Mortgage escrow · 12 CFR 1024.17Escrow shortage: why the mortgage payment goes up after the first year
Most mortgages collect property taxes and insurance through an escrow account. Federal Regulation X lets the servicer collect one-twelfth of the expected yearly taxes and insurance each month plus a cushion of no more than one-sixth of the yearly total (12 CFR 1024.17(c)). Each year the servicer re-analyzes the account. If the new tax bill – often higher after a purchase, once the seller's exemptions and caps fall away – leaves the account short, the payment rises for two reasons: the higher monthly amount, and repayment of the shortage. A shortage of a month's escrow payment or more may only be spread over at least 12 months; a smaller one may be billed within 30 days or spread over 12 months (§1024.17(f)(3)). A surplus of $50 or more must be refunded within 30 days if the borrower is current (§1024.17(f)(2)).
What Regulation X allows
Monthly deposit
One-twelfth of the taxes, insurance and other escrowed charges expected for the year (§1024.17(c)(1)(ii)).
Cushion
No more than one-sixth of the estimated yearly payments – about two months (§1024.17(c)(1)).
Analysis
When the account is set up and at the end of each computation year (§1024.17(f)(1)).
Shortage under one month
Servicer may leave it, ask for it within 30 days, or spread it over at least 12 months (§1024.17(f)(3)(i)).
Shortage of one month or more
Servicer may leave it or spread it over at least 12 months – not demand it at once (§1024.17(f)(3)(ii)).
Surplus
$50 or more refunded within 30 days of the analysis if the borrower is current (§1024.17(f)(2)).
How a new owner can avoid the surprise
- Estimate taxes from the purchase price and your own exemptions, not the seller's bill.
- File the homestead or homeowner's exemption on time so the next bill reflects it.
- Read the initial escrow account statement at closing and the first annual analysis.
- If a shortage is billed, check the analysis against the actual tax and insurance bills.
What the TC can flag before closing
- A big gap between the seller's tax bill and the buyer's expected bill.
- Supplemental or reassessment bills that may arrive after closing.
- The buyer's exemption filing deadline as a post-closing task.
Questions homeowners ask
Why did my mortgage payment go up after the first year?
Usually because property taxes or insurance rose, so the escrow analysis raised the monthly deposit and added repayment of any shortage (12 CFR 1024.17).
Can the servicer make me pay an escrow shortage all at once?
Only if the shortage is less than one month's escrow payment, within 30 days. A shortage of a month or more must be allowed over at least 12 months.
How big can the escrow cushion be?
No more than one-sixth of the estimated total yearly payments from the account (§1024.17(c)).
Related guides
Add the buyer's exemption filing and a first-year escrow check to the post-closing checklist as tasks with an owner and due date in ClosingCode.
Start free trialSource: Regulation X, 12 CFR 1024.17 (consumerfinance.gov, read October 25, 2026).
General information, not legal or financial advice. ClosingCode is software; it is not a law firm, lender or brokerage. This guide is not a substitute for the advice or services of an attorney.