DANNEELS
TAX ADVISORS
Your confidence in taxes is our mission
Professional tax preparation and accounting services for businesses and individuals
We combine expertise, accuracy, and a personal approach to help you stay compliant, minimize risks, and grow with confidence
● Tax Preparation — Federal & State
● Business Formation & Compliance
● Payroll & Accounting
// OUR SERVICES
For Individuals — Personalized tax planning and preparation
Personalized tax preparation and planning for every life situation.
We assist individuals with federal and state income tax returns, amended returns, and year-round planning.
Main services:
- Individual Tax Preparation
- Prior-Year and Amended Returns
- Financial and Retirement Planning
- Maximizing Credits and Social Security
- Cryptocurrency and Online Income Reporting
- Financial Statements for Mortgage or Loan
- Tax Consultations for Major Life Events
For Businesses
Reliable accounting and tax support for small business owners.
We provide a full range of services for entrepreneurs, LLCs, corporations, and self-employed professionals — from registration to ongoing compliance.
Main services:
- Business formation (LLC, Corporation, Partnership, DBA)
- Business dissolution or closure
- Sales Tax registration and filing
- Business tax returns (Forms 1065, 1120, 1120-S)
- Payroll reports and compliance (Forms W-2, 1099, 941, 940)
- Monthly and quarterly bookkeeping
- Tax planning for business owners
- Cash-flow and expense optimization consulting
- EIN / ITIN registration and renewal
For International Clients
Professional guidance for nonresidents, expats, and foreign investors.
We help international taxpayers stay compliant and avoid double taxation.
Main services:
- Nonresident Tax Returns (Form 1040-NR)
- ITIN Application & Renewal (Form W-7)
- International Tax Consulting
- FBAR Filing (Foreign Account Reporting)
- Tax Planning for Expats and Students
Tax Problems &
IRS Representation
Trusted help when you need to resolve issues with the IRS.
We represent clients before the IRS and state agencies, helping reduce penalties and restore peace of mind.
Main services:
- IRS & State Representation
- Installment Agreements
- Offer in Compromise
- Penalty Abatement
// ABOUT US
Olena Danneels is a dedicated tax professional with over 15 years of accounting and taxation experience gained in Ukraine, followed by several years of professional practice in the United States.
Her career began in Odessa, Ukraine, where she earned a Bachelor’s degree in Business Administration from Odessa National University of Economics, specializing in accounting and audit.
For over 15 years, she worked as an accountant, managing payroll, financial reporting, and tax compliance for various companies and industries.
After relocating to the U.S., Olena expanded her expertise to include American tax law and compliance, completing an Associate Degree in Accounting at Oakland Community College (Michigan) and earning the IRS Annual Filing Season Program (AFSP) certification. Her name is publicly listed in the IRS Directory of Federal Tax Return Preparers, confirming her verified status and professional credentials.
After gaining practical experience working for several American companies, Olena decided to establish her own tax practice — combining her knowledge, precision, and dedication to help individuals and small business owners across multiple states.
Today, she successfully combines European precision with American tax expertise, helping individuals and small business owners stay compliant and confident across multiple states.
// CONTACT FORM
Hello,
Let’s discuss your situation so we can better understand your objectives and explore how Danneels Tax Advisors LLC can assist you in reaching your goals. Please share as many details as you find necessary and attach any documents that may be relevant to your inquiry.
At Danneels Tax Advisors LLC, we make every effort to respond to all website inquiries within 48 business hours. Please submit your request, and a member of our team will get in touch with you shortly.
You can message us in any messenger that’s convenient for you
// FREQUENTLY ASKED QUESTIONS
How much does it cost to prepare a tax return?
The cost depends on the type and complexity of the return.
• For individuals, it varies depending on the number of forms, states, and additional credits.
• For businesses or LLCs, the cost depends on the company structure and reporting level.
Before we begin, you always receive an accurate cost estimate, with no hidden fees.
Is a free consultation available?
Yes. An initial 15-minute consultation is complimentary for new clients. During this time, we review your situation, explain what documents are needed, and provide an estimated service fee. We also offer a 30-minute consultation for clients who require a more detailed review or have additional questions.
How long does it take to prepare a return?
Most individual tax returns are completed within 3–5 business days after all documents are received.Business and multi-state returns may take up to 7–10 business days depending on complexity and filing deadlines. For the convenience of my regular clients, all accounts are automatically placed on extension, so no one misses the filing deadline even if documents arrive later in the season.
Do I have to come in-person for any of the services mentioned above?
All services can be completed 100% online. You can securely send your documents by email or through encrypted file-sharing, and we handle everything electronically — including e-signatures and payment.
What documents do I need to provide?
It depends on your filing type, but usually: Individuals: W-2s, 1099s, 1098s, ID, dependent info, prior-year return, and any deductible expenses. LLC/S-Corp: income statements, expenses, 1099-NEC/INT, payroll reports, and bank statements. A full checklist is provided once we confirm your filing type.
Do you prepare adjustments or returns for previous years?
Yes. We prepare amended returns (1040-X, 1120-X, etc.) and also file missing returns for prior years — including IRS and state compliance support if there are penalties or refund opportunities.
Do you provide accounting services and help with business registration?
Yes. We offer monthly bookkeeping, payroll, sales tax filing, and business setup — including LLC/S-Corp registration, EIN, and tax elections in any U.S. state. We also assist with MyTax Illinois, Michigan Treasury Online.
// TESTIMONIALS
What our clients have to say about us
