I am a NE Philly resident and recently purchased a car from a reputable dealer in Swarthmore a few months ago. When I bought the car, I paid 6% sales tax. Now, a few months later, the dealer sent me a letter and bill stating that since I was a Philly resident, I was supposed to pay 8% sales tax (keep in mind, the dealer is out of Philly) and now I have to pay the remainder. Is that really the case? Philly residents pay Philly tax on out of city car purchases? Any info is appreciated. Thanks!