A FAMILY-OWNED ACCOUNTING FIRM Founded in 2007, Granite Mountain Accounting, LLC is a family-owned accounting firm in Las Cruces, New Mexico. Serving New Mexico and Arizona, we specialize in helping small businesses, non-profits, trusts, and corporate organizations as well as individuals by providing comprehensive accounting services. Our services include tax representation, compliance services, writeup/bookkeeping, payroll processing, sales tax filing, and financial statement preparation. We can also advise regarding any tax law changes that may impact your filing for the year.