Connecticut Pass-Through Entity Tax: Should Your Business Elect It?
The Connecticut Pass-Through Entity Tax election can have a significant impact on your business’s overall tax liability. For eligible partnerships and S corporations, it offers an opportunity to reduce federal income taxes by paying state income tax through the business. Whether the election delivers a net benefit depends on the Connecticut tax cost and each owner’s individual tax position.
For partnerships and S corporations, the decision should be part of annual tax planning. Understanding the federal deduction and the Connecticut tax credit can help owners determine whether the election will reduce their overall tax bill.
Recent changes to the federal state and local tax deduction limit make this review especially important. An election that made sense in a previous year may produce a different result today.
What Is the Connecticut Pass-Through Entity Tax?
The Connecticut Pass-Through Entity Tax, also called the PE Tax or PTET, allows eligible businesses to pay a state income tax at the business level. Normally, income from a pass-through business flows to its owners and is reported on their tax returns.
Connecticut applies a 6.99% tax rate to the income subject to its PE Tax rules. The calculation includes modified Connecticut source income and, when applicable, the resident portion of unsourced income. This amount may differ from the business’s total profit. portal.ct.gov
The potential federal benefit comes from the business’s deduction for qualifying tax payments. Under IRS Notice 2020-75, qualifying state income taxes paid by a partnership or S corporation are deductible when calculating the entity’s federal income. These payments fall outside the SALT deduction limit that applies to individual taxpayers. www.irs.gov
This deduction can reduce the taxable income passed through to owners. The next step is determining whether those federal savings outweigh the state tax cost.
Which Businesses Are Eligible for the Connecticut Pass-Through Entity Tax Election?
Partnerships and S corporations that conduct business in Connecticut or earn income derived from Connecticut sources may elect the tax. This includes LLCs classified as partnerships or S corporations for federal income tax purposes.
Eligibility is determined by the business’s federal tax classification rather than its legal structure. Sole proprietors and single member LLCs treated as disregarded entities cannot make a separate election. C corporations are not eligible for the program. portal.ct.gov
LLC owners should confirm their federal tax classification before assessing the election’s potential benefits. Forming an LLC does not, on its own, establish eligibility for the Connecticut Pass-Through Entity Tax.
How Does the Connecticut PE Tax Credit Work?
Eligible owners generally receive a Connecticut PE Tax credit equal to 87.5% of their allocated share of the entity’s tax. The credit helps offset Connecticut income tax, but it does not cover the full amount paid by the business. portal.ct.gov
For example, an owner allocated $10,000 of PE Tax would generally receive an associated Connecticut credit of $8,750. The remaining $1,250 needs to be considered when evaluating the election.
This difference is an important part of the calculation. The federal deduction may provide a benefit, but reviewing it alone can overstate the savings. The business should compare the combined federal and state tax results with and without the election.
How Does the SALT Deduction Limit Affect the Decision?
The federal deduction for state and local taxes, commonly called the SALT deduction, has changed for tax years 2025-2029.
For 2026, the individual SALT deduction limit is $40,400, or $20,200 for married taxpayers filing separately. The limit begins to decrease when modified adjusted gross income exceeds $505,000, or $252,500 for married filing separate filers. It will not fall below $10,000, or $5,000 for married filing separate filers. www.irs.gov
Some business owners may now be able to deduct more of their state taxes directly on their federal returns. For those owners, the additional benefit of paying the tax through the business may be smaller.
Other owners may still have a limited personal SALT deduction because of their income. The Connecticut Pass-Through Entity Tax election may remain valuable in those circumstances.
Owners who take the standard deduction may also benefit. The qualifying PE Tax deduction occurs at the business level, so its potential federal benefit does not depend on whether an owner itemizes deductions. www.irs.gov
What Should You Consider Before Making the Election?
The decision should account for the business’s finances and the tax circumstances of each owner. Several factors can change the outcome.
Each Owner’s Federal Tax Rate
A deduction generally provides a larger benefit when it reduces income taxed at a higher federal rate. Owners in different tax brackets may receive different savings from the same election.
The analysis should also consider the state tax deduction available to each owner without the election. Treating the entire PE Tax payment as an additional federal deduction may overstate the benefit.
The Qualified Business Income Deduction
The election may affect an owner’s qualified business income deduction under Section 199A. A deductible business expense can reduce qualified business income, which may reduce the associated deduction. www.irs.gov
When this applies, it can offset part of the expected federal savings. A tax projection should include this interaction rather than simply multiplying the PE Tax payment by the owner’s federal tax rate.
Owners Who Live Outside Connecticut
Businesses with nonresident owners need to consider how each owner’s home state treats the Connecticut tax payment. Operations in multiple states may also require coordination with other state tax elections.
The Connecticut composite return remains a separate requirement. Electing the PE Tax does not replace that return, and payments on behalf of certain nonresident owners may still be required. portal.ct.gov
Business Cash Flow
The business makes the PE Tax payments, while the potential federal benefit generally reaches owners through their tax returns. This can affect the cash available for owner distributions.
Before making the election, owners should agree on how the business will fund the payments. They should also determine how those payments will be reflected in distribution planning.
How Do You Make the Connecticut Pass-Through Entity Tax Election?
The election is made annually by checking the appropriate box on a timely filed Form CT-1065/CT-1120SI. The deadline includes a valid filing extension. Once made, the election cannot be revoked for that tax year. portal.ct.gov
An electing business also files Form CT-PET. If the business omits the election from its original composite return, Connecticut does not allow it to add the election through an amended return. portal.ct.gov
