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These docs are for v2024-04-01. Click to read the latest docs for v2025-06-15.

Getting started

Introduction
Platform overview
Quickstart
- Getting started
Payroll fundamentals

Developer tools

Postman
API versioning
- Version upgrade guide
Authentication and authorization
Errors
- Error Categories
Idempotency
Pagination
Rate limits
Scopes
Webhooks
Partner Notifications
- Partner Notification types
- Testing Partner Notifications
API Clients

Gusto Flows (Pre-built UI)

Flows quickstart
Customize flows
Flow types
Try it now
Flow events

React SDK

What is the GEP React SDK?
Deciding to build with the SDK
- Build Pathways - SDK, Flows, & API
- Component Types
Getting Started
- Authentication
Integration Guide
Workflows Overview
- Employee Onboarding
  - Employee Self-Onboarding
- Company Onboarding

Companies

Introduction
Onboard a company
- Migrate an existing company
- Onboard a contractor-only company
Manage company locations
Manage company bank accounts
Create company benefits
Company forms
Manage company attachments
Create a department
Calculate an invoice

W2 Employees

Introduction
Onboard a W2 Employee
- Onboarding Method Comparison
Create a Job and Compensation
- Adjust for minimum wage
W2 Employee Forms
- I-9 Employment Verification
  - I-9 Verification Using Flows
Terminate a W2 Employee
Rehire a W2 Employee
Manage Employee Addresses: Effective Dating
Create a Child Support Garnishment

Contractors

Introduction
Onboard a Contractor
- Onboarding Method Comparison
Terminate a Contractor
Contractor Payments
- Contractor Payment Receipts
Contractor Forms and Documents
- Contractor Forms
- Contractor Documents

Payrolls

Introduction
Payroll Processing Speeds
Recovery Cases
Calculate An Employee's Gross Wage
Complete a Regular Payroll
Create an Off Cycle Payroll
Create a Termination Payroll Flow
Create Company Specific Custom Earnings
Create a Historical Payroll
Pay Schedules
Generate Printable Paper Checks
Gross-Up

Reports

Generate Custom Reports
Retrieve a General Ledger report

ACH TRANSACTIONS

ACH Transactions
- ACH Codes and Transaction Types
- Bank Errors

Time Off

Create a Time Off Policy
Create a Holiday Pay Policy

Product Partnerships

Health Insurance (SimplyInsured)
On-Demand Pay (Clair)
Workers' Compensation (NEXT)
401(k) (Guideline)
Accounting integrations (Xero and QuickBooks Online)

Contact

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Updated 2 days ago

Accounting integrations (Xero and QuickBooks Online)

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