Originally Posted by stifle

It's exactly what it says on the tin.

Premier banking costs £20 a month (the bank account), Avios fee is £12. The plus credit card costs £20 a month.

There are then two credits. If you have Avios bank account and credit card you get £5 back. The £20 a month for Premier Banking is waived for the first year. After this, if you hold £100,000 in Barclays savings and investments, or you pay in at least £3,400 a month (that is £6,250 less income tax and a bit more), the £20/month Premier banking fee will continue to be waived. If you don't, you'll be charged a further £20/month for the Premier banking, and it will eventually be downgraded to a normal bank account.

You'll still pay £20 a month for the credit card and £12-5=£7 for the Avios.