How Do I Report Interest Income?

Interest income is money you earn when you allow someone else to use your money. Common examples include interest from savings accounts, certificates of deposit (CDs), bonds, money market accounts, and certain lending arrangements. In many countries, interest income is taxable, which means you may need to report it on your tax return.

The exact reporting requirements depend on your country and tax situation. The following overview focuses on U.S. federal income tax rules, where interest income is generally reported on your annual tax return.

What Counts as Interest Income?

Interest income can come from several sources, including:

• Bank and savings accounts

• Certificates of deposit (CDs)

• Money market accounts

• U.S. Treasury securities

• Corporate and municipal bonds

• Loans you make to other people or businesses

• Some insurance and investment products

• Certain accounts that pay interest or interest-like earnings

Even if you don't receive the money directly—for example, because interest is automatically added to your account—it may still be taxable.

Check Your Tax Documents

One of the easiest ways to determine what interest you need to report is to review the tax forms you receive from financial institutions.

Banks and other financial institutions generally issue Form 1099-INT when they pay you at least $10 of interest during the year, although reporting requirements can vary depending on the type of payment.

A Form 1099-INT typically shows:

• Taxable interest

• Tax-exempt interest

• Federal income tax withheld, if applicable

• Certain other interest-related amounts

You should compare the information on your tax forms with your own financial records. If you earned interest but didn't receive a tax form, that doesn't necessarily mean the income is exempt from taxation.

Where Do You Report Interest Income?

For many individual taxpayers, taxable interest is reported on Schedule B (Form 1040), Interest and Ordinary Dividends, when Schedule B is required.

Generally, interest income ultimately flows to Form 1040 and becomes part of your taxable income.

For relatively simple tax situations, you may not need to complete Schedule B. For example, taxpayers with limited interest and dividend income may be able to report the income directly on Form 1040, depending on their circumstances.

Tax software can usually determine which forms and schedules are necessary based on the information you enter.

Taxable vs. Tax-Exempt Interest

Not all interest is treated the same way for federal income tax purposes.

Taxable interest is generally included in your taxable income. Interest from ordinary bank accounts, CDs, and many corporate bonds typically falls into this category.

Tax-exempt interest may receive special treatment. For example, interest from certain municipal bonds may be exempt from federal income tax. However, tax-exempt interest may still need to be reported on your tax return, even though it isn't included in taxable income.

This distinction is important because "not taxable" doesn't always mean "don't report it."

What If You Didn't Receive a 1099-INT?

You are generally responsible for reporting taxable income even if the financial institution doesn't send you a Form 1099-INT.

For example, suppose you earned $25 of interest from a small savings account, but the bank didn't issue a tax form. You should still keep track of the $25 and report it if it is taxable.

Your bank statements, account records, and year-end summaries can help you determine how much interest you received.

What If the 1099-INT Is Wrong?

Mistakes can happen. If a Form 1099-INT contains incorrect information, contact the financial institution that issued it and request a corrected form.

Don't simply ignore a tax form because you believe the amount is incorrect. The IRS may also receive a copy of the form, so discrepancies can potentially trigger questions about your tax return.

Keep documentation showing the correct amount of interest and any communication with the financial institution.

Interest From Multiple Accounts

If you have several bank accounts or investments, you may receive multiple tax forms.

For example, you could receive:

• One Form 1099-INT from your bank

• Another from a brokerage firm

• Additional forms for other investment accounts

Add the relevant amounts together and report them according to the instructions for your tax return.

It's important to avoid both underreporting and double-reporting the same interest.

Interest From Bonds and Investments

Interest earned from bonds can have additional tax considerations.

Interest from many corporate and government bonds is generally taxable. However, some government securities and municipal bonds can receive different treatment.

If you hold bonds through a brokerage account, your brokerage's year-end tax documents can help identify the interest you earned and whether any portion is tax-exempt.

Certain bonds may also have special rules regarding when interest is recognized for tax purposes, so investors with complex bond portfolios may need professional tax advice.

What About Interest Earned Outside the United States?

U.S. taxpayers may also have to report interest earned from foreign bank accounts and investments.

Foreign income reporting can involve additional requirements beyond simply reporting the interest on your income tax return. In some situations, foreign financial accounts may also be subject to separate reporting requirements.

If you earn interest from accounts or investments outside the United States, carefully review the applicable IRS requirements or consult a qualified tax professional.

Keep Good Records

Good recordkeeping makes reporting interest income much easier.

Consider keeping:

• Bank statements

• Form 1099-INT

• Brokerage statements

• Bond records

• CD statements

• Records of foreign interest income

• Documentation of tax-exempt interest

• Records showing any federal tax withheld

Financial institutions often make tax documents available electronically, so check your online accounts if you don't receive a paper copy.

Does Interest Income Affect Your Tax Bill?

Yes. Taxable interest generally increases your income, which can increase the amount of federal income tax you owe.

The tax you pay depends on your overall tax situation, including your filing status, total income, deductions, credits, and applicable tax rates.

For example, earning $1,000 of taxable interest doesn't necessarily mean you owe $1,000 × a particular percentage in tax. Instead, the interest generally becomes part of your overall taxable income, and the applicable tax treatment depends on your circumstances.

What If Tax Was Already Withheld?

Sometimes federal income tax is withheld from interest payments. If this happens, the amount withheld is generally reported on your tax documents.

You should enter the withholding information on your tax return. It can generally be credited against the federal income tax you owe.

Remember that withholding and reporting are different things. Having tax withheld doesn't eliminate the requirement to report the underlying interest income.

Common Mistakes to Avoid

When reporting interest income, several mistakes are relatively easy to make:

Ignoring small amounts.
A small amount of interest can still be taxable even when you don't receive a tax form.

Reporting only the money you withdrew.
Interest can be taxable even when you leave it in the account.

Forgetting old or inactive accounts.
Interest from an account you rarely use may still appear on a tax form.

Double-counting interest.
Be careful when entering information from both a tax form and a financial statement.

Assuming tax-exempt means unreportable.
Some tax-exempt interest still has to be disclosed on your return.

Failing to check your tax forms.
Compare forms from banks and brokers with your own records before filing.

The Bottom Line

Reporting interest income is usually straightforward: identify the interest you earned, review the tax documents provided by your financial institutions, determine which amounts are taxable or tax-exempt, and enter the information on the appropriate tax forms.

For U.S. taxpayers, Form 1099-INT is an important document for identifying interest income, while taxable interest generally flows to Form 1040, with Schedule B required in certain situations.

The rules can become more complicated when you have large investment portfolios, municipal bonds, foreign accounts, unusual financial products, or other specialized sources of interest. In those circumstances, reviewing the IRS instructions or consulting a qualified tax professional can help ensure that your income is reported correctly.