What Are Stablecoins? Types, Regulations & DeFi Use Cases Explained [2026]

Stablecoins are cryptocurrencies designed to maintain a stable price by pegging their value to fiat currencies or other assets. "Bitcoin and Ethereum prices swing too much—it's a bit scary…" "Isn't there a more stable cryptocurrency?"

If you've ever felt that way, stablecoins are exactly what you need. In this article, we'll explain why stablecoins are "stable" and when they come in handy, in plain and simple terms.

What you'll learn in this article

✅ How stablecoins (price-stable cryptocurrencies) work

✅ The differences between USDT, USDC, and DAI at a glance

✅ The current regulatory landscape in Japan

✅ How to earn stable yields with DeFi

Bitcoin and Ethereum can see large price swings in a single day. This is because many people buy them hoping "the value might go up!"—much like stocks—so supply and demand can cause wild price fluctuations.

Stablecoins, however, are—as the name suggests—cryptocurrencies designed to maintain a stable price.

Stablecoins Are Pegged to Real-World Money or Assets!

The most common type is pegged to fiat currencies (government-issued money) like the US Dollar (USD) or Japanese Yen (JPY). They are engineered so that "1 coin ≈ 1 dollar" or "1 coin ≈ 1 yen," keeping the price nearly constant.

Think of it like a prepaid card. A prepaid card worth 100 yen is always worth 100 yen no matter when you use it. Stablecoins work similarly—they are designed to hold a value equal to the fiat currency they're pegged to.

There are three main mechanisms stablecoins use to keep their price stable.

1. Fiat-Collateralized Stablecoins

This is the most popular type. The company issuing the stablecoin holds fiat currency (dollars, yen, etc.) equal to the value of issued coins as "collateral" in a bank or similar institution. Because there is proof that "for every coin issued, we hold 1 dollar," the coin's value stays stable. Well-known examples include USDT (Tether) and USDC (USD Coin).

2. Crypto-Collateralized Stablecoins

Instead of fiat currency, these stablecoins are backed by other cryptocurrencies like Bitcoin or Ethereum. Since the collateral crypto can fluctuate in price, they are typically over-collateralized—meaning more crypto is locked up than the value of stablecoins issued—to cover volatility risk. It's a bit more complex, but many aim for a more decentralized structure. DAI is the most well-known example.

3. Algorithmic (Non-Collateralized) Stablecoins

These stablecoins have no explicit collateral. Instead, they use special programs (algorithms) to automatically adjust the coin supply to stabilize the price. When demand rises and the price starts climbing, supply is increased; when demand falls and the price drops, supply is reduced. It's a clever mechanism, but there have been cases where it failed and the price collapsed dramatically, so extra caution is needed.

Major Stablecoin Comparison

Stablecoin regulation is advancing worldwide. Japan is also building out its legal framework.

Japan's Revised Payment Services Act (2023)

The revised Payment Services Act, enforced in June 2023, established a legal framework for stablecoins in Japan. Under this revision, stablecoins pegged to fiat currencies are classified as "electronic payment instruments," and issuers must be banks, fund transfer service providers, or trust companies.

JPYC (Japanese Yen Stablecoin)

JPYC is gaining attention as a yen-pegged stablecoin. It is issued in compliance with Japanese regulations and can be used on blockchains such as Ethereum and Polygon. It is expected to see increased adoption as a domestic payment method going forward.

Related: How to Fund Your Tria Card via Bank Account with JPYC: A Beginner's Guide to Web3 Wallet & Crypto Credit Cards

The US GENIUS Act / CLARITY Act

In the US, the GENIUS Act was enacted in 2025, establishing clear rules for payment stablecoins. It requires issuers to maintain reserve assets and legally defines payment stablecoins as non-securities. However, the GENIUS Act prohibits paying interest (yield) to users, leaving the treatment of "yield-bearing stablecoins" as an unresolved issue.

As a result, discussions continue in Congress—building on the context of the contemporaneous Clarity Act—about how to legally classify yield payments. How the US draws the line between "payments" and "yield" will set the standard for global stablecoin markets, so this regulatory development remains one to watch.

Pros

1. A "Safe Haven" During Market Turbulence Since Bitcoin and Ethereum prices can swing wildly, when you think "prices might drop"—you can temporarily convert to stablecoins to protect your assets from big swings. Think of it like a ship seeking shelter in a safe harbor during a storm.

2. Convenient for Cross-Border Remittances Using stablecoins pegged to fiat currencies, you can send money abroad quickly and cheaply while maintaining relatively stable value. For people in regions with unstable local currencies, dollar-pegged stablecoins are particularly attractive.

Cons & Risks

1. Issuer Trustworthiness (Counterparty Risk) For fiat-collateralized stablecoins especially, it's crucial that the issuing company truly holds the fiat collateral. If the issuer goes bankrupt or commits fraud, the stablecoin could potentially lose all its value.

2. Mechanism Failure Risk (Especially Algorithmic Types) Algorithmic stablecoins can see their price collapse dramatically if the stabilization program fails. The 2022 UST (TerraUSD) collapse wiped out roughly $40 billion in value and sent shockwaves through the entire crypto market.

3. Regulatory Change Risk Since stablecoins are a new technology, there is still uncertainty about how laws and regulations will evolve in each country. New regulations could change usability or affect stablecoin values.

Stablecoins are widely used in DeFi (Decentralized Finance) services on blockchains like Ethereum.

Earn Yield Through Lending

By depositing stablecoins into lending protocols like Aave or Compound, you can earn annual yields of approximately 3–10%. While the interest rates are more attractive than bank deposits, be aware of smart contract risks.

Earn Trading Fees as a Liquidity Provider

By providing stablecoins to DEXs (Decentralized Exchanges) like Uniswap or Curve, you can earn a share of trading fees. Stablecoin-to-stablecoin pairs (e.g., USDT/USDC) carry lower price volatility risk, making them a beginner-friendly option.

Experience DeFi Without Price Volatility

With stablecoins, you can explore DeFi without worrying about crypto's wild price swings. If you're new to DeFi, starting with a small amount of stablecoins is a great way to begin.

👉 What Is Ethereum? Features & Future Outlook Explained

What is a stablecoin?

A stablecoin is a cryptocurrency whose value is pegged to a fiat currency such as the US dollar. Since 1 USDT ≈ 1 USD, the price remains stable, allowing you to invest without the volatility risk of typical cryptocurrencies.

Is there a Japanese yen stablecoin?

Yes—JPYC exists as a Japanese yen stablecoin. With the 2023 revision of Japan's Payment Services Act, the legal framework for stablecoins in Japan is being established.

Are stablecoins risky?

Risks include issuer trustworthiness (USDT), depeg risk (the UST collapse wiped out $40 billion), and regulatory risk. Audited stablecoins like USDC are considered safer.

What are the benefits of using stablecoins in DeFi?

You can earn 3–10% annual yields through lending, earn trading fee income as a liquidity provider, and participate in DeFi without exposure to price volatility.

We hope you've enjoyed this journey into the world of stablecoins—from how they maintain price stability to real-world use cases.

Key Takeaways!

• Stablecoins are special cryptocurrencies designed to maintain stable prices by pegging to fiat currencies
• There are three main types: fiat-collateralized, crypto-collateralized, and algorithmic
• They're useful as a safe haven during volatility and for DeFi applications
• Always be aware of issuer trustworthiness and associated risks

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