I bought my current house in March 2015 and sold a previous house in April 2015. On my 2015 tax return I excluded the gain on the sale. I am now thinking about moving again. I have met the other rules, but there is a rule about not having excluded the gain on sale of another house within the last two years. My question is this: When does the two years start? Is it 2015 and 2016, so now in 2017 I'm good to go? Or do I need to wait until 2018? Thanks!