The Precious Metals Parity Act would change tax rules for regulated investment companies, which are investment funds that distribute most of their income to shareholders. Currently, these companies can treat income from certain sources like dividends and foreign currencies as "qualifying income" for tax purposes, but income from precious metals is not included in this category. The bill would add precious metals to the list of qualifying income sources, putting them on equal footing with these other assets. This change would apply to tax years beginning after the bill is enacted and primarily affects investment companies that hold or trade gold, silver, and other precious metals. The legislation aims to create tax parity between precious metals and other comparable investment income types.