The cost to form an LLC for a Stamford business starts with the $120 Connecticut filing fee. Add annual fees, a registered agent, and local Stamford business taxes below.
Last updated: May 2026 · Data: MIT Living Wage Calculator, C2ER, U.S. Census, BLS, IRS, state and city sources
Connecticut charges a $120 filing fee to form an LLC and a $80 annual report each year. Connecticut has a complex tax system with seven brackets. The state also imposes a 6.35% sales tax with some items taxed at a luxury rate of 7.75%.
| Cost Item | Amount | When Due |
|---|---|---|
| Connecticut Filing Fee | $120 | One-time at formation |
| Annual report | $80 | Annually |
| Registered Agent Service | $49 to $300/year | Annually |
| Local Stamford Business License / Tax | Varies by industry | Annually |
| Operating Agreement | $0 to $500 | One-time (recommended) |
| EIN (Federal Tax ID) | Free | One-time (IRS.gov) |
Connecticut does not levy a local business income tax (and repealed its statewide Business Entity Tax), but LLCs must file an annual report with the state. Budget for the annual report fee and any Stamford business license on top of the state LLC filing fee.
Stamford is a major financial center in lower Fairfield County, often called a hedge-fund capital, with corporate headquarters, banking and asset management, media production, and a dense commuter link to New York City.
| Local Metric | Stamford (2026 estimate) |
|---|---|
| Metro population | 135,000 |
| County / jurisdiction | Fairfield County |
| Cost of living index (US avg = 100) | 172 |
| MIT living wage, single adult | $27.00/hour |
| MIT living wage, one earner supporting a family of four | $52.00/hour |
| Applicable minimum wage | $15.69/hour |
| Average rent, 1-bedroom | $2,600/month |
| Average rent, 2-bedroom | $3,200/month |
| Median home price | $700,000 |
| Median household income | $100,000/year |
| Combined sales tax rate | 6.35% |
| Effective property tax rate | 0.9% of value/year |
Local figures are 2026 estimates compiled from the MIT Living Wage Calculator, the C2ER Cost of Living Index, U.S. Census and Zillow housing data, and city and county sources. Verify current figures before relying on them.
The LLC filing fee is set by Connecticut at $120, since LLCs are formed at the state level. Add the $80 annual report (each year), a registered agent (about $49 to $300/year), and any local Stamford business license or tax. Connecticut does not levy a local business income tax (and repealed its statewide Business Entity Tax), but LLCs must file an annual report with the state. Budget for the annual report fee and any Stamford business license on top of the state LLC filing fee.
Connecticut does not levy a local business income tax (and repealed its statewide Business Entity Tax), but LLCs must file an annual report with the state. Budget for the annual report fee and any Stamford business license on top of the state LLC filing fee.
Plan for the $80 annual report, registered agent renewal (about $49/year), and any local Stamford business license or tax. The calculator above totals these for you.
LLCs are registered with the Connecticut Department of Revenue Services at the state level, not the city. You then comply with local Stamford requirements such as a business license, zoning, and any city business tax. There is no separate city-level LLC filing.
If your business actually operates in Stamford, forming in Connecticut is usually simplest. Forming in Delaware or Wyoming while operating in Stamford typically forces you to register as a foreign LLC in Connecticut anyway, paying fees in both states.