Tax & Accounting Services for Every Stage
Year-Round Tax Planning
Clear Answers, Local Service, & Full-Service Support
Finding the right tax or accounting support shouldn’t feel complicated. Whether you’re an individual, business owner, or nonprofit, Mark Christiansen Associates LLC has helped clients across Aurora and the Denver area since 1986. Our team pairs responsive service with clear, secure tools and the guidance you need for tax season, IRS notices, business growth, or planning for the future. Not sure which service fits? Use the guide below or reach out for help—there’s always a real person ready to answer your call.
Services That Bring Clarity and Relief
Tax Preparation Services
Annual tax returns filed accurately and on time, for individuals, families, businesses, and nonprofits. Our secure portal makes uploading documents simple—no paperwork lost, no guessing about next steps.
Tax Planning Services
Strategies to minimize surprises and reduce your tax burden—year-round, not just at filing time. Get personalized plans for retirement, investments, or business changes, with a focus on clarity and compliance.
Bookkeeping Services
Hands-off bookkeeping so you can focus on your work, not the paperwork. Monthly reconciliations, reporting, and advice for small businesses and nonprofits—always with secure online access.
IRS Tax Help / Tax Problem Resolution
If you’re facing IRS letters, audits, or back taxes, we provide calm, step-by-step support. Mark Christiansen Associates LLC is trusted for IRS representation and practical solutions—never judgment, just progress.
Financial Planning Services
Comprehensive planning for your future—retirement, college, investments, or growing your business. Our local team combines experience with a personal touch for every stage of your financial life.
Estate Planning Services
Wills, trusts, and strategies to protect what you’ve built. Guidance that’s practical, local, and tailored to your family’s needs—so your wishes are honored and your loved ones prepared.
What Service Is Right for You?
Individuals & Families
Need help with annual returns, planning, or IRS notices? Our tax prep, planning, and problem resolution services are designed for you.
Small Business Owners
Running a business or nonprofit? Bookkeeping, payroll, tax filing, and planning support—everything you need, tailored to your field.
IRS or Tax Problems
Letters, audits, back taxes, or confusion about what to do next? Start with our Tax Problem Resolution services for step-by-step answers.
Trusted Since 1986
Local, Credentialed, and Here When You Need Us
Clients across Aurora and surrounding areas choose Mark Christiansen Associates LLC for decades of proven service, deep community roots, and responsive support. As members of the National Society of Accountants, we stay current so you get reliable guidance—every year, every change, every challenge.