Quick takeaways

  • This escrow (sometimes called an impound account) collects a portion of your taxes and insurance every month, then pays those bills for you.
  • Your servicer estimates the amount using your annual tax and insurance bills, divided by 12, plus a small cushion.
  • An annual escrow analysis can raise or lower your payment if the estimate was off.

Two different “escrows” — worth separating clearly

The word “escrow” does double duty in home buying, and it trips people up constantly:

  • Purchase escrow — the neutral third party holding your earnest money during the sale. See Earnest Money & Escrow, Demystified.
  • Mortgage escrow (impound account) — what this page is about: an ongoing account, set up once you own the home, that collects money monthly for taxes and insurance.

What a mortgage escrow account actually does

Think of it this way: instead of you saving up separately for one or two big annual bills (property taxes, homeowners insurance), your loan servicer collects a portion of those costs every month along with your regular mortgage payment. When the actual tax or insurance bill comes due, the servicer pays it directly from that account on your behalf.

How the monthly amount is generally calculated

  1. Your servicer estimates your annual property tax bill and annual insurance premium
  2. Those two numbers are added together and divided by 12
  3. A small cushion is often added, generally allowed up to a certain limit, to cover estimate errors
  4. That total becomes the escrow portion of your monthly mortgage payment

The annual escrow analysis

Once a year, your servicer typically reviews the account — comparing what was collected to what was actually paid out. Here's the part that surprises a lot of people: this can mean your monthly payment changes even if your interest rate never does, simply because tax or insurance costs shifted.

  • Escrow shortage — not enough was collected, so your monthly payment (and sometimes a one-time catch-up amount) typically increases
  • Escrow surplus — too much was collected, which can result in a refund or a lower future payment, depending on the amount and your servicer's policy

Is an escrow account required?

It depends on your loan. Escrow accounts are commonly required for loans with less than 20% down and for many government-backed loans (like FHA). For some conventional loans with more equity, an escrow account may be optional, though rules vary by lender and investor guidelines — worth asking your lender directly.

What this guide is not

This explains general concepts only, not your specific escrow balance or servicer's policies. Your loan servicer can explain your actual account details and any recent changes to your payment.

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