What is sUSDS (SUSDS)?

sUSDS is a special kind of digital dollar that quietly grows over time. It is the "savings" version of USDS, a stablecoin (a cryptocurrency designed to always be worth about one US dollar) made by the team behind Sky, the project formerly known as MakerDAO. When you lock plain USDS into the Sky Savings Rate system, you receive sUSDS in return, and that sUSDS slowly becomes worth more dollars as interest builds up — a bit like a savings account that pays you for parking your money there.

What is sUSDS in simple terms?

Imagine you put $100 into a piggy bank that magically refills itself a little every day. That is the basic idea behind sUSDS. You start with USDS, a digital dollar that is meant to stay at $1. You hand that USDS to a smart program, and it gives you back sUSDS — a token (a digital coin) that represents your deposit plus the interest you earn over time.

Here is the clever part: the number of sUSDS tokens in your wallet does not change. Instead, each sUSDS becomes redeemable for more and more USDS as the days pass. So if you started with 100 sUSDS worth $100, later those same 100 tokens might be worth $103. This style of token is often called a yield-bearing token, because it carries (bears) the interest inside it. As of writing, sUSDS sits around rank #36 by market value among all cryptocurrencies, which shows that a lot of people use it.

How does sUSDS work?

sUSDS runs on top of the Sky Savings Rate, sometimes shortened to SSR. Think of the SSR as a community-run savings program. When you deposit USDS, the system pays you an interest rate that is decided by Sky's governance (the people who hold the project's governance token and vote on the rules).

The whole thing lives on the blockchain (a shared digital notebook that everyone can read but no one can secretly erase) and is powered by smart contracts (computer programs that run automatically and exactly as written, with no human in the middle). Because the rules are code, no employee can refuse to give your money back or quietly change the deal.

The step-by-step looks like this:

• You deposit USDS into the Sky Savings Rate.
• The smart contract mints (creates) the matching amount of sUSDS and sends it to your wallet.
• Time passes, and interest accrues automatically inside the system.
• When you want to cash out, you return your sUSDS and receive your original USDS back plus the interest it earned.

This design follows a common crypto standard for vault tokens, which means many wallets, apps, and exchanges can recognize and use sUSDS easily.

Where does the interest come from?

A fair question is: how can a digital dollar pay interest at all? The answer is that the Sky system earns money from the assets backing its stablecoins. Sky lends out and invests the collateral (the valuable things held in reserve, such as other crypto assets and real-world holdings) and collects fees and yield from that activity. A portion of those earnings is passed back to savers through the Sky Savings Rate. In short, the interest is not invented out of thin air — it comes from real revenue the protocol generates, and governance decides how much of it goes to sUSDS holders.

Who created sUSDS and when?

sUSDS comes from Sky, the rebranded version of MakerDAO. MakerDAO is one of the oldest and most respected projects in DeFi (decentralized finance — financial services built on blockchains instead of banks). MakerDAO launched the famous DAI stablecoin back in the late 2010s and became known for being community-governed rather than controlled by a single company.

In 2024, MakerDAO began a major upgrade and rebrand called Sky. As part of this change, it introduced USDS as an upgraded stablecoin alongside DAI, and sUSDS as the savings token tied to the new Sky Savings Rate. The same battle-tested team and community that built MakerDAO over many years stand behind sUSDS.

What is sUSDS used for?

People use sUSDS for a few clear reasons:

• Earning passive yield: it is the simplest way to earn interest on dollar-pegged crypto from the Sky ecosystem, without actively trading.
• Holding value: because it is tied to USDS, its dollar value stays relatively steady while still growing slowly, unlike volatile coins that swing up and down.
• Using in other DeFi apps: since sUSDS is a standard token, you can often use it as collateral or supply it to other platforms, putting your savings to work in more than one place.

It is popular with people who want a calmer corner of crypto — somewhere to keep value that does not lurch around like Bitcoin or Ethereum, while still earning something.

What makes sUSDS different?

Plenty of stablecoins exist, but most plain ones (like a basic USD coin) just sit at $1 and pay you nothing. sUSDS is different because the interest is built directly into the token. You do not have to claim rewards or move money around — simply holding sUSDS means your balance is becoming worth more USDS automatically.

Another difference is its heritage. sUSDS is backed by the long history and governance system of MakerDAO/Sky, which has managed billions of dollars in stablecoins for years. That track record gives many users extra confidence compared to brand-new, untested projects.

How do you buy and store sUSDS?

There are two common ways to get sUSDS:

• Mint it: deposit USDS into the Sky Savings Rate (often through Sky's official app or compatible DeFi platforms), and receive sUSDS in return.
• Buy it: trade for sUSDS directly on a DEX (decentralized exchange — a marketplace where users swap tokens straight from their own wallets).

To store sUSDS, you use a crypto wallet (a digital app or device that holds your tokens and the secret keys that control them). Popular choices include browser-based wallets and hardware wallets (small physical devices that keep your keys offline for extra safety). Whoever holds the keys controls the coins, so guard your seed phrase (the secret recovery words) carefully and never share it with anyone.

Is sUSDS safe? Risks to know

sUSDS is built on a respected, long-running system, but no crypto asset is risk-free. Here are the main things to understand:

• Smart contract risk: the system is run by code, and even well-audited code can contain bugs that attackers might exploit.
• Peg risk: USDS is designed to stay at $1, but in extreme market stress a stablecoin can briefly trade above or below its target.
• Rate changes: the savings rate is set by governance and can go up or down, so the interest you earn is not fixed forever.
• Collateral risk: the value of sUSDS depends on the health of the assets backing the Sky system.

None of this means sUSDS is "bad" — these are normal trade-offs in DeFi. The point is to understand what you hold. Always do your own research and never invest more than you can afford to lose. This article is education, not financial advice.

Frequently asked questions about sUSDS

Is sUSDS the same as USDS?

No. USDS is the plain stablecoin worth about $1. sUSDS is the savings version you get when you deposit USDS into the Sky Savings Rate, and it grows in value as interest builds up.

Does the amount of sUSDS in my wallet increase?

No, the token count stays the same. Instead, each sUSDS becomes redeemable for more USDS over time, so your dollar value rises even though the number of tokens does not.

Is sUSDS connected to MakerDAO?

Yes. sUSDS is made by Sky, which is the rebranded version of MakerDAO, the long-standing DeFi project famous for the DAI stablecoin.

Can I lose money holding sUSDS?

It is possible. While sUSDS aims to be stable and earn interest, risks like smart contract bugs, a temporary loss of the dollar peg, or changes in the savings rate mean returns are never guaranteed. Always do your own research.