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Advice

How this millennial millionaire manages 15 credit cards and his No. 1 piece of advice for beginners

Todd Baldwin has 15 credit cards, but uses them wisely. Here’s how he manages them and why he suggests you should get credit as early as possible.

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Todd Baldwin has enough credit card airline miles to travel round trip from Seattle to Europe for free. The 28-year-old millennial millionaire loves to open new credit cards, especially those with sign-up bonusesairline miles and cash back.

But Baldwin, who today estimates that he opens about two new cards per year, did not start out as a credit card optimizer. Growing up, Baldwin was raised by a single mom who worked multiple jobs to feed three kids. Seeing this, he felt motivated to make sure he didn't have to ever worry about money.

"That's how I got the fire under me because I knew I didn't want the struggle when I was older," Baldwin tells CNBC Select.

In his younger years, Baldwin associated credit cards with debt. But he quickly learned how useful they can be after he got his first credit card (a secured card) during his sophomore year at Western Washington University.

Photo courtesy of Todd Baldwin

His number-one piece of advice to young adults is to start building a credit history as early as possible. It will come in handy when you want to apply for loans or take out a mortgage in the future.

"I didn't know that there was a good side to credit cards until I started researching more," Baldwin says. When you charge expenses onto your credit card, pay them off in full by the due date. That way you avoid any interest charges while also working to improve your credit score.

Promising himself that he would never charge more than he could pay off, Baldwin created a set of guidelines to follow when using his credit cards for everyday purchases, travel and more. Here is how he manages his 15 credit cards.

He only keeps 1 credit card in his wallet at a time

Baldwin may have 15 credit cards in his name, but he keeps only one in his wallet and the rest in a safe at home.

He notes that the card in his wallet is typically a flat-rate cash-back card that pays 1.5% to 2% on every purchase. He recommends these type of rewards credit cards, or one that comes with an interest-free period, such as a 0% APR credit card.

For those looking to have both, the Citi® Double Cash Card offers zero interest for the first 18 months on balance transfers (13.99% to 23.99% after; N/A on purchases), as well as 2% cash back: 1% on all eligible purchases and an additional 1% after you pay your credit card bill.

Citi® Double Cash Card

Citi® Double Cash Card
On Citi's secure site
  • Rewards

    2% cash back: 1% on all purchases and an additional 1% after you pay your credit card bill

  • Welcome bonus

    No current offer

  • Annual fee

    $0

  • Intro APR

    0% for the first 18 months on balance transfers; N/A for purchases

  • Regular APR

    13.99% - 23.99% variable on purchases and balance transfers

  • Balance transfer fee

    3%, minimum $5

  • Foreign transaction fee

    3%

  • Credit needed

    Excellent

See our methodology, terms apply.

Pros

  • 2% cash back on all purchases
  • Simple cash-back program that doesn't require activation or spending caps
  • One of the longest intro periods for balance transfers at 18 months

Cons

  • No welcome bonus, so you can’t maximize rewards during the first few months of card opening
  • Minimum cash-back redemption of $25
  • 3% fee charged on purchases made outside the U.S.
  • Estimated rewards earned after 1 year: $437
  • Estimated rewards earned after 5 years: $2,185

He doesn't close credit cards

Even though Baldwin stores most of his credit cards away in a safe, he never closes any of them — especially his oldest one.

Closing a credit card can cause a temporary dip in your credit score because you lose the available credit limit on that account and your overall credit utilization rate increases. Since a good, or low, utilization rate entails having low credit card balances and high credit limits, a closed credit card makes your utilization go up and your score is affected.

Instead, keep your credit cards open and active. Letting them go dormant may signal to the issuer that you are no longer using the card and they could close the account on you. To make sure you are using your credit cards regularly, even if they are stored away in a safe, charge a small recurring cost on them, such as a monthly subscription or streaming service, that you automate payment for each month.

He automates his credit card bill payments

Baldwin knows that making on-time bill payments is the most important factor in achieving a good credit score, so he makes sure he always pays his credit card bills by the due date.

To ensure this, Baldwin automates his monthly payments so that the money goes out of his bank account at the same time every month, and he doesn't have to think twice about remembering to do it himself.

In fact, when it comes to paying bills, such as utilities on the six rental properties he has, Baldwin puts as many bills as he can onto one credit card and then automates that credit card payment every month to help his credit score. For those interested in the Citi® Double Cash Card mentioned above, following Baldwin's guideline would also mean you put money into your pocket since you earn cash back when you pay your credit card bill.

He never carries a balance on his credit card

Carrying a balance on your credit card to boost your credit score is a common myth. When you have a revolving balance each month on your credit card, you rack up daily interest charges and eat up your available credit.

To prevent ever paying interest, Baldwin pays off any of his credit card balances in full every month.

He avoids credit cards with annual fees

Though some of the best credit cards come with annual fees, Baldwin has only one that he pays a yearly fee for.

His advice is to avoid cards with annual fees unless the card's benefits outweigh what you must pay to have the card. For example, Baldwin uses his only annual fee card, an airline credit card, to book travel because it comes with a companion fare that offsets the cost of the annual fee.

To help decide if a new card is worth its cost, calculate the amount of money you'd need to spend annually on the card to break even on the annual fee.

Learn more: The best no annual fee credit cards of September 2020

He doesn't go out of his way to earn a welcome bonus

"It's important to never go out of your way to spend $1,000 in order to earn $300 because then you lose $700," Baldwin says.

Though Baldwin likes to take advantage of credit cards' generous sign-up bonus offers, he doesn't spend money he otherwise wouldn't just to get points, miles or cash back. Instead, he waits until he has a big purchase to make anyway before signing up for a credit card to receive the welcome bonus. Knowing that he has expenses coming up, whether it be furnishing one of his rental properties to list on Airbnb or making a repair on his car, he is more likely to reap new card bonuses in a way that works with his budget.

He checks his credit score every couple months

Because Baldwin pays his bills on time and never spends more than he can pay off on his credit cards, he doesn't worry about where his credit score stands. However, he does check his score for free every couple months, especially before he applies for a mortgage on a new real estate investment.

In fact, when Baldwin is in the process of getting approved to buy real estate he will avoid applying for a new credit card altogether. He knows that the hard inquiry that results when the card issuer pulls his credit report immediately dings his score temporarily and he wants to have the best possible score to show for when lenders check his credit.

To check his credit score, Baldwin uses the Credit Karma app, but there are plenty of resources available for consumers to access their credit score.

You don't have to be a Capital One cardholder to use CreditWise® from Capital One, which provides your VantageScore for free from TransUnion, one of the three main credit bureaus.

CreditWise® from Capital One

CreditWise® from Capital One
Information about CreditWise has been collected independently by CNBC and has not been reviewed or provided by the company prior to publication.
  • Cost

    Free

  • Credit bureaus monitored

    TransUnion and Experian

  • Credit scoring model used

    VantageScore

  • Dark web scan

    Yes

  • Identity insurance

    No

See our methodology, terms apply.

To take a deeper look at his overall credit and what makes up his 3-digit credit score number, Baldwin says that he pulls his credit report every 12 to 18 months and/or before he buys new property.

Consider checking your credit report for free at AnnualCreditReport.com.

Learn more: You can now receive 3 free credit reports each week for the next year

Editorial Note: Opinions, analyses, reviews or recommendations expressed in this article are those of the CNBC Select editorial staff’s alone, and have not been reviewed, approved or otherwise endorsed by any third party.