Posted 07/20/2017

Gina Pogol writes about personal finance, credit, mortgages and real estate. She loves helping consumers understand complex and intimidating topics. She can be reached on Twitter at @GinaPogol.

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How The Mortgage Interest Tax Deduction Lowers Your Payment

mortgage interest tax deduction savings

Gina Pogol

The Mortgage Reports Contributor

Mortgage Deduction Does Not Help Everyone Equally

When you apply for a home loan, mortgage underwriters don't factor in the mortgage interest tax deduction. That's probably because not everyone takes it.

What Mortgage Underwriters Don't Consider When You Apply For A Home Loan (But You Should!)

However, you should consider it, because the tax deduction can have a huge impact on your home's affordability.

Verify your new rate (Nov 23rd, 2017)

How The Mortgage Interest Tax Deduction Works

When you deduct your mortgage interest, you save between ten and almost 40 percent of your interest costs. Note that you don't calculate the deduction from your entire payment, just the interest.

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Because interest costs are higher in the first years of your mortgage, you get to deduct more at first, usually when you need it most.

The chart below shows tax brackets for a married couple filing jointly.

mortgage interest tax deduction

Calculating Your Savings

Here are the steps you'll take to see what your deduction is worth.

First, look at your loan's amortization schedule to see how much interest you'll pay the first year.

3 Cool Things You Can Do With A Mortgage Calculator

Suppose Mr.and Mrs. Hanson buy a house, and that's their amortization schedule below. In Year 1, the Hansons will pay $13,401 in interest.

amortization interest paid

Savings If You Normally Take The Standard Deduction

Before they bought their home, the Hansons always took the standard deduction, which is $12,600 for a married couple filing jointly. Because their home mortgage interest deduction exceeds the standard deduction, they will want to itemize on a Schedule A instead of filing a 1040 EZ.

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In addition, the Hansons can deduct another $2,599 for other items. They would not get to write those things off without the home mortgage interest, because it's that extra $13,401 that makes itemizing a better deal than taking the standard deduction.

So the Hansons can deduct $13,401 + $2,599, or $16,000. If the Hansons earn $100,000 a year, their tax bracket is 25 percent. Their tax savings is $16,000 * .25, or  $4,000.

But Wait, There's More

However, if the Hansons thought they were saving $4,000 a year in taxes  by buying a house, they would be wrong. Before buying a home, they were already deducting $12,600. To determine their true savings, they'd have to subtract the standard deduction.

  • $16,000 - $12,600 = $3,400
  • $3,400 * .25 = $850 per year
  • $850 / 12 = $71 per month.

If the mortgage interest deduction is what allows you to itemize, you have to subtract the standard deduction to get your true savings.

If your mortgage interest plus other deductions don't exceed your standard deduction, you should not deduct your mortgage interest, and should just take the standard deduction. In that case, the mortgage deduction will not save you any money.

(However, if your income is not too high, you may be able to get a tax credit instead.)

When You Itemize Without The Interest Deduction

If you have enough deductions to itemize, even without the mortgage interest, that's a different story. In that case, you simply multiply your mortgage interest by your tax rate.

If the Reynolds family has $15,000 in Schedule A deductions, plus their home interest deduction, and they earn $200,000 a year, they would multiply $13,401 by .28, because they would be in the 28 percent bracket.

  • $13,401 * .28 = $3,752 per year
  • $3,752 / 12 = $313 per month

You can see that the mortgage interest deduction is potentially more helpful to those in higher brackets, and those who already itemize.

How To Put The Money In Your Pocket

Okay, you probably think. It's great that I get this money back at the end of the year, but that's not helping me pay my mortgage right now. 

It's time to grab your latest pay stubs and make friends with this helpful IRS withholding calculator. You'll input your income and withholding amounts, and be sure to add your estimated mortgage interest deduction.

The IRS will tell you how many exemptions to claim on your W-4. By increasing your exemptions, you'll have less tax withheld, and more cash available to make your mortgage payments.

What Are Today's Mortgage Rates?

The more interest you pay, the higher your mortgage interest deduction -- but that's no reason to pay any more than you have to!

You can minimize what you pay for a mortgage by contacting several competing mortgage lenders for quotes, comparing their offers and then choosing your best deal.

Verify your new rate (Nov 23rd, 2017)

 

 

 

Gina Pogol

The Mortgage Reports Contributor

Gina Pogol writes about personal finance, credit, mortgages and real estate. She loves helping consumers understand complex and intimidating topics. She can be reached on Twitter at @GinaPogol.

The information contained on The Mortgage Reports website is for informational purposes only and is not an advertisement for products offered by Full Beaker. The views and opinions expressed herein are those of the author and do not reflect the policy or position of Full Beaker, its officers, parent, or affiliates.

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