Annual fees on premium travel credit cards can sting, especially when one posts to your statement before you've decided whether the card is still earning its keep. The good news: most issuers will refund the fee if you cancel or downgrade quickly. The catch is that "quickly" means something different at every bank.

American Express, Chase and Citi are the most predictable. Amex and Chase typically refund the fee in full if you act within 30 days of it being billed, whether you cancel outright or downgrade. Citi gives you a slightly longer 37-day window on both fronts. Barclays is the most generous of the major issuers, at around 60 days, though it won't usually prorate anything after that.

Then it gets messier. Capital One is famously inconsistent: the folk wisdom says 39 days for a refund on cancellation, but downgrades may still leave you on the hook for the full fee. Bank of America has no consistent published policy at all — refunds within 30 days happen, but often depend on how strong your overall relationship with the bank is. Cardless, the co-brand issuer behind Bilt cards, may be the strictest: on some products the fee appears to be non-refundable once billed, though Bilt cards specifically seem to carry a 30-day window.

Amex has one wrinkle worth knowing. If you're past the 30-day mark, cancelling earns you nothing back, but downgrading to a no-fee product can sometimes get you a prorated refund. Before you do that, though, remember Amex's "once in a lifetime" rule — once you've held a card, you can't earn its welcome bonus again, and downgrading can complicate future bonus eligibility.

A couple of other pointers from the source: Massachusetts residents are legally entitled to a pro-rated two-thirds refund if they cancel at any point in the year, though reportedly banks don't always honour it without a push. More broadly, it pays to note when your annual fees post each year, do a quick value audit when they hit, and avoid cancelling any card within its first 12 months — better to wait until just after the anniversary so you don't jeopardise the bonus or your account history.

Why does this matter to travellers? Because points and miles strategy is as much about housekeeping as earning. A forgotten $395 fee on a card you stopped using is pure waste, and the difference between acting on day 29 versus day 35 can be the whole amount. Mark the billing month in your calendar, know your issuer's window, and decide before the clock runs out.