You Shouldn't Have to Switch Corporate Cards to Automate Expenses

There's a reason so much modern spend software is free: it isn't software revenue, it's card revenue. When a platform issues your corporate cards, it earns interchange — a slice of every transaction — and the software is the funnel that gets your spend onto their card. Free is the price of the funnel.

That model built some genuinely good products. But it comes with a quiet requirement that doesn't appear on the pricing page: your spend has to move.

What switching cards actually costs

Moving a company's card program is not like installing an app:

• Banking relationships. Your cards often live where your operating accounts, credit facilities, and treasury services live. Fragmenting that relationship can have real costs — sometimes contractual ones.
• Credit and underwriting. A new card program means new limits from a new underwriter, on their terms, often prefunded or secured in ways your bank's program isn't.
• Rewards and rebates. Established programs accumulate negotiated rebates, points structures, and partner benefits that reset to zero when you move.
• Operational churn. Every recurring vendor charge — every SaaS subscription, utility, and supplier on file — has to be re-carded. Anyone who has done this migration remembers it.

For some companies the trade is worth it. But it should be a deliberate treasury decision, not the hidden toll for getting your expenses coded automatically.

The decoupled alternative

Bring-your-own-card (BYOC) expense management splits the two decisions apart. Your cards stay exactly where they are — same bank, same limits, same rewards. The software connects to them read-only (Summit Spend does this via Plaid, the same connection infrastructure behind thousands of financial apps) and takes over everything downstream of the swipe:

• Transactions sync automatically, no imports
• Rules and AI code each charge to your real GL accounts and ERP dimensions
• Receipts match themselves via OCR and email forwarding
• Approvals and policies run in the system, not over email
• Coded, approved, posting-ready transactions export to Sage Intacct or QuickBooks Online in one click

The economics are transparent, too: a per-user subscription instead of interchange. You can put the price on a line item and compare it to hours saved — no hidden monetization riding on where your spend lives.

When an issued-card platform IS the right call

To be fair to the other model: if you're a startup without an established banking relationship, or you actively want prefunded cards with hard spend controls at the point of authorization, an issuing platform is a reasonable choice — point-of-sale control is something only the card issuer can do.

But if you're an established company with cards you like at a bank you like, "switch your card program" is a big ask for what is, at core, a coding-and-receipts problem.

The question to ask any spend platform

"What does your product do for cards you didn't issue?"

If the honest answer is "less," you know how the incentives point. Your expense automation shouldn't depend on where your interchange goes.