Gifted Property Capital Gains Calculator
Estimate gain/loss and an approximate capital gains tax when you sell a property you received as a gift.
How capital gains tax works for gifted property
Selling gifted real estate can be tricky because your tax basis is not always simply what the property was worth when you received it. In many cases, you inherit the donor's basis (often called a carryover basis) for gain calculations. But if the property had dropped in value before the gift, the IRS generally applies a dual-basis rule: one basis for gain, another basis for loss.
The three possible outcomes
- Taxable gain: If your amount realized is above the gain basis, you likely have capital gain.
- Potential capital loss: If your amount realized is below the loss basis, you may have a capital loss (subject to limits/rules).
- No gain and no loss: If sale value falls between gain and loss basis under dual-basis rules, no gain/loss is recognized.
What this calculator uses
This calculator estimates tax in a practical, planning-oriented way using these core inputs:
- Donor adjusted basis: Usually original cost plus improvements minus depreciation taken by donor.
- FMV at gift date: Needed to test whether dual-basis rules apply.
- Gift tax adjustment: Optional basis increase on the gain side when applicable.
- Your improvements: Capital improvements made after receiving the gift.
- Sale price and selling expenses: To determine amount realized.
- Tax rates: Federal + state + NIIT/surtax for estimate only.
Formula summary
1) Amount realized
Amount realized = Sale price - Selling expenses
2) Gain basis
Gain basis = Donor basis + Gift tax adjustment + Your improvements
3) Loss basis
If FMV at gift date was lower than donor basis, then: Loss basis = FMV at gift date + Your improvements. Otherwise, this calculator uses donor basis plus improvements for loss estimate.
4) Tax estimate on gain
Estimated tax = Taxable gain × (Federal + State + NIIT rates)
Worked examples
Example A: Appreciated property gift
Donor basis is $120,000, FMV on gift date is $200,000, and you later sell for $280,000 with $20,000 selling costs. With $10,000 of improvements and a 20% combined tax rate, the taxable gain is generally significant because amount realized exceeds gain basis.
Example B: Property value dropped before gift
Donor basis is $300,000, FMV on gift date is $240,000. This triggers dual-basis treatment. If you sell for a value between those numbers (after adjustments), the transaction may produce no recognized gain or loss.
How to lower capital gains tax legally
- Keep detailed records of donor basis documentation and improvement receipts.
- Track all selling costs (commissions, legal fees, transfer taxes, staging, etc.).
- Review whether an exclusion may apply if property became your primary residence and requirements are met.
- Consider timing of sale across tax years to manage bracket effects.
- Coordinate with a CPA/EA for state-specific rules and recapture issues.
Documents you should gather before filing
- Gift transfer paperwork and gift date valuation support
- Donor's purchase documents and adjusted basis records
- Improvement invoices and proof of payment
- Closing statement from sale and settlement costs
- Any records of depreciation if property was ever rented
Important limitations
This calculator is intentionally simplified for planning. It does not automatically handle depreciation recapture, installment sales, nonresident withholding, passive loss carryforwards, or complex gift-tax basis computations. Always verify with a tax professional before filing.