I received cash in lieu after acquiring shares and selling the fractional shares through a spin-off. In the Turbotax interview, it wants me to enter the cost basis for the cash in lieu transaction. The way I understand to calculate the cost basis after reading through a bunch of threads but I wanted to confirm is to:
1. Find the closing prices of the original stock and the spin-off stock at the end of the first trading day after the spin-off.
2. Find the FMV of the original stock and spin-off stock at that time by multiplying the respective prices with the shares held.
3. Take the FMV of the original stock and spin-off stock and calculate the percentage that the spin-off stock is worth relative to the combined value of the original stock and spin-off stock.
4. Multiply the portion of the spin-off stock's value by the cost basis of the original stock to get the cost basis of the spin-off stock.
5. Multiply the fractional share sold by the cost basis of the spin-off stock to get the cost basis of the cash in lieu.
So for example, I bought the 123 shares of the original stock at $100 and received 1 share of the spin-off stock for every 10 shares of the original stock that I held. On the first day of the spin-off trading, the original stock was worth $200 and the spin-off stock was worth $75:
FMV of the original stock = 123 * $200 = $24600
FMV of the spin-off stock = 12.3 * $75 = $922.50
% value of the spin-off stock = $922.50/($24600+$922.50) = 0.0361
Cost basis of spin-off stock = 0.036*$100 = $3.61
Cost basis of fractional share = $3.61*0.3 = $1.08
Is this correct or did I miss something? Also if I sell shares in the future of the original stock or spin-off, do I have to adjust the cost basis like this as well?
