Tax Implications of Selling Your Manhattan Apartment

Capital gains tax is the largest tax most Manhattan sellers face on a sale. Three things drive what you owe:

→ Capital gains is on the seller side, but the buyer-paid mansion tax shapes every offer above $1M. Use the NYC Mansion Tax Calculator to anticipate cliff-driven pricing pressure on your sale.

1. Your gain. Sale price minus closing costs minus your basis (purchase price + capital improvements + closing costs at purchase). Most sellers have a smaller "gain" than they think because they forget capital improvements and closing costs.

2. Your residency status. Federal capital gains is 20%–23.8%. NY State is up to 10.9%. NYC is up to 3.876%. Combined for high earners: roughly 38.6% of the gain. For foreign sellers, the federal portion still applies plus FIRPTA withholding.

3. The $250K / $500K primary residence exclusion. If you owned and lived in the apartment for 2 of the last 5 years, you can exclude $250K (single) or $500K (married) of gain entirely from federal taxes. This is the biggest tax benefit available to most Manhattan sellers.

This guide walks through every tax consideration in plain English. Always consult a real-estate-specialized tax professional for your specific situation — the rules are complex and the dollar amounts at stake (often $50K–$300K+) justify a $300–$800 consultation fee.

The taxes you'll face

Selling a Manhattan apartment can trigger up to four distinct taxes:

1. Federal capital gains tax — 0%, 15%, 20%, or 23.8% depending on your income and length of ownership

2. NY State capital gains tax — Treated as ordinary income at NY State rates, up to 10.9%

3. NYC personal income tax — Up to 3.876% on capital gains for NYC residents

4. FIRPTA withholding — 15% of gross sale price withheld at closing for non-US sellers

Plus, indirectly: the Net Investment Income Tax (NIIT) of 3.8% on top of federal capital gains for high-income filers.

Let's go through each.

Federal capital gains tax

How the gain is calculated

Gain = Sale price - Selling costs - Adjusted basis

Where:

Adjusted basis = Original purchase price + Closing costs at purchase + Capital improvements

Worked example:

• Sale price: $2,000,000

• Selling costs (broker, transfer taxes, attorney, etc.): $160,000

• Original purchase price: $1,400,000

• Closing costs at purchase: $30,000

• Capital improvements over hold period: $80,000

• Adjusted basis: $1,400,000 + $30,000 + $80,000 = $1,510,000

• Gain: $2,000,000 - $160,000 - $1,510,000 = $330,000

Federal capital gains rates

Long-term capital gains (asset held >1 year, which applies to virtually all real estate sales):

• 0% if your taxable income is under $47,025 single / $94,050 married (2024 thresholds, 2025+ similar)

• 15% if your taxable income is $47,025–$518,900 single / $94,050–$583,750 married

• 20% if your taxable income is above those thresholds

For most Manhattan sellers (whose incomes typically place them in the top brackets), the federal rate is 20%.

Net Investment Income Tax (NIIT)

If your modified adjusted gross income exceeds:

• $200,000 single

• $250,000 married filing jointly

• $125,000 married filing separately

You owe an additional 3.8% NIIT on the portion of capital gains that exceeds the threshold.

For most Manhattan sellers with income above these thresholds, effective federal rate becomes 23.8%.

Short-term gains

If you held the apartment for less than one year (rare in Manhattan but happens with flip-style sales), gains are taxed as ordinary income at your marginal federal rate — up to 37% for high earners. This is significantly worse than long-term rates.

Practical implication: if you're approaching one year of ownership, holding to 12+ months can save 17 percentage points in federal tax — material money.

NY State and NYC taxes on capital gains

NY State doesn't have a separate capital gains rate. Capital gains are taxed as ordinary income.

NY State rates (2024+, similar 2025+)

For taxable income (single filer):

• Up to $8,500: 4.0%

• $8,500–$11,700: 4.5%

• $11,700–$13,900: 5.25%

• $13,900–$80,650: 5.5%

• $80,650–$215,400: 6.0%

• $215,400–$1,077,550: 6.85%

• $1,077,550–$5,000,000: 9.65%

• $5,000,000–$25,000,000: 10.3%

• $25,000,000+: 10.9%

For most Manhattan sellers (typically high earners with significant gains), the relevant rate is 6.85%–10.9%.

NYC personal income tax rates

NYC residents owe city income tax. For 2024+:

• Up to $12,000: 3.078%

• $12,000–$25,000: 3.762%

• $25,000–$50,000: 3.819%

• $50,000+: 3.876%

For most Manhattan sellers, the NYC rate is 3.876%.

Combined rate for typical Manhattan sellers

Federal (20%) + NIIT (3.8%) + NY State (~6.85%) + NYC (3.876%) = ~34.5%–38.6% combined.

On a $330K gain: roughly $114K–$127K in total capital gains tax.

The primary residence exclusion (huge benefit)

If you owned and used the apartment as your primary residence for at least 2 of the last 5 years immediately preceding the sale, you can exclude:

• $250,000 of gain if filing single

• $500,000 of gain if filing married jointly

This is the single biggest tax benefit for most Manhattan sellers. It's a federal exclusion (not state), but NY State and NYC respect the federal definition of capital gain — so the excluded portion isn't taxable at any level.

Qualifying for the exclusion

Three tests:

1. Ownership test: Owned the home for at least 2 years out of the 5 years preceding the sale (730 days, doesn't have to be continuous)

2. Residence test: Used the home as primary residence for at least 2 years out of the 5 years preceding the sale

3. Look-back test: Haven't used the exclusion on another home sale in the 2 years preceding this sale

If you pass all three: you qualify for the full $250K/$500K exclusion.

What "primary residence" means

The IRS uses several factors:

• Address on tax returns

• Driver's license / voter registration address

• Mailing address for bills

• Time spent at the property (relative to other properties)

Casual use ("we visit a few weekends") doesn't qualify. Ownership of an investment property doesn't qualify. A pied-à-terre that's not your primary home doesn't qualify.

When the exclusion partially applies

If you don't fully meet the 2-year tests but are selling because of:

• Change of employment (50+ miles from previous home)

• Health (medical condition)

• Unforeseen circumstances (defined narrowly: divorce, death, multiple births, etc.)

You may qualify for a partial exclusion prorated by months of qualifying use. Talk to a tax professional.

Practical example

You and your spouse bought a Manhattan apartment for $1.4M in 2019, lived there continuously, and sold for $2M in 2025. Gain is roughly $330K (as calculated earlier).

• Apply $500K married joint exclusion: full $330K excluded

• Taxable capital gain: $0

• Capital gains tax owed: $0

Same numbers but you bought as an investor and rented it out: no exclusion applies. Full $330K subject to ~38.6% combined tax = ~$127K in tax.

The exclusion is a $127K swing in this example. Verify that you qualify before listing.

Special situations

Inherited property — basis step-up

If you inherited the apartment, your basis is the fair market value on the date of the original owner's death (or the alternate valuation date 6 months later, in some cases) — not the original purchase price.

Practical example:

• Your parents bought the apartment in 1985 for $200K

• They died in 2024 when the apartment was worth $1.8M

• You inherited it

• You sell in 2026 for $1.9M

Without basis step-up: gain would be ~$1.7M (sale minus basis of $200K), taxed at ~38.6% = ~$656K With basis step-up: gain is ~$100K (sale minus stepped-up basis of $1.8M), taxed at ~38.6% = ~$38.6K

The basis step-up is one of the largest tax benefits in the US tax code. Use it. Confirm date-of-death valuation with a qualified appraiser.

1031 exchange (investment property only)

A 1031 exchange (like-kind exchange) lets you defer all capital gains by reinvesting proceeds into another investment property.

Strict rules:

• Property must have been held as investment (not primary residence)

• Replacement property must be identified within 45 days of the sale closing

• Replacement property must be acquired within 180 days of the sale closing

• Funds must be held by a Qualified Intermediary (QI) — not by you

• Replacement property must be of equal or greater value

• Must be like-kind real estate (any US real estate qualifies as like-kind to other US real estate)

Practical use cases:

• Selling a Manhattan investment apartment to buy a larger investment property

• Selling a single rental to buy a multifamily building

• Diversifying into a different market

Common mistakes:

• Missing the 45-day or 180-day deadline (exchange fails, full gains owed)

• Touching the proceeds yourself (must go through QI, period)

• Trying to exchange into a primary residence (doesn't qualify until you've used as investment for 2+ years first)

A 1031 exchange can defer hundreds of thousands of dollars in tax — but only if executed properly. Hire a qualified intermediary and a real-estate-specialized tax attorney. Don't DIY this.

FIRPTA (Foreign sellers)

If you're a non-US person selling US real estate, FIRPTA (Foreign Investment in Real Property Tax Act) requires the buyer to withhold 15% of the gross sale price at closing and remit it to the IRS.

Worked example:

• Foreign seller closes $3M sale

• Buyer withholds $450,000 at closing

• Seller receives $2.55M minus other closing costs

• Seller files US tax return showing actual capital gains liability

• Seller gets refund of any over-withholding (or owes additional tax)

The Withholding Certificate option: You can apply for a Withholding Certificate (Form 8288-B) before closing to reduce the withholding to your actual estimated tax liability. This requires:

• Calculation of estimated capital gains

• Submission to IRS at least 90 days before closing

• IRS approval (typically 60–120 days)

Practical implication: if you're a foreign seller selling for $3M with an actual gain of only $500K, your real tax is ~$96K — but you'll have $450K withheld unless you get a certificate. The certificate process delays closing by 60–120 days. Plan accordingly.

Foreign sellers also still owe NY State and NYC capital gains tax on the gain, in addition to federal/FIRPTA.

Estate sales — multiple inheritors

If multiple heirs inherit an apartment together, each inherits a proportional basis (stepped up at death). When the apartment is sold:

• Each heir's gain is calculated based on their proportional basis

• Each heir reports their share on their tax return

• Capital gains tax applies at each heir's individual rate

If one heir is a US resident and another is foreign, FIRPTA applies to the foreign heir's portion only.

Divorce sales

If you and your spouse are divorcing and selling the apartment:

• If you sell during the marriage and file jointly: $500K exclusion applies (one filing)

• If you sell after divorce and each owns 50%: each spouse gets up to $250K exclusion ($500K total)

• If divorce decree transferred ownership to one spouse: that spouse takes over the basis and can use $250K (or $500K if remarried)

The timing of sale relative to divorce decree affects tax outcome significantly. Coordinate with your divorce attorney and tax professional.

Sales involving a trust

If the apartment is held in a trust:

• Revocable / living trust: treated as if owned by you personally; standard rules apply

• Irrevocable trust: depends on trust structure; consult tax professional

• Grantor trust: typically treated as owned by grantor; standard rules apply

• Estate trust: basis step-up at death; standard inheritance treatment

Strategies to reduce your tax burden

1. Document every capital improvement

Track every dollar spent on capital improvements during your ownership. Each $50K of documented improvements reduces your taxable gain by $50K, saving ~$19K at combined ~38.6% rate.

Capital improvements include:

• Kitchen renovations (full or partial)

• Bathroom renovations

• New flooring, windows, HVAC

• Built-in furniture, custom millwork

• Capital additions or expansions

Capital improvements DO NOT include:

• Routine repairs (paint, fixing leaks)

• Maintenance

• Minor repairs

Keep receipts, invoices, contractor agreements, before/after photos. If audited, you'll need documentation.

2. Time the sale around your tax year

If you'll have lower income next year (retirement, sabbatical, between jobs), defer the sale into that year for lower marginal NY State and NYC rates.

If your income will be similar both years, this doesn't matter as much.

3. Use the residence exclusion fully

If you qualify for the $500K married joint exclusion, that's $500K of tax-free gain. Make sure you've satisfied the 2-of-5 ownership and use tests before selling.

4. Consider a 1031 exchange (investment property)

If the apartment is investment property and you intend to reinvest in another investment property, a 1031 exchange can defer all gains. Material savings on $500K+ gains.

5. Offset gains with losses

If you have other investment losses you can realize this year (sold stocks at a loss, etc.), they can offset capital gains. Up to $3K of net losses can also offset ordinary income.

6. Spread the gain via installment sale

If you finance the buyer (rare in Manhattan but possible), an installment sale spreads the gain over multiple tax years, potentially reducing the tax in any single year.

7. Charitable giving

If you have significant charitable intent, you can donate the apartment (or partial interest) to a qualified charity, eliminate the capital gain, and receive a charitable deduction. Complex; requires planning.

8. Pre-sale tax consultation

A 1-hour conversation with a real-estate-specialized accountant before you list typically saves $10K–$100K+ in tax over the transaction. Worth the $300–$800 fee.

Common seller mistakes

1. Forgetting capital improvements

Most sellers forget at least 30–50% of their capital improvements. Each $10K forgotten = ~$3.9K in unnecessary tax.

2. Assuming primary residence exclusion applies when it doesn't

You must satisfy both ownership and use tests. A pied-à-terre, investment property, or short-term residence doesn't qualify.

3. Not consulting a tax professional

Real-estate-specialized accountants charge $300–$800 for a consultation. The math works in your favor 90%+ of the time.

4. Misunderstanding 1031 exchange rules

People often think 1031 exchanges work for primary residences (they don't). People miss the 45-day identification deadline (full tax owed). People don't use a qualified intermediary (transaction disqualified).

5. Not factoring in NY State and NYC tax

People focus on federal capital gains and forget that NY State + NYC adds another ~14.5% on top. Plan for the full ~38.6% combined rate.

6. Underestimating FIRPTA impact (foreign sellers)

15% of gross sale price withheld is a much larger number than most foreign sellers realize. On a $3M sale, that's $450K — even if your actual tax is only $100K. Apply for a Withholding Certificate well before closing if cash flow matters.

7. Not planning the divorce timing

Selling before divorce vs. after has material tax implications. Coordinate with your divorce attorney.

8. Using the exclusion twice in two years

You can only use the $250K/$500K exclusion once every 2 years. If you sold a previous primary residence within 2 years, the exclusion doesn't apply to this sale.

When to involve a tax professional

For any of these situations, consult a real-estate-specialized accountant:

• Sale price above $2M

• Holding period under 2 years

• Multiple owners (inheritance, divorce, partners)

• Investment property

• Foreign seller status

• Trust ownership

• Mid-renovation sale

• Looking at 1031 exchange

The cost ($300–$800 typically) is dwarfed by the tax savings or risk reduction.

For straightforward primary residence sales below the $250K/$500K exclusion, you may be able to handle the tax filing yourself or with your existing accountant. But verify before assuming.

A worked example — maximum strategy

Sarah and David, married, sell their Manhattan condo. Numbers:

• Bought 2018 for $1.6M, $40K closing costs, primary residence

• Capital improvements over 7 years: $120K (renovated kitchen 2020, bathroom 2022, fresh paint 2024)

• Sale price 2026: $2.4M

• Selling costs: $200K

Gain calculation:

• Adjusted basis: $1.6M + $40K + $120K = $1.76M

• Gain: $2.4M - $200K - $1.76M = $440K

Without primary residence exclusion (if they hadn't qualified):

• Tax: ~$170K (38.6% × $440K)

With $500K married joint exclusion (they qualify — primary residence 2 of 5 years):

• Excluded: $440K (under the $500K cap)

• Taxable gain: $0

• Tax: $0

The exclusion saved them $170K in tax. Worth checking if you qualify.

If you're planning to sell in the next 12 months and want a real read on your potential tax exposure — capital gains, FIRPTA, exclusion eligibility, basis step-up, 1031 timing — schedule a consultation with us here. We'll walk through your situation and connect you with a real-estate-specialized accountant if needed. Tax planning before listing typically saves more than the broker commission.

Disclaimer: This guide is general information only and does not constitute tax advice. Tax law is complex and changes frequently. Consult a qualified tax professional for advice specific to your situation. Real estate brokers, including The Roebling Team at Compass and the author, are not licensed tax advisors.