Try this tool https://turbotax.intuit.com/tax-tools/calculators/taxcaster/?s=1. Enter your regular income
first to see the regular tax. Then add the sale to see the effect.
Enter the difference between the sale price
and what you paid for it originally as a long term capital gain (LTCG). Enter
the depreciation you've taken, or should have taken, (depreciation "recapture")
as other income. Depending on how much total income you have LTCG are partially
taxed at 0%, 15%, 20% and/or 23.8%. Depreciation recapture is taxed at your
marginal rate, but not more than 25%.
For a detailed write up on this complicated
topic see https://ttlc.intuit.com/questions/2593356-sale-of-rental-property-in-2014. You may want to use professional tax help when the time
comes, although TurboTax can handle it
