Hi there:
Condolences on your sister in law:
1)Life insurance-If paid in one lump sum-Not Taxable.
2)Inherited retirement account-Taxable. Report amount distributed from the retirement account per form 1099R in the year received.
3)Real Estate- Could be taxable, but maybe not. Report disposition in the year of sale on your tax return. Your cost basis is the same as your sister law's at her date of death. Gain or loss will be sales price less cost basis.
4)Car-Not taxable- Assuming the car depreciates .
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