As noted below, the penalty for filing late is a percentage of the tax owed with the return. And even 100 percent of $0 is $0. However, this might not be the case for state taxes. That's not to say there aren't very good reasons for filing on time.
Latin Meaning: The name Felicity is a Latin baby name. In Latin the meaning of the name Felicity is: From 'felicitas', meaning happiness or good luck. A popular 16th century Puritan virtue name. Famous bearer: British actress Felicity Kendal.
Felicity /fe-lic-i-ty/ [4 sylls.] as a girls' name is pronounced fa-LISS-a-tee. It is of Old French and Latin origin, and the meaning of Felicity is lucky. From felicitas (see Felix). A virtue name first used in the 17th century.