I am not a CPA and you should consult a CPA or tax attorney regarding this but if you are a seller, your closing costs usually consist of your attorney fees, realtor fees, and NYS transfer tax. Your homeowner's association or management company may also have fees but those are specific to whatever development you're in. New York State transfer tax should be about $6K. With respect to your capital gains tax, you need to take the original price of the unit, including costs of purchasing, add any capital improvements, deduct any amortization you may have taken over the time you lived there - that is your cost basis. Then take your total sales price, minus costs and then deduct the cost basis. If this is your primary residence you get a $250K exemption for each person on the deed. Whatever the profit from all that is what could have capital gains exposure. I believe it is 15% federal and 5% NYS. However, if you take the profit and do a 1031 exchange, you could negate or delay the capital gains tax. You should certainly speak with your accountant about this.