Finding synonyms for the phrase "dependents' allowance board" can be important if you are looking to mix up your word choice or avoid using the same phrase repeatedly. Similar phrases include "family support agency," "spouse and children's compensation board," and "dependents' assistance program." Other terms that could be used in this context include "family benefits bureau," "dependent care fund," or "family welfare office." Depending on the context and audience of your writing, some synonyms may be more appropriate than others. Ultimately, the goal is to convey the idea of an organization that provides financial support to family members of military personnel and other eligible groups.