Guides·Implementation guide

Switching payment processors with less downtime risk

Do not cancel the current system until the replacement is approved, configured, tested, and proven to fund correctly.

8 min read · by Derived Editorial Team · updated Aug 15, 2026

Step 1: application and underwriting

Gather the business details, ownership information, banking evidence, and processing history required by the prospective provider. Keep the current account running while the application is reviewed; underwriting timing and document requirements vary by merchant and provider.

Step 2: approval and staging

Underwriting timing depends on the merchant profile and completeness of the application. While review is underway, prepare the menu or catalog, taxes, tip settings, printers, users, integrations, and any compatible existing equipment for testing.

Step 3: installation and parallel running

Configure and test the equipment before cutover. Schedule installation for a slower operating period, train managers and staff on the required workflows, and run live test transactions while the old system can still accept cards. Keeping both paths available reduces avoidable downtime risk.

Step 4: verify funding, then cancel

Confirm deposits, tips, reports, refunds, integrations, and other required workflows before cancelling the old account. Review the old agreement and final statement for notice requirements or exit charges, and retain written cancellation confirmation.

What your staff actually needs

Give each station a short workflow reference, assign a manager who knows the void and refund process, and keep the support path available. Training time varies. The highest-risk details often sit at the edges: gift-card balances, online-ordering links, loyalty data, printers, taxes, and integrations that were not exercised during a basic demo.

What it costs

The merchant’s costs depend on the current agreement, selected hardware and software, implementation scope, and the new provider’s written terms. Derived may be compensated by a selected provider; that relationship and every merchant obligation should be disclosed before commitment.