The program calculates an annual estimate for a U.S. Federal Tax Filing. It currently supports 2018, 2019, 2020, 2021, 2022, 2023, and 2024. It will be updated for 2025 when sufficient IRS data for 2025 are available. The application allows for multiple tax scenarios which can be saved locally and recalled. The recalled scenarios can be modified and resaved. All data is saved locally only.