Gotta disagree with Peter here.
There are in fact 2 seperate provisions that determine the effective date – the new one (CTB Reg 62BA) – and the old one – CTB Reg 62(5).
The new one is indeed counted as Peter describes.
The old one says that if CTB is claimed within 4 weeks of a successful claim to Guarantee Credit then the date of claim is the start date of the Guarantee Credit award.
But there is 12 months auto-backdating in Pension Credit too. So let’s continue with Peter’s example of someone claiming CTB on 6th October 2005. If this same person had claimed Pension Credit on any date on or after 9th September 2005 and had Guarantee Credit awarded back 12 months then they can have an earlier “date of claim” under the old provision than they can under the new one. So surely the most generous provision should apply.
Example:
Pension Credit claimed on 13th September 2005
Guarantee Credit awarded back to 13th September 2004
CTB Claim form arrives at LA on 6th October 2005
“New rule” date of claim = 6th October 2004
“Old rule” date of claim = 13th September 2004
I have a strong recollection of reading somewhere that the DWP know of this anomaly and plan to make it clear in the new consolidated regs that the earliest date should be used.