Why Schedule 1 Exists
Form 1040 has lines for the most common types of income: wages, interest, dividends, pension and IRA distributions, Social Security benefits and capital gains. Any other income goes on Schedule 1. You attach it to Form 1040, and it also works with Forms 1040-SR and 1040-NR.
The Schedule 1 form has two parts. Part I adds income, and Part II subtracts adjustments.
Part I: Additional Income
What Goes in Part I
Part I covers lines 1–10.
| Income type | What it includes |
|---|---|
| State and local tax refunds | Taxable refunds, credits or offsets of state or local income taxes |
| Alimony received | Payments under divorce or separation agreements made before 2019 |
| Business income or loss | Net profit or loss from Schedule C |
| Other gains or losses | Sales of business property, reported on Form 4797 |
| Rental real estate, royalties, partnerships, S corps and trusts | Reported on Schedule E |
| Farm income | Reported on Schedule F |
| Unemployment compensation | Unemployment benefits you received |
| Other income (line 8) | Gambling winnings, jury duty pay, prizes and awards, hobby income, canceled debt, etc. |
How Part I Flows to Form 1040
The line 10 total moves to line 8 of Form 1040. If you run a side business, your Schedule C profit lands here. That includes any cash income you earn from your side business.
Part II: Adjustments to Income
What Adjustments Do
Part II covers lines 11–26. These are often called “above-the-line” deductions because they reduce your adjusted gross income (AGI). AGI is your total income minus these adjustments.
The line 26 total moves to line 10 of Form 1040. You can claim these adjustments even if you take the standard deduction.
Common Adjustments
| Adjustment | Who it’s for |
|---|---|
| Educator expenses | Eligible educators |
| HSA deduction | Health savings account contributors |
| Half of self-employment tax | Self-employed people |
| SEP, SIMPLE and qualified plans | Self-employed people saving for retirement |
| Self-employed health insurance | Self-employed people paying for their own coverage |
| Penalty on early withdrawal of savings | Savers charged an early withdrawal penalty |
| Alimony paid | Payers under agreements made before 2019 |
| IRA deduction | People with deductible IRA contributions |
| Student loan interest | Borrowers who paid qualified student loan interest |
Self-Employment Tax and Student Loan Interest
If your net self-employment earnings are $400 or more, you owe self-employment tax and figure it on Schedule SE. You can then deduct half of it on Schedule 1.
The student loan interest deduction lets you subtract up to $2,500 of interest. You can check the eligibility rules in IRS Topic No. 456.
Do You Need to File Schedule 1?
You only file Schedule 1 if you have at least one item from Part I or Part II.
Say you’re a W-2 employee, meaning your employer reports your wages on Form W-2. Your only extra item is student loan interest you paid. You’d file Schedule 1 just to claim that adjustment in Part II.
Schedule 1 is due with your return, typically April 15. If you file Form 4868 for an extension, it’s due October 15. The Form 1040 instructions walk through each line.
Schedule 1 vs. Schedule 1-A
Schedule 1-A, titled “Additional Deductions,” is a separate, newer form. It covers deductions created by the Working Families Tax Cuts, including qualified tips, overtime, car loan interest and an enhanced senior deduction.
Schedule 1 handles extra income and adjustments, while Schedule 1-A handles these newer deductions.
