Morning: Small Business Tax Tips (New Haven): The Connecticut Pass-Through Entity Tax Election. Why New Haven LLC and S-Corp Owners Should Run the Numbers Before Year-End

NEW HAVEN, CONNECTICUT, Jose’s Tax Service, October 11, 2026

Connecticut’s Pass-Through Entity Tax (PE Tax) election can change how state income tax is deducted for federal tax purposes. For some New Haven LLC and S corporation owners, the election may improve the overall result. It is not automatic savings. The entity-level tax, owner credit, federal deduction, and other tax items must be modeled together.

Run the numbers before year-end. The election is annual and irrevocable for the tax year. A late decision may also leave estimated-payment deadlines behind.

What Is Connecticut’s PE Tax Election?

Connecticut defines a pass-through entity (PE) as a partnership or an S corporation. An LLC generally falls within this definition when it is treated as a partnership for federal tax purposes. A single-member LLC that remains a disregarded entity is not, by itself, a PE under this definition.

The election allows an eligible PE to pay Connecticut income tax at the entity level by filing Form CT-PET, Connecticut Pass-Through Entity Tax Return. Connecticut’s published 2025 instructions use a 6.99% rate on the applicable PE Tax base. The entity then allocates a corresponding credit to eligible owners. Under those instructions, the credit is generally calculated as 87.5% of the allocated PE Tax.

The PE Tax is optional. The Connecticut composite return is a separate matter: a PE doing business in Connecticut or earning income connected with Connecticut sources generally must file Form CT-1065/CT-1120SI, Connecticut Composite Income Tax Return, whether or not it elects into the PE Tax.

For the current official overview, review the Connecticut Department of Revenue Services (DRS) Pass-Through Entity Tax Information and its current PE Tax forms.

Why the Federal SALT Limit Matters!

The federal state and local tax (SALT) deduction limit applies to qualifying state and local taxes claimed by individuals on Schedule A (Form 1040). Its precise amount and limitations depend on the tax year and current federal law. For an owner with substantial state income tax, the individual limit may restrict how much state tax can be deducted on the personal return.

The federal approach to qualifying entity-level taxes is different. IRS Notice 2020-75 says that qualifying state income taxes paid by a partnership or S corporation may be deducted in computing the entity’s non-separately stated income or loss. The payment is generally reflected in the owner’s share of pass-through income rather than claimed as an individual Schedule A tax payment subject to the SALT limitation.

That distinction can matter to a New Haven owner whose share of business income and Connecticut tax is significant. But a lower pass-through income amount is not the same as a guaranteed dollar-for-dollar federal tax saving. The result can depend on the owner’s tax bracket, itemized deductions, timing of payment, and other federal provisions, including the qualified business income deduction.

Read IRS Notice 2020-75 and have a tax professional model the entity and owner returns together.

How the Connecticut Mechanics Work!

For an electing PE, the basic sequence is:

1. Calculate the Connecticut PE Tax base. Use the applicable CT-PET instructions. The calculation can involve Connecticut-source income and, in some cases, a resident portion of unsourced income. It is not necessarily the same as the business’s total federal profit.
2. Pay the tax through the entity. File Form CT-PET and make required payments through an approved electronic method, such as myconneCT.
3. Allocate owner credits. The entity reports members’ information and credits through its Connecticut filings. Owners generally use the information provided on Schedule CT K-1, Member’s Share of Certain Connecticut Items.
4. Report the related items on the owner’s return. Individuals may need to consider their federal Form 1040, including Schedule E (Supplemental Income and Loss), and their applicable Connecticut return and Schedule CT-PE, Pass-Through Entity Tax Credit. Follow the current forms and instructions for the year being filed.

The CT-PET election does not replace the federal S corporation election. It also does not change the rules for how an S corporation pays its shareholder-employees.

Who Should Evaluate the Election?

Ask for a calculation if your New Haven business is an LLC taxed as a partnership or an S corporation and has meaningful Connecticut taxable activity. The election may warrant particular attention when:

• Owners expect substantial Connecticut income from the business.
• Personal SALT deductions may be limited under the federal rules that apply to the tax year.
• The business has enough cash to make timely estimates and pay the tax.
• Owners are Connecticut residents or have Connecticut-source income as nonresidents.
• The entity can provide complete, accurate owner allocations and tax documents.

Do not assume that a PE Tax election is beneficial merely because the business pays Connecticut tax. The entity deduction may reduce pass-through income, while the state credit may offset only part of the relevant tax. The owners’ residency, income allocation, other state taxes, and federal deductions can change the comparison.

S Corporations: Keep Compensation Separate!

An S corporation must pay reasonable compensation to a shareholder-employee for services before making non-wage distributions to that person. The IRS may reclassify distributions as wages when compensation is not reasonable. That can lead to payroll tax assessments, penalties, and interest.

Model the PE Tax election only after reviewing payroll and shareholder compensation. Do not reduce a defensible salary to make the entity-level tax appear more favorable. The PE Tax election does not authorize that result and does not substitute for compliance with federal S corporation rules. See the IRS guidance on S corporation compensation and medical insurance issues.

Timing and Year-End Checklist!

For calendar-year entities, Connecticut’s general return due date is the fifteenth day of the third month after year-end. Based on current DRS guidance, the 2026 Form CT-PET and Form CT-1065/CT-1120SI filing deadlines are generally March 15, 2027, subject to the applicable weekend, holiday, or extension rules. The election must be made by the due date or extended due date as prescribed by DRS. It is irrevocable for the year and cannot simply be added later by amending the return.

Estimated payments need attention now. A PE whose required annual payment is $1,000 or more generally must make four installments. For calendar-year entities, the 2026 dates are April 15, June 15, September 15, 2026, and January 15, 2027. As of October 11, the first three dates have passed. Review payments made and contact your tax professional promptly if an installment was missed. Underpayments may lead to interest or penalties.

Before the year closes, complete this review:

• Confirm the entity’s federal tax classification. Verify whether the LLC is taxed as a partnership, or whether the corporation has a valid S corporation status.
• Forecast 2026 income and Connecticut-source activity. Reconcile bookkeeping through the latest available month and estimate the year-end position.
• Review required estimates. Compare payments made with the applicable current-year and prior-year calculation. Keep proof of electronic payments.
• Compare both tax treatments. Include the CT-PET amount, owner credit, federal income reduction, potential QBI effects, owner-level SALT position, and cash-flow cost.
• Prepare owner records. Keep the operating agreement or shareholder records, ownership percentages, federal Forms 1065 or 1120-S, K-1s, Connecticut schedules, payroll reports, and payment confirmations together.
• Check updated forms before filing. DRS currently lists 2025 CT-PET instructions and returns alongside a 2026 estimated-payment coupon. Confirm that 2026 instructions and forms have been issued before preparing the 2026 return.

An extension to file does not automatically extend the time to pay. Late or insufficient payments may result in charges. Confirm exact deadlines and instructions with DRS before submitting.

Plan With a New Haven Tax Professional!

A PE Tax election should be evaluated as part of a coordinated state and federal tax plan, not as a stand-alone checkbox. Jose’s Tax Service works with New Haven individuals and small businesses to review entity records, model tax scenarios, and plan for filing season. Book a virtual or in-person consultation. Appointments are available with $0 upfront payment.

Start with the Small Business Learning Center, review year-end tax planning, or schedule a tax appointment. Set aside time before year-end to review your estimates and forecast. January 15, 2027, is the next calendar-year PE Tax estimated-payment date.

Category: Tax Planning | Tags: small business tax, New Haven business, deductions, tax strategy