Nutshell Tax

1099 tax developer hub

Nutshell helps businesses prepare recipient statements and submit information returns to tax authorities.

Integration workflows
The full API contract
Ready-to-import Postman resources

staging.env

# Select the staging environment
NUTSHELL_CLIENT_ID="ID"
NUTSHELL_CLIENT_SECRET="SECRET"

# Request paths use the selected base URL
POST {{baseUrl}}/api/v2/
     {{tax_year}}/filers

# URLs vary by environment
Contact Nutshell for access.

Current versionAPI v2.1.0

OpenAPI YAML

Documentation

API reference

Browse endpoints, schemas, examples, and error responses for the current release.

Open API reference Download OpenAPI YAML

Workflow guides

Follow the complete path for each reporting scenario, from authentication and data creation through statements, filing, and history.

1099-B 1099-DA 1099-MISC 1099-NEC 1042-S Supplemental operations

Postman

Download the public guided workflow collection. The full collection and staging environment require password access.

Download guided workflows Download full API collection Download staging environment