After you file

@Doebro1968 If you are using the TurboTax desktop editions you can use the What-If worksheet in Forms mode for different scenarios using the 2024 tax tables.

 

Or you can use the TurboTax calculator TaxCaster to run different scenarios using your 2023 tax data - https://turbotax.intuit.com/tax-tools/calculators/taxcaster/