Tax, Bookkeeping & Business Formation — Serving Tucson Since 1987

Tax, Bookkeeping & Business Formation Services

Comprehensive business startup support, full-charge bookkeeping, and expert tax preparation & IRS defense backed by Federally Licensed Enrolled Agents and 39+ years of experience in Tucson.

Call to Schedule a Business Consultation

One Office for Every Stage of Your Business

From the day you file your Articles of Organization to the day you file your annual return, Maria Saenz & Associates is your single point of contact for business formation, ongoing bookkeeping, payroll, and tax preparation — all under one roof at 425 W. Ajo Way, Tucson.

Our Federally Licensed Enrolled Agents hold the highest IRS credential available to non-attorneys, giving your business an expert advocate for tax preparation, ITIN processing, and IRS audit defense — backed by 39+ years of Southern Arizona experience.

Three Pillars of Business Support

Formation, bookkeeping, and tax defense — every stage of your business lifecycle covered under one roof.

LLC · Corp · Operating Agreements · ACC · EIN · BOI

Arizona Business Formation & Corporate Compliance

We prepare and file everything needed to legally establish your Arizona business entity and keep it federally compliant from day one.

  • Articles of Organization (LLC) or Articles of Incorporation (Corp)
  • Arizona Corporation Commission (ACC) filing and registration
  • Operating Agreement and Partnership Agreement preparation
  • Statutory agent service coordination
  • Federal Employer Identification Number (EIN) acquisition
  • BOI FinCEN Beneficial Ownership Information reporting
  • S-Corp tax election filing (Form 2553)
Monthly Reconciliations · P&L · Form 941 · AZ A1-R · TPT

Full-Charge Bookkeeping & Payroll

Accurate, up-to-date books and compliant payroll processing so you can focus on running your business — not chasing paperwork.

  • Monthly bank and credit card account reconciliation
  • Profit & Loss (Income) Statement and Balance Sheet preparation
  • General ledger maintenance and clean-up
  • Direct deposit payroll setup and processing
  • Quarterly federal payroll tax filings (Form 941)
  • Arizona quarterly withholding filings (Form A1-R)
  • Monthly Arizona Transaction Privilege Tax (TPT / Sales Tax) reporting
  • W-2 and 1099 preparation at year-end
Individual · Corporate · ITIN · Audit Representation

Tax Preparation & IRS Defense

Individual and corporate tax returns, ITIN processing, and full IRS audit representation — handled by our Federally Licensed Enrolled Agents, the highest IRS credential available to non-attorneys.

  • Individual federal and Arizona state income tax preparation
  • Corporate, partnership, and LLC tax return preparation
  • ITIN (Individual Taxpayer Identification Number) application processing
  • IRS audit representation and correspondence defense
  • Back-tax resolution and installment agreement assistance
  • Tax planning consultations for individuals and small businesses
  • Bilingual tax services available (English & Español)

Why Businesses Choose Us

39+ Years of Arizona Business Experience

Since 1987, we've helped hundreds of Tucson-area businesses get started, stay compliant, and file accurately. We know Arizona's requirements inside and out.

Federally Licensed Enrolled Agents on Staff

Our Enrolled Agents hold the highest IRS credential available to non-attorneys — authorized to represent clients before the IRS for audits, collections, and appeals.

Formation, Books, Taxes — One Office

Entity formation, bookkeeping, payroll, tax prep, and IRS defense all under one roof at 425 W. Ajo Way. No need to coordinate between multiple firms.

Bilingual Service (English & Español)

Our bilingual team serves Tucson's diverse business community in both English and Spanish — so nothing gets lost in translation.

Office Hours & Location

Office Hours

  • Monday10:00 AM – 5:00 PM
  • Tuesday11:00 AM – 5:00 PM
  • Wednesday10:00 AM – 5:00 PM
  • Thursday10:00 AM – 5:00 PM
  • Friday10:00 AM – 5:00 PM
  • Saturday – SundayClosed

Appointments are recommended. Our team may be at client consultations or court appointments — calling ahead ensures we're ready for you.

Visit or Call Our Office

Appointments are recommended for business consultations. Walk-ins are welcome during office hours when staff is available.

(520) 628-1667

Main Office

425 West Ajo Way, Tucson, AZ 85713

Ready to Start, File, or Get Your Books in Order?

Call us or book a consultation online. Our team handles formation, bookkeeping, payroll, tax prep, and IRS defense — all in one place.