Franklin would have been sidelined for the Hawks' first two matches of the finals series had he unsuccessfully challenged the charge at the tribunal on Tuesday night.
Franklin was reported for a late, high bump on Swans defender Nick Malceski in last Friday night's game at ANZ Stadium.
The level two offence brought a penalty of 225 demerit points, which was reduced to 168.75 with the early guilty plea.
The tribunal will not be required to sit on Tuesday night after all of the players charged during round 23 submitted early guilty pleas.
Essendon midfielder Jake Melksham will miss the Bombers' first two matches of 2014 after pleading guilty for striking Richmond's Daniel Jackson.
St Kilda star Leigh Montagna will miss one game next season after pleading guilty to striking Fremantle tagger Ryan Crowley.
Hawthorn captain Luke Hodge and GWS midfielder Toby Green ($1950 each) and West Coast Matt Priddis and Adelaide ruckman Sam Jacobs (both $900) have all been fined for making contact with an umpire.
Brisbane defender Matt Maguire accepted a reprimand and 93.75 carryover points for striking Geelong's Steve Johnson.
Melbourne's Jordie McKenzie was fined $2700 for being the instigator of the halftime melee in Sunday's clash with the Western Bulldogs.
Nine other players were fined $1200 apiece for being involved in the melee.