Updated October 24, 2026. Quick answer: The IRS publishes numbered tax topics, and this page lists 44 of them by number: topics 154 to 161 on IRS procedures, topics 301 to 313 on general filing and tax account rules, topics 401 to 430 on types of income and topics 451 to 458 on adjustments to income. Each links to a page that follows the IRS wording.
Tax topics by number
The IRS tax topics index opens with “These tax topics contain general individual and business tax information.” It sorts the topics under headings such as IRS procedures, General information, Types of income and Adjustments to income. This page lists the topics we have written up, with the IRS topic name and a link to our page for each one.
IRS procedures
| Topic number | IRS topic name |
|---|---|
| Topic 154 | Form W-2 and Form 1099-R (what to do if incorrect or not received) |
| Topic 155 | Obtaining forms and publications |
| Topic 156 | How to get a transcript or copy of your tax return |
| Topic 157 | Change your address, How to notify the IRS |
| Topic 158 | Paying your taxes and ensuring proper credit of payments |
| Topic 159 | How to get a wage and income transcript or copy of Form W-2 |
| Topic 161 | Returning an erroneous refund, Paper check or direct deposit |
General information
| Topic number | IRS topic name |
|---|---|
| Topic 301 | When, how and where to file |
| Topic 303 | Checklist of common errors when preparing your tax return |
| Topic 304 | Extensions of time to file your tax return |
| Topic 305 | Recordkeeping |
| Topic 306 | Penalty for underpayment of estimated tax |
| Topic 307 | Backup withholding |
| Topic 308 | Amended returns |
| Topic 309 | Roth IRA contributions |
| Topic 310 | Coverdell education savings accounts |
| Topic 311 | Power of attorney information |
| Topic 312 | Disclosure authorizations |
| Topic 313 | Qualified tuition programs (QTPs) |
Types of income
| Topic number | IRS topic name |
|---|---|
| Topic 401 | Wages and salaries |
| Topic 403 | Interest received |
| Topic 404 | Dividends and other corporate distributions |
| Topic 409 | Capital gains and losses |
| Topic 410 | Pensions and annuities |
| Topic 411 | Pensions, The general rule and the simplified method |
| Topic 412 | Lump-sum distributions |
| Topic 413 | Rollovers from retirement plans |
| Topic 414 | Rental income and expenses |
| Topic 415 | Renting residential and vacation property |
| Topic 418 | Unemployment compensation |
| Topic 419 | Gambling income and losses |
| Topic 420 | Bartering income |
| Topic 421 | Scholarships, fellowship grants, and other grants |
| Topic 423 | Social Security and equivalent Railroad Retirement benefits |
| Topic 424 | 401(k) plans |
| Topic 425 | Passive activities, Losses and credits |
| Topic 427 | Stock options |
| Topic 429 | Traders in securities (information for Form 1040 or 1040-SR filers) |
| Topic 430 | Receipt of stock in a demutualization |
Adjustments to income
| Topic number | IRS topic name |
|---|---|
| Topic 451 | Individual retirement arrangements (IRAs) |
| Topic 452 | Alimony and separate maintenance |
| Topic 455 | Moving expenses for members of the Armed Forces and the Intelligence Community |
| Topic 456 | Student loan interest deduction |
| Topic 458 | Educator expense deduction |
How to use this list
Each page below walks through one numbered topic using the IRS wording, with the quick reference first and the IRS source linked at the bottom. If your question is about a form line or a worksheet, the form pages on this site cover those: Form 1040 line by line, Form 1040-X and Form 4506-T.
The topic pages are general information, not tax or legal advice. The IRS topic and the instructions for your own form control.
Related: Form 1040 line by line, Form 1040-X, and Form 4506-T.
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Answer againSources
- IRS, Tax topics index (irs.gov): https://www.irs.gov/taxtopics
- IRS, Topic no. 301, When, how and where to file (irs.gov): https://www.irs.gov/taxtopics/tc301
Read from the IRS pages linked above on October 24, 2026. General information, not tax or legal advice. The IRS topic page and the instructions for your own form control, and your own facts decide the outcome.