The Form 4868 for a tax return extension is usually available from the IRS in February. TurboTax will have the option to e-file the Form 4868 in early March.
Note that the extension only gives you an extra 6 months to file the tax return. It does not give you an extension to pay any taxes owed. You have to pay any taxes owed on or before April 15, 2024 to avoid late payment penalties.
