Service area
Accountants in Sag Harbor
Our East End office is on Lincoln Street, a few minutes from Main Street. Marine trades, village businesses and the strictest rental rules on the East End.
Sag Harbor is one village sitting in two towns. The village line runs through both Southampton and East Hampton, and it runs its own code and its own rental registry on top of whichever town a parcel falls in. That is not trivia. It decides which rules apply to your house.
The economy is a working one more than a seasonal one. Marine trades around the harbor, boatyards and yacht services, independent retail and restaurants along Main Street down to Long Wharf, and an unusually dense cultural and nonprofit cluster for a village this size.
Local tax
The tightest rental rules out here
Of the five East End areas we cover, Sag Harbor is the most restrictive on renting. Seasonal rentals require a minimum of 30 consecutive days. Two week rentals are permitted no more than twice in a calendar year. No permit is issued at all for a non owner occupied short term rental property. Penalties run up to $1,000 per day of violation.
That matters before you buy, not after. A rental plan that works in the Town of East Hampton may be simply unavailable a mile away inside the village.
The Peconic Bay transfer tax applies at 2.5%, made up of the 2% preservation fund and the 0.5% community housing fund added in April 2023. Both towns the village sits in adopted the housing fund, so the rate is the same either side of the town line. The allowance is $400,000 on improved residential property, but only where consideration is $2,000,000 or less. Above that there is no allowance and the full 2.5% applies from the first dollar. Because the village spans two towns, confirm the allowance treatment for a specific parcel with the Suffolk County Clerk.
For the marine businesses: vessel depreciation, dockage, fuel, the capitalize against repair line on engines, and a revenue curve concentrated into a few months. For the cultural organizations: Form 990. Suffolk County is MCTMT Zone 2 at 0.34%, with the self employment threshold rising to $150,000 for 2026.
Figures above are drawn from the New York State Department of Taxation and Finance, the New York City Department of Finance, the US Census Bureau, New York City Small Business Services and the relevant town and village codes, and were current in October 2026. Local rules change, so confirm anything you plan to act on.
Services
What we do in Sag Harbor
01
Tax preparation and planning
A Sag Harbor return usually has a rental on it, and the rental rules depend on where the parcel sits.
Tax preparation and planning in Sag Harbor02
Bookkeeping and accounting
Marine trades and village retail both run on a season that pays for a year.
Bookkeeping and accounting in Sag Harbor03
Trust and estate tax
A village house held since before the market moved carries an enormous unrealized gain.
Trust and estate tax in Sag Harbor04
Nonprofit accounting
Village cultural and preservation organizations here run on seasonal fundraising.
Nonprofit accounting in Sag Harbor05
IRS representation
Rental registry questions can turn into income questions.
IRS representation in Sag HarborQuestions
Frequently asked questions
Can I rent my Sag Harbor house for a week in August?
Not as a seasonal rental. The village requires a minimum of 30 consecutive days for seasonal lettings, and two week rentals are capped at twice a year. If the property is not owner occupied, no short term rental permit is issued at all. Check the specific address before committing to anything.
Which town am I in?
Either Southampton or East Hampton, depending on where in the village the parcel sits, and it changes which town level rules apply even though the village rules are the same throughout. It is worth establishing before a purchase rather than after.
Do you work with the boatyards and marine businesses?
Yes. The recurring issues are depreciation on vessels and equipment, the treatment of major engine and gear work, and planning estimated payments around a season rather than a calendar.
Nearby
Also served from Hamptons Office
Talk to someone who knows Sag Harbor
Call (516) 845-9969 or book online. Remote works just as well if coming in is awkward.