Investor Corner/Start here/Foundations
1.1.8 Risk-Free Rate
The risk-free rate is the return available with essentially no risk of loss, usually from short-term government securities. Every other investment is implicitly judged against it.
The baseline everything else is measured against
No investment exists in isolation. Before accepting any risk at all, an investor could simply hold a short-term government security and earn the risk-free rate, generally treated as free of default risk because it is backed by the government. Any investment that carries more risk than that has to justify itself by offering a return above this baseline, or there is little reason to take the extra risk.
This is why the risk-free rate sits quietly underneath most of investment theory. It is the floor. Everything else is priced as the floor plus some extra return for the extra risk being taken.
Why it moves, and why that matters
The risk-free rate isn't fixed. It moves with monetary policy and the broader interest-rate environment. When it rises, the baseline everything else is compared against rises too, which can make previously attractive returns on riskier assets look far less compelling by comparison, even if nothing about those assets has actually changed.
The practical takeaway
When judging whether a return looks attractive, the honest comparison is never against zero. It's against the risk-free rate available at the time, plus a reasonable premium for whatever additional risk that investment actually carries.
How PriLytics helps. PriLytics lets you compare your portfolio's actual performance against a benchmark over any period, so you can judge your returns against a real baseline rather than in isolation. Compare against a benchmark.