Beneficial interests are a legal term that relates to the rights that a person has in property or assets. These interests can be held by individuals, groups or organizations and are often associated with the benefits that come from ownership or investment in a particular asset. Some synonyms for beneficial interests include advantageous ownership, profitable stake, valuable claim, favorable shares, and helpful shareholding. These phrases all convey the idea that the individual or group in question has a significant and positive relationship with the asset in question. This can refer to financial gain, asset appreciation, or other benefits related to ownership or investment.