A higher interest rate raises the discount rate used to value a company's future cash flows, and a higher discount rate lowers the present value assigned to every dollar a business is expected to earn later on. The effect is largest for companies whose profits are weighted towards the distant future, which is why fast-growing stocks tend to move by more than slow, steady ones when interest rates change.
How the discount rate is calculated
A stock valuation built on discounted cash flow starts by estimating the cash a business will generate in each future year, then converts each of those future amounts into today's money. The conversion uses a discount rate: a percentage that treats a dollar received further in the future as worth less than a dollar received now, both because money available sooner can be reinvested and because waiting longer carries more risk. The discount rate itself is usually built from a risk-free rate, tracked from government bond yields, plus a premium for the extra risk of holding equity rather than lending to a government. When the risk-free rate rises, that increase feeds straight into the discount rate used across the market, and the effect compounds: a cash flow expected ten years out is discounted at the new, higher rate ten times over, while a cash flow expected next year is discounted at that rate only once.
Why stocks fall when rates rise, and why growth stocks move most
A company's modelled value is the sum of all its discounted future cash flows. For a mature, slow-growing business, most of that value sits in cash flows expected within the next few years, so a higher discount rate erodes only a modest share of the total. For a company priced substantially on growth it has not yet delivered, more of the modelled value sits in cash flows forecast five, ten or more years out, and those are the cash flows the compounding effect hits hardest. This is distinct from how a higher interest rate affects a borrower or a bank. A company carrying debt faces a higher interest expense directly, which shows up as a cost in its income statement rather than in the discount rate applied to its valuation; a bank, by contrast, can see wider margins between what it pays depositors and what it earns on loans when rates rise. The discounting effect works through valuation models, not through any single line in a company's own accounts, which is why even a business with no debt at all can see its modelled value move when rates change.
NVIDIA's valuation under a higher discount rate
Over the trailing twelve months to its 2027 fiscal second quarter, NVIDIA's revenue grew 83.4% year over year, a pace the underlying figures do not explain beyond the reported growth itself. Fundamentalytics' own two-stage discounted cash flow model does not extrapolate that full figure forward: the model's base case assumes a first-stage growth rate of 20.0%, a deliberate cap applied because growth at the recent pace is unlikely to hold unchanged for five years running.
Even after that cap, NVIDIA's modelled value stays sensitive to the discount rate used. Holding every other assumption fixed, raising the discount rate in the model by one percentage point lowers the modelled value per share for NVIDIA by 16.0%. That single input, the rate at which future cash flows are converted into today's money, moves the model's output by double digits on its own, which is the practical illustration of why a company priced largely on future growth carries meaningful interest-rate sensitivity inside a valuation model. These are model values under stated assumptions, not a comparison with the share price.
Limitations of this reading
This is a sensitivity reading inside one valuation model, not a forecast of how a share price would move if rates changed: actual prices reflect factors a discounted cash flow does not capture, including liquidity, sentiment and competing uses of capital. The 83.4% revenue growth figure used above is a trailing-twelve-month number reflecting recent demand that the underlying filing data does not break down by cause, so it describes the recent past rather than a guide to future growth. The model's own clamp on first-stage growth, capping the assumption at 20.0% even when trailing growth runs far above that, is one way a model like this tries to avoid simply projecting a recent surge forward across five years; a reader comparing model outputs across different companies should check what growth assumption and what discount rate each one uses before comparing the results. For the full set of figures behind NVIDIA's model, including its trailing-twelve-month revenue, margins and free cash flow, the NVIDIA company page carries the complete history.
Where to see this on Fundamentalytics
Fundamentalytics sets out the prevailing interest-rate and broader economic backdrop that feeds into discount-rate assumptions on /economy/, and explains in full how the discounted cash flow model is built, including how the discount rate itself is calculated for each company, on /valuation-methodology/.
