Although TNA is advertising Impact Wrestling as airing live on Spike TV, a decision was made to rarely go live according to a report by Dave Meltzer. The current taping format is taping two shows in one night and the plan going forward is to start filming the shows around 7:00 p.m. for events held in the Eastern time zone meaning it would air on around a one hour tape delay.

They tape the show without commercial breaks allowing them to get the show done in 90-100 minutes and then tape a second show from 8:40 until around 10:15 p.m. Both tapings in Pennsylvania two weeks ago were finished around 10:15 p.m. Going live with the first show including commercial breaks would push the second taping  to nearly 11:45 p.m. on a Thursday night.

Source: The Wrestling Observer Newsletter