Q. Is there a calculator that will show how much I will pay on taxes of the sale?
A. 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 gain to see the effect on your tax. Your share of the sale price of the house is not taxable income. Any taxable income is the the capital gain (profit) on the sale. Enter the difference between the sale price and your cost basis as a long term capital gain (LTCG).
But, as others have said, you most likely do not have a gain, because the stepped up value of your share of the house is your cost basis. Given the expenses of sale (e.g. Realtor commission), you may even have a loss. So, another question you might want to ask is:
Q. Is a loss on the sale deductible?
A. It depends on how the property was used between the time you inherited it and sold it. You may deduct a loss on investment property, but not on personal use property.
If the house sat vacant during that time, then it was "investment property", and you can deduct the loss. If it was used as a home by any family member, it is personal use property and you cannot deduct the loss on your share.
