How fast can an MC be reactivated after revocation?
It depends on the cause and on FMCSA. Once the cause is cured (insurance filing on record, BOC-3 on file, penalties paid), your reinstatement is submitted to FMCSA promptly; FMCSA controls how long its review takes. Safety-related revocations and failed new-entrant audits take longer because corrective action has to be done and reviewed by FMCSA first.
Insurance-lapse revocation: bind coverage and have the insurer file the BMC-91 or BMC-91X with FMCSA, then pay the $80 reinstatement fee (49 CFR §360.3T(f)(52)) and submit the reinstatement request. FMCSA controls the timing of its review.
BOC-3 lapse revocation: have a registered process-agent provider file a new BOC-3 with FMCSA, then submit the reinstatement request with the $80 fee.
Safety-related revocations (an Unsatisfactory rating or a failed new-entrant audit): the carrier documents corrective action for each cited deficiency and FMCSA reviews it (49 CFR 385.17, 385.319). FMCSA controls how long that review takes.
For revocations stemming from several compliance gaps at once, the recovery path may require fixing each issue before the reinstatement can go through. Carriers in this situation may want an experienced compliance consultant or transportation attorney to coordinate the work.