Norges Bank has asked every Norwegian household to keep some cash at home. In one of the most digital payment economies on earth, that sounds almost quaint. It is not. This article explores financial redundancy: the quiet discipline of holding more than one card, more than one account, more than one way to pay. And it asks a harder question. If redundancy makes sense in Norway, what does it demand of savers living with high inflation, weak currencies and political risk?

Financial Redundancy: Why Central Banks Want You to Keep Cash at Home

A Strange Request from a Cashless Country

At the end of June 2026, Norway’s central bank made a request that would have sounded unremarkable in 1985 and sounds almost eccentric today: every Norwegian should keep some cash at home. Torbjørn Hægeland, Director of Financial Stability at Norges Bank, was careful not to name a figure. How much depends on your household, your needs, and what essential goods you already have in stock. Pressed by NRK on how much he keeps himself, he answered simply: “I have a couple of thousand kroner.”

The advice is striking because of where it comes from. Norway runs one of the most digitised payment systems in the world (see graph). In Norges Bank’s latest household survey, only 3 per cent of respondents used cash for their most recent purchase at a physical point of sale, one of the lowest shares recorded anywhere. Norwegians pay with cards, phones and watches, and many have not touched a banknote in months. Yet the institution that sits at the centre of this system, the one with the deepest visibility into its plumbing, is telling citizens not to rely on it entirely.

 The reasoning is unglamorous and sound. If the power goes out, if the data network fails, if payment terminals go down or a cyber attack disables a bank, you still need to buy food, medicine and fuel. Your phone may be out of battery. Your bank’s app may be the thing that is broken. The advice, in the central bank’s framing, is to have more legs to stand on.

A Quiet Consensus Among Central Banks

Norway is not an outlier. It is a latecomer to a quiet consensus forming across some of the world’s most advanced payment economies.

The Swedish Riksbank updated its emergency guidance in March 2026 and, unlike its Norwegian counterpart, was specific: each adult in a family should keep 1,000 kronor at hand. The Dutch central bank, together with banks, consumer groups and the Ministry of Finance, advises households to hold roughly 70 euros per adult and 30 euros per child, enough to cover essential spending through a 72-hour payment outage, in a mix of notes and coins (DNB). The same Dutch guidance adds a detail that deserves more attention than it gets: a household with payment accounts at more than one bank is less vulnerable to an outage at any single one of them.

None of this is theoretical. In April 2025, a massive blackout across Spain and Portugal shut down payment terminals and ATMs across the Iberian Peninsula for the better part of a day. Shops that could not process cards simply stopped selling. People with banknotes in their pockets bought water and groceries. People without them waited.

The industry’s own response in Norway is telling. Many payment terminals now have offline backup modes that work with a physical card, not a phone or a watch. Cards linked to the national BankAxept system can buy all types of goods for the first six hours of an outage, and food, medicine and fuel for up to seven days even if banking systems are completely down. A working group of authorities and the financial industry has proposed extending that reserve solution to four weeks. Read that again: the people who run the system are building contingency plans measured in weeks, not minutes.

When the institutions that operate the machinery of payments start advising the public to keep alternatives on hand, the message is not panic. It is something more useful: even excellent systems fail, and the cost of preparing for failure is small.

The Engineer’s Insight

Engineers solved this problem long before economists thought about it. No aircraft flies with a single hydraulic system. No hospital runs without a backup generator. No serious data centre keeps one copy of anything. The principle is redundancy: deliberately carrying spare capacity that is useless almost all the time, precisely because the rare moment it is needed is the moment everything else has stopped working.

Redundancy always looks inefficient from the inside. The second hydraulic system adds weight. The generator sits idle for years. Efficiency experts, looking only at the average day, would strip them all out. Engineers do not, because they are not designing for the average day. They are designing for the worst one.

Applied to personal finance, the same discipline is simple to describe. Two payment cards on different rails, so a Visa outage does not strand you if you also carry BankAxept or Mastercard. Accounts at more than one bank, so a cyber attack, an IT migration gone wrong or a compliance freeze at one institution does not lock up your entire liquidity. More than one broker, so custody problems, platform outages or the failure of a single firm never stand between you and your investments. And some cash at home, the oldest payment technology there is, the only one that works with no power, no network and no counterparty.

After working and living in several emerging economies, I observed how households practise financial redundancy instinctively. Part cash, part mobile money, part gold or livestock, part remittances through more than one channel. Not because a central bank advised it, but because they have lived through the days when one channel simply stopped.

Wealthy economies did not abandon this wisdom because it was wrong. They abandoned it because their systems worked so well, for so long, that the question stopped being asked.

If Norway Needs It, What About Everyone Else?

Here the argument sharpens. If financial redundancy makes sense in Norway, a country with a trusted central bank, a deposit guarantee scheme, low inflation, a stable currency and no meaningful political risk, then it applies with far greater force where one or more of those assumptions fails.

Consider what changes when you move from Oslo to an economy with 40 per cent inflation, a managed exchange rate under pressure, or a banking sector that has frozen withdrawals within living memory. The Norwegian saver’s worst case is an awkward weekend without card payments. The saver in Beirut, Buenos Aires or Khartoum has a different list: deposits trapped behind withdrawal caps, savings redenominated overnight, a currency that loses more value in a quarter than a Norwegian portfolio loses in a bad year, banks shut by conflict rather than by software.

This is where an important distinction emerges. In Norway, the problem redundancy solves is payment continuity: keeping the ability to transact for a few days while systems recover. In volatile economies, the deeper problem is value preservation, and holding more local cash does not solve it. A currency losing 40 per cent a year turns banknotes under the mattress into a melting asset. So the toolkit shifts from cash towards alternatives to cash, each a different way of storing value outside a failing channel. Hard currencies, typically dollars or euros held where lawful, protect against inflation and devaluation. Gold, whether bullion, coins or jewellery, has served this role for millennia precisely because it is compact, portable and independent of any institution; in much of the Middle East and South Asia, a family’s gold is not ornament but treasury. And real assets, small or large, do the same work at different scales: land, property, equipment, inventory, livestock, anything that holds value when the currency does not. Households in these economies routinely convert income into assets almost as fast as it arrives, not out of financial sophistication but out of self-defence.

None of these alternatives is free of trade-offs, and honesty requires the same accounting applied earlier. Physical stores of value carry security risk. Gold and hard assets are illiquid at exactly the wrong moments, and gold pays no income while you hold it. Foreign currency may sit in legal grey zones under capital controls.

The point is not that any single alternative is superior, but that spreading value across several of them is the same discipline running through this entire article: diversification as mitigation. The Norwegian household diversifies its means of payment. The household in a volatile economy diversifies its stores of value. Same logic, different layer of the pyramid, and the probability weights determine how much of your wealth the exercise deserves.

This is worth stating plainly because financial advice so often travels in one direction, from rich and stable economies to everyone else. On this subject the flow reverses. The Somali trader running money through three channels and the Norwegian household with a couple of thousand kroner in a drawer are on the same continuum. One of them has simply been forced to take the lesson more seriously.

The Arithmetic of Small Inefficiencies

Every layer of redundancy has a cost, and honesty requires naming it. Cash at home earns nothing and loses quietly to inflation. A second bank account means another login, another card, occasionally another fee. A second broker fragments your portfolio overview and adds paperwork at tax time. None of this is free.

But look at the shape of the trade. The costs are small, known and continuous. The failure they insure against is rare, unknown and severe. This is the classic structure of insurance, and it is the same asymmetry that makes an emergency fund rational even though it drags on returns. You are not trying to maximise the efficiency of the average day. You are trying to make sure the worst day is survivable, and ideally boring. The question is close in spirit to the one behind The 2x Rule: not “can I afford this?” but “would I still be fine if things went wrong tomorrow?”

There is also a limit, and it matters. Redundancy is not hoarding. Ten bank accounts do not make you ten times safer; they make you disorganised, and disorganisation is itself a risk. Finans Norge made the same point about national preparedness: building an emergency system entirely on cash would cost far too much, and the real goal is to have several different ways to pay. The value of redundancy comes from the second and third layer. Beyond that, returns diminish fast, and the exercise tips from prudence into anxiety.

What Financial Redundancy Looks Like in Practice

Norges Bank’s refusal to name a number is not evasion. It is the point. Redundancy is judgement, not formula, and it should be sized to your household rather than copied from a checklist. Still, the architecture is fairly universal.

Cash covers the first hours and days: enough for food, fuel, medicine and transport for your household until systems come back, held in small denominations, because in an outage nobody can give you change for a large note. Physical cards on more than one payment rail cover the first weeks, since offline terminal solutions work with a card in hand, not a phone.

Accounts at more than one bank cover institutional failure, whether that failure comes from hackers, fraud, a botched systems upgrade or a natural catastrophe; and as I explored in Is Your Money Safe?, deposit guarantee schemes protect you only up to a ceiling per depositor per institution, which is itself a quiet argument for spreading larger balances. More than one broker covers custody risk on the wealth side, the part of the pyramid people think about least because it goes wrong least often. And for readers in harder environments, the same layers extend outward into currency diversification and jurisdiction diversification, subject always to local law.

None of this requires wealth. That is worth underlining. A student with two cards and the equivalent of fifty euros in a drawer has better financial redundancy than a millionaire whose entire net worth sits behind one login. Like most disciplines that actually protect people, it is a matter of structure, not size.

A Final Thought

There is an old adage behind all of this: you never know, so prepare for the worst. It survives because it keeps being right. What the central banks of Norway, Sweden and the Netherlands have done is translate that adage into the language of payment systems, and what this article has tried to do is translate it back into the language of personal finance.

Efficiency sounds great. A financial life optimised to the last decimal, one bank, one card, one platform, everything digital, everything seamless, is also a financial life with a single point of failure. The alternative costs almost nothing: a little cash in a drawer, a second card in the wallet, a second institution holding part of your money. Minor inefficiencies, deliberately chosen, that buy something efficiency never can. Resilience on the bad day, and peace of mind on all the others.

Keep it real. Sweat Your Assets.