Va. Code Ann. § 58.1-3107

Each commissioner of the revenue shall obtain full and complete tax returns from every taxpayer within his jurisdiction who is liable under the law to file such return with him for all taxes assessed by his office. This duty of the commissioner of the revenue to obtain such returns shall in no manner diminish the obligation of the taxpayer to file the required returns without being called upon to do so by the commissioner of the revenue or any other officer.