ACH Transactions1

Bank Accounts5

Companies18

Company Attachment4

Company Benefits13

Company Forms4

Contractor Documents4

Contractor Forms4

Contractor Payment Groups8

Contractor Payment Method4

Contractor Payments9

Contractors14

Departments7

Earning Types4

Employee Addresses10

Employee Benefits11

Employee Employments10

Employee Forms5

Employee Payment Method6

Employee Tax Setup4

Employees13

Events1

External Payrolls9

Federal Tax Details2

Flows1

Garnishments5

Generated Documents1

Holiday Pay Policies7

I-9 Verification7

Industry Selection2

Information Requests1

Introspection2

Invoices1

Jobs and Compensations10

Locations5

Member Portal Invitations6

Notifications2

Pay Schedules9

Payment Configs2

Payroll Cancellations2

Payroll Digests2

Payrolls20

People Batches2

Recovery Cases2

Reimbursements5

Reports7

Reverse Wire Transactions1

Salary Estimates5

Signatories5

Tax Payments2

Tax Requirements3

Time Off Policies9

Time Off Requests9

Webhooks8

Wire In Requests3

Signatories

Create a signatory

Creates a company signatory with complete information. The company must not already have a signatory.

A signatory can legally sign forms once the identity verification process is successful. The signatory should be an officer, owner, general partner or LLC member manager, plan administrator, fiduciary, or an authorized representative who is designated to sign agreements on the company's behalf. An officer is the president, vice president, treasurer, chief accounting officer, etc. There can only be a single primary signatory in a company.

Webhooks

signatory.created: Fires when a signatory is successfully created.

Related guides

Signatory Events

scope: signatories:manage

post/v1/companies/{company_uuid}/signatories

Request

Base URL
https://api.gusto-demo.com
Auth
HTTP bearer
TypeScript
https://skmtc.dev/gusto/apis/gusto-api/docs/v1/companies/:company_uuid/signatories/post.ts
A function with typed inputs. Its response is checked against the schema.

Path parameters

company_uuidstring required

The UUID of the company

Headers

X-Gusto-API-Version'2026-06-15'

Determines the date-based API version associated with your API call. If none is provided, your application's minimum API version is used.

Request body

first_namestring required

The signatory's first name.

middle_initialstring

last_namestring required

The signatory's last name.

titlestring required

The signatory's title (e.g. CEO, President).

phonestring required

The signatory's phone number.

birthdaystring date required

The signatory's date of birth.

emailstring email required

The signatory's email address.

ssnstring required

The signatory's SSN.

Response

Successful

uuidstring required

first_namestring nullable

last_namestring nullable

titlestring nullable

phonestring nullable

emailstring

birthdaystring nullable

is_adminboolean

Whether or not the signatory is also the payroll admin of the company.

has_ssnboolean

Indicates whether the signatory has an SSN in Gusto.

versionstring

The current version of the signatory. See the versioning guide for information on how to use this field.

identity_verification_status'Pass' | 'Fail' | 'Skipped' nullable


Status	Description
Pass	Signatory can sign all forms
Fail	Signatory cannot sign forms
Skipped	Signatory cannot sign Form 8655 until the form is manually uploaded as wet-signed
null	Identity verification process has not been completed

Changes

No recorded changes to this operation across all 2 revisions of this API.