Money in a Crisis: Cash, Payments and Protecting What You Have

What fails, and in what order

Payments fail first. Card terminals, cash machines and fuel pumps all need electricity and a network connection; when either goes, shops go cash-only or close. The April 2025 Iberian blackout showed the sequence in a single afternoon: within minutes, tens of millions of people could not buy food or fuel or get cash, and those who had notes in their pockets were the only ones who could. Mobile banking goes with the mobile network. Online banking goes with your internet and, in a cyber incident, with the bank itself; several large banks and payment processors have had outages lasting a day or more in recent years with no disaster at all.

Then supply. Shops that stay open sell out of the obvious things within hours and cannot restock while roads, fuel or payment systems are down. Prices rise where sellers can get away with it. Fuel is the choke point for everything else.

Then, in a true crisis, the banks themselves: limits on withdrawals, closures, or a holiday declared while the system is sorted out. This is rare, but it has happened in living memory in developed countries, and when it does, what you hold in your hand is what you have.

Know what you own and what you owe

You own what has no debt against it. A house with a mortgage, a car on finance, a phone on a plan: until the debt is cleared, you hold them on someone else's terms, and in a crisis those terms are enforced by people who are also in a crisis. Getting your own affairs in order does not mean they have to be perfect. It means knowing exactly where you stand: what is yours outright, what is owed and to whom, what it costs each month to keep what you have, and how long you could keep paying that if income stopped tomorrow.

From there the steps are the ordinary ones, done with more urgency. Live within your means and clear the highest-interest debt first. Build the reserve. Keep a month of the bills that must be paid (rent or mortgage, utilities, insurance, medicine) in a form you can pay without the internet if you had to: know your bank's phone banking number and have a checkbook. Hold more than one source of income if you can; a household with two small incomes survives the loss of one. The old advice on this site to build an online business belongs to another era, but the principle behind it stands: do not depend on a single employer being there.

Paper

When systems are down, paper proves who you are and what is yours. Keep in a waterproof folder, with copies in the go-bag and photographs in encrypted cloud storage: identity documents, deeds and titles, insurance policies and the claims numbers, bank and account details, a list of regular payments, prescriptions, and the household plan. Add a short letter saying where things are, for whoever has to act if you cannot.