ADHD and impulsive spending: put a pause between wanting and paying

What the research says

Two studies are worth knowing, partly because they disagree.

A 2024 study compared 225 adults with ADHD with 121 university students. The ADHD group reported buying on impulse more often and found it harder to wait for a reward. In the analysis, that difficulty waiting accounted for part of the link between ADHD symptoms and impulse buying. It was a survey taken at one point in time, so it cannot show that one thing causes another.

A 2020 study asked 1,292 adults from the general community about their symptoms and their money habits. People with more ADHD symptoms reported more impulse buying and saved less. Once the researchers allowed for personality, depression and age and other background factors, the link was no longer significant.

Read together, the two studies support only a narrow claim. Many adults with ADHD symptoms do report more impulse buying. It is not yet clear how much comes from ADHD itself and how much from mood, personality or circumstances. Larger population data from Sweden also links ADHD with more credit defaults from middle age, which is a reason to treat this as a practical problem rather than a character flaw.

Why the moment of buying is the hard part

A purchase pays off now and costs later. The parcel, the new tool, the relief of finally having the thing all arrive at once. The charge, the regret and the tight week before payday come afterward, and they are easy to discount while the basket is open.

Shops know this. Saved cards, one-click buttons, payment in installments and a reminder email about the basket you left all remove the small gaps where a second thought used to happen. For someone who already finds it hard to wait, each removed gap matters.

The book's answer is to put one of those gaps back on purpose.

Add purchase friction where you regret spending

Pick the spending you repeatedly regret, not all spending. The book lists these options:

• Remove saved payment details from shopping sites and apps. Leave them on accounts that pay essential bills.
• Move shopping apps off the first screen of your phone.
• Put nonessential purchases on a 48-hour list.
• Look at the total monthly cost, not only the installment.
• Keep a separate balance for discretionary spending.
• Unsubscribe from promotional messages that tend to set you off.
• Require a second look above an amount you choose.

You do not need all seven. One change at the place you overspend most often is a fair start. If late-night phone shopping is the pattern, the saved card and the app on the first screen are the obvious targets. Making the phone itself less of a shop window is a bigger project, and worth it if most regrets start there.

Some items will survive the wait. That is fine. The list is there to give you a decision, not to win an argument with yourself.

Subscriptions: the charge you agreed to weeks ago

Subscriptions work against memory because the decision and the charge happen at different times. A free trial today becomes a charge next month, when nothing reminds you of it.

The book suggests one list with six columns: service, amount, billing interval, renewal date, how to cancel, and whether you actually use it now. Review a few at a time, for example two during each weekly money check, so cancelling never turns into a weekend project. If a trial needs a card, add its end date to the list the moment you sign up.

When the money is shared

ADHD can affect impulse control and follow-through. It does not erase the effect on a partner when money disappears. The book suggests separating four things in that conversation: what happened, how it affected the other person, who owns the missed action, and what changes in the system.

It also warns against one partner becoming the permanent auditor. Shared visibility works better than control: an automatic payment for essentials, a balance safeguard, and a short weekly review both of you can see. Any spending control must be open and agreed. Hiding money from a partner against your agreements is not a friction tool, and a partner who controls your money is a matter for an abuse support service, not a budgeting trick.

After a purchase you regret

Start from facts, not from a verdict. Check whether the item can be returned and by when. Check that rent and the essential bills still have what they need. If the purchase was large or left essentials short, the ninety-second check from the book is the quickest way back to the current state: open the account, read the balance, scan the next seven days for essential payments, and close it.

Shame tends to make the next look at the account harder, which is how one bad purchase becomes a month of not opening the app. The book treats a regretted purchase as information about where the next pause belongs. Shame makes avoidance worse explains why that matters.

The next action

Choose the one place you most often spend in a way you regret. Make one change there tonight: delete the saved card, move the app, or start the WAITING note.