Tax Preparation Checklist for Individuals and Small Businesses
By Sinvea International
A new job, a growing business or income from a side project can change what you need to prepare for tax season. Starting with an organized checklist makes it easier to have a useful conversation with your tax professional. This guide brings together IRS resources for individuals, freelancers and small business owners in Utah, California and across the United States.
1. Organize income and expense records
Create a secure folder for income documents, business receipts and supporting records. For a business, choose a system that clearly shows income and expenses. Reconcile your books with bank and payment statements, and flag transactions you cannot explain before your preparation appointment.
Records support amounts reported on a return and help businesses track financial activity. Retention periods vary by record and circumstances; avoid applying one disposal deadline to every document. See the IRS recordkeeping guidance.
2. Review withholding after a life or income change
If you receive wages or a pension with federal income tax withholding, the IRS Tax Withholding Estimator can help you review the amount withheld. Gather recent paystubs and relevant income information. Marriage, a new job or a substantial income change makes a review particularly useful.
The estimator has eligibility limits, including for people with nonresident U.S. tax status. Check its instructions before using it. If you decide to adjust withholding, follow the instructions for providing the appropriate form to your employer or pension provider.
3. Check whether estimated payments apply
Freelance work, business income and other earnings without sufficient withholding may require estimated tax payments during the year. Whether you must pay depends on expected tax, withholding, credits and applicable exceptions. Revenue alone does not determine the requirement.
Use the IRS estimated taxes guidance and current Form 1040-ES instructions, or ask a tax professional to review your circumstances. Check federal and state requirements separately. Update your estimate when income changes rather than relying on last year’s figures without review.
4. Choose a preparer and review the return
Before hiring someone, ask about experience with your situation, fees and availability after filing. The IRS provides resources for choosing a tax professional. Review your completed return carefully, ask questions about unfamiliar entries and keep a copy.
Your next step
Set aside time this week to organize documents and list changes in your income, household or business. Bring those questions to your tax professional before filing so you can identify missing information while there is time to gather it.
General educational information, not individualized tax advice. Federal and state rules and personal circumstances can differ. IRS sources reviewed October 27, 2026. Featured image: editorial illustration created for this guide.
