Direct Answer
AFFO (Adjusted Funds From Operations) is FFO further adjusted to subtract the recurring capital expenditures a REIT needs to maintain its properties, and sometimes other non-cash items like straight-line rent adjustments. The goal is to more closely approximate the cash actually available for distribution to shareholders than FFO alone provides.
Unlike FFO, which follows a standardized definition published by Nareit, AFFO has no single universally standardized definition, calculations vary somewhat by company. Comparisons across REITs should always note what specific adjustments each company includes before treating their AFFO figures as directly comparable.
AFFO is one piece of REIT analysis. For how it fits alongside FFO, 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
- AFFO starts from FFO, then subtracts recurring capex. The capital spending needed just to maintain existing properties, not capex that grows the portfolio, is backed out because it represents a real cash cost that reduces what's actually distributable.
- Some REITs also adjust for non-cash items like straight-line rent. Straight-line rent recognizes average lease revenue evenly over a lease term even when actual cash rent received varies year to year, so some companies remove that non-cash portion when calculating AFFO.
- AFFO has no single standardized formula. Nareit standardizes FFO; no comparable body enforces one required AFFO calculation, so the specific line items subtracted vary by company.
- Cross-REIT AFFO comparisons need a footnote check. Because definitions vary, comparing AFFO or AFFO-derived multiples across REITs is only meaningful once you've confirmed what each company's adjustments actually include.
- AFFO is commonly used for dividend-coverage and valuation context. Analysts compare AFFO per share to the declared dividend per share, and use metrics like price-to-AFFO, though the underlying inconsistency in AFFO definitions carries through to any ratio built on it.
How Is AFFO Calculated?
Starting point: FFO
AFFO is built on top of FFO (Funds From Operations), the Nareit-standardized metric REITs use in place of GAAP net income because GAAP depreciation on real estate can understate a REIT's actual operating performance, real property often holds or appreciates in value rather than steadily wearing down the way a standard depreciation schedule assumes. FFO adds real estate depreciation and amortization back to net income and removes gains (or losses) on property sales, since those are one-time events tied to the properties sold rather than the ongoing operating portfolio.
The AFFO adjustment: recurring capital expenditures
AFFO takes FFO a step further by subtracting recurring capital expenditures, the capital spending required to keep existing properties operating and competitive, such as routine building maintenance, tenant improvements on lease renewals, and leasing commissions. This spending is real and recurring, even though FFO's depreciation add-back treats all depreciation as non-cash. By backing out this recurring capex, AFFO is intended to more closely approximate the cash a REIT actually has available to distribute to shareholders, rather than the cash it appears to generate before accounting for the ongoing cost of maintaining its property portfolio.
Other adjustments some companies include
Beyond recurring capex, some REITs also back out other non-cash items when calculating AFFO, such as straight-line rent adjustments, the difference between the rent recognized on an even, averaged basis over a lease term under GAAP and the actual cash rent collected in a given period. Because there is no single universally standardized AFFO definition, which of these additional items a company includes, and how it defines "recurring" versus growth-oriented capital expenditures, varies by company. This is the central practical caveat with AFFO: two REITs can both report an "AFFO" figure that reflects meaningfully different sets of adjustments.
Worked Example: From Net Income to AFFO
Hypothetical example, for education only. Figures are illustrative and do not represent any real company.
- Start with net income: A hypothetical REIT reports GAAP net income of $40 million for the year.
- Calculate FFO: Add back real estate depreciation and amortization of $65 million, then subtract a $5 million gain recognized on the sale of a property during the year. FFO = $40M + $65M − $5M = $100 million.
- Subtract recurring capital expenditures: The REIT spent $18 million on routine building maintenance, tenant improvements, and leasing commissions needed to maintain its existing properties (not expansion or acquisition spending).
- Subtract the straight-line rent adjustment: This REIT's calculation also removes $2 million of non-cash straight-line rent recognized during the year that was not yet collected in cash.
- Calculate AFFO: AFFO = $100M − $18M − $2M = $80 million.
- Convert to a per-share basis: With 50 million shares outstanding, FFO per share is $100M ÷ 50M = $2.00, and AFFO per share is $80M ÷ 50M = $1.60.
In this hypothetical, AFFO per share of $1.60 is lower than FFO per share of $2.00 because of the recurring capex and straight-line rent adjustments. A different REIT covering the same $100 million of FFO might define recurring capex more narrowly, or skip the straight-line rent adjustment entirely, and arrive at a higher reported AFFO from an identical FFO starting point, illustrating why the specific adjustments matter when comparing AFFO figures across companies.
How AFFO Is Used
Analysts and investors commonly use AFFO in two related ways. The first is assessing dividend coverage: comparing a REIT's AFFO per share to its declared dividend per share gives a sense of whether the distribution is being paid from cash the business is generating from ongoing operations, versus being funded from other sources such as debt or asset sales. The second is valuation: metrics like price-to-AFFO or AFFO yield (AFFO per share divided by share price) are sometimes used alongside, or instead of, FFO-based multiples, on the reasoning that AFFO is intended to more closely approximate distributable cash.
Because AFFO calculations vary by company, any ratio built on AFFO, dividend coverage, price-to-AFFO, AFFO yield, inherits that same variability. A coverage ratio calculated from a narrowly-adjusted AFFO figure is not directly comparable to one calculated from a more conservatively-adjusted AFFO figure at a different REIT, even if both companies label the line item "AFFO."
Limitations and Common Mistakes
Treating AFFO as a standardized, GAAP-equivalent figure
FFO has a standardized Nareit definition that most REITs follow closely, which makes FFO comparisons reasonably consistent across companies. AFFO does not have that same standardization. Treating a company's reported AFFO the way you would treat a standardized GAAP or Nareit-FFO figure, assuming it means exactly the same thing everywhere, is a common mistake.
Comparing AFFO across REITs without checking the adjustments
Because there is no single universally standardized AFFO definition, comparisons across REITs should note what adjustments each company includes. Two companies' reported AFFO-per-share figures can differ meaningfully not because their underlying real estate performance differs, but because one company defines recurring capital expenditures more broadly, or includes a straight-line rent adjustment the other omits.
Confusing recurring capex with growth capex
AFFO subtracts recurring capital expenditures, spending needed to maintain existing properties, not capital spent on acquisitions, ground-up development, or major redevelopment intended to grow the portfolio. Some companies' disclosures make this distinction clearly; others provide less detail, making it harder for an outside analyst to verify how a reported recurring-capex figure was determined.
Assuming AFFO per share exceeding the dividend means the payout is automatically safe
AFFO coverage of the dividend is one useful input, but it depends on the reliability of the underlying AFFO calculation itself. A REIT using a narrower definition of recurring capex will show higher AFFO, and therefore higher apparent dividend coverage, than an otherwise identical REIT using a broader definition, without any actual difference in the safety of the payout.
FAQ
What is AFFO in REIT analysis?
AFFO (Adjusted Funds From Operations) is FFO further adjusted to subtract the recurring capital expenditures a REIT needs to maintain its properties, and sometimes other non-cash items such as straight-line rent adjustments. It is intended to more closely approximate the cash actually available for distribution to shareholders than FFO alone.
What is the difference between FFO and AFFO?
FFO has a standardized definition published by Nareit: net income plus real estate depreciation and amortization, minus gains on property sales, plus other specified adjustments. AFFO starts from FFO and subtracts recurring capital expenditures needed to maintain the properties, and sometimes non-cash items like straight-line rent. Because AFFO has no single universally standardized definition, the specific adjustments a company makes can vary, unlike Nareit's FFO standard.
Why isn't AFFO standardized the way FFO is?
Nareit publishes a standardized FFO definition that most REITs follow closely. No comparable industry body has established a single required AFFO formula. Individual REITs decide which items count as recurring versus growth capital expenditures, and whether to include adjustments like straight-line rent, so AFFO calculations vary somewhat by company.
Why do REITs report AFFO instead of relying on GAAP net income?
GAAP net income includes depreciation expense on real estate, which can understate a REIT's actual operating performance because real property often holds or gains value over time rather than steadily losing it the way GAAP depreciation schedules assume. AFFO backs out that non-cash depreciation and then subtracts real, recurring cash costs of maintaining the properties, aiming to approximate the cash available for distribution to shareholders more closely than GAAP earnings.
Can you compare AFFO across different REITs directly?
Only with caution. Because there is no single universally standardized AFFO definition, one REIT's AFFO may subtract more or fewer categories of recurring capital expenditure than another's, or handle straight-line rent adjustments differently. Comparisons across REITs should note what adjustments each company includes before treating AFFO or AFFO-derived metrics as directly comparable.
What is AFFO used for?
AFFO is commonly used to assess a REIT's dividend coverage (comparing AFFO per share to the declared dividend per share) and to calculate valuation metrics such as price-to-AFFO or AFFO yield. Because it aims to approximate cash available for distribution. It is often viewed as a more relevant gauge of dividend sustainability than GAAP net income or unadjusted FFO alone.
What is straight-line rent and why do some REITs remove it from AFFO?
Straight-line rent is an accounting convention that spreads the total contracted rent of a lease evenly across its term, even when the actual cash rent steps up over time. In the early years of a lease that produces reported revenue above the cash collected. Because AFFO aims to approximate cash available for distribution, many REITs subtract the straight-line rent adjustment so the figure reflects rent actually received rather than the smoothed accounting amount. Companies differ on whether they make this adjustment, which is one reason AFFO definitions vary.
What is the difference between AFFO, CAD, and FAD?
They are overlapping labels for the same general idea rather than three separate standards. AFFO means adjusted funds from operations, CAD means cash available for distribution, and FAD means funds available for distribution. Each starts from FFO and subtracts recurring maintenance capital and various non-cash items, but the specific subtractions differ by company and sometimes by which label the company chooses. None carries a governing definition, so the practical step is reading the reconciliation table rather than assuming a shared meaning behind the acronym.
Where does a REIT actually publish its AFFO reconciliation?
AFFO is a non-GAAP measure, so it appears in a quarterly earnings release and in the supplemental information package a REIT posts to its investor relations site rather than inside the audited financial statements. SEC rules on non-GAAP measures require a reconciliation to the closest GAAP figure when the measure is presented in a filing or release. That reconciliation table is where the specific adjustments become visible, and it is the document to read before comparing one REIT AFFO figure against another.
References
Disclaimer
This article is for educational and informational purposes only and does not constitute personalized investment, financial, or legal advice. AFFO calculations and disclosure practices vary by company and can change over time. Always verify current figures and methodology directly from a REIT's SEC filings before relying on them. Trading involves risk, including the possible loss of principal.