aid: fifteenth
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fifteenth.png
name: Fifteenth
description: >-
  Fifteenth is a San Francisco-based fintech company operating an AI-powered
  personal tax platform for ambitious earners — founders, investors, executives,
  and technology professionals with complex financial situations such as equity
  compensation (ISOs, RSOs, RSUs, NSOs), liquidity events (IPOs and acquisitions),
  partnership income (K-1s), and active stock and crypto trading. The service
  pairs dedicated human CPAs with AI-driven automation: users link their banking,
  payroll, and investment accounts via one-click integrations (Workday, Rippling,
  Robinhood, Wealthfront, Carta, Charles Schwab, AngelList, Coinbase and more),
  and the platform automatically detects tax-relevant transactions, organizes
  documents, models scenarios, and delivers proactive quarterly planning plus
  unlimited year-round advice at flat-fee pricing starting around $1,000 per year.
  Fifteenth raised $8.25M in seed funding (February 2025) led by A* and General
  Catalyst. It is a consumer-facing product with no public developer API surface;
  this profile captures its identity and public web properties.
url: https://raw.githubusercontent.com/api-evangelist/fifteenth/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Fintech
- Taxes
- Tax Preparation
- Tax Planning
- Personal Finance
- Equity Compensation
- Accounting
- Artificial Intelligence
apis: []
common:
- type: DomainSecurity
  url: security/fifteenth-domain-security.yml
- type: Website
  url: https://www.fifteenth.com/
- type: Pricing
  url: https://www.fifteenth.com/#Pricing
- type: SignUp
  url: https://login.fifteenth.com/sign-up
- type: Login
  url: https://app.fifteenth.com
- type: TermsOfService
  url: https://www.fifteenth.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.fifteenth.com/privacy
- type: Blog
  url: https://www.fifteenth.com/resource-center
- type: Support
  url: mailto:hello@fifteenth.com
- type: TrustCenter
  url: https://app.drata.com/trust/9a0b5ee4-d65b-489a-bbdb-0fb41a42c1e3
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence