How Paypal robs the Bank of England

Digital currencies might start creating a sticky situation for central banks.

Have you ever wondered how the rise of digital currencies will impact on the monetary base, and the effects that will have on seigniorage revenue to governments worldwide? No? Well, this pair of articles by the Financial Times' Izabella Kaminska, "Why central banks should take charge of their digital currencies" and "Turning mobile money into M0" is interesting nonetheless.

Kaminska examines the typical problem central banks have with digital currencies, which is that they tend to mess around with the way banks expect the money supply of the nation to work. The immediate downside of that is that it impacts on seigniorage, the revenue accrued to a government by its right to mint coinage.

In other words, when you use PayPal rather than posting a £50 note, you need never hold that currency, and the government never receives the revenue for having printed it.

She writes:

Consequently, what you end up with is something very different to cash of the realm. In many ways, it’s worse than zero-yielding money due to the natural decay associated with transactional, creation and redemption costs. The other point is that Safaricom [the vendor of a hugely popular Kenyan mobile currency] is actually behaving much like a quasi-autonomous state within a state that’s issuing its own private money system, the value of which is constantly pegged to the official currency of the land.

How can nations fight back? (Assuming, of course, they ought to fight back — but that revenue is likely to be mighty tempting.) One possibility is by working with digital currency vendors to create payment mechanisms which don't require holding a parallel currency to work. And make no mistake, even though PayPal denominates its accounts in pounds and dollars, it's a parallel currency in all but name.

Jean-François Groff, one of the pioneers of the Web at CERN, is working on that option. Mobino, his company, is a mobile payment system which works on real-time debiting, not on keeping a float of a second currency on tap:

Mobino’s system aims to cut out as many intermediaries from the debit process as possible by getting you, the customer, to strike up a single direct debit agreement with itself. The company then charges the customer for transactions conducted with partner vendors, whilst the customer deals only with Mobino rather than a multitude of online or retail vendors.

And if that scheme was done by Mobino — or a similar system — working with a central bank, then the costs of running it could be funded from the seigniorage revenue it returns to the government. Rather than the cost of "printing" money being the actual ink and paper, it would become the price of maintaining servers and bandwidth.

In an ideal state-controlled money world, you could imagine the system mutating into one where the central bank itself ended up billing you directly for the use of their digital cash. So, rather than withdrawing physical cash to conduct your payments, you’d be transacting state-issued digital cash, now credited or debited from your account as quickly as a bank credits or debits cash to you at the ATM wall.

But, while Kaminska mentions it in passing, it would be interesting to see the analysis applied to Bitcoin. Lord knows the currency has its flaws, but it's the only one of the successful(ish) mobile payment systems which actually embraces the fact that it is a parallel currency — and a freely floating one, at that. The Bitcoin ecosystem has a specific method for distributing the seigniorage it generates, but also gradually reduces that rate; by 2140, the system will likely be in de-facto deflation.

By moving the transaction entirely into a parallel currency, the system is also more efficient than even Mobino could ever hope to be — provided you don't plan on converting Bitcoins into real-world money. If you do, things get trickier; the exchanges have had a number of high-profile failures, and are probably the weakest point in a network which manages to combine cryptographic perfection with an incredible amount of possibilities for human error.

It may be the case that central banks have to start examining what their role would be in a world of digital currencies; but if they do, it may be better for them to skip the sticking-plaster world of PayPal and Mobino and move straight to something designed for an all-digital world from the start.

Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

Photo: Getty
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Theresa May could live to regret not putting Article 50 to a vote sooner

Today's Morning Call.

Theresa May will reveal her plan to Parliament, Downing Street has confirmed. They will seek to amend Labour's motion on Article 50 adding a note of support for the principle of triggering Article 50 by March 2017, in a bid to flush out the diehard Remainers.

Has the PM retreated under heavy fire or pulled off a clever gambit to take the wind out of Labour's sails while keeping her Brexit deal close to her chest? 

Well, as ever, you pays your money and you makes your choice. "May forced to reveal Brexit plan to head off Tory revolt" is the Guardian's splash. "PM caves in on plans for Brexit" is the i's take. "May goes into battle for Brexit" is the Telegraph's, while Ukip's Pravda aka the Express goes for "MPs to vote on EU exit today".

Who's right? Well, it's a bit of both. That the government has only conceded to reveal "a plan" might mean further banalities on a par with the PM's one-liner yesterday that she was seeking a "red white and blue Brexit" ie a special British deal. And they've been aided by a rare error by Labour's new star signing Keir Starmer. Hindsight is 20:20, but if he'd demanded a full-blown white paper the government would be in a trickier spot now. 

But make no mistake: the PM didn't want to be here. It's worth noting that if she had submitted Article 50 to a parliamentary vote at the start of the parliamentary year, when Labour's frontbench was still cobbled together from scotch-tape and Paul Flynn and the only opposition MP seemed to be Nicky Morgan, she'd have passed it by now - or, better still for the Tory party, she'd be in possession of a perfect excuse to reestablish the Conservative majority in the House of Lords. May's caution made her PM while her more reckless colleagues detonated - but she may have cause to regret her caution over the coming months and years.

PANNICK! AT THE SUPREME COURT

David Pannick, Gina Miller's barrister, has told the Supreme Court that it would be "quite extraordinary" if the government's case were upheld, as it would mean ministers could use prerogative powers to reduce a swathe of rights without parliamentary appeal. The case hinges on the question of whether or not triggering Article 50 represents a loss of rights, something only the legislature can do.  Jane Croft has the details in the FT 

SOMETHING OF A GAMBLE

Ministers are contemplating doing a deal with Nicola Sturgeon that would allow her to hold a second independence referendum, but only after Brexit is completed, Lindsay McIntosh reports in the Times. The right to hold a referendum is a reserved power. 

A BURKISH MOVE

Angela Merkel told a cheering crowd at the CDU conference that, where possible, the full-face veil should be banned in Germany. Although the remarks are being widely reported in the British press as a "U-Turn", Merkel has previously said the face veil is incompatible with integration and has called from them to be banned "where possible". In a boost for the Chancellor, Merkel was re-elected as party chairman with 89.5 per cent of the vote. Stefan Wagstyl has the story in the FT.

SOMEWHERE A CLOCK IS TICKING

Michael Barnier, the EU's chief Brexit negotiator, has reminded the United Kingdom that they will have just 15 to 18 months to negotiate the terms of exit when Article 50 is triggered, as the remaining time will be needed for the deal to secure legislative appeal.

LEN'S LAST STAND?

Len McCluskey has quit as general secretary of Unite in order to run for a third term, triggering a power struggle with big consequences for the Labour party. Though he starts as the frontrunner, he is more vulnerable now than he was in 2013. I write on his chances and possible opposition here.

AND NOW FOR SOMETHING COMPLETELY DIFFERENT

Emad asks if One Night Stand provides the most compelling account of sex and relationships in video games yet.

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Theresa May is becoming adept at avoiding defeats says George

Liv Constable-Maxwell on what the Supreme Court protesters want

Theresa May risks becoming an accidental Europe wrecker, says Rafael Behr

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Stephen Bush is special correspondent at the New Statesman. His daily briefing, Morning Call, provides a quick and essential guide to British politics.