Cumberland County is part of Maine's town-driven property tax system. Maine assesses real property at 100% of "just value" (full market value, Title 36) statewide. Tax = AV × town mill rate / 1,000. Maine has approximately 488 municipal entities total (towns, cities, plantations, and unorganized territory), each setting its own mill rate. Maine's distinctive "plantation" governance form — between township and town — is primarily found in Aroostook and Somerset counties. Cumberland County contains Portland, South Portland, Westbrook, and other towns — each with its own town mill rate, but sharing the same county mill rate component. Cumberland County's representative effective rate is ~1.10%. Maine effective rates run ~1.10% statewide median (moderate by US standards), with substantial town-by-town variation (coastal/affluent towns lower; inland former-mill cities higher).
How the bill is built
Each town's assessor determines "just value" (FMV) as of April 1 (Title 36 §502). Maine assesses at 100% AR. Maine requires reassessment when a town's certified ratio falls below 70% of just value, but many towns delay for years or decades. Tax = FMV × town mill rate / 1,000. Cumberland's representative town mill rate is ~11 mills (~1.10% effective). Bills typically issue in 2 halves; due dates vary by town.
2026 Cumberland County rate breakdown (town mill rate per $1,000 of AV (100% FMV; towns assess), Portland district)
| Taxing entity | Rate |
|---|---|
| Combined municipal + county + local school (Portland ~14.92 mills, Falmouth ~16.30 mills, Yarmouth ~17.57 mills, Brunswick ~22.15 mills, South Portland ~17.27 mills × 100% AR; county avg ~1.10%) | 11.0000 |
| Combined total | 11.0000 |
As of April 27, 2026 · From Cumberland County Regional Assessing Office + individual town assessors (towns assess; county provides regional assessing service for some smaller towns).
Deductions and exemptions for 2026
Maine homeowner property tax relief operates through several mechanisms — primarily through statewide AV reductions applied at the town level, plus the structurally rare Property Tax Fairness Credit (PTFC) on the state income tax return. Maine's primary relief mechanisms: (1) the $25,000 Homestead Exemption (Title 36 §683), (2) the $6,000 Standard Veteran Exemption (Title 36 §653), (3) the $50,000 Paraplegic/SAH Veteran Exemption, (4) the $4,000 Blind Exemption, (5) the Property Tax Fairness Credit (refundable state income tax credit), and (6) the Property Tax Deferral Program (Title 36 §6266 — for income-tested 65+ filers).
Homestead Exemption (Title 36 §683)
The $25,000 AV reduction for primary residences. Eligibility: must own a Maine home for at least 12 months as of April 1 of the tax year and make it your permanent residence. Apply once with town assessor (annual renewal automatic once approved — no need to reapply each year). On a home in a town with a $13/$1,000 mill rate, the Homestead Exemption saves approximately $325/year. Towns adjust the exemption amount by their certified assessment ratio if the town is below 100% AR (some towns delay reassessment for years; a town with 70% certified ratio applies $17,500 effective AV reduction rather than $25,000).
Standard Veteran Exemption (Title 36 §653)
The $6,000 AV reduction for vets who served during a recognized war period AND meet ONE of: (a) age 62+, (b) receiving 100% disability compensation, OR (c) became 100% disabled in service. The $6,000 STACKS with the $25,000 Homestead Exemption (combined $31,000 AV reduction for qualifying vet homesteaders). On a home in a town with a $13/$1,000 mill rate, the standard exemption saves approximately $78/year. Surviving unremarried spouses of deceased qualifying vets receive the same $6,000 exemption. Apply with town assessor (DD-214 + VA disability rating decision) by April 1.
Paraplegic / Specially Adapted Housing Veteran Exemption (Title 36 §653)
$50,000 AV reduction for vets who received a federal grant for a specially adapted housing unit (Specially Adapted Housing or Special Home Adaptation grants from the VA). Narrow applicability — only qualifying severely disabled vets with VA-adapted homes. On a home in a town with a $13/$1,000 mill rate, the paraplegic exemption saves approximately $650/year. Stacks with the $25,000 Homestead Exemption.
Property Tax Fairness Credit / PTFC (refundable state income tax credit)
Maine's structurally rare relief mechanism — a REFUNDABLE Maine individual income tax credit for property tax (or rent equivalent) paid that exceeds a percentage of household income. The credit is paid as a state income tax refund REGARDLESS of whether income tax is owed. For 2025 tax year (claimed on 2026 Maine income tax return): maximum credit $1,500 standard ($2,000 if 65+). Income limits vary by filing status — typical $46,000-$54,000 single, $60,000-$80,000 married. Claimed on Maine Schedule PTFC/STFC with the state income tax return. The PTFC is administered by Maine Revenue Services, not by the towns.
Property Tax Deferral Program (Title 36 §6266)
For seniors 65+ with income at or below ~$80,000, the state pays the property tax to the town (lien attached to the property), repaid at sale or estate settlement. Asset limits apply (~$50,000 in non-home assets). Apply with town assessor by April 1. This program REPLACED the 2023-only Property Tax Stabilization Program that was repealed by the legislature in 2023.
Appealing your assessment
Maine property tax appeals follow a 3-tier process. Level 1: Town Board of Assessment Review (BAR) OR Local Assessor. File written abatement application within 185 days of commitment of taxes (typically the bill mailing date). Present comparable sales, recent appraisals, or condition documentation. Level 2: County Commissioners (most counties) OR State Board of Property Tax Review (BPTR) for non-residential property valued >$1M. Appeal within 60 days of BAR decision. Level 3: Maine Superior Court. Most appeals are resolved at Level 1 or 2. Tax cycle: assessment date is April 1; bills typically issued in 2 halves (most towns: due September/March, but exact dates vary by town).