How to Choose a Bookkeeper in Connecticut (2026)

To choose a bookkeeper in Connecticut, check any CPA claim against the Department of Consumer Protection's license records, confirm the business is active with the Secretary of the State, and get the fee and the reporting schedule in writing before you sign. The state records take minutes to search. The fee and the schedule usually take a phone call, because most Connecticut firms we list leave both off their websites.

What your bookkeeper keeps ready for Connecticut deadlines

These are the state filings your books have to support. Which ones apply depends on your entity type, what you sell, whether you have employees and the schedule each agency gives you, and none of this is tax advice. Your bookkeeper keeps the records. You, or whoever your engagement letter names, files. We checked each item on the official page in September 2026.

• Sales and use tax. DRS assigns every registered business a monthly, quarterly or annual schedule for Form OS-114, and the return is due each period even when you made no sales and owe nothing.
• Withholding. Connecticut income tax withheld from wages is paid electronically with Form CT-WH. Monthly remitters pay by the 15th of the following month and quarterly remitters by the last day of the month after the quarter. Form CT-941, the quarterly reconciliation, is due on that same last day, and Form CT-W3 goes to DRS with your W-2s by January 31.
• Unemployment tax. Quarterly returns and payments to the Connecticut Department of Labor are due April 30, July 31, October 31 and January 31. Reimbursing employers get 15 extra days.
• Pass-through entity tax. It's optional. An entity that elects it files Form CT-PET, due March 15 for calendar-year filers, and the election can't be reversed for that year. Your books have to back up whatever your tax preparer decides.
• Annual report. Corporations, LLCs, LLPs and limited partnerships file one with the Secretary of the State. The due date varies by business: the state sends a reminder about a month ahead, and your CT.gov business filing account shows the next date. Skip it and the state can dissolve the business.

How to check a Connecticut firm yourself

Start with the credential. In the eLicense lookup, pick "Certified Public Accountant" to search a person or "Certified Public Accountant Firm Permit" to search a firm, by name or license number. The same records are on data.ct.gov with each credential's status, the reason for it and its expiry date. That dataset is public domain, which is why we could match every Connecticut firm against it in bulk instead of one search at a time. CPA is a licensed title, so a firm using it should have a record you can find. We call a firm a CPA firm only when its own firm permit is active. A partner's individual license shows on the profile as that person's license, not the firm's.

Then the business. The Business Records Search takes a name, ALEI or filing number and shows whether the entity is active. The state also publishes that registry as open data, and it's where our registration dates for Connecticut firms come from.

Software listings aren't open data. We searched Xero's advisor directory by hand for each firm, and Intuit's ProAdvisor search is one you can run yourself. A ProAdvisor certificate means someone passed Intuit's exam. It isn't a license.

Ask about price and reporting on the first call

Price is the widest gap in Connecticut. Most firms say nothing about it, and only 2 of 38 publish a price or starting price, both in Fairfield County. Ask for the monthly fee, what it covers, and who files the OS-114 and CT-WH. If you're behind, ask for catch-up months as a separate quote: 12 of 38 firms say they take that work on at all.

Fewer than a third say how often reports arrive, so pin it to your own calendar. On monthly withholding, the prior month's books need closing before the 15th. Quarter-end reconciliations fall at the end of April, July, October and January, the same days the unemployment returns are due. Ask which reports you'll get.

QuickBooks is the product Connecticut firms name most. If you run Xero or Sage, check that the firm names yours.

Red flags

• "CPA" on the website but no active firm permit in the state's records, or one with a past expiry date.
• A business record that shows inactive, or a trading name that matches no registered entity.
• Vague answers about who files your OS-114, CT-WH and CT-941, or what happens in a month with no sales.
• A fixed fee with no written scope, and no word on how catch-up months are priced.
• Reports "whenever you need them" instead of on a set day.