The BYOC advantage: How to integrate your existing corporate cards with Expensify

By Joe Kaufman, Product & Operations Leader at Expensify. Connect with Joe on LinkedIn. 

"If we want better expense tools, we need to switch cards." Right? 

This assumption is so common that most finance teams accept it as truth. You want automated expense tracking? Switch to our card. You want realtime visibility? Switch to our card. You want better reconciliation? You guessed it: switch to our card.

Here's what those other platforms won't tell you: you don't need to replace your corporate cards to get powerful expense management. With Expensify, you can integrate your existing AMEX, Chase, Citi, or Bank of America cards in minutes and get realtime transaction flow, auto-categorization, and zero team disruption.

No plastic swaps. No subscription migrations. No explaining to your CFO why you're replacing perfectly good corporate cards. Just better expense management with the cards you already have.

Key takeaways

• Most modern expense platforms force a card switch. Expensify doesn't.
• Bring your own card (BYOC) means you keep your rewards, history, and workflows.
• Setup takes minutes and requires no technical expertise.
• Transactions import automatically, and employees never have to manually create expenses again.
• Admins love it because they get continuity, control, and central visibility on day one.

Corporate card: What it actually needs to do

A corporate card is just a card. The ability to use a corporate card with an expense management software is what turns a pile of transactions into a closed set of books. That's the line most banks and expense tools blur. They'll happily issue you a card, but the second you ask "where did this $4,200 go?" you're back in a spreadsheet.

Expensify treats the card as a core input. Every swipe lands in the platform in real time, gets matched to a receipt automatically, and gets coded against your GL before your finance team even opens the report. You keep the card issuer you already trust: Amex, Chase, Citi, Bank of America, and more, and add the layer that actually manages the spend.

In practice: a transaction posts, SmartScan pairs it with the receipt, your accounting rules assign the category, and it's sitting in a closed report by the time anyone asks about it.

Business and company credit cards: one system, every card

"Business credit card" and "company credit card" mean the same thing to most finance teams, and the integration story is the same either way. Expensify doesn't care who issued the card. Connect one, connect ten, or connect a mix of providers across departments. They all flow into the same reconciliation workflow.

That matters more as companies grow. A 12-person team might run on a single Amex. A 300-person team is usually running two or three card programs at once because of legacy contracts, acquisitions, or regional banking requirements.

Expensify's job is to make that irrelevant to the person closing the books with every card, every provider, and one export.

Why switching cards shouldn't be the default

Let's be clear about what's happening when expense platforms push you to switch cards: you're being locked into their ecosystem.

Companies like Brex and Ramp pitch their entire platform around using their native cards. They'll tell you their tight integration offers benefits you can't get elsewhere like better controls, more customization, features that only work with their plastic.

Some of that can be true. But here's what they won't say: a one-size-fits-all approach is never best for every company.

According to Joe Kaufman, Expensify's Product & Operations leader: "Companies don't really assume they have to switch cards; they're told they do. Many fintech companies don't allow customers to bring their own cards. But one-size-fits-all doesn't work for every customer."

The reality? Some teams have built substantial rewards programs with their current cards. Others have negotiated custom terms with their bank. And many just don't want to deal with the operational nightmare of replacing every corporate card while the business keeps running.

For these companies, BYOC (bring your own card) with Expensify solves the real problem: getting organized, automated expense management and credit card reconciliation without the forced migration.

See how we stack up against the competition: 

• Expensify vs. Brex

• Expensify vs. Ramp

What is BYOC (and why does it work)?

According to a recent J.D. Power study, 89% of small businesses used a credit card for recent purchases, which is far more than other payment types. Corporate cards aren't going anywhere, and forcing teams to switch them creates unnecessary friction.

BYOC = Bring Your Own Card. Sometimes called "bring your own card BYOC" in the industry, this approach lets you keep your existing corporate card program infrastructure while gaining modern expense management capabilities. Expensify supports direct integrations with major corporate card providers: American Express, Chase, Citibank, Bank of America, and more.

No need to swap plastic or update all your subscriptions. Just connect your existing cards and go.

As Kaufman puts it: "Replacing all your company credit cards is a huge lift. You have to get cards to employees, manage the switch, deal with accounting changes, move existing subscriptions to new cards. With BYOC, you skip all that pain and plug into Expensify on day one."

How corporate credit card integration actually works

When you connect your corporate cards to Expensify through credit card import, transactions flow automatically from your card provider to Expensify in realtime. Every swipe creates an expense entry with merchant details, amounts, and often electronic receipts without employees doing anything manually.

Your finance team gets full visibility and control. Your employees keep using the same cards they already have. Everyone wins.

How to integrate your corporate cards with Expensify

Setting up the corporate credit card software integration is straightforward with no technical expertise required. Here's how it works with major providers.

How to integrate AMEX corporate cards

American Express cards integrate seamlessly with Expensify:

1. Log into your AMEX account through Expensify's secure connection

2. Choose which cards to assign to specific employees

3. Transactions start flowing automatically

Expensify pulls transaction data directly from AMEX, including merchant details and purchase amounts. Electronic receipts are often included automatically.

How to integrate Chase business cards

Chase corporate cards follow a similar process:

1. Use secure login credentials to connect your Chase account

2. Map cards to individual users or teams

3. Enable automatic transaction import

Chase's integration supports eReceipt capture, making it even easier for employees to stay compliant without hunting down paper receipts.

How to integrate Citi business cards

Citibank corporate cards connect through the same straightforward process:

1. Authenticate your Citi account within Expensify

2. Select cards and assign them to cardholders

3. Activate realtime transaction sync

Once connected, all Citi card transactions appear in Expensify automatically, ready for categorization and approval.

How to integrate Bank of America cards

Bank of America's integration offers centralized card mapping:

1. Connect your BofA account securely

2. Map corporate cards to employees from a central admin view

3. Enable automatic expense creation

BofA's integration is particularly useful for larger teams with multiple cardholders, as admins can manage all cards from a single interface.

Other card types

Expensify also supports corporate credit card integration for smaller banks and credit unions through:

• Direct feed connections for banks with API partnerships

• File upload for manual statement imports (CSV, OFX formats)

• Banking APIs that pull transaction data automatically

If your corporate card provider isn't listed above, check Expensify's supported banks list or contact support. Chances are it's already supported.

Get more details here: Company Card Settings

Corporate card policy: enforcement that happens before the swipe, not after

Most "policy" is a PDF nobody reads until an audit. Expensify moves policy into the transaction itself. Set spend limits, category restrictions, and approval thresholds once, and every card transaction gets checked against them automatically. Someone over budget gets flagged in real time, not caught three weeks later in a report you have to send back.

Policy violations show up to admins immediately, which means the conversation with an employee happens while they still remember what the purchase was for.

Expensify vs. bank-issued corporate cards (Amex, Chase, Bank of America)

Amex, Chase, and Bank of America all offer solid corporate card programs and none of them are expense management software. Their online portals will show you a transaction list. What they won't do is match that transaction to a receipt, check it against your spending policy, code it to the right GL account, or push it into your accounting system reconciled.

That's not a knock on the card; it's just not what a card issuer's portal is built to do. Expensify sits on top of whichever card program you've already negotiated (including cards from all three) and adds the automation layer banks don't build: realtime categorization, policy enforcement, receipt matching, and a direct sync to your books.

You don't have to choose between your bank relationship and modern expense software. That's the whole point of BYOC.

What teams love about BYOC

No disruption to operations

Replacing corporate cards mid-year is operationally risky.

As Kaufman explains: "Replacing cards means managing physical handoffs, dealing with accounting changes, moving subscriptions to new cards, all of which take time and carry risk. You can avoid all of that."

What BYOC eliminates:

• Waiting for new physical cards to arrive

• Coordinating card distribution to remote employees

• Updating payment methods for dozens of SaaS subscriptions

• Reconciling expenses across two different card programs during transition

• Training employees on new card policies and platforms

With BYOC, your existing corporate credit card reconciliation software processes stay intact. You're adding automation and visibility, not replacing your entire payment infrastructure.

Setup is surprisingly simple

Most teams assume corporate credit card integration requires IT involvement or technical configuration. It doesn't.

"It's often as easy as logging into your bank and mapping cards to employees. The entire setup process can take just a few minutes." – Joe Kaufman, Product & Operations Leader at Expensify

Typical setup timeline:

• 5 minutes: Connect your card provider account

• 10 minutes: Assign cards to employees

• Instant: Transactions start flowing automatically

No developers, API keys, or complicated technical requirements. Just straightforward authentication and card assignment.

Central admin visibility

Here's a critical setup tip from Kaufman: "The big one is centrally connecting cards for the entire company, rather than having each individual employee import their own card. That means admins have the option to centrally manage all cards."

Why this matters:

When cards are connected at the company level, finance teams can:

• See all card activity across the organization in one dashboard

• Enforce company expense policies consistently across all cardholders

• Update settings or permissions without touching individual accounts

• Monitor spending patterns and identify issues immediately

• Generate custom financial reports that span all corporate cards

Individual employee imports create fragmentation. Central admin setup creates control.

Bring your cards. Bring the control.

Companies don't need to switch cards to gain visibility, automation, and compliance. The assumption that better expense management requires replacing your corporate cards is outdated, and often pushed by platforms that benefit from locking you into their ecosystem.

With Expensify's BYOC approach, you get:

• Day-one integration: Connect existing cards in minutes without waiting for new plastic or lengthy onboarding.

• No disruption: Keep your current rewards programs, banking relationships, and operational workflows intact.

• Zero compromise on flexibility: Choose the cards that work best for your business, not what your expense platform forces on you.

Whether you're running American Express corporate cards, Chase business cards, or a mix of providers, Expensify supports your choices instead of replacing them.

Ready to connect your corporate cards and automate expense management without the switch? Click on the button below to get started with Expensify today.

FAQs about corporate credit card integration

• What is credit card integration?

  Credit card integration connects your corporate cards directly to expense management software, automatically importing transactions in realtime.

  Instead of employees manually entering expenses or uploading receipts, every card swipe creates an expense entry automatically with merchant details and amounts already captured.

• How do I reconcile corporate credit cards?

  Corporate credit card reconciliation matches card transactions against submitted expense reports and accounting records. With Expensify's integration, reconciliation happens automatically. 

  Transactions are imported from your card provider, employees review and categorize them, and the system matches everything to your accounting software. This eliminates manual statement matching and catches discrepancies immediately.

• Why are businesses charged 3% to use a credit card?

  The 3% fee covers merchant processing costs, or what businesses pay to credit card networks (Visa, Mastercard) and payment processors for handling transactions. This includes interchange fees (paid to card-issuing banks), assessment fees (paid to card networks), and processor markup. 

  Many businesses pass these costs to customers, though some absorb them to remain competitive.

• What is the 2-3-4 rule for credit cards?

  The 2-3-4 rule is a guideline for responsible credit card use: apply for no more than 2 cards in 6 months, 3 cards in 12 months, and 4 cards in 24 months. This pacing helps maintain good credit scores by avoiding too many hard inquiries in a short period. 

  For corporate cards, this rule is less relevant since business credit decisions typically don't impact personal credit the same way.

• Can Expensify handle more than one card provider at once?

  Yes, Expensify handles multiple card providers. This means you could have multiple cards across departments and Expensify lets you unify everything under one reconciliation workflow.

• Does Expensify replace my corporate card, or work with the one I have?

  It works with what you have. Connect your existing Amex, Chase, Citi, or Bank of America cards — no new plastic, no renegotiating your card agreement.

• Does Expensify support purchasing cards (P-cards), not just employee T&E cards?

  Yes — P-card transactions import and reconcile the same way as any other card transaction.

• How does Expensify sync with our accounting system?

  Direct, two-way sync with QuickBooks, Xero, NetSuite, and Sage Intacct, plus a native integration with Rillet for teams on continuous close. Categories and tax rates flow in; coded, reconciled transactions flow back out.

• Is there a realtime view of card spend, or does it update on a delay?

  Expensify provides a realtime view. Transactions appear as they post, not on a batch delay.