Investment Income and Expenses›2025 Returns›1. Investment Income
General Information
2025 Publ 550 (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States
A few items of general interest are covered here.
Recordkeeping. You should keep a list of the sources and investment income amounts you receive during the year. Also, keep the forms you receive showing your investment income (Form 1099-DIV, Form 1099-INT, Form 1099–OID, etc.) as an important part of your records.
Net investment income tax (NIIT). The NIIT is a 3.8% tax on the lesser of your net investment income or the
| amount of your modified adjus that is over a threshold amount | sted gross income (MAGI) based on your filing status. |
|---|---|
| Filing Status | Threshold Amount |
| Married Filing Jointly or Qualifying Surviving Spouse |
$250,000 |
| Married Filing Separately | $125,000 |
| Single or Head of Household | $200,000 |
See Code section 1411, Form 8960 and the Instructions for Form 8960 for more information.
Tax on unearned income of certain children. Form 8615 must be filed for any child who meets all of the following conditions.
The child has more than $2,700 of unearned income.
The child is required to file a tax return.
The child either:
a. Was under age 18 at the end of 2025,
4 Chapter 1 Investment Income Publication 550 (2025)
of dividends on stock owned by your child, even though the dividends are paid to you as custodian.
Penalty for failure to supply TIN. You may be subject to a penalty if, when required, you fail to:
Include your TIN on any return, statement, or other document;
Give your TIN to another person who must include it on any return, statement, or other document; or
Include the TIN of another person on any return, statement, or other document.
The penalty is $50 for each failure up to a maximum penalty of $100,000 for any calendar year.
This penalty may be abated if you can show that your failure to provide the TIN was due to reasonable cause and not to willful neglect.
If you fail to supply a TIN in the manner required, you also may be subject to backup withholding.
Backup withholding. Your investment income is generally not subject to regular withholding. However, it may be subject to backup withholding to ensure that income tax is collected on the income. The bank, broker, or other payer of interest, OID, dividends, cash patronage dividends, or royalties must withhold income tax on these reportable payments at a rate of 24% under backup withholding.
Backup withholding applies if:
You do not give the payer your TIN in the required manner;
The IRS notifies the payer that you gave an incorrect TIN;
The IRS notifies the payer that you are subject to backup withholding on interest or dividends because you underreported interest or dividends on your income tax return; or
You are required, but fail, to certify that you are not subject to backup withholding for the reason described in (3).
Certification. For new accounts paying interest or dividends, you must certify under penalties of perjury that your TIN is correct and that you are not subject to backup withholding. Your payer will give you a Form W-9, or similar form, to make this certification. If you fail to make this certification, backup withholding may begin immediately on your new account or investment.
Underreported interest and dividends. You will be considered to have underreported your interest and dividends if the IRS has determined for a tax year that:
You failed to include any part of a reportable interest or dividend payment required to be shown on your return, or
You were required to file a return and to include a reportable interest or dividend payment on that return, but you failed to file the return.
How to stop backup withholding due to underre- porting. If you have been notified that you underreported
interest or dividends, you can request a determination from the IRS to prevent backup withholding from starting or to stop backup withholding once it has begun. You must show that at least one of the following situations applies.
No underreporting occurred.
You have a bona fide dispute with the IRS about whether underreporting occurred.
Backup withholding will cause or is causing an undue hardship, and it is unlikely that you will underreport interest and dividends in the future.
You have corrected the underreporting by filing a return if you did not previously file one and by paying all taxes, penalties, and interest due for any underreported interest or dividend payments.
If the IRS determines that backup withholding should stop, it will provide you with a certification and will notify the payers who were sent notices earlier.
How to stop backup withholding due to an incor- rect TIN. If the IRS notifies a payer that your TIN is incorrect, the payer must contact you and ask you to provide your correct TIN. Follow the instructions provided by the payer to prevent or stop backup withholding.
Reporting backup withholding. If backup withholding is deducted from your interest or dividend income or other reportable payment, the bank or other business must give you an information return for the year (for example, a Form 1099-INT) indicating the amount withheld. The information return will show any backup withholding as “Federal income tax withheld.”
Nonresident aliens. Generally, payments made to nonresident aliens are not subject to backup withholding. You can use Form W-8BEN to certify exempt status. However, this does not exempt you from the 30% (or lower treaty) withholding rate that may apply to your investment income. See Pub. 519 for more information on the 30% rate.
Penalties. There are civil and criminal penalties for giving false information to avoid backup withholding. The civil penalty is $500. The criminal penalty, upon conviction, is a fine of up to $1,000, or imprisonment of up to 1 year, or both.
Where to report investment income. Table 1-1 gives an overview of the forms and schedules to use to report some common types of investment income. But see the rest of this publication for detailed information about reporting investment income.
Joint accounts. If two or more persons hold property (such as a savings account, bond, or stock) as joint tenants, tenants by the entirety, or tenants in common, each person's share of any interest or dividends from the property is determined by local law.
Community property states. If you are married and you receive a distribution that is community income, half of the distribution generally is considered to be received by each spouse. If you file separate returns, you must each report
Publication 550 (2025) Chapter 1 Investment Income 5
one-half of any taxable distribution. See Pub. 555 for more information on community income.
If the distribution is not considered community property and you and your spouse file separate returns, each of you must report your separate taxable distributions.
Example. You and your spouse have a joint money market account. Under state law, half the income from the account belongs to you, and half belongs to your spouse. If you file separate returns, you each report half the income.
Income from property given to a child. Property you give as a parent to your child under the Model Gifts of Securities to Minors Act, the Uniform Gifts to Minors Act, or any similar law becomes the child's property.
Income from the property is taxable to the child, except that any part used to satisfy a legal obligation to support the child is taxable to the parent or guardian having that legal obligation.
Savings account with parent as trustee. Interest income from a savings account opened for a minor child, but placed in the name and subject to the order of the parents as trustees, is taxable to the child if, under the law of the state in which the child resides, both of the following are true.
The savings account legally belongs to the child.
The parents are not legally permitted to use any of the funds to support the child.
Table 1-1. Where To Report Common Types of Investment Income See How To Report Interest Income and How To Report Dividend Income for more details.
| Type of Income | If you file Form 1040 or 1040-SR, report on ... |
|---|---|
| Tax-exempt interest | Line 2a (See the instructions there). |
| Taxable interest | Line 2b (See the instructions there). |
| Savings bond interest you will exclude because of higher education expenses |
Schedule B; also use Form 8815. |
| Qualified dividends | Line 3a (See the instructions there). |
| Ordinary dividends | Line 3b (See the instructions there). |
| Capital gain distributions | Line 7a, or, if required, Schedule D, line 13. (See the instructions of Form 1040 or 1040-SR). |
| Section 1250, 1202, or collectibles gain (Form 1099-DIV, box 2b, 2c, or 2d) |
See Form 1099-DIV Instructions for Recipient. |
| Nondividend distributions (Form 1099-DIV, box 3) | Generally not reported. |
| Undistributed capital gains (Form 2439, boxes 1a–1d) | See Form 2439 Instructions for the Shareholder. |
| Gain or loss from sales of stocks or bonds | Line 7a; also use Form 8949, Schedule D, and the Qualified Dividends and Capital Gain Tax Worksheet or the Schedule D Tax Worksheet. |
| Gain or loss from exchanges of like-kind investment property | Line 7a; also use Schedule D, Form 8824, and the Qualified Dividends and Capital Gain Tax Worksheet or the Schedule D Tax Worksheet. |
Accuracy-related penalty. An accuracy-related penalty of 20% can be charged for underpayments of tax due to negligence, disregard of rules and regulations, or substantial understatement of tax. For information on the penalty and any interest that applies, see Penalties in chapter 2.
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