After an MSB completes its initial registration, the form to renew its registration must be filed by December 31 of the second calendar year preceding the 24-month renewal period and is accomplished by filing the Registration of Money Services Business Form, FinCEN Form 107. Thereafter, registration renewal must be filed every 24 months by December 31.

31 CFR 1022.380(b)(2) (formerly 103.41(b)(2))