Alaska, Arizona, California, Colorado, Hawaii, Idaho, New Mexico, Nevada, Oregon, Utah, Washington, Wyoming: Internal Revenue Service, P.O. Box 7704, San Francisco, CA 94120-7704.

Supporting documents include sales slips, paid bills, invoices, receipts, deposit slips, and canceled checks. These documents contain the information you need to record in your books. It is important to keep these documents because they support the entries in your books and on your tax return.

A W-2 form from each employer. Other earning and interest statements (1099 and 1099-INT forms) Receipts for charitable donations; mortgage interest; state and local taxes; medical and business expenses; and other tax-deductible expenses if you are itemizing your return.

What is IRS Form Schedule 2? Form 1040 Schedule 2 includes two parts: "Tax" and "Other Taxes." Taxpayers who need to complete this form include: High-income taxpayers who owe alternative minimum tax (AMT) Taxpayers who need to repay a portion of a tax credit for the health insurance marketplace.

Key Takeaways. Have the Social Security numbers and dates of birth for you, your spouse, and your dependents at hand before you start preparing your return. Remember to report all income, including state and local income tax refunds, unemployment benefits, taxable alimony, and gambling winnings.

Staple one copy of each of your W-2 statements to the front of your tax return if you're mailing in a paper copy. Sort them from lowest to highest by using the attachment sequence number if you must file other schedules and statements with your return. You can find this number in the upper right corner of the form.

Income Forms 1099-NEC and 1099-K. Income records to verify amounts not reported on 1099s. Records of all expenses – check registers or credit card statements, and receipts. Business-use asset information (cost, date placed in service, etc.) ... Home office information, if applicable.