Free tool · New construction

New build payment, the year after.

First-year taxes on a new build are often based on a lower, pre-completion assessment. This estimates what your payment could look like once the county catches up. No signup, no email.

Why this happens

Your first tax bill is not your real tax bill.

A new-construction lender usually sets your escrow off whatever assessed value exists at closing, often land only, or a partial build. Texas and Oklahoma both reset a property to its full assessed value the year ownership changes, and neither state's annual value cap protects a buyer's first year. Read the Texas and Oklahoma property tax playbooks for how that reset works in each state.

The estimator

Run your own numbers.

Enter your purchase price, your county's real tax rate, and what your lender currently collects for taxes each month. Do not know your county's rate yet? Look it up by county first.

Use the real combined rate for your county from the property tax pages, not a guess.

Find this on your closing disclosure or your most recent mortgage statement, in the escrow breakdown.

Estimated new monthly tax escrow

$583/ mo

Your current monthly escrow
$150
Monthly jump
+$433
12-month shortage illustrationIf the jump isn't caught until your next escrow analysis
$5,196

Educational estimate only, not a bill, a quote, or tax advice. It assumes your county reassesses at full purchase-price-level value, which is common for new construction but not guaranteed on any timeline. Assessment practices vary by county and by state. Your lender's real escrow analysis and your county assessor's actual notice set the real numbers.

How this math works

Nothing here is hidden

Estimated new monthly escrow = Purchase price × County tax rate ÷ 12

Monthly jump = Estimated new monthly escrow − Your current monthly escrow

12-month shortage illustration = Monthly jump × 12

The shortage line is an illustration, not a prediction. It shows roughly what could build up if your escrow stayed at the old, too-low monthly amount for a full year before your lender's next annual escrow analysis catches the gap. Most servicers either bill the shortage as a lump sum or spread it across the following year's payments. Ask your servicer which one they do.

Questions

Straight answers.

Why would a new build's first-year tax escrow be so much lower than reality?

Most counties assess a new construction property based on its condition on a fixed date each year, which can fall before the home is finished or even before it existed as a taxable structure. Your lender sets your first escrow payment off whatever tax figure is available at closing, which is often land value or a partial assessment, not the completed home at your purchase price. When the county catches up and reassesses at full value, often the year after you close, the tax bill and your escrow payment both jump.

Is this the same thing as the homestead exemption or the value cap?

Related, but different. Texas and Oklahoma both reset a property's assessed value to full value the year ownership changes, and neither state's annual value cap protects a buyer in that first year. A homestead exemption can reduce the bill once it's in place, but it does not prevent the initial jump from an artificially low starting assessment. See the Texas and Oklahoma property tax playbooks for exactly how each mechanism works.

Does this tool file anything or talk to my lender?

No. It is a plain calculator that runs the math you enter, on your device. It does not save your numbers, submit anything, or require an email. If you want a real read on a specific property, talk to your lender about their escrow analysis and to Cody about the actual county rate.

Keep going

More free tools and guides.

The full mortgage calculator models your real payment with homestead exemptions built in. The free guides library covers property tax, insurance, mortgage readiness, and buying rural.