We hear about corporate tax breaks all the time, but this one may shock you: the NFL's office in New York is considered a non-profit for tax purposes. Critics say that's ridiculous and it's time to end it.

Lynda Woolard of New Orleans says she's a huge Saints fan and she doesn't want to punish her team -- which does pay taxes. But when she tells fellow fans about the non-profit status, they're shocked.

"They don't know this is going on so yeah they're usually surprised and then secondly they just find it to be outrageous. It just seems people are flabbergasted for the most part; they're like 'how is this possible?'"

Since the 1940s the League office (but not the NFL itself) has been considered a non-profit trade association -- promoting football. Oklahoma Senator Tom Coburn has a bill to end the tax exemption.

Woolard has an online petition with more than a quarter million signatures calling for an end to the exemption, even though she concedes taxing the League office wouldn't generate a ton of revenue. Woolard says it's about being fair to the NFL customer.

"You've got sports stadiums that are being subsidized by fans and non-fans alike and then some cities will block out their games if they don't sell enough tickets, even though those people have paid for that stadium to be there."