A: You are obliged to pay capital gains tax (CGT) on the profit realised when selling the property. The profit in this case will be the difference between the market value at the time of inheritance versus the selling price in December.
Unfortunately the CAT paid cannot be used to reduce the CGT you are now due to pay. CGT can only be offset against CAT on the “same event” disposal of an asset. For example, if the property was gifted to you there would be CGT for the person gifting and CAT due for you as the person receiving the asset.
If you disposed of the property between the 1st and 31st of December 2015, you will need to make a preliminary CGT payment by 31st January 2016 and file the details on your 2015 income tax return
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