Assists with specialized federal tax-related services at the IRS taxpayer assistance center in Mountainside, covering account inquiries, adjustments, alien clearances, taxpayer assistance order applications, basic tax law inquiries, Form 2290 preparation, individual taxpayer identification numbers, multilingual aid, payment arrangements, procedural inquiries, tax issue resolutions, and tax form assistance. Note: Taxpayer assistance centers no longer provide tax return preparation services, directing inquiries to alternative resources such as free file and VITA.