Legislative risk

Legislative risk is the possibility that changes in laws or government policy will hurt an investment's value. Congress can alter tax rates, impose new regulations, remove subsidies, or restrict an entire industry — and any of these actions can reshape a company's profitability or a security's after-tax return overnight.

Consider a few examples. A municipal bond's appeal rests largely on its tax-exempt interest; legislation trimming that exemption would immediately reduce demand for existing bonds. A tobacco or energy company could see margins compressed by new regulation. Even retirement accounts carry legislative risk, since contribution rules and tax treatment are set by statute and can change.

Legislative risk is considered a nonsystematic risk — it strikes particular industries, products, or tax structures rather than the market as a whole, so diversification across sectors and asset types helps manage it. It is closely related to, but distinct from, political risk, which usually refers to instability in foreign governments; legislative risk arises from the ordinary lawmaking process at home.

Securities exams like the SIE, Series 7, and Series 63 include legislative risk in their catalog of investment risks, alongside market risk, credit risk, and purchasing power risk. Be ready to identify it in a scenario — such as a proposed tax law change threatening municipal bond values — and to classify it as a diversifiable, nonsystematic risk.