Pair Amex Platinum and U.S. Bank Triple Cash for Flights

Key Takeaways

• Earn 150,000 Membership Rewards points after spending $20,000 on the American Express Business Platinum within the first 3 months of membership.
• Use the U.S. Bank Triple Cash Rewards for 3% cash back on gas and EV charging to offset the Amex Platinum's $695 annual fee.
• Transfer Membership Rewards to partners like Flying Blue or Air Canada Aeroplan for 2.0 cents per point or higher on international business class.
• Avoid using the Amex Platinum for daily overhead; its 1x earn rate on non-category spend is a value killer for small businesses.

The conventional wisdom says you should put every business expense on your most prestigious card to rack up points in one place. Here's why that's wrong for most small owners: The American Express Business Platinum is a specialized tool for travel perks, but it's a terrible card for daily operations. If you put your gas, office supplies, and local inventory runs on the Platinum, you're earning a measly 1 point per dollar on categories where other cards pay triple.

Why One Card Isn't Enough

Small business owners often fall into the trap of the one-card solution.

You want simplicity, so you swipe the heavy metal card for everything. Com/reviews/business-credit-cards/amex-business-platinum) only offers high multipliers on very specific travel spend. If you aren't booking flights or prepaid hotels through the Amex Travel portal, you're mostly earning 1x points. For a contractor spending $5,000 a month on fuel and supplies, that's 60,000 points a year. That same spend on a dedicated category card could net $1,800 in cash or significantly more points.

We break down the Amex Business Platinum in our full review of the card and the verdict is clear: ditch the status symbol unless you have the category spend to back it up. By adding the U.S. Bank Triple Cash Rewards to your wallet, you fill the massive holes Amex leaves behind. You use Amex for the lounge access and large purchases, and you use U.S. Bank to claw back cash on the mundane stuff like gas and office software. You can learn more about how to evaluate these trade-offs in our travel rewards hub.

The Category Gap Strategy

Spend Category	Primary Card: Amex Business Platinum	Secondary Card: U.S. Bank Triple Cash	The Winner
Flights (Amex Travel)	5x Points	1% Cash Back	Amex Platinum
Gas & EV Charging	1x Points	3% Cash Back	U.S. Bank
Office Supplies	1x Points	3% Cash Back	U.S. Bank
Large Purchases (>$5k)	1.5x Points	1% Cash Back	Amex Platinum
Cell Phone Service	1x Points	3% Cash Back	U.S. Bank

Why This Specific Pairing Works

The Amex Business Platinum is an expensive card at $695 a year.

To justify that cost, you need to earn high-value Membership Rewards and use the credits. But you shouldn't use it at the pump. S. Bank Triple Cash Rewards has no annual fee. It sits in your glove box or your digital wallet specifically for the 3% categories. S. Bank, you aren't just saving money; you're effectively subsidizing the Amex annual fee.

If you find yourself with excess cash in your business account rather than rewards, check out our guide on what to do with $50,000 idle business cash.

Combined Earn: Running the Math

Say you run a 5-person landscaping or HVAC business. Your annual spend mix might look like this: $20,000 in equipment (large purchases), $15,000 in gas, and $5,000 in office supplies/telecom. We value Membership Rewards at roughly 1.8 cents when transferred to airline partners.

Expense Type	Amount	Card Used	Reward Earned	Est. Value
Large Equipment	$20,000	Amex Platinum	30,000 Points	$540
Gas / Fuel	$15,000	U.S. Bank	$450 Cash	$450
Office/Telecom	$5,000	U.S. Bank	$150 Cash	$150
Total	$40,000	Mixed	30k Pts + $600	$1,140

By splitting the spend, you've covered almost the entire Amex annual fee in cash from the U.S. Bank card, while still banking 30,000 high-value points from the large purchase bonus on the Platinum. If you had put all $40,000 on the Amex, you would have ended with 50,000 points (worth about $900) and zero cash. The two-card strategy is $240 more profitable in this scenario.

The Redemption: Business Class to Europe

The real power of the Amex Business Platinum isn't the 1x spend; it's the transfer partners. For example, you can transfer points to Air France/KLM Flying Blue. A one-way Business Class seat from New York (JFK) to Paris (CDG) can often be found for 50,000 to 70,000 points plus taxes.

If that flight costs $2,800 in cash, and you use 50,000 points, you're getting 5.6 cents per point in value. That's how you 'make your vocation your vacation.' By using the U.S. Bank card for your 3% overhead, you save the cash necessary to pay the fuel surcharges on that 'free' flight. You can use our rewards calculator to see if your specific spend mix hits these targets.

Fees vs. Value: The Honest Reality

The Amex Business Platinum costs $695. The U.S. Bank Triple Cash has a $0 annual fee.

To make this work, you must use the Amex credits. These include the $200 airline fee credit, the $400 Dell technology credit (split semi-annually), and the $120 phone service credit. If you don't buy tech from Dell or you don't check bags, the 'real' cost of the card stays high. Most business owners should only keep the Platinum if their travel frequency allows them to use the Centurion Lounges at least 5 times a year. Otherwise, you're paying for a heavy piece of metal that doesn't earn its keep.

Compare this to other options like the Amex Blue Business Plus, which earns 2x on everything up to $50,000 annually for no annual fee. If your total spend is under $50,000, the Blue Business Plus usually beats the Platinum for pure point accumulation.

Skip This Pairing If:

• Your business spend is mostly payroll or rent. Which typically carry high credit card processing fees that wipe out the 1% to 3% rewards.
• You don't travel at least three times a year. The Platinum's value is locked behind airport walls.
• You carry a balance. The interest rates on these cards will destroy any 3% gain you make. If you need to carry debt, look for a 0% intro APR card instead.

Before moving points, always verify current transfer ratios and seat availability on the American Express Membership Rewards portal. Award pricing and airline partners change frequently.

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📋 Disclaimer

This article is for informational purposes only and does not constitute legal, tax, financial, or professional advice. Laws and regulations change frequently, and the information presented may not reflect the most current legal developments. Always consult with a qualified professional (CPA, attorney, financial advisor) before making business decisions based on this content. MyBizNerd may receive compensation through affiliate links, but this never influences our recommendations.

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