There is a line on your Boston property tax bill worth more than $4,000 a year, and a surprising number of homeowners never claim it.
It's called the residential exemption, and for Fiscal Year 2026 it saves qualifying owner-occupants up to $4,353.74 on their tax bill. That's not a deduction off your income taxes or a one-time rebate. It's a recurring reduction in what you owe the City of Boston every single year you live in your home. Over a decade, you're talking about more than $40,000.
Most people who have it got it automatically and never think about it. The problem is everyone else — the buyers who closed mid-year, the owners who never filed, the people who assume "the system" handles it. The system does not always handle it. Here's how it actually works and how to make sure you're not the one overpaying.
What the residential exemption is
Boston taxes property at $12.40 per $1,000 of assessed value for residential property in FY2026. The residential exemption works by carving a fixed dollar amount out of your assessed value before the tax is calculated. For FY2026 that exempt portion is $351,108 of value. At the $12.40 rate, shielding that much value from taxation is what produces the up-to-$4,353.74 savings.
The key word is owner-occupant. The exemption exists to favor people who live in their Boston homes over investors who rent them out. If the property is your primary residence, you can qualify. If you own a Boston condo or triple-decker that you rent to tenants and live elsewhere, you don't get it — and you actually pay slightly more per dollar of value, because the exemption shifts some of the city's tax burden onto non-owner-occupied residential property.
This applies to condos, single-family homes, and 2-to-3-family properties where the owner occupies one of the units.
Why two identical homes can cost wildly different amounts
Here's the part that should change how buyers shop.
Two people can buy nearly identical homes at the same price, and one pays hundreds of dollars more per month — not because of their mortgage rate, but because of how the exemption and local tax rates interact. An owner-occupant claiming the Boston exemption saves roughly $363 a month versus what the same property costs without it. That difference flows straight through your mortgage escrow into your monthly payment.
The lesson for buyers: when you compare homes — especially across different towns — the tax line matters as much as the list price. A lower sticker price in a town with no residential exemption and a higher rate can cost you more every month than a pricier home in Boston where you'll claim the exemption. Most buyers never run that comparison. The ones who do make better decisions.
The trap: it doesn't always apply automatically
If you've owned and lived in your Boston home for a while, the exemption probably already appears on your bill, and you can stop reading and just confirm it (more on that below). The people who get burned are:
- Recent buyers. When you purchase mid-year, the exemption tied to the prior owner doesn't simply transfer to you. You may need to file.
- Owners who never applied and assumed it was automatic.
- People who moved and changed which property is their primary residence.
The fix is straightforward: you can file an application with the City's Assessing Department. For FY2026, the filing deadline was April 1, 2026. A recent change to the rules also expanded eligibility so that homeowners who acquire their home before July 1 may now qualify for the current fiscal year — a meaningful improvement for mid-year buyers who used to have to wait.
How to check in five minutes
- Pull your most recent property tax bill. The residential exemption is applied to the third-quarter bill, issued in late December and due February 1.
- Look for a residential exemption line item. If it's there reducing your taxable value, you're set.
- If it's missing and you're an owner-occupant, contact the Boston Assessing Department / Taxpayer Referral and Assistance Center about filing. Filing an application doesn't let you postpone paying your taxes in the meantime — you still pay each quarter — but an approved exemption gets credited back to you later in the fiscal year.
Five minutes to confirm a $4,000-a-year benefit is one of the highest-return things a Boston homeowner can do.
Other relief worth knowing about
The residential exemption is the big one, but it's not the only program:
- Elderly exemption (Clause 41C): Boston residents 65 or older who meet income and asset limits can receive up to $1,000 in relief, with the city authorized to grant an additional $1,000 on top. For FY2026 the income caps are $25,980 for a single person and $38,970 for a married couple, with asset limits beyond the home itself.
- A homestead declaration is a separate protection — it shields home equity from certain creditors. It's worth filing, but it's a legal protection, not a tax cut, so don't confuse it with the exemption above.
Other Greater Boston communities — Cambridge, Brookline, Somerville, and a handful of others — run their own residential exemptions with different amounts and rules. About 17 Massachusetts cities and towns have adopted one. If you own outside Boston, the same "do I have it, and did I have to file?" questions apply with your local assessor.
The bottom line
The residential exemption is the rare piece of the property-tax system that's both large and easy to act on. The money is real, it recurs every year, and the only thing standing between many owners and it is a form they didn't know they needed to file. Check your bill. If you're an owner-occupant and the exemption isn't there, that's a fixable mistake — and a profitable one to fix.
Not sure whether your home has the exemption, or whether a property you're considering qualifies? We help clients sort this out all the time, and we're glad to take a look at your situation. It's one of the easier ways we can put money back in your pocket.
This article is for general information and isn't legal or tax advice. Tax rates, exemption amounts, and deadlines change annually — confirm current details with the Boston Assessing Department or your local assessor before relying on them.