Complete Guide to Verifying Contractor TINs Before Filing 1099 Forms

Introduction: Why TIN Verification Is Critical for 1099 Compliance

When you prepare to file 1099 forms for your contractors, one of the most important steps you can take is to verify contractor TINs before submitting anything to the IRS. A Taxpayer Identification Number (TIN) is either a Social Security Number (SSN) for individuals or an Employer Identification Number (EIN) for businesses. This number, combined with the payee's name, must exactly match IRS records for your 1099 filing to be accepted without issues.

Filing 1099s with incorrect or mismatched TINs creates serious problems. The IRS cross-references every information return against their master file of taxpayer records. When the name and TIN on your 1099 do not match what the IRS has on file, you will receive a CP2100 or CP2100A notice informing you of the discrepancy. This triggers penalties for incorrect information, requires you to solicit corrected information from the contractor, and may require you to begin backup withholding of 24% on future payments.

The good news is that the IRS provides free tools to verify contractor TINs before you file, and third-party services offer even more robust verification options. By implementing TIN verification as a standard part of your 1099 preparation process, you can avoid costly penalties, reduce administrative burden, and file with confidence that your information returns are accurate.

This comprehensive guide answers the question every business owner and payroll professional asks: how do I verify a contractor's TIN before filing their 1099? You will learn exactly how to use the IRS TIN Matching program, when to verify, what to do when verification fails, and how modern tools like BoomTax can streamline the entire process.

In this guide, you will learn:

  • What TIN verification is and why it matters for 1099 compliance
  • How to access and use the IRS TIN Matching program
  • Interactive vs. bulk TIN matching and when to use each method
  • How to interpret TIN matching results and what each code means
  • What to do when TIN verification fails and how to resolve discrepancies
  • Third-party TIN verification services and their advantages
  • Best practices for timing your TIN verification throughout the year
  • Penalties for TIN mismatches and how verification prevents them
  • How to document your verification efforts for audit protection

Understanding TIN Verification: What It Is and Why It Matters

What Is a Taxpayer Identification Number (TIN)?

Before you can effectively verify contractor TINs, you need to understand what you are verifying. A Taxpayer Identification Number is a unique identifier the IRS uses to track tax obligations and payments. There are several types of TINs:

Social Security Number (SSN)

A nine-digit number in the format XXX-XX-XXXX issued by the Social Security Administration to U.S. citizens, permanent residents, and certain temporary residents. Individual contractors who are sole proprietors typically provide their SSN on Form W-9.

Employer Identification Number (EIN)

A nine-digit number in the format XX-XXXXXXX issued by the IRS to businesses, partnerships, corporations, LLCs, estates, trusts, and other entities. Also called a Federal Tax Identification Number or FEIN. Contractors operating as business entities typically provide their EIN.

Individual Taxpayer Identification Number (ITIN)

A nine-digit number in the format 9XX-XX-XXXX issued by the IRS to individuals who need a U.S. taxpayer identification number but are not eligible for an SSN. ITINs always begin with the digit 9 and have specific digit patterns in positions 4 and 5.

Adoption Taxpayer Identification Number (ATIN)

A temporary nine-digit number issued to children in the adoption process who do not yet have an SSN. Rarely encountered in 1099 reporting but included for completeness.

Why TIN Verification Is Essential

When you file a 1099, the IRS compares the name and TIN combination against their records. This matching process identifies discrepancies that could indicate:

  • Data entry errors: Typos in the TIN or misspelled names
  • Outdated information: Name changes from marriage, divorce, or legal name changes not updated with IRS
  • Wrong TIN type: Using SSN when EIN should be used, or vice versa
  • Intentional misreporting: Contractors providing false information to evade taxes
  • Identity issues: Stolen or fraudulent TINs

The consequences of filing 1099s with incorrect TINs are significant:

Consequence Impact Estimated Cost
IRS CP2100/CP2100A Notice Notification of TIN mismatch requiring action Administrative time and effort
Penalty for incorrect information Per-form penalty for filing with wrong TIN $60 to $310 per form (2024 rates)
Backup withholding requirement Must withhold 24% from future payments Cash flow impact and administrative burden
B Notice solicitation Must request corrected TIN from contractor Time, postage, and follow-up costs
Corrected 1099 filing Must file corrected return if TIN is obtained Additional filing fees and time
Intentional disregard penalty If IRS determines willful failure $630 per form (2024) with no cap

By taking the time to verify contractor TINs before filing, you avoid all of these consequences. TIN verification is an investment of time upfront that saves significant time, money, and headaches later.

The IRS TIN Matching Program: Your Free Verification Tool

What Is IRS TIN Matching?

The IRS TIN Matching program is a free, pre-filing service that allows payers and authorized agents to verify that the name and TIN combinations on their payee records match IRS records. This program is specifically designed to help businesses verify contractor TINs before filing information returns like 1099s.

The TIN Matching program compares the name and TIN you submit against the IRS master file and returns a result code indicating whether there is a match. This allows you to identify and resolve discrepancies before filing, preventing the cascade of problems that follow from incorrect TINs.

Key Features of IRS TIN Matching:

  • Free to use: No cost for the service
  • Available 24/7: Access the system any time through IRS e-Services
  • Two methods: Interactive (immediate results) and bulk (batch processing)
  • Covers multiple TIN types: SSN, EIN, and ITIN verification
  • Pre-filing only: Designed for verification before filing, not for general TIN lookups

Who Can Use IRS TIN Matching?

The TIN Matching program is available to:

  • Payers: Businesses that file information returns (Forms 1099, W-2G, 1098, etc.)
  • Authorized agents: Third parties designated by payers to verify TINs on their behalf
  • Bulk filers: Those who submit large volumes of information returns

To access TIN Matching, you must:

  1. Have an IRS e-Services account
  2. Complete the TIN Matching application within e-Services
  3. Accept the terms of the TIN Matching program agreement

Important: TIN Matching is only for use in connection with filing information returns. It cannot be used for general taxpayer identification, credit checks, or any purpose unrelated to information return filing.

How to Register for IRS TIN Matching

Follow these steps to gain access to the IRS TIN Matching program:

Step 1: Create an IRS e-Services Account

  1. Go to the IRS e-Services portal
  2. Click "Register" to create a new account
  3. Complete the identity verification process (requires personal information and financial account verification)
  4. Create your login credentials
  5. Wait for account activation (typically within 24-48 hours)

Step 2: Apply for TIN Matching Access

  1. Log into your e-Services account
  2. Navigate to the TIN Matching application
  3. Complete the application form with your business information
  4. Certify that you will use TIN Matching only for information return purposes
  5. Accept the terms of the TIN Matching agreement

Step 3: Receive Approval

  1. The IRS reviews your application (typically approved within a few days)
  2. Once approved, TIN Matching appears in your e-Services menu
  3. You can begin verifying TINs immediately

Note: Registration and approval can take several weeks, so plan ahead. Do not wait until January when you are preparing 1099s to register for TIN Matching.

Using IRS TIN Matching: Interactive and Bulk Methods

Interactive TIN Matching

Interactive TIN Matching allows you to verify contractor TINs one at a time or in small batches with immediate results. This is ideal for:

  • Verifying new contractors when they are onboarded
  • Checking individual contractors whose TINs may be questionable
  • Resolving specific TIN discrepancies
  • Small businesses with fewer than 25 contractors to verify

How to Use Interactive TIN Matching:

  1. Log into IRS e-Services
  2. Select "TIN Matching" from the menu
  3. Choose "Interactive TIN Matching"
  4. Enter up to 25 name/TIN combinations per session
  5. Submit for matching
  6. Receive results immediately on screen

Information Required for Each Record:

  • TIN: The 9-digit SSN, EIN, or ITIN (enter digits only, no dashes)
  • Name: The first four characters of the name as it appears on the payee's tax return
  • Name Control: Automatically generated from the name you enter

Name Control Rules:

The IRS uses a "name control" for matching, which is typically the first four characters of the last name for individuals or the first four characters of the business name for entities. Understanding name control is critical for accurate matching:

Entity Type Name Control Rule Example
Individual First 4 characters of last name "John Smith" → SMIT
Sole Proprietor First 4 characters of owner's last name "Smith Consulting" (John Smith) → SMIT
Partnership First 4 characters of partnership name "ABC Partners" → ABC 
Corporation First 4 characters of corporate name "BoomTax Inc" → BOOM
LLC Depends on tax classification Single-member: owner's name; Multi-member: LLC name

Bulk TIN Matching

Bulk TIN Matching allows you to verify contractor TINs in large volumes by uploading a file of name/TIN combinations. This is ideal for:

  • Year-end verification of all contractors before filing 1099s
  • Large businesses with many contractors
  • Payroll service providers verifying TINs for multiple clients
  • Regular quarterly or annual verification processes

How to Use Bulk TIN Matching:

  1. Prepare a text file with name/TIN combinations in the required format
  2. Log into IRS e-Services
  3. Select "TIN Matching" from the menu
  4. Choose "Bulk TIN Matching"
  5. Upload your file (up to 100,000 records per file)
  6. Submit for processing
  7. Results are typically available within 24 hours
  8. Download the results file from e-Services

Bulk File Format Requirements:

The bulk TIN Matching file must be a fixed-length text file with the following format for each record:

  • Positions 1-9: TIN (9 digits, no dashes or spaces)
  • Positions 10-13: Name control (4 characters, left-justified, padded with spaces)

Example file content:

123456789SMIT
987654321JONE
456789123BOOM

Understanding TIN Matching Results

When you verify contractor TINs through the IRS program, you receive a result code for each name/TIN combination. Understanding these codes is essential for taking appropriate action:

Code Meaning Action Required
0 TIN and name combination matches IRS records None - proceed with filing
1 TIN was missing or not 9 digits Correct the TIN format and resubmit
2 TIN entered is not currently issued Contact contractor for correct TIN
3 TIN and name combination does not match Contact contractor to resolve discrepancy
4 Invalid TIN Matching request Check file format and resubmit
5 Duplicate TIN Matching request Already submitted - check previous results
6 TIN and name match (ITIN) None - proceed with filing
7 TIN and name match (EIN) None - proceed with filing
8 TIN and name match (SSN) None - proceed with filing

Codes 0, 6, 7, and 8 all indicate a successful match. The different codes simply identify the type of TIN that matched. Codes 1-5 indicate problems that need resolution before filing.

What to Do When TIN Verification Fails

Step 1: Review the Information You Submitted

Before contacting the contractor, double-check your submission for errors:

  • TIN entry: Did you enter all 9 digits correctly? Check for transposed digits.
  • Name control: Did you use the correct name? For individuals, use the last name. For businesses, use the legal entity name (not DBA).
  • Format: Did you follow the correct format requirements?
  • Source document: Does the W-9 you have on file match what you submitted?

If you find an error in your submission, correct it and resubmit for matching before contacting the contractor.

Step 2: Contact the Contractor

If the mismatch is not due to your error, you need to contact the contractor to resolve the discrepancy. Here is an effective approach:

Initial Contact Communication:

  • Explain that you are verifying information for 1099 filing
  • State that the name and TIN on their W-9 do not match IRS records
  • Request they verify the accuracy of their information
  • Ask them to provide a new W-9 if any information needs correction
  • Set a deadline for response (typically 30 days)

Common Reasons for TIN Mismatch:

  • Name change: Marriage, divorce, or legal name change not reported to Social Security Administration or IRS
  • Typo on original W-9: Contractor made an error when completing the form
  • Wrong entity type: Using personal SSN when business EIN should be used
  • Recently issued TIN: New EINs may not be in the IRS database immediately
  • Legal name vs. nickname: Using "Bob" instead of "Robert," for example

Step 3: Document Your Verification Efforts

Keep thorough records of your attempts to verify contractor TINs and resolve discrepancies. This documentation is important for several reasons:

  • Penalty protection: The IRS may waive penalties if you demonstrate reasonable cause and good faith efforts to obtain correct information
  • Backup withholding compliance: Documentation supports your compliance with B Notice and backup withholding requirements
  • Audit defense: Records prove your due diligence if questions arise

Documentation to Maintain:

  • TIN Matching results (download and save)
  • Copies of W-9s received and dates received
  • Copies of solicitation letters sent to contractors
  • Contractor responses and new W-9s received
  • Dates of all communications
  • Notes on resolution outcomes

Step 4: Handle Unresolved Mismatches

If a contractor does not respond or cannot resolve the mismatch, you have options:

Option 1: File with the Information You Have

You can file the 1099 using the best information available. If the IRS later sends a CP2100 notice, you will need to follow the B Notice procedures. Document that you made reasonable efforts to verify the TIN.

Option 2: Begin Backup Withholding

If you cannot verify the TIN after reasonable efforts, you may be required to begin backup withholding of 24% on future payments to that contractor. Backup withholding is reported on the 1099.

Option 3: Discontinue the Relationship

For contractors who refuse to provide correct information or resolve TIN issues, you may choose not to continue engaging them. A contractor's unwillingness to provide accurate tax information is a red flag.

Third-Party TIN Verification Services

Why Use Third-Party Services?

While the IRS TIN Matching program is free and effective, third-party TIN verification services offer additional benefits that can be valuable for businesses with significant 1099 filing obligations:

Advantages of Third-Party TIN Verification:

  • Real-time verification: Instant results at the point of W-9 collection, not batch processing
  • Integration with workflows: Built into W-9 collection portals or 1099 filing software
  • Enhanced checking: Additional checks beyond basic name/TIN matching
  • Death Master File: Verification against the SSA Death Master File to catch deceased individuals' SSNs
  • OFAC screening: Checks against Office of Foreign Assets Control lists
  • More detailed results: Better diagnostic information when matches fail
  • API access: Automated verification through software integration
  • No registration required: Use immediately without IRS e-Services enrollment

Types of Third-Party TIN Services

Standalone TIN Verification Services

Dedicated services that specialize in TIN verification, such as TINCorrect. These services:

  • Verify name/TIN combinations against IRS records
  • Offer web-based lookup and bulk processing
  • Provide detailed mismatch analysis
  • May include additional screening (Death Master File, OFAC)

Integrated 1099 Filing Platforms

Full-service 1099 filing solutions like BoomTax that include TIN verification as part of their offering:

  • Verify TINs during the 1099 preparation process
  • Flag mismatches before filing is submitted
  • Integrated workflow from W-9 collection through filing
  • No separate service to manage

W-9 Collection Services

Platforms focused on collecting W-9s from contractors that include TIN verification:

  • Verify TINs at the point of collection
  • Reject W-9s with invalid TINs automatically
  • Request corrections from contractors immediately
  • Ensure only verified TINs enter your system

Choosing a TIN Verification Service

When selecting a third-party service to verify contractor TINs, consider these factors:

Factor Questions to Ask Why It Matters
Data source Does the service verify against actual IRS records? Only IRS data provides authoritative matching
Speed Are results real-time or batch? Real-time enables point-of-collection verification
Integration Does it work with your existing systems? Integration reduces manual work and errors
Volume pricing What does verification cost per TIN? Costs add up with many contractors
Additional checks What beyond name/TIN matching is included? Death Master File and OFAC add value
Security How is sensitive TIN data protected? TINs are sensitive PII requiring strong security
Reporting What documentation is provided? Reports support audit defense and compliance

Best Practices for TIN Verification Timing

When to Verify Contractor TINs

Timing is critical when you verify contractor TINs. Verification at the right points prevents problems and reduces year-end stress.

At Contractor Onboarding (Best Practice)

The ideal time to verify a TIN is when you first collect the W-9. This approach:

  • Catches errors immediately when the contractor is engaged
  • Allows resolution before any payments are made
  • Gives you leverage (no payment until verified)
  • Prevents accumulation of unverified TINs

Quarterly Verification

Verify all active contractors quarterly to catch:

  • New contractors added since last verification
  • Any TINs that may have changed status
  • Issues before they accumulate

Pre-Filing Verification (November-December)

Before year-end, verify all contractors you paid $600 or more:

  • Allows time to resolve mismatches before filing deadlines
  • Ensures complete and accurate 1099s
  • Reduces January scramble

After Receiving IRS Notices

If you receive a CP2100 or CP2100A notice:

  • Verify the TINs listed immediately
  • Follow B Notice procedures
  • Resolve discrepancies within required timeframes

TIN Verification Timeline

Here is a recommended annual timeline for TIN verification activities:

Time Period Activity Purpose
Ongoing Verify new contractor TINs at onboarding Prevent unverified TINs from entering system
Q1 (April) Verify any contractors added in Q1 Quarterly cleanup
Q2 (July) Verify any contractors added in Q2 Quarterly cleanup
Q3 (October) Verify any contractors added in Q3 + begin annual review Prepare for year-end
November Complete verification of all contractors paid $600+ Allow time for resolution
December 15 Final verification deadline; resolve outstanding issues Finalize before 1099 preparation
January Verify any last-minute additions; file 1099s Meet filing deadlines

Penalties for TIN Mismatches and How Verification Prevents Them

Understanding TIN-Related Penalties

The IRS imposes significant penalties for filing information returns with incorrect TINs. Understanding these penalties emphasizes why it is critical to verify contractor TINs before filing:

Penalty for Incorrect Information (IRC Section 6721/6722)

Filing a 1099 with an incorrect TIN is considered filing with "incorrect information." Penalties for tax year 2024 (filed in 2025) are:

Correction Timing Penalty Per Form Annual Maximum
Within 30 days of due date $60 $630,500
After 30 days but by August 1 $130 $1,891,500
After August 1 or not corrected $310 $3,783,000
Intentional disregard $630 (minimum) No maximum

Failure to Furnish Correct Payee Statement (IRC Section 6722)

Providing the contractor with a 1099 copy that has an incorrect TIN also triggers penalties at the same rates as above.

Failure to Comply with Backup Withholding (IRC Section 3406)

If you should have begun backup withholding due to TIN issues but did not, you may be liable for the amount that should have been withheld plus penalties and interest.

How TIN Verification Prevents Penalties

By taking the time to verify contractor TINs before filing, you:

  • Eliminate filing errors: Verified TINs match IRS records, preventing rejection or penalty
  • Demonstrate reasonable cause: If a verified TIN later causes issues, your verification documentation shows good faith effort
  • Enable timely correction: Discovering mismatches before filing gives you time to correct them without penalty
  • Reduce B Notice volume: Fewer mismatches mean fewer CP2100 notices and B Notice obligations
  • Avoid backup withholding surprises: You know which contractors have TIN issues before they accumulate payments

The cost of TIN verification (whether using the free IRS service or a paid third-party tool) is minimal compared to potential penalties. A single $310 penalty exceeds the cost of verifying many TINs.

Frequently Asked Questions About Verifying Contractor TINs

How do I verify a contractor's TIN before filing their 1099?

You can verify contractor TINs using the free IRS TIN Matching program available through IRS e-Services. Register for an account, apply for TIN Matching access, then submit name and TIN combinations for verification. You can verify up to 25 TINs interactively with immediate results, or submit bulk files of up to 100,000 records with results within 24 hours. Third-party services also offer TIN verification with additional features like real-time checking and integration with 1099 filing software.

Is TIN matching required before filing 1099s?

TIN matching is not legally required before filing 1099s, but it is strongly recommended and considered a best practice. Filing 1099s with incorrect TINs can result in penalties of $60 to $310 per form, plus the administrative burden of responding to IRS notices and implementing backup withholding. The IRS provides free TIN matching specifically to help payers avoid these problems. Verifying TINs before filing demonstrates reasonable cause and good faith if issues arise.

What does it mean when TIN matching returns a "no match" result?

A "no match" result (code 3) means the name and TIN combination you submitted does not match IRS records. This could be due to a typo in the TIN, using the wrong name (legal name vs. DBA), a name change not reported to the IRS, using the wrong TIN type (SSN vs. EIN), or the contractor providing incorrect information. Contact the contractor to resolve the discrepancy and request a new W-9 with correct information.

How long does IRS TIN matching take?

Interactive TIN Matching provides results immediately on screen after you submit. You can verify up to 25 name/TIN combinations at a time. Bulk TIN Matching, which allows up to 100,000 records per file, typically returns results within 24 hours. You must log back into e-Services to download your results file. Plan your verification timeline to allow time for results and resolution of any mismatches before 1099 filing deadlines.

Can I verify TINs at any time of year?

Yes, the IRS TIN Matching program is available year-round, 24/7. While many businesses verify contractor TINs in November and December before year-end filing, the best practice is to verify TINs when you first collect a W-9 from a new contractor. This catches problems immediately when you have the most leverage to obtain correct information. Quarterly verification of active contractors is also recommended to prevent accumulation of unverified TINs.

What if a contractor's TIN keeps failing verification?

If a contractor's TIN repeatedly fails verification despite their providing what they claim is correct information, several scenarios are possible. The contractor may have a name change on file with the IRS that differs from what they use daily. They may be providing their business name when they should provide their legal name (or vice versa). In rare cases, the TIN may be fraudulent. Request the contractor verify their information directly with the Social Security Administration or IRS. Document all your verification attempts, as this documentation supports your compliance efforts if penalties arise.

Do I need to verify TINs for corporations?

While corporations are generally exempt from 1099-NEC and 1099-MISC reporting, there are important exceptions (payments to attorneys, medical payments, etc.). If you are filing a 1099 for any payee, including a corporation, you should verify the TIN. Additionally, verifying the W-9 information confirms the entity really is a corporation, which determines whether 1099 filing is required. Some businesses verify all vendor TINs regardless of entity type as a matter of policy.

What is the difference between IRS TIN Matching and third-party verification?

IRS TIN Matching is a free service that verifies name/TIN combinations against IRS records, available through IRS e-Services. Third-party verification services often use the same underlying IRS data but add features like real-time verification, integration with W-9 collection and 1099 filing software, additional checks (Death Master File, OFAC screening), and more detailed diagnostic information. Third-party services typically charge per verification or a subscription fee. Choose based on your volume, integration needs, and budget.

How does TIN verification work with BoomTax?

BoomTax offers integrated TIN verification as part of its 1099 filing platform. During the 1099 preparation process, BoomTax can check your contractor TINs and flag any that do not match IRS records. This integration means you do not need to separately manage IRS e-Services access or third-party verification accounts. Mismatches are identified before filing, giving you time to resolve discrepancies. BoomTax also provides extensive validation against 500+ IRS rules, catching many issues beyond just TIN mismatches.

What should I do if I already filed a 1099 with an incorrect TIN?

If you discover an incorrect TIN after filing, you should file a corrected 1099 with the correct information. Use the Type 2 correction process for TIN changes. The sooner you correct the error, the lower the potential penalty. If you correct within 30 days of the original due date, the penalty is reduced to $60 per form instead of the full $310. You should also provide the contractor with a corrected copy. Document when you discovered the error and when you corrected it for audit purposes.

How BoomTax Simplifies TIN Verification and 1099 Filing

Integrated TIN Verification

BoomTax includes TIN verification as an integrated part of the 1099 filing workflow, making it easy to verify contractor TINs without managing separate systems:

  • Pre-filing verification: Check TINs before submitting 1099s to the IRS
  • Mismatch alerts: Clear identification of TINs that need attention
  • Batch processing: Verify your entire contractor database efficiently
  • Integration with TINCorrect: Enhanced verification through our companion service

Comprehensive Data Validation

Beyond TIN verification, BoomTax validates your 1099 data against 500+ IRS rules:

  • Format checking: Ensures all fields meet IRS specifications
  • Completeness validation: Identifies missing required information
  • Logic checks: Catches errors like mismatched totals or invalid codes
  • Real-time feedback: Errors flagged immediately during data entry or import

Streamlined 1099 Workflow

BoomTax provides a complete solution from W-9 collection through 1099 filing:

  • Bulk data import: Upload contractor information from Excel or accounting software
  • One-click e-filing: Submit directly to the IRS without managing separate transmitter credentials
  • Recipient delivery: Print/mail or electronic delivery of contractor copies
  • Unlimited corrections: Fix errors without per-form charges
  • Multi-company support: Manage unlimited EINs under one account

Start Filing with Confidence

Stop worrying about TIN mismatches and IRS notices. Set up your BoomTax account and experience the peace of mind that comes from integrated verification and validation. With BoomTax, you can verify contractor TINs and file accurate 1099s efficiently, all in one platform designed for high-volume 1099 filing.

Conclusion: TIN Verification Is Essential for 1099 Compliance

The question how do I verify a contractor's TIN before filing their 1099 has a clear answer: use the free IRS TIN Matching program or a third-party verification service to confirm that name and TIN combinations match IRS records before you submit your 1099s. This simple step prevents the costly cascade of penalties, B Notices, backup withholding requirements, and correction filings that follow from incorrect TINs.

The key principles for successful TIN verification are:

  • Verify early: Check TINs when you collect W-9s, not just at year-end
  • Use available tools: The IRS TIN Matching program is free and accessible
  • Resolve discrepancies promptly: Contact contractors immediately when verification fails
  • Document everything: Keep records of verification attempts and communications
  • Integrate verification into your workflow: Make it a standard part of contractor onboarding
  • Consider third-party services: If volume or integration needs justify the cost

When you make TIN verification a routine part of your 1099 preparation process, you file with confidence. Your information returns are accurate, your compliance is protected, and you avoid the penalties and administrative burden that come from TIN mismatches.

For more information on 1099 compliance, explore our guides on collecting W-9s from contractors, TIN mismatch penalties, avoiding 1099 penalties, correcting 1099s after filing, and 1099 reporting requirements.

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