Form 1098 is the document that summarizes how much mortgage interest (and certain related costs) you paid during the tax year. To use it correctly, you’ll need to understand what each box represents, determine which interest and points are deductible, and accurately report these figures on Schedule A, but only if itemizing your deductions is more beneficial than taking the standard deduction.
Short summary:
- Form 1098, the Mortgage Interest Statement, is an IRS tax form from your mortgage lender that reports the amount of mortgage interest and related expenses you paid during the tax year.
- Form 1098 provides essential information for claiming the mortgage interest deduction, which can significantly lower your taxable income.
- To claim the deduction, you must itemize your deductions on Schedule A (Form 1040) instead of taking the standard deduction.
- Use pdfFiller to manage your Form 1098 and other tax documents with ease, simplifying the process of filling out, signing, and sharing forms securely online.
As a homeowner, you’re likely always looking for ways to manage your finances effectively. One of the most significant financial advantages of owning a home is the ability to deduct the mortgage interest you pay throughout the year.
Form 1098, the Mortgage Interest Statement, is essential for claiming the mortgage interest deduction—a valuable tax benefit that can reduce your tax bill. Knowing how to use the information on this form properly is crucial to maximizing your savings.
What is Form 1098 (mortgage interest statement)?
The IRS Form 1098 is an information return that your mortgage lender sends to both you and the IRS. Its primary purpose is to report the total amount of interest and related expenses you paid on your mortgage over the course of the year. You will typically receive this form by January 31st of the following year.
What information does Form 1098 include?
- Box 1: Shows the total mortgage interest you paid. This is the main number you’ll use for the deduction.
- Box 2: Reports the outstanding mortgage principal at the start of the year.
- Box 4: May show other information, like real estate taxes paid through your escrow account.
- Box 5: Mortgage insurance premiums (if reported). Note: Per IRS Publication 936, the itemized deduction for mortgage insurance premiums has expired for the 2025 tax year.
- Box 6: Details any mortgage points you paid to secure your new loan, which may also be deductible.
- Box 10: Other (may include property taxes, insurance paid from escrow, or other items the lender wants to report).
While Form 1098 focuses on mortgage interest, other forms like Form 1099 cover various income types. Explore our guide to understand the different Form 1099 categories.
A screenshot of the IRS Form 1098, Mortgage Interest Statement, displayed in pdfFiller’s user-friendly editor, ready for precise and secure completion.
How does a 1098 mortgage interest statement affect my taxes?
Your Form 1098 can support an itemized deduction that reduces taxable income, which can lead to tax savings depending on your tax bracket. But mortgage interest is not automatically 100% deductible, and not everyone benefits from itemizing.
The key is that mortgage interest is generally claimed on Schedule A (Itemized Deductions). Schedule A instructions explain that a home mortgage can include first/second mortgages, home equity loans, and refinanced mortgages. However, deductibility depends on how the loan proceeds were used and whether your debt exceeds limits. To learn more about reporting itemized deductions, explore our dedicated article about Form 1040 Schedule A.
How do I claim the mortgage interest deduction?
Use this workflow to follow 1098 instructions accurately.
- Decide whether to itemize. The standard deduction amounts for the 2025 tax year are $31,500 (married filing jointly), $15,750 (single or married filing separately), and $23,625 (head of household). If your itemized deductions are less than your standard deduction, you should probably take the standard deduction instead.
- Gather all mortgage documents for the tax year. Gather all Form 1098s (one for each mortgage) and your closing disclosure or settlement papers if you bought or refinanced. Use these to confirm points paid, interest amounts, and any prepaid interest.
- Confirm the loan is “qualifying debt.” According to IRS guidelines, you can only deduct interest on mortgage funds used to buy, build, or substantially improve your home. If you used part of the loan for personal expenses, the interest on that portion is generally not deductible.
- Check whether any deduction limits apply. If your mortgage is over the $750,000/$1 million limits or you have a special situation (like multiple borrowers or mixed-use property), you may need to use IRS Publication 936 to calculate your deductible interest.
- Enter the right amounts on Schedule A.
- Schedule A, line 8a: Enter deductible mortgage interest and points reported to you on Form 1098 (if not limited).
- Schedule A, line 8b: Use this if you paid deductible mortgage interest but didn’t receive a Form 1098 (for example, certain seller-financed situations).
- If your 1098 shows a refund of overpaid interest, don’t reduce the deduction. Instead, follow the Schedule 1 instructions mentioned in Schedule A.
- Save documentation.
Keep your 1098 mortgage interest statement(s), settlement papers, and any allocation worksheet. This supports your position if questions come up later.
With pdfFiller, you can easily upload your Form 1098 and other tax forms, fill them out electronically, and store them securely in the cloud for further reporting. This helps you easily access your information for tax preparation and keeps all your documents organized in one place.
Update for 2025 mortgage interest deduction limits
For tax year 2025, IRS guidance keeps the key framework most taxpayers use:
- Publication 936 states you can deduct home mortgage interest on the first $750,000 of indebtedness ($375,000 if married filing separately).
- It also confirms a higher $1,000,000 limit ($500,000 if married filing separately) applies for qualifying debt incurred before December 16, 2017 (with a limited binding-contract exception discussed in the publication).
- Schedule A instructions mirror these thresholds and explain that interest is only deductible on qualifying debt (proceeds used to buy/build/substantially improve the home securing the loan).
If your situation doesn’t fit neatly (for example, you have a new loan, a second mortgage, or mixed-use borrowed funds), use Pub. 936’s worksheet approach before you enter numbers on your federal tax return.
Mortgage interest deduction limits ($750k vs $1M grandfathered)
If you took out your mortgage on or before December 15, 2017, your loan is considered “grandfathered debt.” This means you are subject to the older, more generous rules for the home mortgage interest deduction.
Under the old rules, you can deduct the interest on up to $1 million in mortgage debt. This higher limit also applies if you were under a binding written contract to buy a home by December 15, 2017, and closed before April 1, 2018. For married couples filing separately, this limit is $500,000.
Can I deduct mortgage points?
Points (sometimes called discount points or loan origination points) can be deductible, but only under specific conditions.
- IRS Form 1098 instructions say Box 6 reports points paid on the purchase of a principal residence.
- Schedule A instructions note that points shown on your settlement statement are often deductible over the life of the loan, and that points paid for refinancing are generally deducted over the loan term (not all at once).
What to do
- Match Box 6 to your closing documents (Closing Disclosure/HUD-1). 2.
- Confirm whether the points relate to buying your principal residence or refinancing.
- If you’re amortizing points, store your calculation so you can deduct the correct amount each tax year.
What happens when I refinance my mortgage?
Refinancing can change how you handle your mortgage interest deduction because your tax year may include two mortgages:
- The loan you paid off
- The new mortgage replaced it.
If you paid $600 or more in interest on any one mortgage, you will generally receive a Form 1098 (mortgage interest statement) from the mortgage holder or servicer for that mortgage. In a refinance year, that often means more than one Form 1098, and you may need to combine amounts to calculate your total mortgage interest paid for Schedule A.
If your refinance involved points, treat them carefully. IRS Publication 936 explains that points paid to refinance are generally not deductible in full in the year you pay them. Instead, you typically amortize them—deducting a portion each year over the life of the new loan—unless a portion of the refinance proceeds was used to substantially improve your main home and you meet the IRS requirements for that portion.
Example of how to calculate your deduction for points
A simple way to estimate the annual deduction is to spread points across the loan term, but monthly math is usually cleaner. Example:
$3,000 in deductible refinance points on a 30-year loan equals $3,000 ÷ 360 months = $8.33 per month. If you made 9 monthly payments in the tax year after refinancing, your points deduction for that year would be about $75 ($8.33 × 9).
Can I deduct interest on a home equity loan?
Deducting interest on a home equity loan can be tricky.
According to the IRS Publication 936, you generally can’t deduct interest on a loan secured by your home unless you used the money to buy, build, or substantially improve that home. This rule applies regardless of when you took out the loan.
The instructions for Schedule A repeat this rule. The official guidelines advise checking the line 8 box if you didn’t use all proceeds for qualifying debt, because interest tied to other uses isn’t deductible on lines 8a/8b.
What if I have multiple mortgages or a vacation home?
If you have multiple mortgages, the IRS rules are still manageable, but you must apply them consistently.
- Publication 936 defines deductible home mortgage interest as interest on a loan secured by your main or second home.
- Schedule A instructions clarify that if there’s more than one borrower, you can only deduct your share of the interest, even if a single Form 1098 shows the total amount.
If your vacation home is a rental property, the rules are different. Publication 527 explains that you should report the mortgage interest on Schedule E. You’ll need to split expenses between personal and rental use, and you can only deduct the portion related to renting the property.
Standard vs. itemized deduction
Choosing whether to itemize or take the standard deduction is a key part of tax planning. The standard deduction is a fixed dollar amount that you can subtract from your adjusted gross income to reduce your tax bill. This amount depends on your filing status, age, and other factors.
In most cases, itemizing only makes sense if your total itemized deductions are higher than your standard deduction. Your potential itemized deductions may include:
- Home mortgage interest and points (based on Form 1098 and IRS rules)
- State and local taxes (SALT): state/local income (or sales) taxes plus property taxes—generally up to $40,000 ($20,000 if married filing separately) for 2025, with a phase-down for higher incomes (but not below $10,000/$5,000)
- Charitable contributions (subject to IRS limits and documentation requirements)
- Medical and dental expenses that exceed 7.5% of your AGI
Add up your itemized deductions. If they exceed the standard deduction, use Schedule A to claim your mortgage interest deduction.
Disclaimer: This article is general guidance, not tax advice—when in doubt, follow IRS/SSA instructions or consult a tax professional.
Conclusion
Form 1098 is simple when you have one mortgage and no special cases. It gets harder when you add refinancing, points, home equity borrowing, or multiple properties. By understanding the rules for the mortgage interest deduction, you can confidently prepare your tax return.
When it’s time to manage your tax documents, pdfFiller offers a complete and secure solution. You can upload, fill out, and manage all your tax forms, including Form 1098 and Schedule A, from any device.
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FAQ
1. Where do I enter Form 1098 on my tax return?
Most taxpayers enter deductible amounts from Form 1098 on Schedule A (Form 1040), line 8a. If you paid deductible mortgage interest but didn’t get a Form 1098, you can use line 8b and provide the recipient's information. If your mortgage interest deduction is limited, you'll need to use Publication 936 to calculate your deduction before filling out Schedule A.
2. How much mortgage interest can I deduct?
For tax year 2025, you can generally deduct home mortgage interest on up to $750,000 of qualifying debt, or $375,000 if you’re married and filing separately. A higher limit of $1,000,000 ($500,000 if married filing separately) applies to debt incurred before December 16, 2017. If your situation is complex, refer to Publication 936 to calculate your exact deduction.
3. Do I need to itemize deductions for my Form 1098?
Yes, you must itemize deductions on Schedule A to claim the mortgage interest deduction. The IRS explains this in Publication 936. If your standard deduction is higher than your itemized deductions, you should still keep Form 1098 for your records, but it may not change your federal tax return.
4. What if I didn't receive a Form 1098?
Request a corrected statement from your lender if your social security number, property address, or interest paid amount is incorrect. If you paid deductible mortgage interest without a Form 1098, report it on Schedule A, line 8b, and include the recipient details. Publication 936 explains how this interest may still be deductible if reported correctly. Keep records like monthly statements and settlement papers.
5. What’s the difference between 1098 vs 1098-T?
Form 1098 reports home mortgage interest and related expenses, while Form 1098-T reports tuition and qualified education expenses from eligible institutions. Form 1098 covers mortgage interest, and Form 1098-T focuses on tuition, offering different tax benefits and filing in separate tax return sections.
6. What if I have more than one mortgage?
If you have multiple mortgages, you will receive a separate Form 1098 from each lender, as long as you paid them at least $600 in interest. You can add the interest amounts from all your qualifying mortgages together and enter the total on Schedule A. The total mortgage debt across all your properties must fall within the deduction limits.
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