Satisfying Clients in Maryland, Washington DC & Northern Virginia  

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Are you looking for a simple accounting solution to help your business reach its potential? Then you have found it - 12oneLLC provides businesses with the compliant, efficient and cost effective accounting solutions that you need to succeed.


We utilize our 30 plus years of successful business experience to your advantage.  We work with dynamic business owners and clients that want to grow profitable businesses.


We specialize in the GovCon industry including compliance, cost treatment and pricing. Other business lines and startups that we support include professional service and consulting, technology and software, design and construction and product development. We also work with 501(c) tax-exempt nonprofit organizations, associations and foundations.





Strategic CFO and  

     Accounting Solutions

                          for New and Emerging Businesses