NYC Condo and Co-op Tax Deductions: A Complete Guide

The short answer: the mortgage interest is fully deductible ($4,200), but the property tax is effectively non-deductible because of the SALT cap.

Let’s walk through the federal math:

State and local tax cap under §164(b)(6) is $10,000 for SALT combined (state income tax, local income tax, property tax, sales tax). You already have $14,000 of NYS+NYC income tax that exceeds the cap on its own. Adding the $8,400 property tax doesn’t increase your federal deduction because you’re capped.

Your effective federal property tax deduction: $0. The $8,400 sits in your records but doesn’t reduce federal taxable income.

Mortgage interest is a separate category not subject to the SALT cap. It’s deductible under §163(h) for mortgage interest on qualified residence indebtedness, subject to the $750K/$1M acquisition debt cap. Your share of co-op underlying mortgage interest ($4,200) is fully deductible on Schedule A as mortgage interest, separate from the SALT cap.

Federal deduction summary for these items: $4,200 mortgage interest + $40,000 SALT cap (your state income tax already exceeds this) = $14,200 added to your Schedule A.

State level (NYS): New York generally allows itemized deductions including property tax. On your NYS Form IT-201, the property tax IS deductible (subject to NY’s own rules). So the $8,400 reduces NYS taxable income even though it doesn’t reduce federal taxable income. NY tax at, say, 6.45% × $8,400 = ~$542 of state tax savings.

NYC level: NYC tax follows the NYS itemized deduction framework, so the property tax deduction also reduces NYC taxable income. NYC tax at 3.876% × $8,400 = ~$326 of city tax savings.

Total effective deduction value: $0 federal + $542 NYS + $326 NYC = $868 of actual tax savings on the property tax piece. Plus $4,200 × your marginal federal rate (let’s say 32%) = $1,344 of federal savings on the mortgage interest, plus state and city savings on the mortgage interest as well.

Workarounds for the SALT cap on property tax:

1. Pass-Through Entity Tax (PTET) election. If you have business income flowing through an LLC, partnership, or S-corp, the entity can elect to pay state income tax at the entity level under New York’s PTET. The entity-level tax is a federal business deduction (not subject to SALT cap), and the owner gets a tax credit on the personal return. This effectively moves state income tax off your personal Schedule A, potentially freeing up SALT capacity for property tax. PTET details are technical and require an annual election.

2. Charitable contribution conversion. New York established a charitable fund (and authorized similar local funds) where contributions can be made in lieu of property tax payments, with the contribution treated as charitable (no SALT cap) on the federal return. The IRS issued regulations (Reg. §1.170A-1(h)(3)) limiting this approach; for most taxpayers, the charitable contribution is reduced by a credit received, making the workaround ineffective. Practitioners generally don’t recommend this for property tax workaround purposes.

3. Bunching state estimated payments. If you can shift state income tax payments between years (paying 2027’s NYS estimated tax in December 2026), you might cluster the SALT cap impact in alternating years. Combined with bunching other itemized deductions (charitable, etc.), this can produce alternating high/low itemized years where in low-SALT years you’d take the standard deduction and ‘save’ the SALT for high years. The strategy requires careful cash-flow timing.

4. Federal cap may expire or change. TCJA’s SALT cap were extended through 2034 by the One Big Beautiful Bill Act (already extended through 2034 by the One Big Beautiful Bill Act). As of 2026, watch for legislation. The cap may be eliminated, increased ($20K+), or restructured. If the cap is removed, the full $8,400 property tax would again become federally deductible.

For your specific situation: claim the SALT cap of $40,000 (you’d hit it on state income tax alone), claim the $4,200 mortgage interest separately. Your Schedule A SALT line shows $10,000; your mortgage interest line shows $4,200. The state and city return will pick up the additional property tax deduction at the state/city level.

Goes to basis. Capital improvement assessments are not currently deductible — they’re an addition to your basis in the co-op shares, used to reduce gain at eventual sale.

The tax distinction: ordinary maintenance (covered by your monthly maintenance charges) is non-deductible operating expense (except for the §216 pass-through portion of property tax and mortgage interest). Capital improvements (major work that extends the building’s useful life or adds new functionality) are capitalized.

Facade restoration is the classic capital improvement: it’s a major project that maintains and extends the building’s useful life, costs are substantial, and the work isn’t routine maintenance. Under the tangible property regulations (Treas. Reg. §1.263(a)-3), this is a ‘restoration’ that must be capitalized.

Your $25,000 assessment is added to your basis in the co-op shares. Say your original basis was $500,000 (purchase price plus original closing costs). After this assessment, your basis becomes $525,000.

At eventual sale, your gain = sale price − adjusted basis. The $25,000 addition reduces gain dollar-for-dollar. If you eventually sell at $1.2M, gain = $1.2M − $525K = $675K (vs. $700K without the basis adjustment). At 20% federal capital gains rate, the $25K basis addition saves $5,000 of federal tax at sale. Plus state and city tax savings.

Tracking the basis adjustment: keep the assessment notice, the proxy/board materials describing the project, and your payment records. At sale (which may be 10-20 years from now), you’ll need this documentation to substantiate the basis addition. Without it, you may not be able to claim the higher basis.

When IS a special assessment deductible (rather than capitalized)?

– Operating shortfall assessments: if the co-op runs short on operating cash and issues a special assessment to cover operating expenses (not capital improvements), the operating portion follows normal §216 treatment. Property tax and mortgage interest components are deductible; operating expense components are not.

– Repair vs. improvement distinction: the line is fact-specific. Patching a section of facade with similar materials = repair (could be currently deductible component if it’s an operating-character expense). Complete restoration of the facade with reinforcement, new waterproofing, or expanded scope = improvement (capitalized).

– For a $25K shareholder assessment on a major facade restoration: clearly a capital improvement. Add to basis.

Other capital improvement assessments commonly encountered:

– Boiler replacement: capitalized.

– Elevator modernization: capitalized.

– Roof replacement: capitalized.

– Lobby renovation (substantial): capitalized.

– Lobby refresh (paint, light fixtures): may be deductible repair, but co-op boards typically capitalize for accounting purposes.

– Mechanical systems modernization (HVAC, plumbing): capitalized.

– Common area furniture replacement: borderline. If it’s a major aesthetic upgrade with new design, capitalized. If it’s like-for-like replacement of worn furniture, possibly deductible as a repair.

Look at the co-op’s board minutes and assessment notice for the characterization. Boards generally classify the work explicitly, and the IRS will follow that classification unless it’s clearly wrong.

Documentation pile: at the end of each year you should have the §216 letter (deductible items), notices of any special assessments paid (capital additions to basis), and a tracking spreadsheet showing your cumulative basis. Your accountant typically maintains the basis spreadsheet, but ask to see it annually so you know where you stand.

One strategic note: capital improvement assessments are non-cash from a tax perspective. They don’t generate a current-year deduction; they accumulate for the sale event. For owners planning to hold long-term and pass the apartment to heirs, the basis addition is wiped out by the step-up at death. The improvements get the basis step-up benefit, but you don’t get a current deduction in the meantime. Compare this to charitable giving or business investment that provide current deductions; capital improvement assessments are deferred-benefit deductions.

Yes — kitchen and bathroom renovations qualify as ‘substantial improvements’ to your home, which keeps the additional $200K within the deductible ‘home acquisition indebtedness’ category. Here’s the analysis:

Mortgage interest deduction under §163(h)(3) applies to ‘qualified residence indebtedness’ which includes home acquisition indebtedness — debt used to acquire, construct, or substantially improve the home. The post-TCJA cap is $750,000 for acquisition debt incurred after December 15, 2017.

For your $1.4M existing mortgage from 2018: this is post-12/15/2017 debt, so it’s subject to the $750K cap. You can deduct interest on only $750,000 of the $1.4M, even though you took the loan to buy your principal residence. About 54% of your interest is deductible; 46% is not.

For the new $200K cash-out refinance proceeds used for kitchen/bathroom renovation: substantial improvements qualify as home acquisition indebtedness. Under TCJA, debt used to ‘substantially improve’ the residence is added to your acquisition debt pool. So your new total acquisition debt is $1.4M + $200K = $1.6M.

But you’re still capped at $750K. The renovation doesn’t increase your deductible debt cap; it adds to your total acquisition debt, which is already above the cap.

Result: post-refinance, you have $1.6M of acquisition debt, $750K of which is deductible. Your deductible interest percentage = $750,000 / $1,600,000 = 47%. Slightly lower than before (was 54% with $1.4M debt) because adding $200K to the numerator without increasing the cap dilutes the deductible portion.

If you DIDN’T do the cash-out and only refinanced the existing $1.4M balance to a lower rate, your situation would stay: $1.4M debt, $750K deductible, 54% of interest deductible. Adding the renovation cash actually reduces the deductible percentage of interest (though it’s still better tax treatment than home-equity debt used for personal expenses, which would be 0% deductible post-TCJA).

Documentation: keep clear records showing the $200K was used for the kitchen and bathroom renovation: – Contractor invoices – Receipts for materials – Before/after photos – Permits if applicable – Bank records showing the cash-out funds flowing to the contractors

Without this documentation, the IRS could argue the $200K wasn’t used for substantial improvements (e.g., used for personal expenses, vacation, debt consolidation), in which case the entire $200K would be home-equity debt — and under TCJA, home-equity debt not used for substantial improvements is NOT deductible (the rule changed in 2018).

Substantial improvements vs. minor repairs:

– New kitchen with new cabinets, countertops, appliances, layout: substantial improvement (qualifies).

– New bathroom with new tile, fixtures, vanities: substantial improvement (qualifies).

– Replacing kitchen countertops only with similar materials: may qualify as substantial improvement (kitchen replacement is the standard project that qualifies).

– Painting and minor repair: typically not ‘substantial improvement.’ These are routine maintenance.

– Replacing carpet, refinishing floors: borderline. Major flooring replacement projects can qualify; minor maintenance does not.

The IRS guidance in Publication 936 (Home Mortgage Interest Deduction) defines ‘substantial improvements’ as adding to the value, prolonging useful life, or adapting to new uses. Renovating to modernize finishes and fixtures generally qualifies.

One complication: keep the renovation funds segregated from personal expenses. If you commingle the $200K with personal spending, the IRS may challenge what portion was used for substantial improvements. Best practice: open a separate account, deposit the $200K cash-out, pay contractors and materials suppliers from that account. The audit trail is clean.

Another consideration: the original 2018 mortgage is post-12/15/2017 grandfathered at $1M only if it was incurred specifically before that date. If you bought the property and the mortgage was originated after 12/15/2017, you’re at the $750K cap. If it was before, you could be at the $1M cap (though refinancing doesn’t necessarily preserve the higher cap — refinanced debt is generally subject to the new $750K cap, with grandfathering only for the portion that doesn’t exceed the original balance).

For your refinance: even if your original 2018 mortgage was grandfathered at $1M cap, the new refinance with cash-out generally moves you to the $750K cap on the new debt. Run this carefully with your tax preparer based on the exact origination date of the original loan.

Let’s work through the gain calculation step by step.

Step 1: Sale price (amount realized before adjustments) = $2,400,000.

Step 2: Subtract selling expenses to get net amount realized. – Broker commission (typically 5-6% in NYC): assume 6% = $144,000 – Flip tax (2% of sale price): $48,000 – Seller’s transfer taxes: NYS RETT (0.4% on most residential under $3M) = $9,600. NYC RPTT (1.425% on residential over $500K) = $34,200. – Seller’s attorney fees: estimate $5,000. – Title and closing costs: minimal for seller, but estimate $1,000. – Total selling expenses: $144,000 + $48,000 + $9,600 + $34,200 + $5,000 + $1,000 = $241,800. Net amount realized: $2,400,000 − $241,800 = $2,158,200.

Step 3: Calculate adjusted basis. – Purchase price (12 years ago): $1,600,000. – Closing costs at purchase (mansion tax in 2014 was 1% on $1M+ sales = $16,000; attorney fees, title, etc., assume $25,000 total): $25,000 added to basis. (Mansion tax itself, if paid by buyer at purchase, is added to basis.) – Capital improvements over 12 years (kitchen renovation, bathroom renovation, any major work): assume $80,000. Track these as you’ve done them; pull receipts from your files. – Special assessments paid for capital improvements: assume two assessments over 12 years totaling $30,000. – Adjusted basis: $1,600,000 + $25,000 + $80,000 + $30,000 = $1,735,000.

Note: monthly maintenance is NOT added to basis. It’s covered ongoing as either §216 deductions (for the property tax + underlying mortgage interest portions) or as non-deductible operating expense (for the rest). Maintenance doesn’t accumulate as basis.

Step 4: Capital gain = net amount realized − adjusted basis = $2,158,200 − $1,735,000 = $423,200.

Step 5: Apply §121 principal residence exclusion. If this was your principal residence for 2 of the last 5 years, you can exclude: – $250,000 if single – $500,000 if married filing jointly

Assume you’re married filing jointly: exclusion = $500,000. Your gain is $423,200, fully under the $500K exclusion. Federal taxable gain = $0.

If you’re single: exclusion = $250,000. Taxable gain = $423,200 − $250,000 = $173,200. Federal long-term capital gain at top 20% rate (assuming you’re in the top bracket otherwise) = $34,640. Plus 3.8% NIIT on the $173,200 = $6,581.

State tax (NY) on the gain: NY doesn’t conform to the §121 exclusion entirely — NY allows it for residents who satisfied the federal rules. So if your federal gain is $0 (married joint), NY taxable gain is also $0. If single with $173,200 federal taxable gain, NY taxes it at the marginal rate up to 10.9% = ~$18,879. NYC tax at up to 3.876% = ~$6,712.

Total tax burden: – Married joint: $0 federal + $0 state + $0 city = $0 – Single: $34,640 federal + $6,581 NIIT + $18,879 NYS + $6,712 NYC = $66,812

Big delta between married joint and single. The §121 exclusion is a meaningful benefit for married couples meeting the qualification.

Qualification reminders: – Owned the property for at least 2 of the prior 5 years (you’ve owned 12 years — well over). – Used the property as principal residence for at least 2 of the prior 5 years. – Have not excluded gain on another principal residence sale in the 2 years prior to this sale. – For married joint: both spouses must have used the home as principal residence (with some exceptions for surviving spouse).

If you’ve rented the apartment for portions of the last 5 years (vacation rental, traveler stays, etc.), you may face a ‘nonqualified use’ fraction that limits the exclusion under §121(b)(5). For full personal use over the last 5 years, full exclusion applies.

If you’re moving for a qualifying reason (job, health, unforeseen circumstance) but haven’t met the 2-of-5 test, you may qualify for a partial exclusion under §121(c).

Reporting: report the sale on Form 8949 (Schedule D). For co-op sales, the property is technically stock in the co-op corporation, but for §121 purposes it’s treated as a principal residence sale. Use the appropriate form lines.

Finally, double-check your records on capital improvements and special assessments. Reconstruct from co-op records, contractor invoices, and bank statements. Every $10K of additional documented improvements reduces gain by $10K. If you’re at the edge of the §121 exclusion (e.g., single filer at $250K exclusion vs. $300K gain), every basis dollar is worth tax savings.

The NYC condo/co-op property tax abatement has been around since 1996 and continues as of 2026, though with periodic changes to qualification criteria. The abatement isn’t being phased out broadly, but specific changes have affected certain building types.

What’s changed over time:

1. Original eligibility: any owner-occupied condo or co-op unit qualifies for the abatement, with reductions based on the building’s average assessed value per unit.

2. 2012 reforms: tightened eligibility for buildings with very high average assessed values (luxury buildings). The 17.5% reduction for buildings with average assessed value over $60,000 represents the bottom tier — these are typically newer luxury buildings.

3. 2019-2024 updates: NYC tightened residency verification, requiring annual certification that the unit is the owner’s primary residence. The Department of Finance now checks the residency claim against other records (driver’s license, voter registration, etc.).

4. Current threshold to track (as of 2026): the abatement requires the unit to be the owner’s primary residence on January 5 of the abatement tax year (the first day of the second half of the prior fiscal year). Renting, second-home use, or pied-à-terre use disqualifies.

How to find out if your building qualifies:

1. Check your annual NYC property tax bill (condo owners) or your co-op’s annual financial statements (co-op owners). The abatement should appear as a line-item reduction in the tax calculation. If the building’s average assessed value is over $50,000 per unit, you should see the 17.5-28.1% abatement applied.

2. Ask your building’s managing agent. They file the abatement paperwork annually with NYC DOF and know whether the building qualifies and what the abatement percentage is.

3. NYC DOF online lookup: NYC DOF abatement page lets you check building eligibility by entering the address or BBL (Borough-Block-Lot).

Why you might not qualify:

– You’re not the primary resident (rental, second home, pied-à-terre).

– The unit is held in a trust or LLC structure that doesn’t qualify (some structures preserve eligibility; others don’t).

– The building failed to file the annual certification.

– The unit had a use change (e.g., conversion to office use).

– The owner is over the income limit for certain expanded abatement categories (less common — most owners aren’t subject to income limits).

Deductibility implications:

For co-op shareholders (§216 pass-through): the abatement reduces the co-op’s net property tax expense. Your pro-rata share of property tax (the deductible §216 item) is the net amount after abatement. Lower deductible amount.

For condo owners: the abatement reduces your direct NYC property tax bill. Lower deductible amount (subject to the $10K SALT cap, which usually makes this irrelevant for federal but matters for NY state and NYC tax purposes).

The abatement is a positive — your overall tax cost is lower. The fact that it reduces a deduction is a secondary effect.

If you find your building isn’t receiving the abatement and you believe it should be:

1. Talk to the managing agent first. There may be a filing problem they can correct.

2. If the building isn’t filing annually, push the board to do so. The form is simple and the abatement is meaningful to all primary-resident owners.

3. Verify your primary residence status is documented correctly. NYC DOF cross-checks against various records and may require additional documentation.

4. For new buildings, the abatement may not have been claimed yet because the building hasn’t completed all required filings. New construction has additional certification requirements before the abatement kicks in.

Alternate or supplemental NYC programs:

– Senior Citizen Homeowners’ Exemption (SCHE): for owners over 65 with income under specified limits, additional property tax reduction.

– Disabled Homeowners’ Exemption (DHE): similar for disabled homeowners.

– Veterans’ Exemption: property tax reduction for veterans.

– STAR (School Tax Relief): state-administered, applies to NYC owners as well, modest reduction in school tax portion.

These stack with the condo/co-op abatement in some cases. Eligibility is income-based and age/disability-based. Check NYC DOF for the current rules and limits.

One tax-planning note: the abatement is taxable income? No, it’s a reduction in tax owed, not income. You don’t report it as income; it just lowers your tax bill. The reduction in your deductible property tax is automatic — you deduct the net amount paid, not the gross amount that would have been owed without abatement.