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How to buy commercial notes
Open an account with a brokerage firm.
Commercial paper is rarely issued directly to individual investors, so you will need to do business with a broker in order to make a purchase. You can choose from a full-service brokerage firm or a no-frills online broker; both will allow you access to commercial notes.
If you don't already have an account with a stockbroker, consider avoiding commercial notes for a while. This type of debt is unsecured, and thus shouldn't be used as the foundation of an investment portfolio.