Most real estate professionals are familiar with capital gains taxes especially at the federal level. Meanwhile, state capital gains tax rates might also impact the bottom line. Capital gains taxes are paid at the time of sale of an asset (i.e. real estate). As of May 2018, Guam has the highest maximum rate at 20 percent whereas North Dakota has the lowest maximum rate at 2.9 percent. Download State Real Estate Capital Gains Rate Chart (log-in required) to learn what your state’s capital gains tax rate.