A loophole to avoid budget airline payment fees could close for tens of thousands as many banks are dumping the Visa Electron plastic, which can be used to bypass charges.
Savers with a fixed-rate cash Isa who don't use their full allowance immediately could lose much of their tax-free entitlement or pay steep penalties to keep it.
If you're one of the hundreds of thousands stranded by the volcanic ash cloud, this is a full Q&A guide on your refund, employment and financial rights.