Property’s basis for 2 separate inheritance events for same property to same heirs

[15Gornzz51]

1] Three owner’s (A, B & C) own farmland and each owns one-third.


2] On 15 May 2015 owner A dies and heirs D, E, F, G & H equally inherit A’s one-third. The land is appraised at $120000.
B & C still own 1/3rd or 5/15th, while D, E, F, G & H now own 1/15^th each.

The basis at this point for each of D, E, F, G & H is $120000(1/15) = $8000.


3] On 15 May 2021 owner B dies and heirs D, E, F, G & H equally inherit B’s one-third. The land is appraised at $330000.
C still owns 1/3rd or 5/15th, while D, E, F, G & H now own 2/15^th each.

Question: How is the basis for D, E, F, G & H determined on 15 May 2021?

[Lion]

D, E, F, G, & H each own 1/15th at $8,000 per your calculations in 2). Plus, they each own 1/15th at $22,000 per same calculations as in 2) but using appraisal in 3): $330,000(1/15) = $22000. If I follow your scenario.

C retains his original basis.