By Randy Kozlowski, Chief Strategy Officer, LERETA
Most of the conversations around escrow surprises are centered on the borrower experience. The payment shock. The calls to the service center. The frustration when a fixed-rate mortgage suddenly feels anything but fixed. Those are real and important problems. But there is a cost that lands on the servicer first, often well before a borrower ever opens their statement. It shows up as an escrow advance, and for servicers managing large portfolios, it adds up fast.
Understanding how that cost accumulates, and what operational decisions drive it, is increasingly important. Property tax assessments and taxable values are rising in markets across the country. Insurance premiums are following a similar trajectory. A November 2025 analysis from Zillow and Thumbtack tracked the hidden costs of homeownership, including property taxes, insurance, and maintenance. Those costs now average $15,979 per year nationally, rising 4.7% year over year. That pace has consistently outstripped household income growth.
The pressure on escrow balances is structural, not cyclical. Servicers whose tax data and analysis timing have not kept pace are carrying the cost.
What an Escrow Advance Actually Represents
When a property tax installment or insurance premium comes due, the escrow balance may be insufficient to cover it. In that case, the servicer has two choices: delay the payment or advance the funds. Most servicers advance, because late tax payments create their own risks, including penalties, interest, and potential lien priority issues.
The stakes are equally high on the insurance side. A lapse in coverage not only violates the terms of the mortgage agreement. It also leaves the property exposed to total or significant loss in the event of a catastrophic event. In that scenario, no insurance recovery is available to protect either the borrower or the servicer’s collateral position.
That advance is real money leaving the servicer’s books. It covers a shortfall that the escrow analysis did not anticipate or catch in time. The servicer is, in effect, lending against a future escrow collection. That collection may or may not arrive on the expected schedule.
At the loan level, a single advance is manageable. Across a portfolio of tens or hundreds of thousands of loans, that single advance adds up. In jurisdictions where assessments have moved significantly, the exposure becomes material.
ATTOM’s 2025 Annual Property Tax Analysis found that $396.8 billion in property taxes were levied on single-family homes in 2025. That figure was up 3.7% from 2024, and the average bill rose to $4,427. Notably, the national effective tax rate reached 0.9%, its highest level since 2020. That happened even as average estimated home values declined slightly year over year.
Tax bills are no longer simply tracking home values. They are being driven by local budget pressures and deferred reassessment cycles catching up all at once.
The escrow advance problem is largely a data problem. And it is, in large part, preventable.
The Timing Problem
By law, servicers are required to conduct escrow analyses on most first mortgage accounts at least once per year. The mechanics of when those analyses happen, and which tax data informs them, determine whether they accurately reflect what the borrower will actually owe.
Two common scheduling approaches illustrate where the exposure lives.
The statement-date approach runs the escrow analysis based on the borrower’s statement cycle. It is administratively straightforward and distributes workload evenly throughout the year. But it frequently runs the analysis between tax cycles, meaning the servicer may be estimating a future tax bill before the actual installment amount is known. In jurisdictions where the second installment is calculated based on year-end reconciliation rather than a flat split, that estimate can be substantially short.
Cook County, Illinois, is a well-documented example. As we have covered in prior posts on escrow analysis timing, the county’s two-payment cycle uses a provisional first installment equal to 55% of the prior year’s annual tax, with the second installment reflecting the full year’s obligation. Running an escrow analysis after the first installment, without the benefit of the second, creates exactly the kind of underestimation that results in a shortage and, eventually, an advance. For 2025, Cook County’s second-installment bills averaged a 16% increase, with some neighborhoods seeing far steeper jumps.
The tax-cycle approach addresses this by running the escrow analysis only after a full year of tax payments has been made. The analysis reflects actual, known obligations rather than estimates. Servicers using this method consistently see fewer surprises and fewer advances. In fact, our own analysis found that a large servicer using the statement-date approach was advancing millions of dollars annually to cover escrow shortfalls, a cost that could be significantly reduced simply by aligning the analysis schedule to the tax cycle.
When Assessments Move and Data Does Not
The tax-cycle approach is the right foundation, but it is not sufficient on its own in a market environment where assessed values are moving significantly between billing cycles.
Property tax assessments are not always predictable. Many jurisdictions reassess on a 1- to 4-year cycle rather than annually. When home prices surged 30 to 40% between 2020 and 2022, many counties had not yet updated their assessments. As those reassessment cycles complete, homeowners, and by extension their escrow accounts, are absorbing years of accumulated appreciation in a single notice. ATTOM’s data reflects this: tax bills rose in 2025 even as home values declined slightly, because the reassessment clock runs on its own schedule.
Mid-cycle adjustments, disaster-related reassessment programs, and the outcomes of mass appeal cycles can all shift what a borrower will actually owe in ways that trailing data does not capture.
If a servicer’s escrow analysis is based on tax data that is six, nine, or twelve months old and assessments have moved significantly in that window, the analysis will underestimate the obligation. The advance fills that gap.
This is where the quality and currency of tax monitoring data become a direct operational and financial variable, not just a compliance input.
The Off-Cycle Analysis Case
For portfolios concentrated in markets with significant assessment volatility, off-cycle escrow analyses are worth considering. Most servicing systems support trial analyses that allow servicers to model projected shortages before they materialize. If the trial shows a sharp spike in projected advances for a specific geography or installment period, that is a signal to act ahead of the billing cycle rather than after.
The cost of running additional analyses has historically made this approach impractical at scale. But as the cost of advances rises alongside increases in assessments and premiums, the calculus is changing. A well-timed off-cycle analysis that prevents a significant advance position may pay for itself many times over.
The prerequisite for that kind of proactive analysis is having tax data that is current, accurate, and granular enough to identify where the exposure is building.
What Accurate Tax Data Actually Enables
The conversation about property tax monitoring often starts and ends with delinquency prevention. Making sure payments go out on time, to the right taxing authority, in the right amount. That is foundational and remains important.
But the operational value of accurate, timely tax data extends well beyond payment execution. It informs escrow analysis quality, advance risk modeling, off-cycle analysis decisions, and the accuracy of shortage projections that determine what borrowers are asked to pay.
Servicers who treat tax data as a compliance input, checked at payment time and otherwise static, are operating with a significant blind spot. The gap between what their data says and what a taxing authority will actually bill is where escrow advances come into play.
Servicers who treat tax data as a continuous operational input, one that informs portfolio-level decisions about analysis timing, advance exposure, and proactive borrower outreach, are better positioned to manage the cost environment that has developed over the past several years.
Getting Ahead of the Problem
The path forward for servicers is less about any single operational change and more about the underlying data and analytical infrastructure that escrow decisions rest on.
A tax cycle analysis schedule can be informed by current assessment data across thousands of taxing jurisdictions. When it is also capable of modeling portfolio-level exposure before installment periods arrive, it gives servicers real visibility. That visibility lets them act rather than react. The advances that result from being caught off guard are not inevitable. They are largely a function of how well a servicer’s tax data reflects reality. That reality is what is actually being assessed.
LERETA’s tax monitoring and escrow solutions are built around that principle. LERETA provides nationwide tax data coverage, updated continuously. That gives servicers an accurate picture of what each loan in their portfolio is likely to owe, and when. That visibility is the foundation for smarter analysis timing, fewer surprises, and a materially lower cost of escrow advances.
The borrower experience matters. But the servicer’s advance position is the financial consequence that precedes it. Addressing both starts with the same thing: knowing what the tax bill is actually going to be before it arrives.
Ready to learn more about how LERETA’s tax monitoring solutions can reduce escrow advance exposure across your portfolio? Connect with our team.
