Scalable Identity & Tax Verification for Marketplaces, Retailers, and High-Volume Payee Ecosystems

Retail and eCommerce companies operate in fast-moving environments with constant vendor turnover, seasonal contractor hiring, large affiliate networks, and high-volume payouts. Manual W-9 collection, inconsistent onboarding, and disconnected systems can quickly produce inaccurate vendor data, leading to IRS 972CG penalty notices, filing rejects, and operational bottlenecks.

TINCheck helps retail and marketplace organizations automate payee verification at scale with real-time TIN validation, OFAC screening, sanctions checks, and bulk data cleansing to keep financial and tax systems accurate year-round.

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Why Higher Retail & eCommerce Choose TINCheck

Fix the #1 Source of IRS Penalties: Invalid or Missing TINs

Retailers and marketplaces often juggle thousands of W-9s, many incomplete, outdated, or inaccurate.

Automate Marketplace Seller & Affiliate Onboarding

Embed Name/TIN + sanctions checks directly into seller sign-up, affiliate onboarding, or third-party marketplace workflows.

Support Seasonal and High-Churn Workforces

Retail surges during holidays lead to massive volumes of seasonal contractor and vendor onboarding.

Clean Up Years of Legacy Vendor Data

Bulk TIN checks allows finance and AP teams to standardize inherited messy historical vendor records or redundant profiles.

Reduce Fraud and Sanctions Exposure

OFAC and sanctions screening help ensure your organizations stay away from fraudulent individuals up-front.

TINCheck Solutions Built for Retail & eCommerce

TINCheck API
Embed identity and tax verification directly into:

  • Marketplace vendor onboarding
  • Affiliate program registration
  • Dropshipper onboarding
  • Contractor and seasonal worker workflows
  • Payment and payout platforms


TINCheck Real-Time
Run fast, manual checks for edge cases, support escalations, or vendor corrections without needing engineering resources.


TINCheck Bulk
Ideal for:

  • Pre-filing season data cleansing
  • Consolidating vendor systems after acquisitions
  • Affiliate and seller database refreshes
  • Mass validation of seasonal workforce records

Frequently Asked Questions 

FAQs

Why do retail and eCommerce companies receive so many IRS 972CG penalties?

High vendor/affiliate churn and manual W-9 processes lead to inconsistent data. TINCheck verifies Name/TIN accuracy upfront to prevent invalid records from entering your systems.

Can TINCheck integrate with marketplace seller or affiliate onboarding?

Yes. The API can be embedded into registration workflows, payout workflows, or merchant onboarding portals to enforce compliance before activation.

How does TINCheck help during seasonal hiring surges?

Real-time validation ensures contractors and temporary hires are fully verified, reducing delays in payment setup and year-end reporting.

Can TINCheck help clean legacy vendor and seller data across multiple systems?

Yes. Bulk verification validates historical datasets, which is especially helpful after mergers, system migrations, or rapid marketplace expansion.

Does TINCheck screen vendors and sellers for sanctions or fraud risk?

Yes. OFAC and sanctions checks help identify restricted or high-risk entities, protecting your marketplace or retail operations.

Get in Touch with One of Our Experts