Nationally the league sits below the A-League and above the Tasmanian regional championship competitions, although no promotion or relegation exists between any of these leagues. Football Federation Tasmania have expressed an interest in a possible future promotion/relegation between the T-League and regional premierships in a similar manner to the current English Conference National competition with supporters suggesting a simple system of replacing the lowest Northern or Southern based clubs with the winner of the corresponding Northern Championship and Southern Championship.
The league consists of eight clubs geographically spread throughout Tasmania. Every club plays each other three times: Home and Away with a third game Home or Away for a total of 27 games each per season. The team on top of the table is considered the league champion and qualifies to play in the National Premier Leagues finals series against the champions of the other states.
The top teams in the league also qualify for a Tasmanian end of season finals series. The winner of the local finals series is awarded the Victory Cup. In 2013 and 2014 the top four teams played off for the Victory Cup. In 2015 the Victory Cup finals series has been expanded to include the top six T-League teams as well as the champions of the Northern Championship and Southern Championship.
The initial clubs were awarded licenses for league membership for three season between 2013-2015. In 2015 the FFT Board analysed the clubs on and off pitch. Based on this analysis six of the eight clubs in the T-League were offered licenses for an additional three seasons between 2016-2018. Glenorchy Knights and Launceston City were required to reapply for membership and compete with other clubs for the final two positions in the league in 2016.Riverside Olympic, University, Clarence and New Town Eagles also applied for the two positions in addition to Glenorchy and Launceston City. In August 2015 it was announced that Clarence United and Launceston City had been awarded the available licenses between 2016–18, meaning that Glenorchy Knights will return to lower leagues starting in 2016.