TaxEventLog: Equity & Token Taxable Event Tracker for Founder-Employees

The Problem

A high-signal pain point on r/personalfinance, r/cscareerquestions, and r/startups is that developer-employees and early startup founders have ISO/NSO options, RSUs, and sometimes token grants that each trigger different tax events at exercise, vesting, or sale — and they discover the tax liability only when their accountant bills them in April. TaxEventLog is a structured ledger where users log each equity event (grant, cliff, vest, exercise, sale) with dates and prices, and the app calculates the estimated AMT exposure, ordinary income, and capital gains in real time, with export to a CPA-ready PDF.

Target Audience

Developer-employees at startups, early-stage founders with equity grants, and indie hackers who have taken on angel investment with equity implications

Monetization Angle

$19/mo or $99/year; one-time CPA export report at $29 for non-subscribers

Recommended Tech Stack

Why Now

The 2024-2025 wave of startup IPOs and acquisitions is vesting millions of dollars in employee equity for the first time for many developers who have never navigated equity taxation before.

MVP Scope

A manual event log (grant date, type, strike price, FMV at exercise, quantity) with a single-page tax exposure summary showing estimated AMT, ordinary income, and long-term cap gains buckets.

AI Angle

AI explains each tax event in plain English as the user logs it ('You just triggered an AMT preference item — here is what that means and what to ask your CPA') without giving specific advice.

Primary Risk

This touches tax advice territory — the app must clearly disclaim it is not tax advice, and the biggest risk is users over-relying on estimates and under-preparing for actual liability.

Validation Checklist

• Search r/personalfinance for 'ISO exercise tax' threads from the past 6 months and DM commenters who expressed confusion
• Post 'How do you track your equity tax events before talking to your accountant?' on r/cscareerquestions
• Find 10 startup employees who recently went through an acquisition and ask how they managed the tax tracking
• Validate willingness to pay by offering a $29 manual equity tax event review (you do it in a spreadsheet) to 5 beta users before building

Who Would Pay For This

Likely buyers are people already trying to solve this problem with manual workarounds. Start with Developer-employees at startups, early-stage founders with equity grants, and indie hackers who have taken on angel investment with equity implications and validate urgency before adding secondary features.

First 10 Users

Find the first 10 users by searching for recent complaints around "finance equity" in Reddit, developer communities, GitHub issues, and niche Slack or Discord groups. Offer a concierge version first: manually solve the workflow for a few users, then automate only the repeated steps.

Why This Idea Has Legs

• Sourced from real discussions and complaints across Reddit and social media
• Cross-checked against recurring demand signals in the IdeaGenius archive
• Difficulty rated Medium — buildable by a solo developer or small team
• Clear monetization path from day one

Generate Your Full Project Spec

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