With all due respect, Tesco, Boots, Superdrug etc. have no idea what my nationality is, nor do they care. And I am not even remotely convinced that any retailer that issues a loyalty card/rewards card or similar will be made to turn over records to the IRS.
Let's get real on this. We could all likely come up with a list of a bazillion things that could be subject to FBAR, but what's the point aside from an exercise in the ridiculous?
Accountants, solicitors and the like NEVER want to be definitive as most of us know Any of you who want to list your loyalty cards and attach a value for FBAR, have at it, but IMHO, it's waiving a red flag in front of a bull, and highly likely to have a return flagged for an audit.
And no, I am not declaring my 'rewards' from Tesco as income either.