The International Service Assessment (ISA) fee only applies in situations where a US-based business accepts a Visa card issued by a non-US Bank. If you take card payments from foreign visitors in person or accept foreign transactions online, you may see the ISA fee as part of your processing costs.
Visa's Assessment Fees
The ISA is one of many assessment fees that Visa charges. While assessments are typically small, the international service assessment (and other international fees) are among the highest due to the increased risks of foreign transactions. Additionally, multiple assessments can apply to a single transaction. Visa sets assessment rates, and they're the same for everyone. Processors don't negotiate assessments individually for each business. CardFellow maintains a list of the assessments and current rates. You can view that list here: Visa Assessment Fees.The International Service Assessment
One of Visa's assessment fees is the International Service Assessment, or ISA. Like the International Acquirer Fee, the ISA fee applies to all transaction involving a U.S.-based business and a foreign card issuer. The ISA is separate from interchange, and from Visa's standard assessment fee, which is currently 0.13%. These fees can apply together. For example, an ISA fee of 1.00% will be added to a transaction where a customer pays using her Visa-branded credit card that is issued by a bank based outside of the United States. Since the ISA is separate from interchange and other assessments, Visa's total assessment on this type of transaction is the sum of the ISA fee (1.00%), the standard credit assessment (0.14%), and the International Acquirer Fee (0.45%). The transaction would incur 1.59% in assessment fees. That amount is in addition to the costs of interchange and the processor's markup.Locating the ISA Fee on Statements
The ISA fee may or may not be present on your monthly credit card processing statements. Businesses on a flat rate pricing model will not see assessments broken down individually. (Although you're still paying them! It's just lumped in to your flat rate.) Businesses on tiered or interchange plus pricing will usually see assessments as individual line items. Your processor may group them by card brand or simply list them all without breaking them down further. Fortunately, many processors list the international assessments by easily recognizable names. In the statement snippet below, the processor abbreviated the fee, but it's still easy to tell it's the international service fee.ISA and IAF Together
While the example statement above only listed the ISA fee, in many cases you'll be charged both the ISA and IAF. In the example below, the processor charged both fees on the same transactions. Again, they're listed clearly by name. In this statement, the processor also included the rate it charged the business. If you wanted to do the math anyway, you could simply multiply the total transaction volume (3095.30) by the rate (0.008 as the decimal version of 0.8000%.) You then get $24.7624, which rounds to $24.76 - exactly what the processor charged. For this statement example, I condensed the fees so they were right next to each other. However, your processor may not necessarily list the assessments together. Be sure to check the entire fees section if you're looking for particular fees.
Remember, you may not see the ISA fee on statements even if other assessments are listed. You'll only see the fee in months where you've accepted a foreign-issued card.
