Your mortgage statement arrived, and the payment is higher than last year. The rate didn't move. The balance went down. So where did the extra money come from?
In most cases the answer is your escrow account, and the most common driver of an escrow increase is a change in property taxes. When the county reassesses your home, the tax bill changes, your servicer re-runs the escrow math, and the new number shows up in your monthly payment, sometimes with a catch-up amount attached.
Smart people get caught off guard by this every year, because the process is split between the county and your servicer and neither one explains the full chain. This guide walks through what triggers a reassessment, how the escrow analysis turns a tax change into a payment change, and what you can do about it.
Why an escrow increase usually starts with property taxes
An escrow account is a holding account your mortgage servicer manages. Each month, part of your payment goes into it, and the servicer uses that money to pay your property taxes and homeowners insurance when the bills come due. The CFPB has a plain-language explainer on how escrow accounts work.
Your principal and interest are set by your loan. On a fixed-rate mortgage they stay the same for the life of the loan. The escrow portion is different. It has to track whatever the tax collector and the insurance company charge, and those numbers move.
Insurance premiums can push escrow up too. Property taxes are the piece most people don't see coming, because the change starts with a valuation notice that reaches your mortgage payment months later.
What triggers a property tax reassessment
Your tax bill is roughly the assessed value of your home multiplied by the local tax rate, minus any exemptions you qualify for. A reassessment changes the first part of that equation. These are the usual causes.
You bought the home
This is the biggest one. In many states, a sale resets the assessed value to current market value. The seller may have owned the home for 15 years under an assessment cap, with a homestead exemption, paying taxes on a value well below what you paid.
Your first escrow account was likely set up using the seller's tax bill, because that was the only bill available at closing. Then the county reassesses the home at your purchase price, the next tax bill arrives much higher, and your servicer discovers the account is short.
Your county ran its scheduled revaluation
Counties reassess on cycles set by state law. Some revalue every year, some every three years, some every five or eight. When a cycle lands after a stretch of rising home values, many homeowners in the same county see their escrow increase at once.
You improved the property
An addition, a finished basement or a new pool can raise assessed value. Building permits are often shared with the assessor automatically.
An exemption dropped off or was never filed
Homestead exemptions, senior exemptions and disabled veteran exemptions usually require an application. If you never filed after buying, or an exemption lapsed because of a move, a name change or a missed renewal, your taxable value can rise even when market value didn't.
For veterans, this one is worth a close look. Many states offer property tax relief for veterans with a service-connected disability rating, and some offer full exemptions at higher ratings. That benefit was earned through service. It isn't applied automatically, though, so check with your county property appraiser or tax assessor's office.
How state rules change the math
Assessment caps explain why two identical houses on one street can carry very different tax bills. The rules vary a lot by state.
In Florida, the Save Our Homes cap limits how much a homesteaded property's assessed value can rise each year to 3% or the change in the Consumer Price Index, whichever is lower. When the home sells, the cap ends, and the new owner is assessed at full just value as of the following January 1. Florida does let owners carry part of their accumulated benefit to a new Florida homestead, up to $500,000, through portability. But you have to apply for it.
In Maryland, properties are reassessed once every three years. Increases are phased in over the three-year cycle, while decreases take effect right away. The Homestead Tax Credit limits taxable assessment increases on an owner-occupied principal residence to 10% a year for state purposes, and many counties set a lower cap. The credit requires an application.
In South Carolina, counties reassess on a five-year cycle, and the increase in value for a reassessment is generally capped at 15% unless the property changes hands. The lower assessment ratio for an owner-occupied home also requires an application.
In North Carolina, counties must reappraise at least once every eight years, so the jump in a reappraisal year can be large.
In all four states, a sale or a missing application is what usually separates a modest escrow increase from a painful one.
How the escrow analysis turns a tax change into a payment change
Federal rules under RESPA's Regulation X, section 1024.17 govern how servicers run escrow accounts. Once a year, at the end of each 12-month computation year, your servicer must analyze the account. It projects the next 12 months of tax and insurance bills, sets a new monthly escrow amount, and compares what is in the account against what should be there. Within 30 days after that year ends, you get an annual escrow statement showing the result.
Three things can push the payment up after a tax increase, and they stack.
- A higher monthly deposit going forward, because the projected tax bill is bigger.
- Repayment of a shortage. If the servicer paid a bigger tax bill last year than the account was collecting for, the account ends up below its target, and that gap has to be repaid.
- A larger cushion. Servicers may hold a cushion of up to one-sixth of the year's projected escrow bills, about two months of escrow payments. When the bills go up, the allowed cushion goes up with them.
An illustrative example
Here is a simplified example with round numbers. Your own statement will differ.
Say your annual property tax was $3,600 and your insurance was $1,800. Your escrow deposit was $450 a month. After a reassessment, the tax bill rises to $4,800, and insurance stays flat.
The new monthly need is $550, which is $6,600 a year divided by 12. Last year, though, the account collected for $5,400 in bills and paid out $6,600, so it is about $1,200 behind. The two-month cushion also grows from $900 to $1,100. Together that is a shortage of roughly $1,400.
If the shortage is spread over 12 months, that adds about $117 a month. Your escrow portion goes from $450 to roughly $667 for the coming year. If taxes hold steady after that, it should settle back to about $550 the year after, once the shortage is repaid.
That is why the first escrow increase after a reassessment often looks bigger than the tax increase itself. You are paying the new level, catching up on the old gap and refilling a larger cushion, all in the same year.
Your options when the escrow statement lands
You have more control here than it may seem.
Read the shortage rules on your statement
Regulation X limits how a servicer can collect a shortage. If the shortage is less than one month's escrow payment, the servicer may ask you to repay it within 30 days or spread it over at least 12 months. If it is one month's escrow payment or more, the servicer can't demand it as a 30-day lump sum. It must give you at least 12 months of equal installments, if it asks for repayment at all.
Decide whether to pay the shortage up front
Most servicers let you pay a shortage in one payment, which removes the catch-up portion from your monthly bill. It is a cash-flow choice. If that cash is your emergency cushion, spreading it out is perfectly reasonable.
Check the statement for errors
Look at the tax amount the servicer paid and compare it to your actual county tax bill. Errors happen, especially after a servicing transfer. If something looks wrong, you can send your servicer a written notice of error. Regulation X, section 1024.35 requires servicers to acknowledge and investigate these notices within set timeframes.
Know that surpluses come back to you
The rule works in your favor too. If the analysis shows a surplus of $50 or more and you are current on your payments, the servicer must refund it within 30 days. A surplus under $50 can be refunded or credited toward next year.
How to appeal a property tax assessment
If you think the county overvalued your home, an appeal goes after the cause of the escrow increase instead of the symptom. The details vary by state and county, but the process generally looks like this.
- Find the assessment notice and note the deadline. Appeal windows are short. In Florida, for example, a petition to the value adjustment board is due within 25 days after the annual TRIM notice is mailed. Other states allow 30 to 60 days or more from the assessment notice.
- Check the property record for errors. Wrong square footage, an extra bathroom, a pool you don't have or the wrong condition rating are common and are often fixed informally with a phone call to the assessor's office.
- Gather comparable sales. Recent sales of similar nearby homes are the strongest evidence. A recent appraisal, such as one done for a refinance, can also help.
- File the appeal and attend the hearing. Many counties offer an informal review first, and a formal board hearing if that doesn't resolve it.
A successful appeal reaches your payment only after the servicer gets the corrected bill, so send it a copy and ask about an early escrow analysis.
Before you appeal, also confirm that every exemption you qualify for is on file. A missing homestead or disabled veteran exemption is often a bigger and faster fix than contesting the value.
Does refinancing change your property taxes?
In most states, refinancing doesn't count as a change of ownership, so it doesn't trigger a reassessment by itself.
A refinance does set up a new escrow account, though. At closing, the new loan collects an initial escrow deposit based on the current tax and insurance bills, and the old servicer refunds whatever was left in your previous escrow account, usually within a few weeks. If you are refinancing shortly after a reassessment, the new escrow will reflect the higher tax bill from day one, so no surprise shortage follows later.
If an escrow increase has squeezed a budget that was already carrying credit card or other high-cost debt, the payment change is worth looking at alongside everything else you owe. The useful question is what all of your monthly obligations cost together, and whether a different structure lowers that total over time. Your mortgage rate is one input to that answer. Sometimes the answer is to change nothing. A GoodLoan loan officer can lay out the full picture with your real numbers, including closing costs and how long it would take to come out ahead, and we will tell you plainly when a refinance doesn't make sense. GoodLoan is licensed through the NMLS and is VA-approved.
Frequently asked questions
Why did my escrow go up if my property taxes only rose a little?
The first year after an increase usually includes three things at once: the new, higher monthly deposit, repayment of last year's shortage and a larger cushion. Once the shortage is repaid, the payment typically drops back toward the new monthly need, as long as taxes and insurance hold steady.
Can my servicer make me pay an escrow shortage all at once?
Only if the shortage is less than one month's escrow payment. For a shortage of one month's payment or more, federal rules require the servicer to allow repayment over at least 12 months. You can still choose to pay it in one lump sum if you prefer.
How often do escrow payments change?
Your servicer must analyze the escrow account once every 12 months and send you an annual escrow statement within 30 days after the computation year ends. Payments can change at each analysis. A servicer may also run an analysis mid-year, for example after a large unexpected bill.
Does a property tax appeal lower my mortgage payment right away?
Not right away. A successful appeal lowers the tax bill, but your escrow payment changes only after the servicer gets the corrected bill and re-analyzes the account. Send the revised bill to your servicer and ask about an early analysis.
Will refinancing reset my property tax assessment?
In most states, no. A refinance is not a change of ownership, so it doesn't trigger a reassessment. It does create a new escrow account funded at closing, and the old servicer refunds your previous escrow balance.
