Regional Tax Base sharing has arisen as one tool to address urban sprawl and the fiscal disparities created and exacerbated by the phenomenon. This Co-Learning Plan focuses on Resiliency Planning and Financial Resiliency. It will examine the history of Michigan’s shrinking urban cores, introduce regional tax base sharing, present two case studies from Minneapolis-St. Paul, MN and The Meadowlands, NJ where regional tax base sharing has been implemented, introduce a fiscal disparities calculation that can be applied to any hypothetical municipality and discuss its use, provide talking points for proponents of regional tax base sharing, and include a roadmap detailing the policy and legal steps needed to adopt and implement regional tax base sharing in our state. This Co-Learning Plan aims to inform and stimulate discussion amongst residents, advocates, and policymakers of a new idea meant to address inequities.