But this illusion does not last. At the end of the month, your bank statement serves as a brutal reminder. You see all your expenses piling up—the actual money that has left your account. This is the moment when the feeling that things are "free" collapses.

Paying by card often creates a gap between the moment of purchase and the moment you actually feel its impact. This time lag contributes to a sense of surprise—or regret—at the end of the month, especially if you have made numerous small purchases.

Using a bank card triggers a cognitive bias: it leads you to underestimate your spending. You tell yourself, "it’s not much," but these small purchases add up without you being immediately aware of it.

ideasfromtheedge

1 The shock of the bank statement

But this illusion does not last. At the end of the month, your bank statement serves as a brutal reminder. You see all your expenses piling up—the actual money that has left your account. This is the moment when the feeling that things are "free" collapses.

2 The time lag

Paying by card often creates a gap between the moment of purchase and the moment you actually feel its impact. This time lag contributes to a sense of surprise—or regret—at the end of the month, especially if you have made numerous small purchases.

3 The "card" cognitive bias

Using a bank card triggers a cognitive bias: it leads you to underestimate your spending. You tell yourself, "it’s not much," but these small purchases add up without you being immediately aware of it.

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