Tax Center will open their doors beginning February 20-February 28 for Active Duty Military and Dependents who work on Fort Belvoir only. March 4-April 15: Monitor website for changes in eligibility criteria Clients will be seen on a “first-come, first-serve” basis, however, Active Duty Military and their Dependents will have priority. Automated Tax Center Phone Line: 703-805-8736 Visit the Fort Belvoir Tax Center Facebook Page for more information: tax.asp