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Basis Calculations

Basis is the amount of a taxpayer's investment in an asset for tax purposes, used to determine gain or loss on disposition and depreciation deductions.

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Explanation

Cost basis is the starting point for purchased assets. Gifted property takes the donor's carryover basis (with a special rule for losses when FMV < basis at gift date). Inherited property receives a stepped-up basis to fair market value at the date of death. For pass-through entities, a partner's or shareholder's outside basis adjusts annually for contributions, income, losses, and distributions. Adjusted basis equals original basis plus improvements and other additions, minus depreciation and other reductions.

Key Points

  • Purchased assets: cost basis; gifts: carryover basis; inherited property: stepped-up to FMV
  • Adjusted basis = original basis + improvements − depreciation
  • Pass-through entity basis adjusts for income, losses, contributions, and distributions

Exam Tip

For gifted property where FMV < donor basis at the gift date, use FMV for computing losses and donor basis for computing gains — if selling price is between, no gain or loss.

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