Is Microsoft Stock Overvalued At 28x Earnings?

Microsoft (MSFT) runs the highest operating margin in its peer group and grows revenue faster than every rival there but one. Over the past twelve months its stock returned -0.5%, against 18.5% for the S&P 500 (SPY). At about $491.65 a share, it trades at 27.8 times earnings, second-richest in the group. Microsoft ranks first on profitability and fourth on the return, a gap worth explaining.

Is Microsoft Being Paid For What It Earns?

Alphabet (GOOGL) is the only company in this group that grew faster. Alphabet grew revenue 20.1% against Microsoft’s 17.8%, and did it on an operating margin of 33.1% against Microsoft’s 46.8%. Alphabet’s shares returned 41.6% over the same twelve months, against Microsoft’s -0.5%.

One thing separating them is what each stock already cost. Alphabet trades at 16.7 times earnings, the cheapest here; Microsoft at 27.8, behind only Apple (AAPL) at 37.0. Microsoft has begun to make some of that back, returning 22.1% over the trailing three months. A stock priced near the top of its group has to keep clearing a bar the cheapest name does not, and that starts with where its margin actually goes.

What Is Microsoft Spending Its Margin On?

That top-ranked margin is not showing up in the stock at the same rank. Over the trailing twelve months Microsoft turned $331.84 billion of revenue into $66.99 billion of free cash flow, roughly 20 cents on the dollar against a 46.8% operating margin. The gap is capital spending, and it is going into Azure.

Microsoft added 31 new data centers in fiscal Q4 2026, and capital expenditures on property and equipment were $35.8 billion in that quarter. Free cash flow was $19.6 billion, reflecting that higher spending, though $10.2 billion still went to shareholders. Calendar 2026 capital spending is expected to run about $175 billion.

Azure and other cloud services revenue grew 43% in fiscal Q4 2026, and management says demand still runs past the supply it can bring online. Paid Microsoft 365 Copilot seats passed 30 million, with net additions more than doubling quarter over quarter.

What Does Microsoft Have To Prove From Here?

Management has already set the test. It guides fiscal 2027 to another year of double-digit revenue and operating income growth, with full-year operating margins down less than one point even as capital spending grows again. Meet that target, and the infrastructure investments demonstrate self-funding capability even during deployment. Fall short, and the trailing twelve months of underperformance will look more structural than temporary.

A second risk is simpler. Capacity ordered for today’s demand arrives whether that demand holds or not, and the older businesses cannot cushion much: management guides Windows OEM and Devices revenue down in the high teens for fiscal 2027.

The operating record is settled. What is in dispute is the price. Our five-factor scorecard scores every stock on growth, profitability, stability, resilience, and valuation.

So Do You Pay Up For A Margin That Goes Into The Buildout?

Only if you think the margin survives the buildout. The key investment premise rests on whether Microsoft can maintain industry-leading operating profitability through an unprecedented capital investment cycle—a challenging but historically defended benchmark.

Two things make it easier to judge. Put Microsoft and its peers side by side on price, growth, margin and return, instead of one number at a time. Then remember that a peer group is one corner of one industry, and the Trefis High Quality Portfolio runs that comparison across the whole market, on cash generation, margins and balance-sheet strength. That portfolio has a track record of outpacing the three major indices.