Donald and his significant other, Donna, owned vacant land zoned for commercial developement. They held title to the property as joint tenants. Each contributed $3000,000 of the $600,000 purchase price. Donald died recently when the property had a FMV of $1,300,000. For estate tax purposes only, the IRS would presume the value of Donald's interst in the property at his death was how much?

If Donald's estate was able to establish that Donna contributed $300,000 of the purchase price, how much of the property value would be included in Donald's estate?

If Donna decides to sell the property immediately after Donald's death, what would the property basis be?

If Donald and Donna were husband and wife and held the property as community property, for estate tax purposes only, the IRS would presume the value of Donald's interest in the property at his death was how much?

If Donald and Donna were husband and wife and held the property as cummunity property, and if Donna decided to sell the property immediately after Donald's death, what would the property basis be?