Selling a Home After Claiming a Home Office Deduction: Section 121 and Depreciation

IRC §121 may exclude up to $250,000 of qualifying gain, or up to $500,000 on certain joint returns, when the ownership, use, prior-sale, and joint-return requirements are met. A home office affects the calculation differently depending on where it was located and whether depreciation was allowed or allowable.

Office Inside the Dwelling Unit

When the business area is inside the same dwelling unit as the residence, the taxpayer generally does not allocate a separate portion of the overall gain away from Section 121 solely because of the business use. The ownership and use tests must still be met for the property.

Depreciation After May 6, 1997 Is Not Excludable

Gain attributable to depreciation deductions allowed or allowable for periods after May 6, 1997 generally cannot be excluded under Section 121. For depreciable real property, that gain may be unrecaptured Section 1250 gain subject to a maximum 25% federal rate rather than ordinary “recapture” in every case.

Using the simplified home-office method generally does not create a depreciation deduction for the home for that year. Actual-expense years and prior depreciation records should be reviewed separately.

Detached Structures

A detached studio, garage, guesthouse, or other separate structure used for business may require allocation of basis and gain. Whether the separate structure independently satisfies the residence-use test, and whether the properties are sold together, can affect the exclusion.

Nonqualified Use and Partial Exclusions

Periods of nonqualified use after 2008 can reduce the excludable gain, subject to statutory exceptions. A taxpayer who fails the full two-out-of-five-year tests may still qualify for a reduced exclusion when the sale is primarily due to a qualifying change in employment, health, or unforeseen circumstance.

Records Needed at Sale

Retain purchase and improvement records, prior depreciation schedules, home-office calculations, simplified-method elections, dates of business and personal use, and support for any detached-structure allocation. “Allowable” depreciation may matter even when a deduction was omitted.

Section 121 treatment depends on ownership, use, prior exclusions, depreciation, and the physical property sold. This information is educational and is not a calculation of excludable gain for a particular sale.