About W-2 Parser

W-2 parsing API: map box-level JSON to your application. Establish a stable mapping between returned field keys and your internal schema.

Built for a specific review workflow

Who it serves: Developers integrating a W-2 endpoint.

W-2 Parser turns supported document inputs into structured fields for a person or application to review. The useful result is a record you can compare with the source and map to your next step.

  1. POST a representative W-2 with an API key.
  2. Validate the response shape, warnings, and required fields in your code.
  3. Test the mapping on your form years and state layouts before expanding.

What needs a human check

  • Use box1_wages and box2_federal_tax rather than guessing display-label keys.
  • Treat null, zero, and an absent key as different states.
  • Keep the source file reference with your own application record.

If a required field is null or listed in needsReview, retain the response for review instead of substituting zero.

Extraction is not document authentication or professional tax, legal, medical, insurance, or credit advice. Check material values against the source before relying on them.

Who operates W-2 Parser

W-2 Parser is built and operated by Soxoa LLC, an AI consulting and software business based in Sacramento, California. Our related document tools share ownership; they are not independent endorsements of each other.

Questions about the product or your data? Email john@soxoa.com. Read the privacy policy and terms before sending sensitive documents.

Evaluate it on your document type

The sample page explains the expected fields, review checks, and an illustrative output. Test representative, permitted documents before connecting a downstream workflow.

Explore the sample and field guide