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Fare Calculation and Submission Workflow {#um-workflow-fare-calc}
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The fare calculation workflow begins at the end of the travel period.

#### Figure:

Visa Fare Calculation and Submission Workflow  
![Diagram showing Visa Fare Calculation and Submission Workflow](/content/dam/documentation/cybs/en-us/topics/payments-processing/card-processing/mass-transit/images/fare-calculation-submision-workflow-430x600.svg/jcr:content/renditions/original)

1. The back office calculates the fare of all rides taken during the travel period.
2. You request a sale transaction for the accumulated fare. See [Visa Deferred Sale with EMV Data](/content/cybsdeveloper2021/amer/en/docs/cybs/en-us/urban-mobility/developer/ctv/rest/mass-transit/um-processing-sale-deferred-intro.md "").
3. When the sale is successful, the process is complete.
4. When the sale is declined, the card hash is added to the deny list.
5. When the declined sale amount is above the chargeback threshold, the transaction is moved to debt recovery. See [Debt Recovery Workflows](/content/cybsdeveloper2021/amer/en/docs/cybs/en-us/urban-mobility/developer/ctv/rest/mass-transit/um-workflow-intro/um-workflow-followon/um-workflow-debt-recovery.md "").
6. When the declined sale amount is for a first ride and below the chargeback threshold, you can request the payment using the first ride risk chargeback rules as defined by each card scheme.
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