The true cost of owning.

Sponsor contracts may assign seller transfer taxes and a working-capital contribution to the buyer. These are contract assumptions, not universal buyer charges; confirm the offering plan and contract with your attorney.

Months of current common charges; editable planning assumption.

NYC’s mansion tax applies to the whole price once you cross a threshold. At $1,999,999 it’s 1%; at $2,000,000 it’s 1.25% of the full amount.

Many co-op boards require 20% or more down; some require much more.

Co-op financing is not modeled with NYC mortgage recording tax. For condos and 1–3 family homes, this model uses the typical borrower share of 1.8% below $500,000 and 1.925% at $500,000 or more. CEMA, exemptions and lender allocations can change the amount.

Co-op maintenance includes your share of the building’s property taxes.

Townhouse owners are responsible for building-level upkeep. The amount shown is an editable planning assumption, not a prediction. Apartment owners may also face interior repairs and special assessments.

Enter your own allowance. Default is $0 so the calculator does not invent a closing-cost figure.

This is a planning assumption for the tax bill, not a statutory rate. Tax class, assessed value, rates, exemptions and abatements can change the actual bill.

Common charges and repairs rise with inflation.

Maintenance and repairs rise with inflation.

Repairs rise with inflation.

Enter only a known Department of Finance annual surcharge amount. It is based on DOF market value and residence status, not purchase price, and this calculator does not extrapolate it beyond the known enacted period.

The surcharge continues beyond the first two years, but the condo/co-op valuation method changes starting in FY 2029. Use the current DOF amount only for as many years as you intentionally want to model; this calculator does not assume the amount stays unchanged.