Cape Cod Rental Taxes Explained: The 5.7 Percent, the Local Rate and the Water Fund Excise

The total at the bottom of a Cape Cod rental quote is often several hundred dollars higher than the weekly rent. Most of that gap is tax, and since 2019 the same taxes that apply to hotel rooms also apply to rented houses and cottages. This guide is based on the Massachusetts Department of Revenue’s room occupancy pages and its Technical Information Release 19-3.

The four pieces

Charge	Rate	Who sets it	Applies on Cape Cod?
State room occupancy excise	5.7%	State (5% in statute plus a 0.7% surtax)	Yes, everywhere
Local option room occupancy excise	Up to 6%	Each city or town, by vote	Depends on the town
Cape Cod and Islands Water Protection Fund excise	2.75%	Member towns of the fund	Yes, all Barnstable County towns
Community impact fee	Up to 3%	Each town, by separate vote	Only for certain rentals, in towns that adopt it

The water fund excise is the one that sets the Cape apart. The department says it may be charged in Barnstable, Nantucket and Dukes Counties and currently applies in all Barnstable County municipalities. The TIR adds that towns on Nantucket and Martha’s Vineyard are not currently members of the fund. If you are comparing a rental on the Cape with one on an island, that line may appear on one bill and not the other.

Who pays the community impact fee

The community impact fee is narrower than the other three. A town that already has a local excise may vote to add up to 3 percent, but only on two kinds of short-term rentals. The first is a professionally managed unit, which the department defines as one of two or more short-term rental units in the same town with the same operator, not inside a one- to three-family home that is the operator’s primary residence. The second, adopted by a separate vote, is a unit in a two- or three-family house where the operator lives. A single cottage rented by an owner who has no other rentals in that town does not trigger it.

What the tax is charged on

Since July 1, 2019, taxable rent means every amount collected from the guest in exchange for occupancy. The department names insurance, linen fees, cleaning fees and booking fees as part of rent, even when they are optional. Three things are excluded: a bona fide refundable security deposit, amounts already taxed as sales or use tax, and services the operator sells to non-guests on the same terms in the regular course of business.

That means you should multiply the tax rate against rent plus fees, not rent alone, when you check a quote.

A worked example

Suppose a cottage rents for $3,000 a week with a $250 cleaning fee and a $500 refundable security deposit, in a town charging the maximum 6 percent local rate. The operator owns only that one property in town, so no community impact fee applies.

• Taxable rent: $3,000 + $250 = $3,250. The deposit is left out.
• Combined rate: 5.7% + 6% + 2.75% = 14.45%.
• Tax: $3,250 x 14.45% = about $469.63.
• If the same unit were professionally managed in a town that adopted a 3% community impact fee, the rate would be 17.45% and the tax about $567.13.

These figures are arithmetic only, using the maximum rates the law allows. Your town’s actual local rate may be lower. The department points to the Division of Local Services Municipal Databank as the current list of local rates, community impact fees and water fund members.

When no tax is due

Several situations produce a rental bill with no occupancy tax, and none of them is necessarily a red flag:

• Long stays. If a short-term rental stay exceeds 31 consecutive days, no excise is imposed on any portion of it, including the first 31 days.
• Low rent. If the total rent is less than $15 per day, no tax is due.
• The 14-day exception. An owner who rents a property for 14 days or less in a calendar year, registers and claims the exception by January 15 does not collect tax. If the owner then goes past 14 days, the department says the owner owes the tax that should have been collected for the first 14 days too.
• Bed and breakfast homes. An owner-occupied house renting no more than three rooms with breakfast included is not subject to the tax.

Rates can change after you book

Local rates change only by a vote of a town’s legislative body, and the department notes that towns must notify it of changes. Because the rate in effect at the time of occupancy is the one that applies, a booking made in winter for August is taxed at August’s rates. The department even suggests that operators put a clause in contracts saying taxes and fees are as of the date of occupancy. If your contract has that wording, plan for the possibility of a small increase.

Where the money goes

The water fund excise goes, as its name says, to the Cape Cod and Islands Water Protection Fund; the TIR notes that membership in the fund is administered by the Department of Environmental Protection. The other charges go to the state and to the town where the property is. A state analysis of lodging revenue found that short-term rentals produced 43 percent of lodging tax revenue in fiscal 2021, falling to 20 percent by fiscal 2024 as hotel revenue recovered.

For the rest of the rental process, from checking registration to reading the deposit clause, see Renting a Cape Cod Summer House: What the Massachusetts Rules Mean for Guests. If a house is out of budget once taxes are added, Camping on Cape Cod: State Park Sites, Yurts and the Booking Rules That Trip People Up covers the state campgrounds and yurts.