---
title: "Personal Information"
method: POST
path: "/v1/users/{id}/personal_information"
---

# Personal Information

`POST /v1/users/{id}/personal_information`

## Request

- Base URL: `https://sandbox.columnapi.com`
- URL: `https://sandbox.columnapi.com/v1/users/{id}/personal_information`
- Auth: HTTP basic

Pre-fill personal information about a taxpayer

## Path parameters

- `id` string, required

## Request body

- object
  - `tax_year` integer, required: The tax year for the document. Remember that processing for tax year 2021 happens in 2022!
  - `address` object: The taxpayer's address.
    - `address` string: The taxpayer's address.
    - `apt_no` string: The taxpayer's apartment number.
    - `city` string: The city corresponding to the taxpayer's address.
    - `state` string: The state as a two-letter abbreviation, e.g. "CA".
    - `zip_code` string: The ZIP code corresponding to the taxpayer's address.
  - `taxpayer_personal_info` object: Personal information about the taxpayer.
    - `date_of_birth` string, date: The taxpayer's date of birth in ISO 8601 format: "YYYY-MM-DD".
    - `first_name` string: The taxpayer's first name.
    - `middle_initial` string: The taxpayer's middle initial, if they have one.
    - `last_name` string: The taxpayer's last name.
    - `social_security_number` string: The taxpayer's Social Security Number without dashes. Column Tax stores this (and all) information about users securely (encrypted at rest).
    - `occupation` string: The taxpayer's occupation.
    - `phone` string: The taxpayer's phone number. This should be a 10-digit number. Do not include country code because we are expecting a US phone number.

## Response `200`

200

- object
  - `id` string
  - `created_timestamp` integer

## Other responses

- `400`: 400
- `401`: 401
- `404`: 404

## Changes

- **2026-11-03** `a1b57b175f2b`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/columntax/apis/column-tax-api/changes/v1/users/:id/personal_information/post.md)

---

[API](https://skmtc.dev/columntax/apis/column-tax-api.md) - [All operations](https://skmtc.dev/columntax/apis/column-tax-api/llms.txt) - [OpenAPI document](https://skmtc.dev/columntax/apis/column-tax-api/revisions/a1b57b175f2b?raw)