Determination of interchange categories

1. One or more computer-readable storage media having computer-readable instructions that, when executed by a computing device, cause the computing device to perform acts comprising:

receiving credit card transaction data from a database for credit card transactions associated with a particular merchant, the credit card transaction data indicating, for one or more credit card transactions, an interchange category assigned by a card issuer;

receiving published interchange-category parameters for the interchange category assigned, the published interchange-category parameters comprising a merchant-status parameter specific to a status of a merchant;

receiving a parameter specific to a status of the particular merchant; and

determining, automatically and without user interaction and for the one or more credit card transactions, whether the interchange category assigned is correct based on whether the merchant-status parameter matches the status of the particular merchant.

2. One or more computer-readable storage media as recited in claim 1 , wherein the merchant-status parameter comprises a business sector, an area of operation, or a taxable or non-taxable status.

3. One or more computer-readable storage media as recited in claim 1 , wherein the published interchange-category parameters further comprise at least one transaction-status parameter, the acts further comprising:

receiving a parameter specific to a status of the one or more credit card transactions; and

determining, automatically and without user interaction and for the one or more credit card transactions, whether the interchange category assigned is correct based on whether the transaction-status parameter matches the parameter specific to the status of the one or more credit card transactions.

4. One or more computer-readable storage media as recited in claim 3 , wherein the transaction-status parameter comprises at least one of an indication of whether a credit card is present or not present at the time of a transaction, an indication of whether a signature is included with a transaction, an indication of whether a credit card is a business card or a personal card, an indication of whether a tax code is included with a transaction, or an indication of whether a ZIP code is included with a transaction.

5. One or more computer-readable storage media as recited in claim 1 , wherein the database comprises a relational database.

6. One or more computer-readable storage media as recited in claim 1 , wherein said act of receiving credit card transaction data retrieves the credit card transaction data using an Extract portion of an Extract, Transform, and Load (ETL) process, and the act of determining uses a Transform portion of the ETL process.

7. One or more computer-readable storage media as recited in claim 6 , further comprising presenting the results of the act of determining using a Load portion of the ETL process.

8. One or more computer-readable storage media as recited in claim 1 , further comprising, prior to the act of receiving the credit card transaction data:

extracting text-format, pre-transformation credit card transaction data;

transforming the text-format, pre-transformation credit card transaction data into data in a machine-usable format; and

loading the data in the machine-usable format into the database, wherein the act of receiving the credit card transaction data receives the credit card transaction data in the machine-usable format.

9. One or more computer-readable storage media as recited in claim 1 , wherein the act of receiving comprises receiving credit card transaction data for multiple merchants, each of the multiple merchants and the particular merchant: having a merchant identifier; having received or batched customer purchases during a same time period; and being associated with a single client through their respective merchant identifiers.

10. One or more computer-readable storage media as recited in claim 1 , wherein the one or more credit card transactions are transacted with branded credit cards or processed through a network associated with a branded credit card.

11. One or more computer-readable storage media as recited in claim 1 , further comprising determining, automatically and without user interaction, for the one or more credit card transactions, a correct interchange category for the one or more credit card transactions based on other merchant-status parameters for another interchange category matching the particular merchants status.

12. One or more computer-readable storage media as recited in claim 1 , wherein said determining comprises determining that the interchange category assigned is incorrect, the acts further comprising providing a report, in a human-readable format, indicating that the one or more credit card transactions were assigned an incorrect interchange category.

13. One or more computer-readable storage media as recited in claim 1 , wherein said determining comprises determining that the interchange category assigned is incorrect, the acts further comprising determining a savings for the one or more credit card transactions by determining a correct fee for a correct interchange-category and subtracting the correct fee from a fee charged based on the interchange-category incorrectly assigned.