Reporting the sale as if it happened in 2024 might not give you an accurate tax total since the treatment of the capital gain will depend on your other income, and the depreciation recapture will be taxed as Ordinary Income.
If everything will be the same, you might try using that as a guess, but there won't be rental income/loss so that might make a difference.
It's also unclear why you were required to pay estimated tax payments for 2024.
Are you concerned about making estimated payments because of an Underpayment Penalty or are you concerned because you don't want to have to make a large tax payment for 2025?
If you simply don't want a penalty, according to the IRS:
"You may avoid the Underpayment of Estimated Tax by Individuals Penalty if:
- Your filed tax return shows you owe less than $1,000 or
- You paid at least 90% of the tax shown on the return for the taxable year or 100% of the tax shown on the return for the prior year, whichever amount is less. If your adjusted gross income (AGI) for 2023 was more than $150,000 ($75,000 if your filing status for 2024 is married filing separately), substitute 110% for 100%."
I would use the information above to decide if you need to make estimated tax payments.
If you pay 100% (or 110% if applicable) of your 2024 Tax Liability in 2025, there will not be an underpayment penalty.
The amount of tax that you must pay in 2025 should be made evenly over the year, or as you earn the income (sell the property). Some of the tax might be paid as withholding if you are a W-2 employee.
Let's say your tax liability (Form 1040 Line 24; not simply your payment due) was 20,000. If you pay at least 22,000 in 2025, there will be no penalty.
If you are trying to avoid a large tax payment due with your 2025 return, you'll need to try to figure what the sale will do to your 2025 tax liability by applying your tax rate to the depreciation recapture and then adding the tax for the capital gain to the tax on your other income.
Here is a link from TurboTax with more information.
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