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Bookkeeping

Small Business Bookkeeping in Aurora, CO

Are Your Books Clean, Current, and Tax-Ready?

When bookkeeping falls behind, stress builds quickly. Receipts pile up, bank accounts go unreconciled, and tax time becomes overwhelming. Mark Christiansen Associates LLC provides structured, month-by-month bookkeeping in Aurora to keep your records organized, accurate, and ready for reporting. With secure document exchange and direct phone access to our local office, you’re never left guessing about your numbers.

What’s Included in Our Bookkeeping Services

Clear deliverables reduce confusion. Our bookkeeping services near you typically include:


  • Monthly bank and credit card reconciliation
  • Categorization of income and expenses
  • Financial statements (Profit & Loss, Balance Sheet)
  • General ledger maintenance
  • Payroll coordination support (if applicable)
  • Sales tax tracking and reporting support


The goal is simple: clean, reliable books that make decision-making easier and tax preparation smoother.

Bookkeeping Workflows We Offer

Ongoing Monthly Bookkeeping

Consistent monthly bookkeeping keeps your records current and prevents year-end surprises. Each month closes with reconciled accounts and updated financial statements.


Catch-Up & Cleanup Services

Behind on your books? We can review prior periods, reconcile accounts, and correct inconsistencies so you can move forward with confidence. This is often requested before loan applications, tax filings, or major business decisions.


QuickBooks Bookkeeping Support

We provide QuickBooks bookkeeping assistance, including setup, transaction review, and process improvement. If you’re unsure whether your file is configured correctly, we can assess and streamline it.

Common Concerns We Help Solve

“I don’t want my books to be a mess at tax time.”

 Month-by-month reconciliation keeps everything organized and tax-ready.


“Can you clean up my books?”

 Yes. Cleanup projects are common, especially for growing small businesses that started with DIY bookkeeping.


“Do you do QuickBooks bookkeeping?”

 Yes. We work with QuickBooks users who want oversight, structure, or full-service monthly management.


“How much does bookkeeping cost per month?”

Cost depends on transaction volume, account complexity, payroll needs, and reporting requirements. Rather than publish flat numbers that may not fit your situation, we review your scope and provide clear guidance. Detailed pricing information is available on our Fees & Pricing page.

Who Our Bookkeeping Services Are For

  • Small business owners
  • Contractors and self-employed professionals
  • S-corporations, partnerships, and LLCs
  • Businesses preparing for growth, financing, or restructuring


Colorado and Denver-area businesses often face layered tax and reporting requirements. Clean books help ensure compliance and reduce avoidable issues at filing time.

Common Bookkeeping Mistakes That Cause Problems

  • Skipping monthly bank reconciliation
  • Mixing personal and business expenses
  • Ignoring sales tax tracking
  • Relying on outdated QuickBooks setups
  • Waiting until year-end to review financials


These issues are preventable with consistent bookkeeping oversight.

What to Expect When You Start

Working with Mark Christiansen Associates LLC begins with a review of your current records and bookkeeping system. We clarify scope, define responsibilities, and outline a structured monthly close process. Secure file exchange options make document sharing simple and organized. From there, you’ll have reliable financial reports and a local team you can call when questions come up.

Ready for Organized, Reliable Books?

Strong bookkeeping supports better decisions, smoother tax filing, and fewer surprises. Whether you need monthly bookkeeping, QuickBooks support, or cleanup services, our Aurora-based team is ready to help.