Cape Cod STR Tax Guide: What Airbnb Hosts Need to Know in 2026
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Cape Cod's STR market is intensely seasonal — July and August can generate more revenue than the other ten months combined — and Massachusetts has one of the more complex occupancy tax structures in the Northeast, with a state excise layered with county and local option taxes that can bring the combined rate above 14% in some towns. Understanding how to maximize deductions during both the peak season and the long off-season is key to profitable Cape Cod STR ownership.
Massachusetts Room Occupancy Excise
Massachusetts taxes short-term rentals under the Room Occupancy Excise framework. This applies to any rental of a residential property (or portion thereof) for less than 31 consecutive days. The state rate is 5.7%.
On Cape Cod, Barnstable County adds a 2.75% county excise. Many Cape towns have also adopted a local option community impact fee of up to 3%, plus a local option excise up to 6% in some cases. The combined rate in popular towns like Chatham, Wellfleet, and Provincetown commonly falls between 11–14%.
| Tax Component | Rate | Notes |
|---|---|---|
| MA State Room Occupancy Excise | 5.7% | All MA STRs |
| Barnstable County Excise | 2.75% | All Cape Cod properties |
| Local Option (varies by town) | 0–6% | Check your specific town |
| Community Impact Fee | 0–3% | Non-owner-occupied only |
| Combined Effective Rate | ~11–14% | Depends on town |
Massachusetts allows municipalities to impose a Community Impact Fee of up to 3% on non-owner-occupied STRs. This is a significant distinction — if you're renting a property you don't live in, you may pay an additional 3% on top of all other taxes. Check your specific town's ordinance.
Airbnb collects and remits Massachusetts room occupancy excise (state + county + local option) for bookings on its platform. Hosts who accept direct bookings must register with the Massachusetts Department of Revenue and remit taxes independently.
Cape Cod Market Snapshot
ADR: $300–$500/night in peak summer (July–August) for standard 3–4 bedroom beach properties; $500–$900+/night for waterfront and private beach access homes. Rates drop significantly outside peak season.
Seasonality: Cape Cod is among the most seasonal STR markets in the US. July 4th weekend through Labor Day weekend is peak season. Late May–June and September–October are shoulder seasons with meaningful but reduced demand. November through April is very slow for most properties.
Popular areas: Chatham, Wellfleet, Truro, and Provincetown command the highest ADRs. Falmouth, Yarmouth, and Barnstable are mid-market with more family-oriented demand.
Key Deductions for Cape Cod STR Hosts
Off-Season Carrying Costs
This is one of the most misunderstood areas of STR tax strategy. Many Cape Cod hosts leave their properties vacant for 6–8 months per year. Costs incurred during vacant periods (mortgage interest, insurance, property taxes, utilities, maintenance) must be allocated based on rental days as a proportion of total days the property is available or in use.
For a property rented 90 days and vacant 275 days: rental fraction = 90/365 = 24.7%. That fraction applies to fixed costs like mortgage interest and property taxes. Variable operating expenses (cleaning between guests, supplies used by renters) remain 100% deductible in full.
Hurricane and Flood Insurance
Cape Cod's coastal exposure requires robust insurance coverage. Wind, hurricane, and flood insurance are standard and fully deductible. Many Cape properties sit in FEMA Special Flood Hazard Areas, requiring mandatory flood insurance that can run $2,000–$8,000/year.
Heavy Cleaning and Seasonal Prep
Opening and closing a Cape Cod property for season involves significant labor: winterizing plumbing, HVAC servicing, deep cleaning, deck and exterior maintenance, and fresh linens and supplies. All of these costs are deductible in the year incurred, even if they occur during the off-season months.
Septic System
Many Cape Cod properties use private septic systems, which require regular maintenance, pumping, and periodic replacement. Annual septic pumping is a deductible operating expense. Septic system replacement is a capital improvement depreciated over 15 years as a land improvement.
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Well Water Systems
Private well systems common on Cape Cod require annual testing, treatment, and occasional pump or tank replacement. These maintenance costs are deductible operating expenses.
Massachusetts State Income Tax
Massachusetts taxes short-term rental income as ordinary income at a flat rate of 5.0% for 2026. Rental income reported on your federal Schedule C flows through to your Massachusetts Form 1 as business income. Massachusetts conforms to most federal deductions, so your federal deductible expenses generally reduce your state tax liability as well.
A Cape Cod host generating $50,000 in gross revenue may earn 70% of that ($35,000) in just 8–10 weeks of summer peak season. This concentration creates a quarterly estimated tax challenge — you may owe large Q2/Q3 estimated payments. Plan your cash flow accordingly and set aside 30–35% of gross revenue for federal and state taxes during peak season.
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Disclaimer
This article is for informational purposes and does not constitute tax, legal, or financial advice. Tax rules vary based on your specific situation, filing status, entity structure, and jurisdiction. Always consult a qualified CPA or tax professional for guidance on your specific tax situation. IRS rules and thresholds are subject to change — verify current requirements at irs.gov before filing.