Why Your Mortgage Payment Can Increase After You Buy a Home

You buy a home, your payment looks set, and then a year later, it jumps. That feels unfair, but it’s common.

If your mortgage payment jumps in year two, it usually has nothing to do with your interest rate, but the estimated property taxes and homeowners’ insurance you paid in year one.

The payment you see at closing is often based on estimates

Your monthly “mortgage payment” typically includes four costs: principal, interest, property taxes, and homeowners' insurance.

Most monthly payments include four parts.

Principal is the amount that pays down what you borrowed.

Interest is the fee the bank charges for a loan.

Property taxes are what your city or county charges each year.

Homeowners' insurance is what you pay to protect your home.

Principal and interest stay the same on a fixed-rate mortgage. However, property taxes and insurance can change, so your total payment may change.

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Understanding Your Escrow Account

When you initiate a mortgage payment, the lender will collect property taxes and insurance for you. This is called escrow.

Escrow is like the lender holding a savings account on your behalf. You pay a little bit each month. When the tax bill and insurance bill are due, the lender pays them for you.

So if taxes or insurance go up in the following year, the amount you have to set aside in your escrow account goes up, and your monthly mortgage payment will also increase.

The “partial property taxes” effect in year one

A lot of first-time buyers get caught here.

In the first year, the property tax amount used in your payment can be based on old information, such as the previous owner’s tax bill or a tax amount that does not yet reflect the new purchase price.

Later, the county updates the home’s value for tax purposes. When the value is updated, the tax bill increases. When the tax bill increases, your escrow increases.

Sometimes your lender also has to “catch up” because they did not collect enough escrow in year one to cover the real bill. That can make the payment jump feel bigger.

Here’s the simple version.

Your year-one escrow is based on a lower tax bill. In year two, your tax bill increases, and your lender raises your monthly payment so you have enough money to pay the higher bill.

A quick example so the math is clear

Assume your property taxes were estimated at $3,000 for the year. That’s $250 per month.

Then the county updates the taxes, and the real bill becomes $4,800.

That’s $400 per month. That change alone is $150 more per month. $400 - $250 = $150 difference.

Your monthly payment could rise by $150 due to taxes alone, even though your loan rate did not change.

Property taxes are not the only reason the payment can increase

Even if your property taxes don’t change, your payment can increase if homeowners' insurance premiums increase, which has been common in many states, especially Florida and Texas, which are prone to bad weather. Mortgage insurance (PMI) can be added if your down payment was small, and it can change based on the loan type and balance.

HOA dues can increase if your neighborhood has an HOA.

If you have an adjustable-rate mortgage, the interest portion can increase later. And, if you’re not careful, it could make your payment unaffordable. On a fixed-rate mortgage, the interest portion should not change, but taxes and insurance can.

How to plan for future increases before you buy

Start by treating the first-year payment as a starting point, not a guarantee. Before you commit to a purchase, you want a realistic view of the ongoing “all-in” cost.

1. Ask your lender what they used for property taxes in the payment estimate. Was it the current tax bill on the home, or an estimate?

2. Research the current property taxes on the county property appraiser or tax collector website. If the taxes seem low compared to the purchase price, determine if you need to set aside funds for future tax assessments.

3. Pan a buffer. When you build your budget, add a monthly cushion for taxes and insurance increases. Even $100 to $200 per month set aside can keep you calm if escrow changes.

4. File any exemptions quickly if available in your city/state, such as homestead exemptions. If you are a 100% disabled veteran, determine if your state exempts you from property taxes, and file timely. Missing the filing window can mean higher taxes until you file.

   1. Note: You still may have to pay non-ad valorem assessments for fire, waste, and stormwater services.

5. Avoid buying at the very top of your approved limit. Getting approved for a loan means the bank thinks you can pay. It does not mean the payment will feel comfortable after taxes and insurance increase in the following years.

A simple way to stay in control after the increase

When you get an escrow analysis letter, do not ignore it. Review the new monthly payment, the shortage amount, and the projected bills. Then adjust your budget appropriately. If your insurance premium increased, shop for new policy estimates with similar coverage levels before renewal, not after. Using these tips, you can avoid any unexpected surprises as a new homeowner.