It is the kind of math that makes people stop mid-scroll. You are in your late twenties, you have a steady job, you are doing what the personal finance content told you to do — setting aside a little every month, skipping the vacation, making the coffee at home. And according to a new analysis reported by Curbed, you will be in your late forties before you can afford a down payment on a New York City apartment.

The average savings timeline for a standard down payment in the five boroughs now sits at approximately 20 years, the analysis found. That figure assumes a buyer is saving consistently against median income numbers in a city where median rent alone consumes a larger share of take-home pay than almost anywhere else in the country.

The compounding problem is the moving target. Home prices in New York have continued to rise at a pace that outstrips typical savings rates, meaning the finish line shifts forward even as buyers inch toward it. Save diligently for five years, and the required down payment may have grown by more than you managed to put away.

The practical effect is a generation of would-be buyers locked into renting longer than they planned, in a rental market that has itself grown considerably more expensive. The window between “I can afford to rent here” and “I can afford to buy here” has not narrowed — it has widened into something closer to a career span.

The Curbed piece did not name a single city neighborhood where the math looked friendlier. It did not have one.