Form 1099-INT Filing Requirements for 2026: What Payers Must Know

There are many types of information returns available for different types of payment and Form 1099-INT is a crucial one. It’s used to report interest income. Banks, credit unions, brokerage firms or businesses that pay interest to individuals or entities must meet certain conditions to issue this form.

When you know these 1099-INT filing requirements, protecting your business from steep IRS penalties and notices is pretty easy. That’s not all. It also helps avoid issues with recipients and damage to your reputation.

So, who exactly must file 1099-INT? When is filing required? What’s the reporting threshold? We’ll break it down for you in this blog.

Understanding Form 1099-INT

The main purpose of Form 1099-INT is to report interest payment of $10 or more to account holders in a calendar year to the IRS. The filer is any entity that pays interest. It could be banks, brokerages, credit unions, investment firms and other financial institutions.

You should also file this form if your business paid $2,000 or more in interest as part of a trade or business, withheld and paid any foreign tax on interest or withheld any federal income tax under backup withholding rules and didn’t refund it.

In short, file Form 1099-INT if:

• $10 or more in reportable interest (Boxes 1, 3, or 8)
• $2,000 or more of interest paid in the course of a trade or business

Just remember, while $10 is the standard for financial institutions, $2,000 applies specifically to interest payments made by businesses outside of typical banking.

The recipient must report this interest that’s considered taxable income on their federal income tax return.

Types of Reportable Interest Income

Here are a few examples of interest income that payers must report if they meet the IRS threshold during the calendar year.

• Interest on savings, checking or CD accounts from banks and credit unions
• Interest from bonds, notes, debentures or other debt instruments
• Dividends paid by life insurance companies that are treated as interest income
• Interest from business accounts, escrow arrangements, or trust accounts, including those tied to real estate transactions
• Late‑payment interest on overdue invoices paid by a business in the course of trade or business

Key Boxes on 1099-INT

Form 1099-INT has 17 numbered boxes and they have very specific purposes. But you only need to know the key ones.

• Box 1: Interest income
• Box 2: Early withdrawal penalty
• Box 3: U.S. Savings Bonds & Treasury Obligations
• Box 4: Federal income tax withheld
• Box 6: Foreign tax paid
• Box 7: Foreign country or U.S. possession
• Box 8: Tax-exempt interest

Information You Need to File 1099-INT

Preparation is key to accurate and timely filing. So, before you start filling out the form you must collect these important details. It’ll save you plenty of time and you might not have to worry about corrections later.

Payer information: Your full legal name, address and TIN. This identifies the bank, business, or institution paying the interest

Recipient information: Collect the recipient’s full name, current address and TIN (SSN or EIN) using a completed W-9

Total reportable interest paid: Note the total amount of interest paid to the recipient during the calendar year and make sure it is accurate.

Federal income tax withheld: If there was any backup withholding on the recipient’s interest payments it must be reported regardless of the interest amount.

Foreign tax paid: If any foreign tax was withheld on interest income you must include the amount and the country to which it was paid.

State filing information: If your state requires 1099-INT reporting you will need the state ID, the amount of state tax withheld and any other state-specific details needed for compliance.

Key Deadlines

Mark these dates on your calendar or set up multiple reminders so that you don’t miss these important IRS deadlines for the 2026 tax year.

• IRS eFiling: March 31, 2027
• IRS paper-filing: March 1, 2027
• Recipient copy: February 1, 2027

Note: The IRS mandates eFiling for those with 10 or more information returns in total (1099s + W-2s + 1098s).

Real-World Examples

Here are some examples from real life that you might find useful. These three different instances will help you understand how 1099-INT filing works so that you can handle similar payments without confusion.

1. Say a bank pays a customer $36 in savings account interest in 2026. Should the bank file a 1099-INT? Yes. Because it exceeds the $10 filing threshold.

2. A credit union paying a member $125 in CD interest in a year. Because this payment amount is more than the IRS reporting threshold ($10) it must file Form 1099-INT and send a copy to the recipient.

3. Consider a case in which a payer issues just $8 in reportable interest to an account holder whose TIN is missing. Despite falling below the $10 threshold the payer should still file 1099-INT. Why? Because backup withholding was applied and not refunded.

Conclusion

1099-INT is an interest income reporting form that’s critical for compliance. Banks, financial institutions, businesses and other payers that satisfy the 1099-INT filing requirements must submit this form accurately and on time to prevent audits, notices and penalties from the IRS.

But to file precisely without mistakes payers must first understand the rules. Knowing who must file, what types of interest are reportable, what thresholds and deadlines apply are key. It also means collecting the right information and staying up to date with any IRS updates that may affect your filing obligations.

FAQs

1. When should I file Form 1099-INT?

Generally, you must file this form if you paid $10 or more of reportable interest income (boxes 1, 3, or 8). You should also file 1099-INT if you withheld and paid any foreign tax on interest or if there was any federal backup withholding.

2. What’s the deadline to file 1099-INT?

For the 2026 tax year (filed in 2027), payers must eFile with the IRS by March 31 and paper-file by March 1. The recipient copies are due by February 1.

3. What if I paid interest that’s less than $10?

In this case you must file 1099-INT only if you applied backup withholding without any refund.

4. What happens if I miss the filing deadline?

You’ll attract penalties from the IRS. It starts from $60 per form and escalates to $340 per form depending on how late you file. If it’s considered as intentional disregard you’ll have to pay $680 per form (with no maximum cap).

5. Are corporations exempt from 1099-INT?

Generally, yes. Except when federal or foreign tax has been withheld. Always verify the recipient’s entity type using their W-9.