NYC Rate Sensitivity

What your budget does when rates move, and what a building's monthly charges really cost.

Rates & monthly charges

What if rates move? What's $100 of maintenance worth?

A co-op's maintenance or a condo's common charges count against your income exactly like a mortgage payment does, so a building with high charges shrinks your budget the same way a higher rate does. This reruns the co-op and condo calculators at every rate (or every charge level) and shows which limit moves: the one set by your income, or the one set by your cash.

Your situation
Buying a
What moves
$
$
$
$
$
Assumptions (defaults from our sources page)
%
Freddie Mac average, week of Sep 17, 2026
$/mo
%
%
mo
$/mo
$/mo
%

Everything is calculated in your browser. Nothing you enter is sent anywhere.

Your answer
At today's rate, you can buy up to
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1 point higher
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1 point lower
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Income limit, per point
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$100/mo of maintenance is worth
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Calculated estimates from your inputs and the assumptions on the left, not market data or a rate quote.

Max price at each mortgage rate
  • Income limit (DTI)
  • Cash limit (down payment, closing, reserves)
  • Your max: the lower line

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Show as a table
How this works

Two limits, one budget. Your income sets a ceiling: the price where mortgage, PMI, and the building's monthly charges (plus property tax and insurance for a condo) hit the DTI limit. Your cash sets another: the price where the down payment and closing costs (and for a co-op, the board's post-closing reserves) use up what you have. Your max price is whichever is lower. Each point on the chart is the full co-op or condo calculation, rerun with one number changed.

Rates move the income limit a lot and the cash limit a little. A higher rate means a bigger payment on the same loan, so the income limit drops. The cash limit for a condo doesn't care about the rate at all; for a co-op it moves a bit, because the board's reserve requirement counts months of mortgage payments. If cash is your tighter limit, a rate drop may barely change what you can buy.

Maintenance is a rate in disguise. Lenders and boards count maintenance and common charges dollar for dollar against your income, same as the mortgage. The "worth" tile converts $100/month of charges into the rate change that would cost you the same buying power, which is handy when comparing two buildings at different charge levels.

What it can't see: rate quotes for your credit and loan size, points and buydowns, adjustable-rate loans, or how a building's charges will change. The mortgage-rate default is the Freddie Mac weekly average, not an offer. See how mortgage rates affect NYC affordability, what else moves your number, and the methodology.