Many apartment sellers are certain that if they own only one apartment, they can sell it and be exempt from real estate capital gains tax , or Mas Shevach . Most of them remember a historical exemption — which ceased to exist over a decade ago — that allowed selling an apartment tax-free once every four years. Well, that exemption no longer exists. In practice, the law does grant an exemption when selling a qualifying residential apartment that is the seller's only apartment
