The Simplifying Subcontracting Act aims to improve clarity and accessibility for small businesses seeking subcontracting opportunities by amending the Small Business Act. It mandates that prime contractors include a representation in their subcontracting plans, committing to communicate all subcontract solicitations in plain writing , as defined by the Plain Writing Act of 2010. This ensures that small business concerns can easily understand the terms and requirements of potential subcontracts. The bill further stipulates that this plain writing requirement must be flowed down and included in all subcontracts offering opportunities. If a prime contractor fails to comply, the Small Business Administration Administrator can require a new, plain writing solicitation within 30 days, with the Administrator also tasked to promulgate implementing regulations within 90 days of the Act's enactment.