E-money is monetary value stored electronically, issued in exchange for funds received, redeemable at par on demand, and accepted as payment by parties other than the issuer. That is the regulatory e money definition; the working e money meaning is a balance that can always be cashed out at face value. Issuing it in the EU or the UK requires an electronic money institution authorization, a lighter regime than a banking license and a considerably narrower one.
What is e money in practice
A customer sends money in, the issuer credits an identical balance, and that balance is the e-money. Spending it reduces the balance and moves real funds to the recipient. Withdrawing it destroys the balance and returns the funds. An issuer cannot create a unit that was not funded first, and cannot pay interest on what it holds.
The money cannot be lent out
This is the line that defines the product. Customer funds must be safeguarded: segregated in an account at a credit institution, invested in a short list of secure liquid assets, or covered by a bank guarantee or insurance policy. They cannot be mixed with the firm's own money and cannot fund lending.
A bank does the opposite. It takes deposits, lends against them, and earns the spread, and its customers sit under a deposit guarantee scheme. An EMI earns fees instead, holds no credit risk on its customers, and its customers are not covered by that scheme.
What protects the customer if the issuer fails
Segregation, not insurance. Safeguarded funds sit outside the insolvency estate and are distributed to e-money holders ahead of general creditors. That is strong protection in principle and slow protection in practice: an administrator has to reconcile the safeguarding account first, and shortfalls caused by poor record-keeping are the usual reason customers do not get everything back.
What an EMI license permits
Issuing, distributing and redeeming e-money, plus payment services on those balances: transfers, direct debits, card issuing and acquiring, remittance. Many EMIs operate as a payment service provider to merchants, or supply virtual account infrastructure so a platform can give each user a named IBAN. The license does not permit lending, taking deposits, or presenting the product as a bank account.
Where e-money shows up in practice
The balance behind an open-loop prepaid card is usually e-money, as is the balance in a stored-value digital wallet. A fiat-referenced stablecoin is close in economics and now falls under a comparable EU issuance-and-redemption regime.
Because the authorization is the scarce part, EMI licenses are bought and sold as businesses in their own right. For a firm that does not want to spend a year in an application queue, acquiring an authorized entity is the faster route into a regulated market, and the diligence focuses on the safeguarding records above almost everything else.