Your exit gets taxed at three different rates. The ugliest one hides until closing.
Most operators carry a single number in their heads when they think about selling: the long-term capital gains rate, somewhere around 15 to 20 percent. They run the deal, estimate the gain, apply that one rate, and call it a tax plan. The IRS doesn't see one gain at one rate. It sees a stack of three separate slices, each taxed differently, and the size of each slice was set years before the building ever hit the market. The blended number in your head is hiding the slice that actually hurts.
First, How the Gain Is Even Built
Before the gain gets split, it has to be calculated, and the calculation is where the trouble starts. Total gain is your sale price minus your adjusted basis. Basis is your original acquisition cost reduced by every dollar of depreciation you took over the hold.
Plain English: the depreciation that sheltered your income each year didn't vanish. It lowered your basis, and a lower basis means a larger gain when you sell. The deductions that felt like a win during the hold quietly inflate the number you're taxed on at the exit. The more you depreciated, the bigger the gain you're now standing in front of, and the question stops being how much you gained and becomes which rate applies to which part of it.
Then the Gain Gets Carved Into Three
Here is where the single-rate assumption falls apart. That total gain doesn't move through your return as one figure. It gets carved into three buckets, and the dollars in each are determined by how you depreciated the property over the years you held it.
The first bucket is Section 1245 recapture. This is the bonus depreciation you claimed on the personal property and land improvements you pulled out through a cost segregation study. It gets recaptured at ordinary income rates, up to 37 percent federal. The second bucket is Section 1250 recapture, the straight-line depreciation on the building itself. That slice is taxed at a federal rate capped at 25 percent. The third bucket is Section 1231 gain, the true appreciation above your original cost, the part of the deal that represents the property actually going up in value. That slice gets the long-term capital gains rate of 15 to 20 percent most operators assume applies to everything.
Same sale price, three rates. The 1231 bucket is the one operators picture. The 1250 and 1245 buckets are the ones that quietly raise the average, and the 1245 bucket at ordinary rates is the one that does real damage.
The Size of Each Slice Was Decided Years Ago
The hard part to absorb is that you don't get to choose the mix at closing. The dollars in each bucket are locked by decisions you already made, sometimes a decade earlier. Aggressive cost segregation pulls more of your gain into the 1245 bucket, the 37 percent bucket, because every dollar of accelerated personal-property depreciation is a dollar of ordinary-income recapture waiting at the exit. A more conservative depreciation approach leaves more of the gain in the 1250 and 1231 buckets at gentler rates.
This isn't an argument against cost seg. The front-end deferral is worth real money, and accelerating depreciation is often the right call. It's a reminder that the choice has a back end. The size of each slice at sale was decided years before you ever listed the building, by how you chose to depreciate it. The exit just reveals the consequences of the underwriting.
The exit just reveals the consequences of the underwriting.
Run Your Exit by Bucket Before You Sign
A single blended rate hides exactly the number that hurts. When you average the three buckets into one percentage, the ordinary-rate 1245 slice disappears into the math, and the figure looks manageable right up until the return is filed and the real liability lands.
Running your exit bucket by bucket before you sign does the opposite. It forces the 1245 recapture into the open, where you can see how large it is and decide whether a 1031 exchange, an installment sale, or another structure changes the picture while you still have time to act. The recapture stops being a surprise the moment you stop hiding it behind an average. Three buckets, three rates, and the only version of the number that's safe to rely on is the one that keeps them separate.