REIT Valuation: FFO, AFFO, and NAV Explained

Introduction

Real estate investment trusts are the one corner of the public markets where the standard valuation toolkit produces answers that are not merely imprecise but actively misleading. Run a REIT through a normal comparable companies screen and you will find price to earnings multiples above 50x, occasional net losses in years when the portfolio threw off plenty of cash, and enterprise value multiples that quietly ignore the capital a landlord must spend every year to keep buildings leasable. None of that signals a broken business. It signals an accounting convention colliding with an asset class it was never designed for.

The sector solved the problem by building its own vocabulary. Funds from operations and adjusted funds from operations replace net income as the earnings measure. Net asset value replaces the discounted cash flow as the intrinsic anchor, built from the bottom up using property level income and market capitalization rates. Real estate bankers, REIT equity analysts, and real estate private equity investors all speak in these terms, and interviewers in those groups expect a candidate to do the same from the first technical question.

This post works through the full stack. Why depreciation breaks GAAP earnings for property companies, how the Nareit definition of FFO is calculated from net income, which adjustments get you from FFO to AFFO, how price to FFO and price to AFFO function as trading multiples, and how a NAV is assembled from net operating income and cap rates. It closes with the leverage metrics the sector actually uses, how property type changes the analysis, and the questions that get asked in real estate and FIG interviews.

Before any formula, it helps to see the landscape. A REIT is a portfolio of leases, and the length, credit quality, and re-pricing frequency of those leases determine almost everything about how the assets are valued. A multifamily landlord re-prices its entire rent roll every year. A net lease REIT with 12 year contracts re-prices almost nothing. That single difference explains why the two trade at different cap rates, carry different leverage, and react differently to inflation.

The table below shows approximate ranges as of mid 2026, drawing on capitalization rate surveys published by the major brokerages. Treat these as orientation rather than precision, because pricing moves with the rates market and with asset quality within each type.

Two patterns matter for interviews. Longer leases with investment grade tenants behave like bonds, so they price at tighter cap rates and are more sensitive to moves in Treasury yields. Shorter leases give the landlord inflation protection but expose it to the economic cycle, which is why apartment and hotel valuations swing with the labor market while net lease valuations swing with the rates market.

Depreciation on an Asset That Appreciates

Under US GAAP, a building is depreciated on a straight line basis over a useful life management estimates, commonly 30 to 40 years for the shell and considerably less for building components and in-place lease intangibles. The familiar 27.5 and 39 year figures are the IRS recovery periods for tax depreciation, not GAAP. The accounting therefore assumes the asset marches steadily toward zero value. In practice, well located real estate held for a decade tends to be worth more at the end than at the start, and the land component underneath it does not deteriorate at all.

The result is a non-cash charge large enough to swamp reported earnings. For a typical equity REIT, real estate depreciation and amortization frequently exceeds net income by a factor of two or more. That is why the sector created its own metric in the first place. Nareit introduced the measure in 1991 precisely to neutralize what it described as the artificial nature of historical cost depreciation on real estate assets, and it has refined the industry definition of funds from operations several times since.

Where EBITDA and Net Income Multiples Mislead

Because depreciation sits below EBITDA, you might expect EBITDA multiples to solve the problem. They partially do, and EV/EBITDA is genuinely used in real estate, particularly for leverage analysis. But EBITDA has a second flaw in this sector: it ignores the recurring capital that property requires. Tenant improvement allowances, leasing commissions, roof replacements, and elevator modernizations are not optional. They are the price of keeping a building occupied, and they can consume a quarter of a landlord's cash earnings.

Net income multiples fail for the same reason, only worse, because the entire depreciation charge flows through. This is not a small technical footnote. It is why REITs are excluded from the standard multiple conventions covered in our breakdown of the most common valuation multiples in banking, and why a candidate who reflexively reaches for P/E in a real estate interview signals that they have never looked at a REIT supplemental package.

What Gets Added Back and Taken Out

Funds from operations starts at GAAP net income and makes three core adjustments. It adds back real estate depreciation and amortization, removes gains and losses on the sale of depreciable property, and adds back impairment write-downs on real estate. The logic is consistent throughout: strip out the items that reflect historical cost accounting rather than the ongoing economics of collecting rent.

The exclusion of property sale gains often confuses candidates. The reasoning is symmetry. If you are going to ignore the depreciation that artificially reduced the asset's book value, you must also ignore the gain that arises when the asset is sold above that artificially low book value. Otherwise the same accounting distortion shows up twice, first as an understated earnings figure and then as an overstated one.

Funds From Operations (FFO)

A REIT earnings measure defined by Nareit as net income calculated under GAAP, excluding gains and losses from sales of depreciable property, plus real estate depreciation and amortization, and adjusted for impairment write-downs. It is the sector's standard substitute for net income and the denominator in the price to FFO multiple. Nareit created the measure in 1991 and published clarifying white papers in 1995, 1999, 2002, and 2018.

Note what FFO does not remove. It does not add back interest expense, so FFO is an after-debt, equity level metric. It does not add back cash taxes on any taxable REIT subsidiary income. And it does not touch working capital. That equity level character is what makes price to FFO the right comparison rather than an enterprise value multiple, a distinction worth revisiting in our explainer on the difference between enterprise value and equity value.

FFO is a better earnings proxy than net income, but it remains an earnings measure rather than a cash flow measure. It assumes buildings require no capital to maintain, which is obviously false. A 30 year old suburban office tower and a two year old distribution warehouse can post identical FFO while requiring wildly different reinvestment to hold their rent rolls together.

Recurring Maintenance Capex and Leasing Costs

AFFO exists to close that gap between accounting earnings and distributable cash. The largest adjustment is recurring capital expenditure, sometimes called maintenance capex or second generation capex, which covers the spending required to keep existing space leasable rather than to expand the portfolio.

In practice the deduction bundles three categories:

The split between recurring and growth capex is a judgment call, and it is precisely where management teams have discretion. A REIT that classifies a large redevelopment as growth capex reports higher AFFO than a peer that treats the same spend as maintenance. Analysts who cover the sector track this closely, because it determines whether a stated dividend is genuinely covered.

The Straight Line Rent Adjustment

Under GAAP, a lease with contractual rent escalations is recognized evenly across the lease term. A tenant paying $100 in year one rising to $130 in year ten produces roughly $115 of reported revenue every year. In the early years the landlord books more revenue than it collects, creating a straight line rent receivable on the balance sheet and a non-cash component inside net income and inside FFO.

AFFO removes it. The adjustment is usually a deduction for growing portfolios with long leases, and it can reverse to a benefit late in a lease term. Alongside it, analysts typically add back non-cash stock compensation and the amortization of deferred financing costs, and remove the amortization of above and below market lease intangibles recorded in a prior acquisition.

Step One: Building FFO

Take an industrial REIT reporting the following for the trailing twelve months, with 200 million diluted shares outstanding and a share price of $32.00.

The arithmetic runs $180 million plus $310 million minus $45 million plus $20 million, giving Nareit FFO of $465 million. Divided across 200 million shares, FFO per share is $2.33. Against a $32.00 share price, the REIT trades at roughly 13.7x FFO.

Step Two: Building AFFO

Now push through to cash earnings. From FFO of $465 million, deduct recurring maintenance capex of $70 million, deduct second generation tenant improvements and leasing commissions of $35 million, deduct the straight line rent adjustment of $18 million, and add back non-cash stock compensation of $12 million.

That produces AFFO of $354 million, or $1.77 per share, which puts the stock at 18.1x AFFO. The gap tells the real story: AFFO is only 76% of FFO, meaning roughly a quarter of reported funds from operations is consumed keeping the existing portfolio competitive. If this REIT pays an annual dividend of $1.50 per share, the AFFO payout ratio is 85%, which is high but coverable. On an FFO basis the same dividend would look comfortably covered at 64%, which is exactly why AFFO is the better dividend safety test.

Both multiples are equity multiples, quoted per share against price, and both are normally used on a forward basis:

Price to FFO is the sector's headline multiple and the number quoted in most sell-side notes and pitch pages. Price to AFFO is the quality-adjusted version and the one that correlates better with dividend capacity. Analysts also invert AFFO into an implied cash yield, comparing it against the ten year Treasury, which sat near 4.6% in late July 2026. A REIT yielding less than governments on a cash earnings basis is making an aggressive growth claim.

Two REITs in the same property type routinely trade several turns apart on both measures. The drivers are consistent:

REIT technicals are their own dialect of valuation: Work through real estate, FIG, and core valuation questions with full written answers, start practicing interview questions for free and find the gaps before a real estate banker does.

What a Cap Rate Actually Is

A capitalization rate is the unlevered yield on a property, calculated as one year of net operating income divided by property value. It is the real estate equivalent of an inverted multiple: a 5% cap rate is 20x NOI, and an 8% cap rate is 12.5x NOI.

Net operating income is rental revenue less property level operating expenses, before interest, before depreciation, and before corporate overhead. A building generating $5 million of NOI that trades for $100 million transacted at a 5.0% cap rate.

Capitalization Rate (Cap Rate)

The unlevered annual yield on a commercial property, equal to net operating income divided by property value. Lower cap rates mean higher valuations and typically reflect stronger locations, longer leases, or better tenant credit. Cap rates expand when interest rates rise or when perceived risk increases, and compress when capital competes for scarce assets.

How Cap Rates Move With Interest Rates

Cap rates are not set by a formula, but they behave like a spread product. Investors broadly require a premium over the risk free rate to compensate for illiquidity, operating risk, and capital intensity, so cap rates tend to widen when Treasury yields rise. That relationship is loose and lagged rather than mechanical, because transaction pricing adjusts slowly and because rent growth can offset a higher discount rate.

The 2022 to 2024 tightening cycle demonstrated the effect at scale. As benchmark yields rose, cap rates expanded across every property type, values fell, and public REITs traded to deep discounts against appraised private market values. By the second half of 2025 the repricing had largely run its course, and CBRE's 2026 capital markets outlook described cap rates as having stabilized across the major sectors, with most institutional investors treating the cycle peak in yields as behind them.

Building a NAV Step by Step

Net asset value takes the property level view. You capitalize forward NOI at a market cap rate to value the operating portfolio, add the assets that generate no current NOI, then subtract everything owed. The structure is a sum of the parts exercise, and the method mirrors the segment-by-segment logic in our guide to sum of the parts valuation.

Continuing with the same industrial REIT, assume forward twelve month NOI from the stabilized portfolio of $620 million and a market cap rate of 5.75%:

Against the $32.00 share price, the REIT trades at roughly an 11% discount to NAV. Run the sensitivity and the fragility of the output becomes obvious. Widen the cap rate by just 25 basis points to 6.00% and portfolio value falls to $10,333 million, dropping NAV per share to $33.77, a 6% decline. Debt does not shrink alongside the assets, so leverage amplifies every cap rate assumption. In a real estate interview, showing that you understand this asymmetry is worth more than the arithmetic itself.

Premium and Discount to NAV

Because the public market re-prices REIT shares every second while private appraisals move quarterly, listed REITs frequently trade away from their underlying property value. That spread is a genuine signal rather than noise.

NAV Premium

The amount by which a REIT's share price exceeds its estimated net asset value per share, expressed as a percentage. A premium implies the public market values the portfolio above private market pricing, which lowers the cost of equity and makes acquisitions accretive. A discount implies the opposite and often pushes management toward asset sales and buybacks.

The strategic consequences are direct. A REIT trading at a premium can issue equity above the value of the buildings it owns and buy more buildings accretively, which is why premium-rated REITs grow externally. A REIT trading at a wide discount cannot issue equity without destroying value, so it sells assets, repurchases shares, or eventually becomes a take-private target for a private equity buyer that sees the same gap.

Sector dispersion as of mid 2026 illustrates the point vividly. The average REIT discount to NAV had narrowed to roughly 9% by June 2026 after several years of much wider gaps, but the aggregate hides the spread: office REITs carried the sector's steepest discount, a median near 34% in January 2026 that had narrowed to roughly 20% by mid-year, while health care names traded at a median premium near 28% and data centers had only just crossed from a discount into a small premium. Same asset class, opposite capital access.

Valuation frameworks in one place: Download the 160-page PDF covering DCF, LBO, comps, and sector-specific methods, access the IB Interview Guide and work through the technical set systematically.

The 90 Percent Distribution Rule

A REIT is a tax election, not a business model. To qualify, an entity must invest predominantly in real estate, derive most of its income from rents, mortgage interest, or property sales, and distribute at least 90% of its taxable income to shareholders each year. In exchange it deducts those dividends and effectively avoids entity level corporate tax. The mechanics and the qualification tests are summarized clearly in the SEC investor bulletin on REITs.

Note the subtlety that trips candidates: the 90% test applies to taxable income, not to FFO or AFFO. Because depreciation reduces taxable income sharply, many REITs distribute far more than 90% of taxable income while still paying out less than their AFFO. That is why dividend coverage is tested against AFFO rather than against the tax rule.

Leverage Metrics That Matter in Real Estate

Real estate is a leveraged asset class, so credit metrics carry unusual weight in the equity story. Three appear in nearly every REIT supplemental:

Debt to gross asset value is the metric candidates get wrong most often. Using GAAP net book value understates the denominator badly, because accumulated depreciation has already written the buildings down, so leverage looks far worse than it is. Using undepreciated cost or a market value estimate is the correct treatment.

The FFO to AFFO gap is not uniform, and neither is the reliability of a NAV. Net lease, industrial, and self storage portfolios carry modest recurring capex, so AFFO tracks close to FFO and a NAV can be built from one cap rate applied to a homogeneous rent roll. Office is the opposite: between tenant improvements, leasing commissions, and building capex, an office REIT can convert less than 60% of FFO into AFFO in a heavy leasing year, which is why office FFO multiples that look cheap frequently are not. Residential sits in the middle, since annual leases reset rents to market but turnover and refurbishment costs recur. Hotels sit outside the framework entirely, because rooms re-price nightly and the business behaves like an operating company rather than a landlord.

FFO also rests on the premise that buildings do not really wear out, which holds far better for a warehouse than for specialized assets. Data centers carry heavy investment in power, cooling, and electrical infrastructure that genuinely depreciates and needs replacing long before the shell does. Senior housing and medical facilities carry operating businesses inside the real estate, with staffing, occupancy, and reimbursement risk no single cap rate captures. FFO therefore deserves more skepticism in equipment-heavy and operator-driven sectors, and AFFO deserves more weight. Analysts covering healthcare and data center names often run an operating company style EBITDA analysis alongside the REIT metrics, in the same spirit that a specialized financial institution needs its own framework, as covered in our walkthrough of how to value a bank.

The Questions That Actually Come Up

Real estate groups, real estate private equity funds, and some FIG teams test this material directly. The most frequent openers are predictable:

The strongest answers connect the pieces rather than reciting them. Explaining that FFO exists because depreciation is fictional for appreciating assets, that AFFO exists because FFO ignores real reinvestment, and that NAV exists because public prices detach from private values gives you one coherent narrative instead of three memorized definitions.

Mistakes That Sink Candidates

The recurring errors are consistent enough to list. Treating FFO as cash flow. Forgetting that gains on property sales come out of FFO rather than going in. Calculating a NAV and then forgetting to subtract preferred equity, which is a claim ahead of common. Applying one blended cap rate to a portfolio spanning several property types and markets. Measuring leverage against depreciated book assets. And quoting a discount to NAV without being able to explain what the market might be pricing that the appraisals are not.

If you are asked to present a full REIT valuation, layer the methods rather than picking one, and show the range from FFO multiples, AFFO multiples, NAV, and a dividend discount model together. That presentation format is standard practice and is covered in our guide to building a football field valuation chart.

REIT valuation looks like a specialist topic until you see the logic underneath it. Every metric in the sector exists because a standard one failed. FFO exists because net income is distorted by an accounting rule written for machinery rather than buildings. AFFO exists because FFO went too far in the other direction and pretended buildings need no reinvestment. NAV exists because the public market and the private market can disagree for years about what the same portfolio is worth, and someone has to quantify the gap.

A candidate who can calculate FFO from a net income line, push it through to AFFO, build a NAV from NOI and a cap rate, and then explain what an 11% discount to NAV implies about a management team's options is demonstrating something more valuable than memorization. They are showing that they understand why a valuation framework exists at all, which is the same instinct that separates strong analysts from spreadsheet operators in every sector.