Tax clearance reqt for Memphis rental - out of state investor

[Gloria Grotjan]

Need help and advice! I have had a single family home rental in Memphis since 2011 and never had a tax issue. I am an out of state investor. My LLC was recently revoked and put into inactive status because TN Dept of Revenue says I need to file a County and Business Tax Return. I need to provide a tax clearance letter in order to get a reinstatement certificate for my LLC. I need to understand what is involved in filing this and if this is something I can do myself or need to get a CPA or attorney involved? Trying to figure out least costly approach in resolving this. Any input much appreciated.