CoastMath

CoastMath is an open-source personal finance and retirement planner that models yearly financial projections from your next paycheck through to your last withdrawal. It accounts for federal, state and local taxes, accounts and withdrawal order, Social Security, healthcare, and applies Monte Carlo and historical stress tests along with actual spending imported from transactions. It includes a calculation engine, API, and a web app runnable via Docker or locally, storing data in an SQLite file.