Quick answer — South Dakota's banking market is national, not local. With no usury ceiling, card issuers domiciled here serve customers in every state, which makes the language question a nationwide one answered from Sioux Falls.
The customers are not in South Dakota
Removing the interest-rate ceiling brought the credit card industry here decades ago, and the accounts booked in Sioux Falls belong to people in Los Angeles, Miami and Queens. The bank is in South Dakota. The customer base is the country. So a South Dakota card issuer's language plan is a US language plan. It has nothing to do with the state's own demographics, and reading it off local census data produces something almost perfectly wrong.
Card servicing is where the volume is
Statements, minimum-payment disclosures, dispute correspondence, hardship programmes and collections. All short, all repetitive, all high-frequency across millions of accounts.
That profile is the strongest case for translation memory anywhere in banking, because a few thousand phrases carry tens of millions of messages.
Collections is the part that gets skipped
Acquisition and statements get translated. Hardship and collections correspondence often does not, and that is where a customer most needs to understand their options.
It is also where a regulator looks.
Sioux Falls has its own small book
The city has taken decades of resettlement, so Nepali, Somali and Amharic appear locally. It is a genuine need and a tiny one next to the card book.
Where to start
The hardship and collections set, in Spanish first, for the national book.
Document translation handles statement templates and quality control gives the record an examiner will ask for. See US banking translation.
FAQ
What brought the card industry to South Dakota? The removal of the interest-rate ceiling, which let issuers price nationally from a Sioux Falls charter. A large trust and custody industry followed for related reasons, and neither depends on local customers.
Should a South Dakota card issuer use state demographics? No. Reading a language plan off local census data produces something almost perfectly wrong, because the customers are in Los Angeles, Miami and Queens rather than in South Dakota.
Which card content most needs translating? Hardship and collections correspondence. Acquisition and statements usually get translated, while the material a customer most needs to understand often does not, and that is where a regulator looks.
Does South Dakota have a local language need too? Yes, a small one. Sioux Falls has taken decades of resettlement, so Nepali, Somali and Amharic appear locally, though it is tiny next to the national card book.
