At CBO Accounting & Advisory Services, we offer comprehensive tax and administrative compliance services to help your business meet all required obligations without complications—whether you are located in Minneapolis, the Twin Cities, or other cities across Minnesota.
We monitor deadlines, prepare required filings, and verify that you stay compliant with the IRS, your state, and other regulatory agencies.
As a business owner in the United States, you have multiple tax and administrative obligations with the IRS, your state (such as Minnesota), and in some cases your city or county. Tax deadlines, annual reports, renewals, estimated payments… it is easy to miss a requirement and end up with penalties, interest, or legal issues.
Stop living with the constant doubt of “Am I forgetting something?”. With our compliance service, you gain peace of mind knowing someone is monitoring your tax and administrative calendar for you all year long.
This tax compliance service in Minnesota and across the United States is especially important for:
LLCs registered in Minnesota or other states
LLCs, S‑Corps, or Corporations registered in Minnesota or other states
Partnerships and businesses with one or more partners
Businesses with employees and payroll tax obligations
Any business that wants to avoid unpleasant surprises from the IRS or the state
Any business that wants to avoid unpleasant surprises from the IRS or the state.
Other Services
Staying compliant with the IRS, your state, and your city should not be a daily burden. CBO manages your business compliance calendar so you can focus on growth in Minneapolis, Minnesota, and across other U.S. states.
As a business owner in the United States, you need to be clear on key dates for filings, estimated payments, and forms with the IRS. This calendar summarizes some of the most important federal dates for small businesses, self‑employed individuals, LLCs, and corporations in 2026.
Note: This is a general overview for 2026. Dates may change depending on your entity type, state, whether you filed an extension, or if the IRS adjusts any deadlines. For full details, review IRS Publication 509 and the official online calendar.
| Date | Main obligation | Who it generally applies to |
|---|---|---|
| January 15, 2026 | Q4 2025 estimated tax payment | Self-employed and businesses with federal estimates |
| January 31, 2026* | Delivery of W-2 and 1099-NEC forms to employees/contractors | Businesses with employees and independent contractors |
| March 16, 2026** | 2025 S-Corp and Partnership annual returns (Forms 1120-S, 1065) | S-Corps and Partnerships with calendar year |
| April 15, 2026 | 2025 C-Corp and sole proprietor annual returns (Forms 1120, 1040 Schedule C) + Q1 2026 estimated payment | C-Corps, sole proprietors, single-member LLCs, some LLCs |
| June 15, 2026 | Q2 2026 estimated tax payment | Self-employed and businesses with estimated payments |
| September 15, 2026 | Q3 2026 estimated tax payment + extended deadline for S-Corps and Partnerships with extensions | Businesses with estimates and entities on extension |
| October 15, 2026 | Extended deadline for C-Corps and sole proprietors with extensions | C-Corps and individuals who requested an extension for 2025 |
| January 15, 2027 | Q4 2026 estimated tax payment | Self-employed and businesses with estimated payments |
| Various dates year-round | Payroll tax deposits (monthly/semi-weekly, depending on your schedule) | Businesses with employees and payroll withholding |
* In 2026, some “end‑of‑month” deadlines that fall on a weekend move to the next business day, but for clarity they are listed here with their typical reference date.
*The standard S‑Corp/Partnership deadline moves to March 16 because the 15th falls on a weekend.
To see the complete calendar, updated directly by the IRS (including payroll, excise, and form‑specific dates), visit:
Need help with these requirements?
Our experts are ready to guide you today.
FAQs
It depends on the obligation, but it can result in penalties, interest, loss of good standing, and even more serious legal issues. Our service exists precisely to help you avoid getting to that point.
The compliance service focuses on monitoring your obligations and making sure you stay on time. Tax return preparation can be included as part of a bundled package or hired separately, depending on your needs.
The cost depends on your entity type, the number of states in which you operate, and how many obligations need to be monitored. We offer an initial consultation to review your situation and provide clear, upfront pricing.
Any formally registered business (LLC, S‑Corp, Corporation, or Partnership) can benefit from this service. Even if you are a sole proprietor with employees or you collect sales tax in your state, you already have obligations that need to be monitored.
Yes. CBO Accounting & Advisory Services handles your tax compliance throughout the year, either as a standalone service or working alongside your current accountant. We provide solutions that make your accounting easier and support your overall financial peace of mind.
We help you assess your situation, get caught up, and—when possible—explore options to reduce penalties or negotiate with the IRS and your state.
Although our office is located in Minneapolis, we support businesses throughout Minnesota and in other U.S. states, always offering professional assistance in both Spanish and English.
Latest Articles
Already a client?
Log in to the Client Portal and you can
Only a few days left until the April 15 tax deadline. Don’t wait!
