Qantas offers several bonuses (mostly frequent flyer points) for applying for some credit card programs and spending X amount within Y months with that card.

Most of these cards have annual fees.

I am looking for ways to maximize my frequent flyer points and the points these cards offer are immense and would offset the annual fee required. However, I plan to cancel it before the second year to avoid paying a second time for no additional rewards.

**If I do this multiple times, would it hurt my credit score or would it have any negative effects whatsoever for me?**

Also, one option for me is after I do spend an X amount and by the time I'd plan to cancel my card with onebank, I'd ask if they could offer to remove the annual fee which would remove the need for me to cancel the credit card program. **How often does this happen?**