Starting a side hustle in Colorado is exciting, but getting an EIN (Employer Identification Number) is crucial for many ventures. This guide walks you through the process of obtaining an EIN for your Colorado side business in 2026, ensuring you're compliant and ready to grow. You might also find our guide on the Colorado LLC filing process useful here. Lovie's $29 one-time fee covers formation preparation and filing, with compliance reminders included; state filing fees are paid directly to your state, and registered agent service is priced separately at $79/year ($49/year in Wyoming).
An EIN, or Employer Identification Number, is essentially a Social Security number for your business. It's a unique nine-digit number assigned by the IRS to identify your business entity. This connects to our resource on [starting a business in Colorado](https://www.lovie.co/formation/resources/llc-formation/agency-colorado), which covers the details. You'll need an EIN to open a business bank account, hire employees, and file certain business taxes.
| State Filing Fee | $50 |
| Annual Fee | $10 |
| First Year Total | $60 |
| Processing Time | 2.4 days avg (official: 1-2 days) |
| Corporate Tax Rate | 4.4% |
Data sources: State Secretary of State offices, IRS, Tax Foundation (2026). Platform metrics based on anonymized Lovie user data.
Employer Identification Number (EIN) serves as the federal tax identifier required for business banking, hiring, and tax filing. Key components include IRS Form SS-4, federal tax identification, and responsible party designation, each playing a critical role in the ein process. Understanding federal tax ID number and business banking requirement is essential, as these factors directly impact payroll tax compliance.
When evaluating ein options, factors such as ITIN alternative for non-residents and same-day EIN approval should inform your decision-making process.
Ensure your Colorado side hustle requires an EIN. Generally, LLCs with more than one member, corporations, partnerships, and businesses that hire employees need an EIN.
Decide on your business structure (LLC, corporation, etc.). This choice impacts your tax obligations and liability. In Colorado, LLCs are popular for Complete IRS Form SS-4, Application for Employer Identification Number. You can download the form from the IRS website. This form requires information
An EIN allows you to open a separate business bank account, keeping your personal and business finances distinct. This is crucial for liability protection and simplifying your accounting, especially as your side hustle grows.
If you plan to hire employees or independent contractors for your Colorado side hustle, you'll need an EIN to comply with IRS regulations for payroll An EIN is necessary for filing business taxes, claiming deductions, and paying estimated taxes on your side hustle income. This helps avoid penalties
Use your EIN to open a business bank account to keep your personal and business finances separate. This is crucial for liability protection and simplifying your accounting.
Research and apply for any required state and local licenses and permits for your side hustle. Requirements vary depending on your industry and locati Implement accounting software to track your income and expenses. This will simplify tax preparation and help you manage your business finances effecti
Apply for your EIN directly through the IRS — the process is free and typically takes minutes for online applications. See IRS EIN Online Application.
For Colorado-specific filing requirements, visit the Colorado Secretary of State official business portal.
The IRS provides comprehensive guidance on when you need an EIN and how to manage it. See IRS Employer ID Numbers Guide.
Start your formation with Lovie — $29 one-time, plus your state's filing fee.
State-specific formation guides, cost breakdowns, compliance checklists, and expert comparisons — updated for 2026.