Credit Card Authorization Form Template

Hotels and short-term rentals collecting incidental charge authorization, medical and dental clinics billing copays or no-show fees, veterinary and pet-boarding businesses handling extended stays, marketing agencies and freelancers setting up monthly retainers, auto repair shops authorizing additional work mid-job, equipment rental companies covering damage deposits, and any B2B operations team that needs documented payment consent before invoicing.

Most credit card authorization templates online are static PDFs — you download one, print it, fax it, scan it, and pray nothing typo'd along the way. FlexForm gives you the same legally useful document as a live form that signs itself on a phone, with the signature attached to the record automatically. The form is fully customizable without writing code. If you need to add a hotel folio number, a clinic patient ID, or a different consent paragraph for your jurisdiction, describe what you want changed in plain English and the AI editor rewrites the field. You can drop the form behind your own subdomain, share it as a plain link, or embed it on your booking confirmation page — and if you run an Android or iOS app, the Kotlin Multiplatform mobile SDK lets you embed the same form natively so cardholders never leave your app. Submissions flow straight into Google Sheets for your finance team, ping a specific channel in Slack when a high-value authorization comes in, or fire a webhook into your billing system. The free forever plan covers everything most small operations teams need — paid plans add higher submission volumes and team seats when you outgrow it.