American Express offers premium credit cards with industry-leading rewards, plus high-yield savings and checking accounts. Connect your Amex accounts to Quadratic to maximize your Membership Rewards, track spending across all cards, and get insights into your premium card benefits.
- Connect all American Express credit and charge cards.
- Track Membership Rewards points earning and redemptions.
- Monitor Amex savings and checking account balances.
- Analyze spending by category and Amex Offers usage.
- Import business card transactions (Corporate, Business Gold, etc.).
- Secure Plaid connection with read-only data access.

Why American Express + Quadratic?
Amex offers premium benefits. Quadratic helps you maximize them.
Rewards Optimization
Analyze spending patterns to maximize Membership Rewards points across bonus categories.
Card Portfolio
See all your Amex cards together - Platinum, Gold, co-brands - to optimize which card to use where.
Benefits Tracking
Understand how you're using premium benefits to justify annual fees and maximize value.
Use Cases
How Quadratic users analyze their American Express accounts.
Membership Rewards
- Track MR points earned across all Amex cards.
- Analyze bonus category spending patterns.
- Monitor transfer partner value opportunities.
Premium Card Benefits
- Track Platinum airline credits and perks.
- Monitor Gold dining and grocery rewards.
- Analyze annual fee value vs. benefits used.
Business Spending
- Track Business Platinum and Gold card expenses.
- Monitor employee card spending.
- Generate expense reports by category.
High-Yield Savings
- Monitor Amex high-yield savings growth.
- Track interest earnings over time.
- Compare Amex rates to other accounts.

AI-powered Amex analysis
Ask questions about your Amex spending naturally. "How many points did I earn on dining this month?" or "Which card should I use for groceries?" - get instant answers and insights.

Beyond the Amex app
The Amex app shows transactions. Quadratic lets you analyze trends, optimize card usage, track benefits, and combine Amex with bank accounts for complete visibility.

Secure connections
Connect through Plaid with bank-level security. Your Amex credentials stay with Plaid - Quadratic only receives read-only data with SOC 2 compliance.
FAQ
How do I connect my American Express account to Quadratic?
In Quadratic, go to Connections, select Plaid, and search for American Express. Sign in with your Amex credentials to establish a secure, read-only connection.
Which Amex cards are supported?
All American Express consumer and business cards are supported including Platinum, Gold, Green, Blue Cash, Delta, Hilton, Marriott, and business cards.
Can I track Membership Rewards points?
You can analyze transaction data to understand your points earning patterns across bonus categories. This helps optimize your spending for maximum rewards.
Does Quadratic support Amex banking products?
Yes. American Express high-yield savings accounts and checking accounts can be connected alongside your credit cards.
Can I connect business Amex cards?
Yes. Business Platinum, Business Gold, and other Amex business cards can be connected, allowing you to track business spending.
Is connecting my Amex account secure?
Yes. Quadratic uses Plaid for authentication. Your Amex credentials are never stored by Quadratic, and all access is read-only.
Explore other connections
Quadratic supports a growing list of data sources. Combine and compare data across sources using Quadratic.