TINCorrect vs. TINComply

Two Models for TIN Verification

TINCorrect and TINComply both help you verify TINs before filing information returns, reducing IRS penalties and backup withholding risk. The fundamental difference is in how they deliver that verification: TINCorrect is a focused self-service tool, while TINComply is a broader compliance platform with optional managed services.

TINCorrect, part of the BoomTax ecosystem, is built for teams that want to handle TIN verification directly. Upload your file, get your results, act on mismatches. Real-time single lookups return results in seconds. Bulk batches handle up to 100,000 records. The REST API with JWT authentication and Swagger docs makes integration straightforward. Credit-based pricing starts with 10 free searches, no credit card required.

TINComply offers TIN matching as part of a wider compliance suite that includes W-9 lifecycle management, OFAC screening against 250+ sanctions lists, EIN discovery, address validation, GIIN verification, and LEI lookups. It also offers managed compliance services, where TINComply's team handles verification work on your behalf. This makes it a different kind of product: less of a tool, more of a compliance partner.

Why Businesses Choose TINCorrect

TINCorrect appeals to teams that want direct control over their TIN verification workflow without the complexity of a broader platform. Here is what makes it work:

Where TINComply Differs

TINComply's standout differentiator is its integrated W-9 lifecycle management. If your organization collects, stores, and tracks W-9 forms from hundreds or thousands of vendors, TINComply handles the collection, expiration tracking, and re-solicitation process alongside TIN verification. For more on W-9 workflows, see our W-9 Collection Guide.

TINComply also offers managed compliance services, where their team handles the verification work on your behalf. This is a fundamentally different service model. Instead of running verifications yourself, you hand the work to TINComply and receive results. This can make sense for organizations that lack in-house compliance staff or prefer to outsource the function entirely.

Beyond TIN matching, TINComply provides EIN discovery, OFAC screening against 250+ sanctions lists, address validation, GIIN verification, and LEI lookups. It also offers five free browser-based compliance tools for quick, ad-hoc checks. The platform holds ISO 27001, SOC 2 & 3, and PCI DSS certifications.

Side-by-Side: What Matters

Which Service Fits Your Situation?

If you handle W-9s through your existing systems

Most businesses already manage W-9 collection through their ERP, AP system, or a dedicated workflow. If that process works for you and your primary gap is TIN verification, TINCorrect fills that gap cleanly. It focuses on the verification step and does it well, without duplicating W-9 management you already have in place.

If you need W-9 lifecycle management bundled with verification

TINComply's integrated W-9 management is its standout feature. If you are looking for a single tool to handle W-9 collection, storage, expiration tracking, re-solicitation, and TIN verification, TINComply bundles all of that together.

If you want full control over your verification workflow

TINCorrect is built for self-service teams. Upload a file or call the API, get results, and act on them. The clean interface and well-documented API make it easy to integrate into your existing process. See our TIN Matching API Guide for integration patterns.

If you would rather outsource compliance verification

TINComply's managed services option lets you hand off the verification work entirely. Their team handles the process and delivers results. This is a different service model that may appeal to organizations without dedicated compliance staff.

If you want to try before you commit

TINCorrect gives you 10 free searches on signup, no credit card required. Run real verifications and evaluate the experience before spending anything. TINComply offers five free browser-based tools for ad-hoc checks, though full API access requires an account.

How TINCorrect Works

TINCorrect keeps the TIN verification process simple:

Further Reading

• 5 Best TIN Matching Services Compared for 2026 — Full roundup with all major providers.
• TIN Matching: The Complete Guide — How the IRS TIN Matching Program works.
• W-9 Collection Guide — Best practices for collecting and managing W-9 forms.
• Vendor Compliance Guide — The full vendor tax compliance workflow.
• Compare Hub — Return to all head-to-head comparisons.

Author

Ken Ham

Founder at TINCorrect

Passionate about making tax identity verification simple so businesses can focus on what matters.