⚠️ Educational only. TaxPlain does not provide tax, legal, or financial advice. Always consult a qualified tax professional about your specific situation.
What this form is
Form 1098 is the Mortgage Interest Statement — a tax document your lender sends you every January showing how much mortgage interest you paid during the previous year. It's not a form you fill out or file yourself. Your lender files it with the IRS and sends you a copy for your records.
Why does it matter? Mortgage interest is one of the most valuable itemized deductions available to homeowners. If you paid significant mortgage interest in the past year and you itemize deductions on your 1040, Form 1098 is the document that unlocks that deduction.
Who receives this form
✓ You'll receive a 1098 if...
You paid $600 or more in mortgage interest during the year on a loan secured by your primary home or a second home. Your lender is required by law to send it.
↑ You may not receive one if...
You paid less than $600 in interest, your loan is from a private individual (not a bank), or your mortgage is on a property that doesn't qualify as a home. You may still be able to deduct the interest — just without the form.
📅 When to expect it
Lenders must send Form 1098 by January 31 each year for the prior tax year. Check your mail and your lender's online portal. If you have multiple mortgages or a home equity loan, you may receive multiple 1098s.
What each box means
Breaking down Form 1098
The form has several boxes — here's what each one actually means in plain English:
Box 1 — Mortgage interest received — The total interest you paid on your mortgage during the year. This is the main number you'll use on your tax return.
Box 2 — Outstanding mortgage principal — Your loan balance as of January 1 of the tax year (or the origination date if it's a new loan). Used to determine if your loan qualifies for the full deduction.
Box 3 — Mortgage origination date — When your loan began. Affects which tax rules apply to your deduction.
Box 4 — Refund of overpaid interest — If your lender refunded any interest you previously overpaid, it shows here. This amount may need to be added back to your income.
Box 5 — Mortgage insurance premiums — Private mortgage insurance (PMI) you paid. May be deductible depending on your income and current tax law.
Box 6 — Points paid on purchase — Mortgage points you paid when taking out the loan. Points on a home purchase are typically fully deductible in the year paid.
Box 7 — Address of property securing the mortgage — Confirms which property the mortgage is for.
Box 8 — Lender's information — Your lender's name, address, and tax ID number.
How to use Form 1098 on your taxes
You only benefit from Form 1098 if you itemize deductions on Schedule A of your 1040 — meaning your total itemized deductions (mortgage interest + state taxes + charitable donations + medical expenses) exceed the standard deduction ($14,600 single / $29,200 married for 2024).
If you itemize, enter the Box 1 amount on Schedule A, Line 8a. If you also paid points (Box 6), those go on Line 8a as well. Your tax software will walk you through this automatically if you enter the 1098 information when prompted.
💡 Standard vs. itemized deduction
Most homeowners assume they should itemize because of mortgage interest — but run the numbers first. If your mortgage interest plus other deductions doesn't exceed the standard deduction, you're better off taking the standard deduction and ignoring the 1098 for deduction purposes. Your tax software will compare both and pick the better option.
Common mistakes to avoid
⚠️ Deducting on the wrong loan
The mortgage interest deduction only applies to loans secured by a qualified home — your primary residence and one second home. Interest on a third property or investment property follows different rules.
⚠️ Ignoring the loan limit
For mortgages taken out after December 15, 2017, you can only deduct interest on up to $750,000 of mortgage debt ($375,000 if married filing separately). Older loans have a $1 million limit.
⚠️ Missing multiple 1098s
If you refinanced during the year, you'll get a 1098 from your old lender and your new lender. Both amounts of interest are deductible — don't forget to include both.
⚠️ Skipping Box 4
If Box 4 shows a refund of overpaid interest, that amount may need to be reported as income if you deducted it in a prior year. Easy to miss and easy to get wrong.
What to do right now
Check your mail and your lender's online portal for your 1098 — it should arrive by January 31. When you sit down to file, enter the Box 1 amount into your tax software when it asks about mortgage interest. The software will determine whether itemizing beats your standard deduction. If you refinanced, have both 1098s ready. If you're unsure whether your loan qualifies or whether itemizing makes sense, a tax professional can run the comparison for you in minutes.
Questions to ask your tax professional
01Should I itemize this year, or is the standard deduction still better even with my mortgage interest?
02I refinanced this year — do I have two 1098s to deal with, and how do I handle both?
03My mortgage balance is over $750,000 — how does the loan limit affect my deduction?
04Can I deduct the mortgage interest on my second home or vacation property?
05I paid PMI this year — is that deductible, and does my income affect eligibility?
06I have a home equity loan — is that interest still deductible after the 2017 tax law changes?
Frequently asked questions
Do I have to file Form 1098 with my tax return?
No. Form 1098 is sent to you for your records — you don't attach it to your return. Your lender already sent a copy to the IRS. You simply use the numbers from the form when filling out Schedule A if you itemize.
What if I never received my Form 1098?
Contact your lender directly — they're required to send it by January 31. Most lenders also make it available in your online account. If your lender isn't required to send one (loans under $600 in interest), check your monthly statements to calculate the total interest paid.
Is home equity loan interest still deductible?
Only if the loan was used to buy, build, or substantially improve the home that secures the loan. Since the 2017 Tax Cuts and Jobs Act, you can no longer deduct home equity interest used for other purposes like paying off credit cards or buying a car.
Can I deduct mortgage interest if I'm not on the loan but I made the payments?
Generally no — you must be legally obligated on the loan and actually make the payments to claim the deduction. There are limited exceptions, such as when a co-owner pays more than their share, so consult a tax professional if your situation is complicated.
What's the difference between Form 1098 and Form 1098-E?
Form 1098 covers mortgage interest on a home loan. Form 1098-E is a completely separate form that reports student loan interest paid during the year. They look similar but serve very different purposes — make sure you're using the right one.