The short answer: nothing is clawed back on the day you move in. Moving into a rental is not a sale, and a cost segregation study is not undone by a change of address. What actually happens is simpler and slower than most owners fear. Depreciation stops the month the property stops being a rental, every dollar you already deducted stays recorded against your basis, and the bill for it is settled later — when you sell, if you sell at a gain. The expensive part is not the move. It is that the primary-residence exclusion most owners are counting on cannot erase the depreciation they took, and cannot cover the years the house was a rental.
Depreciation stops at conversion, not at year end.
Depreciation is allowed only for property held for business or income-producing use. The day the last tenant leaves and you move your own furniture in, that use ends, and the depreciation schedule stops with it. You claim depreciation for the portion of the year the property was still a rental, then nothing further. The 5-, 7-, and 15-year assets a study carved out, the 27.5-year building, the whole schedule: frozen, not reversed.
Partial conversions follow the same logic by proportion. If you move into one unit of a duplex and keep renting the other, the rented share stays on the depreciation schedule and the share you occupy comes off it. That is the same allocation question a house hacker faces from day one, which we walk through in cost segregation when you house hack.
Is depreciation recaptured when I move into my rental?
No. Recapture is triggered by a disposition — a sale, an exchange, a transfer — and converting to personal use is none of those. There is no return to file reporting it, and no tax due that year. Bonus depreciation on the short-life assets a study identified is not clawed back either, because residential rental assets are not listed property and the business-use recapture rules that catch vehicles and similar assets do not reach them.
What the conversion does is leave a balance standing. Your adjusted basis is permanently lower by everything you deducted, and that lower basis is what the eventual gain is measured against. The deduction was a deferral all along; moving in neither cancels the deferral nor calls it in.
A worked example, in dollars.
Take a $540,000 single-family rental acquired in 2025, with 80% of the price allocated to depreciable basis after carving out land — $432,000. A residential study reclassifies roughly 23% of that, about $99,000, into 5-, 7-, and 15-year property. With 100% bonus depreciation in effect for property acquired (contract signed) and placed in service after January 19, 2025, that $99,000 is deductible in year one. At a 32% marginal federal rate, that is roughly $31,700 of year-one tax savings.
The remaining $333,000 of building basis runs over 27.5 years, about $12,100 a year. Rent it for three years, then move in: total depreciation claimed is roughly $99,000 plus $36,300, or $135,300. From the month you move in, that number stops growing. It also stops being optional — it is the figure that comes back into the conversation whenever the property is sold, to the extent there is gain to apply it against.
Why Section 121 will not wipe the depreciation out.
This is the part that surprises people. Live in the house two of the five years before selling and you can generally exclude up to $250,000 of gain, $500,000 married filing jointly. But the exclusion explicitly does not apply to gain attributable to depreciation allowed after May 6, 1997. That $135,300 is taxed when you sell regardless of how long you have lived there: the portion tied to the 5-, 7-, and 15-year assets as ordinary-income recapture, the building portion as unrecaptured Section 1250 gain at a maximum 25% rate. The exclusion covers appreciation. It does not cover depreciation.
Then there is nonqualified use. For periods after 2008 in which the home was not your principal residence, the gain allocated to those years is not excludable either. Three years as a rental followed by five as your home means a share of the appreciation — not just the depreciation — stays taxable. Owners who plan to move in specifically to wash out the gain usually find the exclusion does far less work than they expected. The sequencing is covered in more depth in cost segregation and the Section 121 exclusion.
Does this mean the study was a mistake?
Usually not, but it changes how you should read the benefit. A study accelerates deductions into the years you own a rental, at the marginal rate you face in those years. If those were high-income years and the eventual recapture lands in a lower-rate retirement year, the arbitrage is real even after the bill arrives. If the deduction was suspended as a passive loss and never used, the picture is different: the loss sits until a disposition releases it, while the basis reduction is already locked in. Knowing which of those two situations you are in is the whole analysis, and it is worth doing before the moving truck is booked rather than after.
What to do before you convert.
Three things are worth settling in advance. Fix the conversion date in writing, because it sets the last month of depreciation and starts the clock on nonqualified use. Keep the study and the depreciation schedules permanently — the asset detail is what substantiates the basis reduction years later, when the sale is being reported and the original return is long closed. And get a read on the gain picture before you move, not after, since the order of operations is one of the few variables still under your control. Our free instant estimate shows the projected savings side of that equation in a couple of minutes.