Where on TurboTax online can I do a 2024 q4 federal estimated tax calculation (due Jan 15, 2025) based on my year-to-date 2024 income and expected rest-of-2024 income?

The TurboTax online editions for tax year 2024 will only calculate 2025 estimated taxes.

You can use the TurboTax calculator, TaxCaster, to get an estimate of taxes owed or a tax refund for 2024 - https://turbotax.intuit.com/tax-tools/calculators/taxcaster/

Thanks much DoninGA.

The link looks to be outside of my need to sign into my Turbo account.

I went through the questions but had an issue with the Gains/Losses (long-term). 

I have a large long-term capital gain that is larger than the maximum allowed amount for this field of  $1,000,000. 

Is there a work around for this or am I out of luck?

Thanks again.

@tmjmzz You can try this calculator which allows LTCG of greater than $1M - https://www.taxact.com/tools/tax-calculator

Thanks much for the alternative site.

I wonder why TurboTax puts a cap on the maximum LTCG for their estimated tax calc.

I have a call with a TurboTax Expert on Monday afternoon. I'll ask then why?

I had a call with a TurboTax tax expert yesterday and the TaxCaster only allows for LT capital gains of up to $1,000,000. There is no workaround.

So will use the TaxAct.com online calculator that you mentioned.

Thanks for that suggestion.