Capital Gains Tax on Selling
Your West Hartford Home in 2026

Home price appreciation across West Hartford's stronger neighborhoods has been strong enough, for long enough, that a growing number of sellers here are running into a tax question their parents' generation rarely faced: what happens when your gain is bigger than the exclusion? A home bought for $450,000 fifteen years ago and sold today for $1.3 million in King Philip or Bishop's Corner can easily produce a gain well past the $250,000 or $500,000 the IRS lets you exclude tax-free — and Connecticut layers its own rules on top of the federal picture.

This guide walks through exactly how the math works for a West Hartford seller in 2026: what the federal exclusion actually covers, how Connecticut taxes the leftover gain, how the state's separate conveyance tax fits in, and where the real planning opportunities are before you list.

None of this is a substitute for advice from a CPA or tax attorney who knows your specific numbers — it's the framework to bring to that conversation already understanding the moving parts.

Two Separate Taxes, Often Confused

	Capital Gains Tax	Connecticut Conveyance Tax
What it taxes	Your profit (gain) on the sale	The full sale price, regardless of profit
Who collects it	IRS (federal) & CT DRS (state income tax)	State of Connecticut & the Town of West Hartford
Can it be zero?	Yes — often fully excluded under Section 121	No — owed on every sale over $2,000
Typical West Hartford impact	$0 for most sellers under the exclusion; meaningful above it	Roughly 1.0%–1.3% of sale price

The Section 121 Exclusion: Your First $250K or $500K Is Usually Free

Under IRC Section 121, most homeowners can exclude a substantial slice of their gain from federal income tax entirely — no reinvestment required, no replacement home to buy. The exclusion is $250,000 for single filers and $500,000 for married couples filing jointly, and it has not been adjusted for inflation since it was enacted in 1997.

To qualify, you generally need to have owned and lived in the home as your primary residence for at least 24 months out of the 5 years before the sale. The two tests don't need to overlap perfectly, and for married couples filing jointly, only one spouse needs to meet the ownership test, though both must meet the use test.

Critically, the exclusion applies to gain, not sale price. Gain is calculated as your net sale proceeds minus your adjusted cost basis — your original purchase price, plus qualifying capital improvements over the years (a new roof, a kitchen renovation, an addition), minus any depreciation claimed if part of the home was ever used as a rental or home office. Keeping receipts and records of major improvements over your ownership is one of the simplest ways to reduce a future tax bill.

Where West Hartford Sellers Actually Exceed the Exclusion

The exclusion covers most sellers completely. It starts to matter once a home's appreciation, on top of a couple's combined exclusion, pushes gain past $500,000 — a real possibility for long-held homes in King Philip, Bishop's Corner, and South West Hartford, where price growth over a decade-plus of ownership has been substantial. See the 2026 market report for current price trend data driving this dynamic.

Illustrative Example

A married couple bought a King Philip colonial years ago for $450,000 and invested $100,000 in qualifying improvements over their ownership, bringing their adjusted basis to $550,000. They sell today for $1,300,000, with roughly $65,000 in selling costs (commissions, closing costs), leaving net proceeds of $1,235,000.

Step	Amount
Net Sale Proceeds	$1,235,000
Adjusted Cost Basis	$550,000
Total Gain	$685,000
Section 121 Exclusion (MFJ)	–$500,000
Taxable Gain Remaining	$185,000
Est. Federal LTCG Tax (15%)	$27,750
Est. NIIT (3.8%)	$7,030
Est. Connecticut Income Tax (6.99%)	$12,932
Estimated Total Tax on the Sale	~$47,712

Illustrative only, using 2026 federal brackets and assuming this household's income places the taxable gain in the 15% federal bracket and Connecticut's top marginal rate. Actual results depend on total household income, filing status, and specific deductions. Confirm your own numbers with a CPA before listing.

Federal Long-Term Capital Gains Rates for 2026

Gain above your exclusion is taxed as a long-term capital gain (assuming you owned the home more than a year) at 0%, 15%, or 20%, based on your total taxable income for the year, under IRS Rev. Proc. 2025-32:

Rate	Single	Married Filing Jointly
0%	Up to $49,450	Up to $98,900
15%	$49,451–$545,500	$98,901–$613,700
20%	Over $545,500	Over $613,700

Most West Hartford sellers with a taxable home-sale gain land in the 15% or 20% bracket, since the gain itself stacks on top of the rest of the household's taxable income for the year.

The Net Investment Income Tax (NIIT): The Surtax Many Sellers Miss

On top of the standard capital gains rate, a 3.8% Net Investment Income Tax applies to the lesser of your net investment income or the amount your modified adjusted gross income (MAGI) exceeds $200,000 (single) or $250,000 (married filing jointly). For a household already earning well into six figures before the home sale — common among West Hartford's higher-value sellers — the NIIT often applies to the entire taxable portion of the gain, not just a fraction of it.

Connecticut Taxes the Gain Too — At Ordinary Income Rates

This is the detail that catches sellers off guard: unlike the federal system, Connecticut does not offer a preferential rate for capital gains. The state simply adds your taxable gain to your other income and taxes the total under Connecticut's ordinary income tax brackets, which top out at 6.99%. There's no 0/15/20% structure at the state level — every dollar of taxable gain that survives your federal exclusion is taxed by Connecticut at your marginal state rate.

The Conveyance Tax: A Separate Bill Due at Closing

Regardless of whether you owe any capital gains tax at all, Connecticut charges a real estate conveyance tax on the full sale price of the home, paid by the seller at closing. It has two parts: a tiered state tax and a flat municipal tax. West Hartford uses the standard municipal rate — it is not one of the higher-rate "targeted investment communities" like Hartford or New Britain.

Portion of Sale Price	State Rate
Up to $800,000	0.75%
$800,001 – $2,500,000	1.25%
Above $2,500,000	2.25%

West Hartford's municipal conveyance tax adds a flat 0.25% of the full sale price on top of the state tax. Here's how the combined bill looks at a few West Hartford-relevant price points:

Sale Price	State Tax	Municipal Tax (0.25%)	Total Conveyance Tax
$900,000	$7,250	$2,250	$9,500 (1.06%)
$945,000 (King Philip median)	$7,813	$2,363	$10,175 (1.08%)
$1,500,000	$14,750	$3,750	$18,500 (1.23%)
$2,000,000	$21,000	$5,000	$26,000 (1.30%)

Sources: Connecticut conveyance tax rates and calculation methodology. Confirm exact figures with your closing attorney.

Sellers of homes above $2.5 million should also ask their attorney about Connecticut's real estate conveyance tax credit, which can offset some of the top 2.25% tier against state income tax liability in certain circumstances.

Partial Exclusion: When You Don't Meet the Full 2-Year Test

Selling before hitting the 2-year ownership and use mark doesn't automatically forfeit the exclusion. The IRS allows a partial, prorated exclusion for sales driven by a change in employment location, a health-related move, or other unforeseen circumstances specifically defined by the IRS — a relevant consideration for West Hartford sellers relocating for a new job or family need sooner than planned.

What This Means for West Hartford Sellers

• Track your improvements. A well-documented adjusted basis is the single biggest lever you control before a sale — every qualifying dollar of capital improvement reduces taxable gain dollar for dollar.
• Time the sale around your income year if you can. Since Connecticut and the NIIT both key off your total annual income, a seller with unusual flexibility on closing date may have a modest opportunity to manage which tax year absorbs the gain.
• Budget for the conveyance tax separately from any capital gains liability. It's due at closing regardless of your tax outcome, and sellers who only plan around capital gains sometimes forget to net it out of their proceeds.
• Loop in a CPA before you list, not after you close. Basis calculations, partial exclusions, and NIIT interact in ways that are far easier to plan around before a sale than to fix afterward.