Kevin O'Leary of 'Shark Tank' shares his top investing and credit card tips

The businessman and television personality appears live on "GMA" to share his insight into how to best use credit cards and how to get into investing.
3:18 | 09/26/17

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Transcript for Kevin O'Leary of 'Shark Tank' shares his top investing and credit card tips
Your money matters. "Shark tank"'s Kevin o'leary back with us. He is giving us tips from the tank and helping us make smart money decisions. Thank you. Thank you. Glad to be here. Everybody wants to know how to save money and make money. What's your best advice for maintaining -- hit that button. What's your best advice for maintaining a credit card? It's not just a credit card. Everybody should have two credit cards. One with a low limit, and you can put this number out because it's maced out at 25, and it's on the internet. You have to care about that, and then you keep a second one for yourself personally with a higher limit of $10,000, but you never put this one online. This is the one that you use for larger purchases, but in both cases, you have to pay these puppies off every month. Every single month. You never want to have a balance because you get charged interest between 7% and 23%, and that's a lot. That's a lot. At the end of the month. Too much on in the first place. When you have a credit card T benefit is you build a credit history and that helps you in life, but you have got to pay it off every month. Every month. That's the key. Hit the button for question number two. Here we go. All right. Here we go. Question number two. What's the best way to save for your retirement on a modest salary? When you get your first job, the average salary in America is $52,000. You have to take your tax earnings and informers vest it in the long-term. If you start in your 20s, by the time you're 65, you will have about $1.2 million. Do it by not buying all that crap you don't need. Keep that 10%, and you will be safe when you are old. It's scary to invest. I'll tell you what's scary. Being 65 years old with no investments. You have heard a lot of wows here. What crap can I eliminate now? We'll have members of our audiences. What percentage of your salary do you think you should save every year? 10%. That's it. But what do you save? About 8%. Bump it up. Bump it up 2% more, and you will be a millionaire when you are 65. So 10% is what you recommend. It's not what I recommend. It's what you have got to do. You can't assume someone will be there for you when you are 65. You have to put money away. This is crucial. Hit that button one more time. Here we go. Our money will spin it. Wh what are your top pick for investors? I like companies with big balances that pay dividends that are in different sectors so I get diversify occasion. Johnson & Johnson. I love it. Home Depot, I love it. Exxon. They all pay dividends and I love dividends. One more for good luck's

This transcript has been automatically generated and may not be 100% accurate.

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