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COcolumntax
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  • post/v1/usersCreate a User
  • patch/v1/usersUpdate User Information
  • post/v1/exp/initialize_tax_filingInitialize Tax Filing
  • get/v1/users/{user_identifier}/tax_returnsTax Returns
  • get/v1/users/{user_identifier}/tax_returns_detailsTax Return Details — Get User
  • get/v1/users/tax_returns_details?tax_year_filter={param_name}Tax Returns Details — Get List of Users
  • get/v1/users/{id}/tax_return_statusTax Return Status
  • post/v1/users/{id}/personal_informationPersonal Information
  • post/v1/users/{id}/w-2W-2
  • post/v1/users/{id}/1099-nec1099-NEC
  • post/v1/users/{id}/1099-misc1099-MISC
  • post/v1/users/{id}/schedule-cSchedule C
  • post/v1/users/{id}/extension_paymentExtension Payment
  • post/v1/users/{id}/refund_deposit_accountRefund Deposit Account
  • get/v1/users/{id}/statusTax Refund Unlock Status
CO

column-tax-api

Pipelines

Tax filing: initialize filings, retrieve user tax returns, receive webhook events

15 operations0 models2 revisions

Changes

Full history

Updated 3 Nov 2026

Source

View schema
Spec
OpenAPI 3.1.0
Retrieved
Nov 3, 2026, 09:40 UTC
Digest
a1b57b175f2b

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/columntax/apis/column-tax-api.md
curl https://skmtc.dev/columntax/apis/column-tax-api/llms.txt
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