What is the 10-Year Treasury Yield? Definition, Formula, and Example
The 10-year Treasury yield is the annualized return investors demand to lend money to the U.S. government for ten years, and it serves as the global benchmark risk-free rate for pricing stocks, mortgages, and corporate debt.
What is the 10-Year Treasury Yield?
The 10-year Treasury yield is the market-determined interest rate on the U.S. government's 10-year note — the annualized return an investor earns by buying the note at its current price and holding it to maturity. It is the single most watched number in global finance: the reference "risk-free rate" in equity valuation models, the benchmark off which 30-year mortgages are priced, and the baseline for corporate borrowing costs worldwide. When people say "yields rose," they almost always mean this one.
How the Yield Is Calculated
The quoted yield is the note's yield to maturity (YTM) — the discount rate that equates the bond's price to the present value of its remaining cash flows:
Price = Σ [C / (1 + y)^t] + [Face / (1 + y)^T]
where C is the semiannual coupon payment, Face is $1,000 par, and y is the yield. Because the coupon is fixed at auction, the yield moves inversely to price: when investors sell the note, its price falls and the yield rises. A 10-year note with a 4% coupon trading at par yields 4.00%; if the price drops to $95, the yield rises to roughly 4.7%. The Treasury also publishes a daily par yield curve derived from the entire bill/note/bond market, interpolated so a synthetic "10-year" rate exists every day regardless of auction timing.
Worked Example: Discounting a Stock
Take MSFT trading at $420 with expected free cash flow of $30 per share next year, growing at 8% annually. In a simple Gordon growth model, fair value = FCF / (r − g). Using the 10-year yield plus a 4% equity risk premium as the discount rate:
- 10-year yield at 3.50%: r = 7.50%, value = 30 / (0.075 − 0.08) → growth exceeds the discount rate, so use a two-stage model — but directionally, the stock supports a high multiple
- 10-year yield at 5.00%: r = 9.00%, terminal multiple compresses sharply
This is the mechanical reason the 2022 rise in the 10-year from ~1.5% to ~4% crushed high-multiple tech: the Nasdaq fell roughly 33% that year as discount rates re-rated, with no change in underlying earnings.
When Traders Use the 10-Year Yield
Equity traders watch it as the gravity on valuations — every tick higher tightens the discount rate on future cash flows, hitting long-duration growth stocks hardest. Bond traders position on its direction directly via futures (ZN) or ETFs like TLT and IEF. Macro traders read it as a growth/inflation signal: a rising yield on strong data is benign; a rising yield on inflation fear is not. Its relationship to the 2-year yield defines the yield curve, whose inversion is the classic recession indicator. Mortgage rates, corporate bond spreads, and emerging-market capital flows all key off it.
Limitations and Common Misconceptions
The 10-year is not set by the Federal Reserve — the Fed controls the overnight federal funds rate; the long end is set by the market and can move opposite to Fed policy. "Risk-free" means free of default risk, not price risk: holders of 10-year notes lost roughly 17% in 2022, the worst year in the note's history. The yield also embeds a term premium — compensation for duration risk — which distorts its read as a pure expectations measure. Finally, foreign official buying and quantitative easing can pin the yield below where domestic fundamentals alone would put it.