Please note: The Commission provides reminders of upcoming filing dates as a courtesy to help committees comply with the filing deadlines set forth in the Act and Commission regulations. Committee treasurers must comply with all applicable filing deadlines established by law, and the lack of prior notice does not constitute an excuse for failing to comply with any filing deadline.
Who must file
All principal campaign committees of current and former presidential candidates  must file either quarterly or monthly reports in 2021. Before a committee can stop filing with the FEC, it must file a termination report with the Commission. Committees must continue to file reports until the Commission notifies them in writing that their termination report has been accepted.
Methods of filing reports
Reports filed electronically must be received and validated by the Commission by 11:59 p.m. Eastern Time on the filing deadline.
For committees not required to file electronically, paper reports filed using registered, certified or overnight  mail must be postmarked by 11:59 p.m. Eastern Time on the filing deadline. Paper reports filed using first class mail must be received by the FEC by the close of business on the filing deadline.
Committee treasurers are responsible for both the timeliness and the accuracy of all reports. They may be subject to monetary penalties if reports are inaccurate or are not filed on time.
Administrative Fine Program
Under the Administrative Fine Program, political committees and their treasurers who fail to file their reports, or who file late, may be subject to civil money penalties up to $23,944 (or more for repeat late- and non-filers). 
Disclosure of lobbyist bundling activity
Principal campaign committees must file Form 3L if they receive two or more bundled contributions from any lobbyist/registrant or lobbyist/registrant PACs that aggregate in excess of $19,300 during the applicable reporting periods. Learn more about the lobbyist bundling disclosure requirements.
Change in filing frequency
Committees able to change their reporting schedule (for example, from monthly to quarterly) who wish to do so must notify the Commission in writing and may change their filing frequency no more than once per calendar year.
 Generally, an individual becomes a candidate for federal office (and thus triggers registration and reporting obligations) when his or her campaign exceeds $5,000 in either contributions received or expenditures made. If the campaign has not crossed the $5,000 threshold, it is not required to file reports.
 "Overnight mail" includes Priority or Priority Express Mail having a delivery confirmation, or an overnight service with which the report is scheduled for next business day delivery and is recorded in the service's online tracking system. Note that "Express Mail" as referred to in FEC regulations has been renamed "Priority Express Mail" by the USPS.
 Penalties for late- and non-filing of 48-Hour Notices are based on the amount of contributions received that are not timely disclosed. As a result, these penalties may exceed $23,944, even for first-time violations.