SafeHarborQ

SafeHarborQ is a web + mobile app (traditional app with light AI assistance) that calculates quarterly estimated tax payments using the IRS safe-harbor rules, not vague “set aside 30%” advice. Users connect bank/credit card feeds and optionally their accounting app to categorize income/expenses and project taxable income through year-end. The app then outputs quarter-by-quarter payment recommendations, due-date reminders, and a simple “what changed” explanation when the number moves (new client, expense spike, withholding change). It also generates a payment checklist (EFTPS/Direct Pay links, state portals) and stores confirmation notes so users can prove they paid. This is not a full tax filing product; it’s a focused estimator and planning tool meant to reduce penalties, surprises, and decision fatigue for self-employed people and side hustlers.