3rd Rock from the Sun - Season 4 - Eps 12: Dick and Taxes
When Harry's boss Doug starts deducting income tax from Harry's paycheck, the Solomons realize that they have never filed a tax return and that they owe $9500 to the government. To combat this, they invent the 'brilliant' notion of lying on their tax return and Dick reworks the sums so that the government owes them several hundred thousand dollars. Sally attempts to help by setting up a failed home hairdressing business, but when women start arriving for haircuts, Harry and Tommy 'camp up' and take to the 'salon' to help. Lying doesn't work, however, and the Solomons are faced with an audit - and the threat of being exposed as aliens.
About 3rd Rock from the Sun

Title: 3rd Rock from the Sun
First Air Date: 1996-01-09
Last Air Date: 2001-05-22
Status: Ended
Rating: 7.5/10 (from 503 votes)
Language: EN
Seasons: 6
Total Episodes: 139
Network: NBC
Genres: Family, Sci-Fi & Fantasy, Comedy, Drama
Production Companies: Carsey-Werner Company
Synopsis
The high commander of an alien expedition lands on Earth -- what he considers to be the least-important planet -- in human form as Dick Solomon. Along for the ride are his alien compatriots Harry, Sally and Tommy -- who is the eldest of the group but is now angrily trapped in a teen's body.
Cast

John Lithgow
Dick Solomon

Kristen Johnston
Sally Solomon

Jane Curtin
Mary Albright

Joseph Gordon-Levitt
Tommy Solomon

Elmarie Wendel
Mamie Dubcek

French Stewart
Harry Solomon

Simbi Khali
Nina Campbell

Wayne Knight
Don Orville