@AmeliesUncle thanks for your reply. I understand the general rule to calculate the ratio,but how does the "Worksheet 3 Section B" affect the calculation " Section B. Determine your non-qualified use gain. Complete this section only if there is a period, after the year 2008, when neither you nor your spouse (or your former spouse) used the property as a main home, and that period of non-use occurred during the 5-year period prior to the date of sale and before the time when you or your spouse (or your former spouse) used the property as a main home.* Otherwise, skip to Section C. "
In your example, if I live there for 6 years, the 2-year rental is out of the 5 year period.
