You land back home with a fold of leftover euros or dollars in your wallet. The obvious move is to change them back to pounds, and travel money buy-back lets you do exactly that. But the rate you get is never as good as the rate you paid, and once you add fees and a wider sell-back spread, selling small amounts back can leave you with surprisingly little. Here is how buy-back really works, and how to decide whether it is worth doing at all.

What buy-back actually is

Buy-back is the reverse of buying travel money. A provider takes your unused foreign currency and gives you pounds in return, at their buy-back rate (also called the sell-back rate, because you are selling currency back to them). It clears out leftover notes rather than leaving them in a drawer until next time.

The catch is that every currency has two prices: the rate you pay to buy, and a separate, less generous rate you get when you sell back. The gap between them is called the spread, and it is how the provider makes money on the round trip. You buy a little below the real rate and sell back a little above it, so the provider keeps a slice at both ends, even if the exchange rate has not moved a penny while you were away.

The sell-back rate is always worse than the buy rate

This is the most important thing to understand. The buy-back rate is always set further from the real rate than the buy rate was, so the wider the spread, the less you get back. Worse, buy-back spreads are often wider than buying spreads. Providers know selling back is a convenience purchase, so the rate tends to be less competitive than the headline buy rate they fight over to win your order.

Fees, minimum charges and the notes-only rule

On top of the spread, watch for these:

  • Buy-back fees. Some providers charge a flat fee or a percentage. Others advertise fee-free buy-back but make their margin in the rate instead, so fee-free is not automatically better.
  • Minimum charges. A minimum fee hits small amounts hardest. A £3 or £5 charge barely registers on €500, but wipes out a meaningful chunk of €40.
  • Notes only, not coins. Almost every provider refuses loose change, so coins are effectively unsellable once you are home. Spend them before you fly back.

Pre-booked buy-back guarantees

Some providers sell a buy-back guarantee at the time you order, often for a small fee, locking in a rate (or a promise to take your unused notes back) for a set period after you return. If you reliably over-order and want certainty, it can be worth it. But read the terms: many guarantees only cover currency bought from that same provider, have a time limit, and still exclude coins. Weigh the fee against how much you realistically expect to bring home.

A worked example: selling €150 back

The real (mid-market) rate is £1 = €1.16. At that rate, €150 is worth about £129.

You take your €150 to a provider to sell back. Their buy-back rate is a wide €1.27 to the pound, so it converts to roughly £118 before charges. They then apply a £4 buy-back fee, leaving about £114 in your hand.

So €150 worth £129 at the real rate comes back as £114. The wide spread cost you around £11 and the fee another £4: roughly £15 gone on a small amount, before you even remember the margin you paid buying those euros in the first place.

So is selling back even worth it?

Sometimes it is, sometimes it genuinely is not. If you travel to the eurozone or the US again, the simplest move is often to keep the notes for next time. Holding on to €150 avoids selling back at a poor rate now and rebuying at a poor rate later, paying the spread twice for no reason.

Sell back when you want the pounds now, when you are unlikely to return to that currency, or when the amount is large enough that the rate matters more than the convenience. For small sums the fee and spread can eat so much it is barely worth the trip to the counter. The smartest habit is to buy only what you will realistically spend, so you never have much to sell back at all.

How Just Travel Money fits in

Just Travel Money compares the rates to buy currency across every major UK provider, ranking them by what you actually receive after delivery fees, so you start your trip with the most for your pounds. We do not currently compare buy-back rates, so the honest, practical approach is a two-step one:

  • Get the best buy rate through Just Travel Money when you order, where the biggest and most certain saving sits.
  • When you return, check the sell-back rate and any fees with providers directly, then weigh whether selling back beats keeping the notes for next time.

The bottom line

Buy-back is convenient, but it is never a clean swap back to pounds. The sell-back rate is always worse than the buy rate, fees and minimum charges punish small amounts, and coins cannot be sold back at all. Often the best return on leftover currency is to keep the notes for next time, and the best saving comes from buying a sensible amount at a strong rate to begin with.

That starts with the buy rate. Compare today’s travel money rates at Just Travel Money and order from the provider giving you the most for your pounds, then sort out any leftovers once you are home.