When running a US small business in Connecticut, staying on top of tax obligations is critical. Whether you’re a startup or an established business, understanding how to file and pay your Connecticut Business Taxes ensures you remain compliant and avoid unnecessary penalties.
In this guide, we’ll walk you through the essential steps for filing and paying business taxes in Connecticut in 2025, and how accounting services in Connecticut can help simplify the process.
Before filing taxes, you’ll need to register your business with the Connecticut Department of Revenue Services (DRS) through the myconneCT portal. This is the state’s online system for managing business tax accounts.
This registration sets up your tax accounts, ensuring you’re ready to file business taxes once your business operations begin.
For businesses structured as corporations, filing the CT-1120 form is required to report corporate income. This form helps you calculate your business’s tax liability for the year.
By understanding how to file and manage your corporation taxes, you ensure your business remains compliant with Connecticut Business Taxes.
Businesses that sell taxable goods or services must register for a Sales and Use Tax Permit. Connecticut has a statewide sales tax rate, which is applied to most retail sales.
By staying on top of your sales tax obligations, you can focus on growing your US small business without worrying about penalties.
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As an employer in Connecticut, you’re required to withhold income tax from your employees’ wages. It’s essential to ensure that you are complying with state withholding tax requirements.
By adhering to Connecticut’s withholding tax requirements, you’re helping your employees remain compliant with state income tax laws.
If your business is a pass-through entity (like an S Corporation, partnership, or LLC), you may elect to pay the Pass-Through Entity (PTE) Tax.
This step is crucial for pass-through entities that need to fulfill their state tax obligations, so make sure to keep track of quarterly deadlines.
Here’s a quick breakdown of important filing and payment deadlines for Connecticut business taxes in 2025:
Tax payments are exclusively processed through myconneCT. The state no longer accepts paper filings or payments for business taxes, which is why using accounting services or trusted software is recommended.
Navigating Connecticut Business Taxes can seem overwhelming, but with the right tools and knowledge, the process becomes manageable. By following the steps outlined in this guide, you can ensure that your US small business remains compliant with Connecticut’s tax requirements. Registering through myconneCT, filing on time, and making payments electronically will save you time and prevent costly mistakes. For businesses looking to simplify this process, working with accounting services can offer valuable guidance and support every step of the way.
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