 – Select Self Check from dropdown or click “Verify with Self Check”. Step 3 - Confirm or edit your personal identity information. Step 4 – Select current citizenship or immigration status.

Can you look up who a Social Security Number belongs to? ›

You'll notice that you're only able to get the user's full name if they're deceased. This is a cautionary detail to make sure you're not able to steal someone's identity just by looking up their Social Security Number. However, you can use an SSN reverse lookup to verify someone's information.

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