Your Free Guide to Understanding the 1098 Form

What Is the 1098 Form and Who Receives It?

The 1098 form is a tax document that reports mortgage interest you paid during a calendar year. If you own a home and have a mortgage, your lender sends you this form by January 31st each year. The form shows how much interest you paid on your mortgage loan from January 1st through December 31st of the previous year.

The 1098 comes in several varieties. The most common is the 1098 Mortgage Interest Statement, which reports interest paid on loans used to buy, build, or improve a home. There's also the 1098-T for education expenses, the 1098-SA for health savings accounts, and the 1098-Q for ABLE accounts. This guide focuses primarily on the 1098 Mortgage Interest Statement, though the general principles of understanding and using tax documents apply across these forms.

You receive a 1098 if your mortgage balance was $600 or more at any point during the year and you paid at least $600 in mortgage interest during that tax year. Not every homeowner receives one. If you paid less than $600 in interest or your loan balance never reached $600, your lender won't send a 1098. However, you can still deduct mortgage interest even without this form—you'll need to track it yourself from your loan statements.

Your lender keeps a copy of the 1098 for their records and sends copies to you and to the IRS. The IRS uses the information to verify that the deductions you claim on your tax return match what lenders reported. This is why accuracy matters: discrepancies between your return and the 1098 can trigger IRS inquiries.

Understanding what a 1098 represents helps you recognize its role in your taxes. It's evidence of an expense you may deduct, not a deduction itself. The form simply documents what you paid; you decide whether and how to use that information on your return.

Practical Takeaway: Check your mortgage statements in December and January. If you expect to receive a 1098 but don't by early February, contact your lender to request it or verify your mailing address.

Reading the 1098 Form: Line by Line

The 1098 form contains several numbered boxes, each reporting specific information about your mortgage. Learning what each box means prevents confusion and errors when preparing your taxes.

Box 1a shows the mortgage interest you paid during the year. This is the primary figure used for tax purposes. Box 1b reports "US Savings Bond interest" if applicable—a less common scenario. These two boxes together represent your total mortgage interest paid. For most homeowners, Box 1a is the only relevant figure.

Box 2 lists points paid on the mortgage. Points are upfront fees paid to reduce your interest rate. If you paid points in the year you received the 1098, they may be deductible. Points paid in previous years or future years have different rules, so don't assume all points shown here are currently deductible.

Box 3 shows the outstanding mortgage principal on January 1st of the tax year. Box 4 shows the outstanding principal on December 31st. These numbers help establish that the loan was used for a qualifying purpose (buying a home, not other uses).

Box 5 reports any mortgage insurance premiums you paid. Depending on your income level and when your mortgage originated, you may be able to deduct this amount alongside mortgage interest deductions.

Box 6 lists the address of the property. This confirms which home the mortgage covers. If you own multiple properties, this helps you match the correct 1098 to each property.

Boxes 7 and 8 are technical fields about refunds of overpaid interest—uncommon situations that apply only if you prepaid interest and later received a refund.

The form lists your name, address, and taxpayer identification number (usually your Social Security number) so the IRS can match the document to your tax return. Verify this information is correct; errors here can cause mismatches.

Practical Takeaway: Create a simple spreadsheet with the key figures from your 1098: Box 1a (interest paid), Box 2 (points), Box 5 (insurance premiums), and Box 3 and 4 (loan balances). This organized reference prevents transcription errors when filing taxes.

Common Errors on the 1098 Form and How to Address Them

Mistakes on 1098 forms happen regularly. Lenders process thousands of documents annually, and data entry errors occur. Recognizing common problems and knowing how to address them protects your tax filing.

One frequent error involves incorrect dollar amounts. You might notice the interest shown on your 1098 doesn't match what you calculated from your monthly statements. Add up your 12 monthly statements. If the total differs from Box 1a, the lender may have made a mistake. Discrepancies sometimes arise from timing—if you made a payment on January 1st that covered December interest, it might appear on a different form than expected.

Another issue involves wrong taxpayer information. Your name, address, or Social Security number might be misspelled or incorrect. These errors cause problems because the IRS won't match the document to your return if the identifying information doesn't align. If your name or address changed during the year, the lender might use outdated information.

Duplicate 1098 forms represent another common problem. You might receive multiple copies of the same form. This sometimes happens when a loan is transferred between servicing companies midway through the year. Each servicer may issue a 1098 for the period they held the loan. When this occurs, you typically include only the amounts that apply to your situation—combined interest and points from all 1098s, not duplicated figures.

Some homeowners receive a 1098 when they expected not to, or vice versa. If you paid less than $600 in interest but received a form, the lender may have made an error. If you paid more than $600 but received nothing, the lender may have failed to send it or used your old address.

To address errors, contact your lender's customer service or loss mitigation department. Explain the discrepancy and request a corrected form, called an amended 1098. The lender will issue a corrected document labeled as such, which you include with your tax return instead of the original.

If you can't resolve an error with the lender, document your efforts and file your return using the correct information from your own records. The IRS understands that borrowers' records are sometimes more accurate than lender documents, especially when you have clear evidence like bank statements showing payments made.

Practical Takeaway: Before accepting the 1098 figures as final, compare Box 1a to the sum of monthly interest from your loan statements. If they don't match, contact your lender immediately to clarify whether the difference is an error or a timing issue.

Using the 1098 for Tax Deductions

The primary purpose of the 1098 is to support your mortgage interest deduction. However, not all homeowners benefit from this deduction, and understanding when and how it applies is crucial.

Mortgage interest becomes deductible only if you itemize deductions on your tax return. Most people use the standard deduction, a single fixed amount that simplifies taxes. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. If your total itemized deductions—including mortgage interest, property taxes, charitable contributions, and medical expenses—exceed the standard deduction, itemizing saves you money. Otherwise, taking the standard deduction is more beneficial.

The Tax Cuts and Jobs Act of 2017 limited mortgage interest deduction to the first $750,000 of mortgage principal (or $375,000 if married filing separately). If you took out your mortgage before December 15, 2017, the limit is $1,000,000. This means only interest paid on loans up to these amounts is deductible. For most homeowners with typical mortgages, this cap doesn't affect them, but those with jumbo mortgages should note it.

Your mortgage must also be used to buy, build,