Welcome to Fifteenth Partner API
The Fifteenth Partner API enables financial institutions to integrate professional tax preparation services into their client workflows.Core Features
Client Accounts
Create tax preparation accounts for your clients
Document Upload
Upload tax documents for processing
Project Status
Track tax preparation progress
Deliverables
Access completed tax returns and reports
API Details
Base URL:https://api.fifteenth.com/v1beta
Authentication: Bearer token with API key
Rate Limit: 100 requests per minute
Getting Started
Quickstart Guide
Make your first API call in minutes