How to Properly File Form 1098: A Step-By-Step Guide

Jan 07, 2024 By Susan Kelly

Form 1098, also known as the Mortgage Interest Statement, is incredibly important for homeowners, particularly when tax season rolls around. This document plays a crucial role in determining potential tax deductions related to the interest paid on your mortgage throughout a fiscal year. Properly filing Form 1098 can potentially save homeowners a substantial amount of money. This guide takes you through a step-by-step process of correctly filing Form 1098, ensuring you minimize any errors, fully understand the process, and maximize your potential deductions. It's crucial to take this process seriously as it can significantly impact your financial health.

Step 1: Understanding the Details in Form 1098:

Form 1098 is a document that your mortgage company issues to you. It's divided into several boxes, each of which contains specific information. Box 1 states the total amount of mortgage interest you paid during the year. Box 2 displays any points you paid on purchasing your home, provided you meet certain criteria. Box 3 indicates any refund of overpaid interest, while Box 4 contains information about mortgage insurance premiums you paid. It's essential to fully comprehend the data in these boxes as they form the basis for your tax deductions. Understanding what each box represents could potentially save you a significant amount on your tax bill.

Transferring Information to Your Tax Form:

Once you have a thorough understanding of all the data on Form 1098, the next step is to transfer this information onto your tax form. The IRS Form 1040 is typically where this information is entered. It's important to be very accurate in this step to avoid any discrepancies that could lead to issues with the IRS. Remember, the information on Form 1098 is directly linked to potential deductions on your tax return. Therefore, it is crucial to ensure every piece of data is correctly transferred. Always double-check your entries before moving on to the next step.

Step 2: Collating Necessary Information:

While filling out your tax form, gathering all necessary financial data is paramount. This includes any additional documents that illustrate other expenses or deductions related to homeownership, such as your property tax records or receipts for home improvements. If you have refinanced your mortgage during the tax year, ensure you have the correct Form 1098 reflecting this change. Remember, the IRS may require evidence of these expenses, so keeping organized and complete records is essential. Misreporting can lead to penalties or missed deduction opportunities. Always consult with a tax professional if you're unsure about what information to include.

Step 3: Filling out Form 1098's Boxes Correctly:

Filling out the boxes in Form 1098 may seem daunting, but with the right understanding, it's fairly straightforward. Each box corresponds to different aspects of your mortgage payments and other related expenses. Always cross-verify the figures reported in these boxes with your own records, to ensure accuracy. Box 1 should contain the total interest paid on the mortgage during the year. Box 2 will hold the points paid on purchasing the home, if eligible. Any refund of overpaid interest should go into Box 3. Box 4 should contain the mortgage insurance premiums paid. If you've got a refund of the mortgage insurance premium, it goes in Box 5. Box 6 shows points paid on mortgage refinance. Be meticulous while filling in these details, as any error could affect your potential tax deductions. In the case of uncertainties, consult a tax professional for guidance.

Step 4: Verifying the Information for Accuracy:

After completing your Form 1098 and transferring the necessary information onto your tax form, it's crucial to double-check all the details for accuracy. Any errors or discrepancies could lead to issues with the IRS, resulting in penalties or missed deduction opportunities. Take the time to verify all the numbers and data entered, cross-referencing with your own records if needed. It's better to be safe than sorry when it comes to your tax return. If you do happen to find any mistakes, make the necessary corrections immediately and resubmit the form.

Step 5: Submitting the Form 1098 to the IRS:

After all the steps are completed and the information is verified for accuracy, it's time to submit Form 1098 to the IRS. This can be done electronically or through mail, depending on your preference. If you choose to mail, ensure to post it well before the deadline, as the IRS considers the postmarked date as the received date. If you’re filing electronically, follow the IRS guidelines to ensure a successful submission. Remember to keep a copy of the form and all relevant supporting documentation for your record. It is always a good practice to confirm receipt of your documents by the IRS to avoid any potential future issues.

Step 6: Keeping Records and Next Steps After Submission:

Once you have successfully filed Form 1098 with the IRS, it's crucial to keep all records and documentation related to this process. This includes a copy of the form, any supporting documents, and proof of submission. These records may be required for future reference or in case of an audit by the IRS.

It's also essential to understand what happens after submitting Form 1098. The IRS will review your form and verify the information provided. If there are any discrepancies, they may request additional documentation or clarification. In case of an audit, having all relevant records and documentation readily available can help ease the process.


Filing Form 1098 is a critical step in maximizing tax deductions for homeowners. It may seem overwhelming at first, but with the right understanding and attention to detail, it can be a smooth process. Remember to gather all necessary information, transfer it accurately onto your tax form, and verify for accuracy before submitting it to the IRS. Keep a record of all documentation related to this process and respond promptly to any requests from the IRS. By following these steps and staying organized, you can potentially save a significant amount on your tax bill. So, it is essential to be meticulous in this process and seek professional advice if needed. Happy filing!

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