To earn $30 on Binance without making an investment, you can explore the following methods, depending on how much effort you're willing to put in:

### 1. **Referral Program**

Binance's referral program allows you to earn commissions on the trading fees of people you refer. If you refer a few friends or others to Binance, you can easily accumulate earnings based on their trades. The more people you refer, the higher your potential earnings. Typically, Binance offers a commission structure of up to 40% of the trading fees for the users you refer.

### 2. **Binance Earn (Staking or Savings)**

You can participate in Binance Earn through staking or savings without needing an initial investment if you already hold a small amount of crypto. Binance offers various products that pay interest on your holdings. While this may take some time, small crypto holdings can earn rewards that add up to $30 over time. Look for promotions with higher yields for quicker returns.

### 3. **Binance Learn & Earn**

Binance occasionally runs educational campaigns where you can watch videos and take quizzes to earn free crypto. These programs might not provide large amounts, but accumulating multiple rewards can eventually add up to $30. Check the "Earn" section on Binance for active promotions.

### 4. **Airdrops**

Binance supports airdrops for new tokens, which are distributed for free to users who meet certain criteria. Participate in airdrop campaigns by holding or trading specific tokens. If you are quick to join, some airdrops can be worth $30 or more depending on the value of the token being distributed.

### 5. **Trading Competitions**

Binance regularly hosts trading competitions where users can win prizes based on their trading volumes or other criteria. By actively participating in these events, you may be able to earn rewards that could total $30, or even more. These competitions can be a great way to increase earnings without investing.

### 6. **Binance Launchpad (Token Sales)**

Occasionally, Binance hosts token sales on its Launchpad platform. While most sales require a minimal investment, you can sometimes earn small amounts of a token by completing tasks or participating in promotional events. The value of these tokens can sometimes exceed $30.

By leveraging a combination of these methods and staying updated on Binance's promotions and educational campaigns, it's possible to earn $30 over time without making any initial investment.