you can search the web for income tax calculators for 2024. WARNING their accuracy varies and may not account for everything that might affect your 2024 taxes. also, there could be changes in the tax laws for 2024 year. it really depends on what you are trying to achieve. Turbotax will calculate 2024 estimates if your 2023 return indicates that withholding might not cover enough. It also has a w-4 estimator for 2024
