Hacker, Nelson & Co., P.C. is a public accounting firm serving clients from Northeast Iowa, with locations noted in Decorah, Waukon, and New Hampton. The firm works with a diverse client base that includes individuals, businesses, government, non-profit, construction, and agribusiness clients.

Its services include tax services and tax planning, accounting, bookkeeping, payroll, and help with IRS notices and audits. The firm also references client resources such as SafeSend, payroll tools, tax tools, file upload options, and client portals, supporting organized document exchange and tax-related workflows.

Source materials describe Hacker, Nelson & Co. as a locally owned public accounting firm in Northeast Iowa with CPA credentials, ten principals, and more than 40 full-time employees. Listed software tools include QuickBooks and Peachtree.