TINCorrect vs. TINCheck

What Each Service Does Best

TINCorrect and TINCheck both verify Taxpayer Identification Numbers against IRS records, but they are designed for different situations. Understanding what each service prioritizes will help you make the right choice for your organization.

TINCorrect is purpose-built for IRS TIN/name matching. Built by the team behind BoomTax, it focuses on doing one thing exceptionally well: confirming that TINs match IRS records before you file information returns. You get real-time single lookups, bulk uploads of up to 100,000 records per batch, and a modern REST API with JWT authentication and Swagger documentation. New accounts start with 10 free searches and no credit card required, so you can evaluate the service before spending anything.

TINCheck, owned by Sovos, takes a broader approach to compliance verification. Each request runs against more than 40 databases, combining IRS matching with additional screening. TINCheck is designed for enterprises that need comprehensive regulatory checks bundled into a single verification call. The service also maintains a proprietary cache of over 20 million records, which can provide results when the IRS system is temporarily unavailable.

Why Businesses Choose TINCorrect

For businesses whose primary compliance need is verifying TINs before filing 1099s, TINCorrect delivers exactly what you need without the overhead of features you will never use. Here is what makes it stand out:

Where TINCheck Differs

TINCheck serves a different audience with different requirements. If your compliance obligations extend beyond IRS TIN matching into regulatory screening, TINCheck bundles broader coverage into each verification request.

TINCheck also offers a proprietary cache of over 20 million records, which means verifications can proceed even during IRS system downtime. The service provides both REST and SOAP APIs, which may matter for organizations with legacy systems that require SOAP/XML integration. TINCheck is backed by Sovos, a large compliance technology company, and holds enterprise-grade certifications including SOC 1 & 2, ISO 27001, and PCI DSS.

For organizations that need broader screening capabilities alongside TIN matching, TINCheck consolidates multiple checks into a single per-verification call. This is particularly relevant for financial services firms, government contractors, and other entities with regulatory requirements beyond standard 1099 compliance.

Side-by-Side: Where It Matters

Rather than listing every feature, this table focuses on the dimensions that matter most when choosing between these two services for TIN matching workflows.

Which Service Fits Your Situation?

If you need to verify TINs before filing 1099s

This is the core use case for TINCorrect. You have a list of vendors, you need to confirm their TINs match IRS records, and you want to do it quickly and affordably. TINCorrect handles single lookups in real time and bulk batches of up to 100,000 records. When you are ready to file, you can move directly into BoomTax for 1099 e-filing without switching platforms. The cost of filing with incorrect TINs makes pre-filing verification well worth the investment.

If you need to integrate TIN matching into your software

TINCorrect offers a REST API with JWT authentication, JSON responses, and clear documentation. It supports both synchronous single lookups and asynchronous bulk processing. TINCheck also provides a REST API, plus SOAP for legacy systems. If your existing infrastructure relies on SOAP/XML, that may be a relevant factor. For most modern integrations, either service works well. See our TIN Matching API Guide for integration patterns.

If you need regulatory screening beyond the IRS

TINCheck bundles broader screening into each verification call, covering sanctions lists, the Death Master File, address registries, and FATCA/GIIN verification alongside IRS matching. If your compliance requirements mandate these additional checks, TINCheck consolidates them efficiently. TINCorrect focuses specifically on the IRS TIN matching step, keeping the service simple and the per-check cost tied to what you actually need.

If you want to try before you buy

TINCorrect is the clear choice for evaluation. Create an account, get 10 free searches instantly, and test with real TIN data. No credit card, no sales process, no commitment. TINCheck requires contacting sales for pricing and access.

How TINCorrect Works

TINCorrect keeps TIN verification straightforward. Here is the process in three steps:

Further Reading

• 5 Best TIN Matching Services Compared for 2026 — See how both services stack up against all major providers.
• TIN Matching: The Complete Guide — Understand the IRS TIN Matching Program that underlies both services.
• IRS TIN Matching Result Codes — Learn what each IRS response code means.
• Bulk TIN Matching — How to verify thousands of TINs efficiently.
• Compare Hub — Return to the full comparison hub.

Author

Ken Ham

Founder at TINCorrect

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