How to Value REIT Stocks: FFO, AFFO, and NAV Explained

A REIT (real estate investment trust) is a company that owns income-producing real estate — apartments, warehouses, offices, data centers, shopping centers — and passes the rent through to shareholders. In exchange for paying essentially no corporate income tax, a REIT must distribute at least 90% of its taxable income as dividends. That legal structure explains almost everything unusual about REITs: the high dividend yields, the constant equity and debt raising (they retain very little cash to grow), and, most importantly for investors, the fact that the standard valuation toolkit gives badly wrong answers. Screen REITs by P/E and they all look expensive; screen them by EPS payout ratio and their dividends all look doomed. Neither is true.

This article is part of our series on sector-specific valuation, which explains why certain industries break the default valuation playbook described in how to value a stock. Companion guides cover bank stocks and cyclical stocks. Here we build the REIT toolkit from the ground up: FFO, AFFO, P/FFO multiples, net asset value (NAV), cap rates, and dividend safety.

Why EPS and P/E Mislead for REITs

Under GAAP accounting, a building is a depreciating asset. A REIT that buys a $500 million warehouse portfolio must write that cost down over decades through a depreciation charge that runs through the income statement every single quarter. For most companies, depreciation is a reasonable proxy for real economic wear — machines and vehicles genuinely lose value. For real estate, it is often fiction: well-located, well-maintained buildings frequently hold or gain value over time even as the accountants mark them toward zero. The result is that a REIT's reported net income — and therefore its EPS — dramatically understates the cash the business actually generates.

This is why comparing REITs on EPS or the P/E ratio is a category error. The income statement still matters — it shows rental revenue, operating expenses, and interest costs — but the bottom line needs surgery before it means anything. That surgery has a name: FFO.

FFO: The Industry-Standard Earnings Measure

Funds from operations (FFO) is the REIT industry's standardized fix for the depreciation problem, defined by Nareit and reported by virtually every listed REIT. It starts with net income, adds back real estate depreciation and amortization, and strips out gains or losses from selling properties. Property sale gains are removed for the same reason depreciation is added back: they are lumpy, one-off events that say nothing about the recurring earning power of the portfolio. A REIT that books a big gain flipping one building has not become a better landlord.

FFO is to a REIT what net income is to a normal company: the headline recurring-earnings figure that analysts forecast and multiples are built on. But FFO still is not the cash a REIT can actually hand to shareholders — for that, you need to go one step further.

AFFO: What the REIT Can Actually Pay You

Buildings may not depreciate the way GAAP assumes, but they are not free to maintain either. Roofs, elevators, HVAC systems, parking lots, and tenant fit-outs all require recurring capital spending just to keep the rent coming in. Adjusted funds from operations (AFFO) — sometimes called CAD, cash available for distribution — subtracts this recurring maintenance capex from FFO, along with accounting noise such as straight-line rent adjustments (GAAP smooths contractual rent escalators, recognizing revenue the REIT has not yet collected in cash) and non-cash stock compensation. AFFO is the REIT equivalent of free cash flow: the true recurring dividend capacity of the business.

Continuing the Corridor Industrial example: FFO of $200M, minus $30M of recurring maintenance capex, minus a $10M straight-line rent adjustment, gives AFFO of $160M — exactly $2.00 per share on 80 million shares. If Corridor pays a $1.70 dividend, the AFFO payout ratio is $1.70 ÷ $2.00 = 85%, a normal, sustainable level for a REIT. The logic mirrors free cash flow analysis for ordinary companies, and the raw inputs live in the cash flow statement rather than the income statement. One caution: unlike FFO, AFFO has no fully standardized definition, so check what each REIT includes before comparing figures across companies.

P/FFO and P/AFFO: The REIT Equivalents of P/E

Once you have FFO and AFFO per share, valuation multiples work the way P/E does everywhere else: price divided by FFO per share (P/FFO) or by AFFO per share (P/AFFO). The critical discipline is comparing within the same property type. A data center REIT at 22x FFO is not automatically more expensive than a suburban office REIT at 9x FFO — they have completely different rent growth, lease durations, tenant credit, and capex profiles. Fast-growing sectors with structural tailwinds command high-teens to twenties multiples; structurally challenged sectors trade in the single digits, and the discount is usually deserved.

P/AFFO is the stricter test because it penalizes property types that quietly consume cash in maintenance and tenant improvements — two REITs with identical P/FFO can look very different on P/AFFO. In practice, investors track long-run average multiples for each REIT and each property type, then ask whether today's multiple deviation is justified by fundamentals. Blue-chip names like Realty Income in net-lease retail or Prologis in industrial logistics tend to carry premium multiples versus smaller peers in the same sector, reflecting cheaper capital and stronger track records.

The NAV Approach: Valuing the Buildings Directly

Multiples value a REIT as a stream of earnings. Net asset value (NAV) values it as a pile of buildings. The idea: estimate what the property portfolio would fetch in the private real estate market, subtract net debt and preferred stock, and divide by shares outstanding. The key tool is the capitalization rate, or cap rate — the yield a property sells for in the private market, defined as net operating income (NOI) divided by property value. If comparable warehouses trade at a 6% cap rate, a portfolio producing $60M of NOI is worth about $1 billion. Cap rates are inversely related to value: lower cap rate, higher price.

Premiums and discounts to NAV carry information. A REIT trading above NAV can issue shares and buy buildings accretively — the market is effectively handing it cheap capital, which is why high-quality REITs often sustain premiums for years. A persistent discount signals the opposite: the market doubts management's NAV math, fears the property type (private cap rates may be stale), or distrusts capital allocation. A discount is only a bargain if the buildings are really worth the appraisal and management will not squander the gap. Either way, NAV — not GAAP book value — is the balance-sheet anchor for REITs.

Dividend Safety: Use the AFFO Payout Ratio, Not EPS

Nowhere does GAAP accounting cause more false alarms than in REIT dividend coverage. Financial sites routinely flag REITs as paying out more than 100% of earnings, implying the dividend is about to be cut. For a REIT, an EPS payout ratio above 100% is not merely tolerable — it is the normal, expected consequence of the depreciation distortion. The only payout ratio that matters is dividend per share divided by AFFO per share. Most healthy REITs run AFFO payouts of 70–90%; the mandatory 90% distribution applies to taxable income, which depreciation pushes far below cash flow.

This is the single most common REIT screening mistake: applying the standard dividend payout ratio logic built for industrial companies. A high dividend yield paired with a sub-90% AFFO payout is the profile of a durable income stock; the same yield with dividends exceeding AFFO is a countdown to a cut. For long-horizon income investors, REIT valuation also pairs naturally with the dividend discount model, using AFFO-funded dividend growth as the input.

Property Types and Leverage: Context Before Conclusions

REITs are not one sector but a dozen. Data center and industrial/logistics REITs ride structural demand from cloud computing and e-commerce: strong rent growth, high occupancy, and low cap rates (expensive buildings) — they earn high FFO multiples. Traditional office sits at the other extreme, fighting remote work and heavy re-leasing costs: low multiples, high and rising cap rates, and NAV estimates nobody fully trusts. Retail splits down the middle — well-located open-air and net-lease centers have proven resilient, while lower-tier enclosed malls keep shrinking. Residential, self-storage, healthcare, and towers each carry their own demand drivers. Never compare a multiple, a yield, or a cap rate across property types and call it a valuation.

Leverage is the second piece of context. REITs are structurally levered — paying out 90% of taxable income leaves little retained cash, so growth is financed with debt and equity. Sensible metrics: net debt to EBITDA (roughly 5–6x is typical for investment-grade REITs; north of 7x deserves scrutiny), interest coverage, the weighted average debt maturity, and the share of fixed-rate debt. Leverage is also why REITs are rate-sensitive twice over: higher rates raise interest expense as debt rolls over, and they push cap rates up, compressing NAV — as the Beacon Storage example showed, a one-point cap rate move cut NAV per share by 22%.

Red Flags When Valuing REITs

Dividends exceeding AFFO is the cardinal red flag: a REIT paying out more than it generates is funding its dividend with asset sales, debt, or new shares, and that arithmetic always ends the same way. Second, rising cap rates combined with heavy near-term debt maturities — falling property values just as large slugs of debt need refinancing at higher rates is how REITs get forced into dilutive equity raises or fire sales. Third, serial equity issuance below NAV: every share sold under asset value transfers wealth from existing holders to new ones, and management teams that do it repeatedly are growing their empire at your expense.

Watch also for sliding occupancy and weakening leasing spreads (the change in rent on new versus expiring leases) — these show up in operations quarters before they show up in FFO. Be suspicious of AFFO definitions that shrink "recurring" capex year after year while total capex keeps climbing, and of externally managed REITs whose fees scale with assets rather than per-share results. Finally, treat stated book value as nearly meaningless for REITs — decades of depreciation make it a floor-level artifact; NAV at market cap rates is the real balance-sheet benchmark.

Putting It Together: A REIT Valuation Checklist

A complete REIT verdict triangulates three views. First, earnings power: compute FFO and AFFO per share, check the trend, and compare P/FFO and P/AFFO against the REIT's own history and its property-type peers. Second, asset value: estimate NAV at realistic market cap rates, stress it one point higher, and ask what the premium or discount is telling you. Third, income durability: confirm the AFFO payout ratio sits comfortably below 100%, leverage is moderate, and debt maturities are staggered. When all three point the same direction — reasonable multiple, price near or below defensible NAV, well-covered dividend — you have a genuine candidate. When they conflict, the burden of proof is on the cheap-looking metric.

FairPriceIndex applies this same multi-angle philosophy across 37,000+ stocks: our valuation model blends a discounted cash flow analysis (50%) with relative valuation against sector peers (30%) and analyst consensus (20%), so a REIT is compared against REIT-appropriate benchmarks rather than a generic P/E yardstick. To put the FFO, AFFO, and NAV framework to work on real names — from net-lease stalwarts to data center landlords — browse our coverage and pull up any REIT's fair value estimate on the stocks page.