What is Form 8829 Line 41 — Depreciation Allowable?

The depreciation deduction for the business portion of your home. Depreciation spreads the cost of your home (excluding land) over its applicable recovery period. The IRS treats a home office as nonresidential real property -- so you depreciate it over 39 years using the mid-month convention. This line takes the business-use portion of your home's adjusted basis, applies the depreciation percentage from the IRS table, and gives you the annual deduction. Depreciation is the last expense category...

What do people miss on Form 8829 Line 41?

The IRS requires you to reduce your home's basis by the depreciation you were allowed to take, whether or not you actually claimed it. If you skip depreciation for five years to avoid basis reduction, the IRS treats you as if you took it anyway. Skipping depreciation costs you the deduction now and still reduces your basis when you sell. Always claim it. Line 37 asks for the lesser of your home's adjusted basis or its fair market value when you first started using it for business. If your home...

What is the common mistake on Form 8829 Line 41?

Depreciating land. Land does not wear out and cannot be depreciated. You must subtract the value of the land from your home's cost or fair market value before calculating depreciation. Property tax assessments often break out land and improvement values separately -- use that split. If your assessment does not provide a breakdown, a reasonable allocation (often 20-30% for land in most areas) is required. Depreciating the full purchase price including land overstates your deduction.

Form 8829Expenses for Business Use of Your Home

41 — Depreciation Allowable Updated for tax year 2025

41 — Depreciation Allowable Updated for tax year 2025

Related lines on your return