You have heard the word "stablecoin" and never felt like looking up what it means. Let's do it now, without jargon and without selling you anything.
01A stablecoin is not Bitcoin
A stablecoin is a dollar (or a euro) in digital form, that moves on its own, without going through a bank. That is the definition. The rest is detail.
Confusing them with Bitcoin keeps more people away than anything else, so let's clear it up first. Bitcoin changes value every second. A stablecoin is built to do the exact opposite: to aim to always be worth one dollar. Not one dollar today and one twenty tomorrow.
"Aiming" is not "always succeeding", and that distinction matters. Further down you will see what happens when it fails.
They run on the same technology, blockchains, and that is the only reason they end up in the same sentence. The goals are opposite: one aims to rise, the other aims not to move.
02They stay still because someone holds the real money
A serious issuer takes your money and sets it aside. If a hundred million dollars of stablecoins are in circulation, a hundred million real dollars must sit somewhere, usually in short-term US government bonds and bank deposits. Every token is the receipt for one parked dollar.
The mechanism is more boring than crypto marketing wants you to believe, and that is precisely the point.
So the right question to ask a stablecoin is not "how much does it pay". It is: who holds the real money, where, and who checks.
The stablecoins that collapsed from 2022 onwards collapsed right there: the money was not set aside.
03Visa, Stripe and PayPal already use them
In mid-August 2026 about 310 billion dollars in stablecoins are in circulation: more than a year earlier, but 4.5% below the May 2026 peak. This is not a line that only goes up. 99.5% is denominated in dollars, and in early 2026 just two issuers, Tether and Circle, covered over 82% of the total. If you think in euros that has a concrete consequence: almost every stablecoin exposes you to the dollar, not the euro.
It is not only enthusiasts. Visa settles part of its network's transactions in stablecoins and launched a stablecoin platform for banks and fintechs in 2026. Stripe bought Bridge, announced in 2024 and closed in February 2025, and built payments on top of it. PayPal distributes its own, issued by Paxos. During 2026 more than 140 banks, fintechs and payment networks, including Visa, Mastercard, American Express, U.S. Bank and Coinbase, lined up behind a common project.
None of this makes them safe. It only means the train has already left, and it is worth knowing what it is before your bank explains it to you in two years.
04The three risks to know first
First: whoever holds the real money can get into trouble. In March 2023 USDC, the second-largest stablecoin in the world, fell below 87 cents. It was not a scam: 3.3 billion of its reserves sat at Silicon Valley Bank, which failed in those days. Circle said it would cover the shortfall with its own funds, the US government protected the deposits, and within about three days the value returned to one dollar. It ended well. But for three days nobody knew how it would end.
Second: not all of them actually have the money set aside. Some promise to stay still using algorithmic mechanisms instead of real reserves. One of them collapsed in 2022, wiping out what people had put into it. If a stablecoin cannot tell you verifiably where the money is, the answer is that it is not there.
Third, the one nobody talks about: there is no deposit guarantee. On a current account in Europe you have public protection up to a hundred thousand euros. On a stablecoin you do not. These are not two versions of the same thing: they carry a different risk profile, and anyone presenting them as equivalent is telling you the story badly.
05How to recognise a serious stablecoin
Three questions, in order.
- 1Are the reserves public and verified by third parties?Serious issuers publish a certified periodic report. If you cannot find it on their site in thirty seconds, you already have your answer.
- 2What are the reserves invested in?Short-term government bonds and cash are the boring, correct answer. If exotic assets show up, the risk is no longer the one you thought you were taking.
- 3Is it regulated where you live?In Europe, MiCA has existed since 2024. Stablecoins pegged to a single currency fall under e-money tokens: issuers must be authorised and hold segregated reserves. As of August 2026 there are 23 authorised issuers across 13 countries in the Union. That is a concrete filter, and it is public.
06On its own, a stablecoin pays nothing
It sits still. That is its job.
What pays is what you do with it: lend it, deposit it in a protocol, leave it with someone who puts it to work. There the risk changes nature: it is no longer only the issuer's risk, it is also the risk of whoever is using it on your behalf. That is a different conversation, and anyone mixing it with this one is doing it on purpose.
That part deserves its own piece, and it is the next one we will write.
This guide is written by unflat. unflat is a technology provider, not a bank. Deposits are not covered by state protection schemes and yields vary. This is informational material and does not constitute financial advice.
Sources
- Total market cap and USD/issuer share: Stablecoin Statistics & Data 2026 — Reap · Top Stablecoins by Market Cap — CoinGecko
- USDC depeg, March 2023: USDC Stablecoin Regains Dollar Peg After SVB-Induced Chaos — CoinDesk · Crypto Market Reaction to SVB and USDC Depeg — Chainalysis
- MiCA and e-money tokens: Asset-referenced and e-money tokens (MiCA) — European Banking Authority · MiCA Q1 2026: EU Stablecoin Compliance
- Institutional adoption: Payment fintechs push stablecoin tech for 2026 — American Banker · Open Standard's stablecoin draws Stripe, Visa and Mastercard — American Banker