A child watching a parent shop in 1995 saw a small drama every time. Notes came out of a purse, change was counted back, and the purse was visibly lighter afterwards. A child watching today sees a card tap a reader, or a phone hover for half a second. Something happened, but nothing moved.
This isn’t nostalgia for cash. Contactless is quicker, safer and not going anywhere. But it’s worth being honest about what disappeared along with the coins, because it was doing quiet teaching work that nobody had to think about.
What cash taught for free
Physical money made three ideas visible without anyone explaining them. Money is finite — you can see when the purse is nearly empty. Money is comparable — a note is worth more than a coin, and a child can hold the difference. And spending means something leaves — the money is gone, and you watched it go.
A tap hides all three. The card looks identical before and after. To a young child, it behaves less like a wallet and more like a magic key that shops simply accept — which is why so many parents hear some version of “just use the card” when they say something costs too much.
What the research suggests
Studies from UK financial-education bodies point the same way: children who rarely handle physical money find it harder to grasp that digital payments draw on something real and limited, and tend to underestimate what everyday things cost. When money is never seen, its limits have to be taught deliberately — they no longer teach themselves.
The backdrop makes this matter more. The Money and Pensions Service has found that under half of UK children receive a meaningful financial education — and attitudes to money start forming between the ages of three and seven. For most children, the tap is the only money lesson happening, and it’s a misleading one.
The tap didn’t remove the lesson from the transaction — it hid it. The fix is simply to say out loud what the machine no longer shows.
The takeaway: narrate your payments
You don’t need to switch back to cash. You need to become the commentary. “That was £34 for the food shop — it comes out of the same account as everything else.” “I’m not tapping for that, because we’ve already spent the eating-out money this month.” Ten words, said at the till, put the missing information back.
Two small extras help. Show them the banking app after a payment, so they see the number actually go down — that’s the modern version of watching coins leave a purse. And every so often, hand them cash and let them pay for something themselves. The first time a child watches their own money disappear across a counter, the tap makes sense in a way no explanation manages.