Direct Answer
FFO (Funds From Operations) is net income plus real estate depreciation and amortization, minus gains (or plus losses) on property sales. It's a standardized measure defined by Nareit, the National Association of Real Estate Investment Trusts, and it's used in place of GAAP net income because real estate depreciation under GAAP frequently doesn't reflect an actual decline in a property's value.
FFO is one piece of REIT analysis. For how it fits alongside AFFO, NOI, cap rate, occupancy, and the broader choice between direct property, public REITs, and real-estate funds, see Swoopr's Real Estate & REIT Investing hub.
Key Takeaways
- FFO starts from GAAP net income and adds back real estate depreciation and amortization.
- Gains (or losses) on property sales are removed so FFO reflects ongoing operations, not one-time transactions.
- Nareit's standardized definition exists so FFO is reasonably comparable across different REITs.
- FFO is a non-GAAP supplemental measure -- REITs still report and reconcile to GAAP net income.
- AFFO is a related but non-standardized refinement some REITs and analysts calculate on top of FFO.
How Is FFO Calculated?
FFO is built directly from a REIT's GAAP income statement. The Nareit-standardized calculation is:
FFO = Net income + Real estate depreciation and amortization − Gains on property sales (+ Losses on property sales)
Each piece of that formula addresses a specific distortion in how GAAP accounting treats a real estate-heavy business:
- Real estate depreciation and amortization added back: GAAP requires depreciating buildings and related assets over their useful life, the same way it would depreciate equipment or machinery. But real estate can appreciate even while it's being depreciated for accounting purposes, so that non-cash depreciation charge frequently doesn't correspond to any real decline in economic value. Adding it back removes a distortion rather than reflecting a genuine loss.
- Gains or losses on property sales removed: Selling a property produces a gain or loss that's tied to that individual transaction, not to the REIT's recurring operating performance. Nareit's definition subtracts gains (and adds back losses) so FFO isn't skewed by whether, or how profitably, the REIT happened to sell a building in a given period.
The result is a figure intended to approximate a REIT's operating cash flow more closely than unadjusted net income does, since it strips out the parts of net income driven by accounting conventions rather than the underlying business.
Hypothetical Example -- For Education Only
These numbers are illustrative only and do not represent any real company.
Suppose a hypothetical REIT reports the following for a fiscal year:
- Net income (GAAP): $40 million
- Real estate depreciation and amortization: $25 million
- Gain on sale of a property during the year: $5 million
Applying the FFO formula:
FFO = $40 million + $25 million − $5 million = $60 million
In this hypothetical, GAAP net income of $40 million understates the REIT's operating performance because it's carrying a $25 million non-cash depreciation charge that may not reflect any real decline in the value of its properties, while also including a one-time $5 million gain from a property sale. FFO of $60 million removes both effects, leaving a figure meant to better represent recurring operating results.
Limitations and Common Mistakes
- FFO is not a GAAP measure. It's a non-GAAP supplemental disclosure, so it should be read alongside, not instead of, the GAAP net income figure it's reconciled from.
- FFO doesn't subtract capital expenditures. It's a measure of operating performance, not free cash flow -- ongoing spending needed to maintain properties isn't deducted in the standard FFO formula.
- AFFO calculations vary by company. Because AFFO isn't standardized the way FFO is, comparing AFFO across REITs requires checking how each company defines its own adjustments.
- Depreciation add-back logic is specific to real estate. It reflects the general tendency of real estate to hold or gain value even as it's depreciated for accounting purposes -- this reasoning doesn't necessarily extend to other depreciable assets a REIT may hold.
- FFO alone doesn't capture leverage or balance-sheet risk. It's an operating-performance measure and is commonly used alongside other metrics, not as a complete picture of financial health.
Frequently Asked Questions
What is FFO in REIT reporting?
FFO, or Funds From Operations, is net income plus real estate depreciation and amortization, minus gains (or plus losses) on property sales. It is a standardized measure defined by Nareit and used to approximate a REIT's operating cash flow.
Why don't REITs just report GAAP net income?
GAAP net income subtracts depreciation on real estate even though property values commonly rise over time rather than decline the way accounting depreciation assumes. That mismatch can make unadjusted net income a poor measure of a REIT's actual economic performance, which is why FFO adds depreciation and amortization back.
What's the difference between FFO and AFFO?
FFO is the standardized Nareit definition: net income plus real estate depreciation and amortization, minus property-sale gains (or plus losses). AFFO (Adjusted FFO) is a further, non-standardized refinement some REITs and analysts calculate by also subtracting recurring capital expenditures and other items, so AFFO methodology varies by company.
Is FFO a GAAP metric?
No. FFO is a non-GAAP supplemental measure. Nareit defines a standard calculation so that FFO figures are reasonably comparable across REITs, but companies still reconcile FFO back to GAAP net income in their filings.
Why is real estate depreciation added back in FFO?
Real estate depreciation is added back because, unlike depreciation on most other business assets, it commonly does not reflect an actual decline in the property's economic value -- real estate can appreciate even while it is being depreciated for accounting purposes. Adding it back removes a distortion rather than reflecting genuine value loss.
Why are gains on property sales subtracted from FFO?
Gains (or losses) on property sales are removed because they are typically one-time events tied to a specific transaction rather than recurring operating performance. Excluding them keeps FFO focused on the REIT's ongoing operations rather than gains or losses from selling individual properties.
What is Nareit and what authority does its FFO definition carry?
Nareit is the National Association of Real Estate Investment Trusts, an industry association that publishes the widely used FFO definition. That definition is a voluntary industry standard rather than an accounting rule set by a standard setter or a regulator. Most listed REITs state that their FFO follows the Nareit definition, which is what makes FFO comparatively consistent across companies. A REIT is still free to present a differently calculated figure provided it labels and reconciles the measure clearly.
What is the difference between FFO and Core FFO or Normalized FFO?
Core FFO and Normalized FFO are company-defined variants that start from FFO and strip out items management considers non-recurring, such as debt extinguishment costs, merger expenses, or litigation settlements. Because the list of excluded items is chosen by each company, these variants are not comparable across REITs the way the Nareit FFO figure is. They can be useful for seeing an underlying run rate, but the adjustments should be read individually rather than accepted as a standardized cleanup.
How do operating partnership units affect FFO per share?
Many REITs are structured as an umbrella partnership, where the listed company owns most of an operating partnership and outside holders own the rest through operating partnership units. Those units are typically exchangeable into common shares. FFO per share is therefore usually presented on a diluted basis that includes the units in the share count and the corresponding income in the numerator. Comparing an FFO per share figure that treats units differently from another REIT can misstate the gap between them.