Pre-Authorisation

A pre-authorisation (pre-auth) is a hold placed on a cardholder's available credit or bank balance before the final transaction amount is known. The merchant submits an authorisation request for an estimated amount; the issuer places a hold on those funds. When the final amount is settled, the hold adjusts to the actual charge and releases any excess.

Pre-auths are standard practice at gas stations (Automated Fuel Dispensers, AFDs), hotels, and rental car companies because the final amount is unknown at the start of the transaction.

Gas stations: Visa's AFD rules allow gas pumps to pre-authorise up to $175 on credit cards and a lesser amount (varies by card type) for debit. The hold is placed before you know how much fuel you will pump. For debit cards, this freezes checking account funds for 1-7 business days, which can cause overdrafts if other charges post during that window.

Hotels: Hotels typically pre-authorise the total room rate plus an incidental deposit ($50-$150 per night depending on the property). The hold can equal 100-200% of the total stay cost. For debit cards, this freezes checking funds for the duration of the stay plus several days after checkout for hold release.

Rental cars: Rental agencies pre-authorise the estimated rental cost plus an incidental deposit ($200-$500 at many agencies). Most major agencies require a credit card or impose additional requirements (credit check, higher deposit) for debit-card rentals.

Hold release timelines differ between credit and debit. For credit cards, holds reduce available credit but do not affect the bank balance; release is typically 1-3 business days after checkout. For debit cards, holds freeze actual checking-account funds; release is typically 1-7 business days and depends on the bank, not the merchant. The merchant cannot accelerate a debit hold release at most banks.

Regulatory note: Pre-authorisation practices are governed by card network rules (Visa Core Rules, Mastercard Transaction Processing Rules), not directly by Regulation Z or Regulation E. However, if a hold is not released within a reasonable time after settlement, consumers can dispute it with their issuer.