Why Every Tax Preparer Needs a Due Diligence Checklist

If you're serious about protecting your tax business, you need a due diligence checklist.

Not just a list you look at occasionally, but a system you consistently use when preparing tax returns.

One of the biggest mistakes tax professionals make is assuming that experience alone will keep them compliant.

You may have prepared hundreds or even thousands of tax returns, but that doesn't mean you can't overlook an important question, document, or detail.

Experience is valuable, but it should never replace a documented process.

What Is a Due Diligence Checklist?

A due diligence checklist is a tool that helps tax professionals consistently review client information, ask appropriate questions, and document the steps taken when preparing tax returns.

For returns involving the Earned Income Tax Credit (EITC), Child Tax Credit (CTC), Additional Child Tax Credit (ACTC), American Opportunity Tax Credit (AOTC), or Head of Household (HOH) filing status, paid preparers must satisfy specific IRS due diligence requirements.

A checklist can help you organize those responsibilities, but it does not replace the required Form 8867 or other applicable IRS requirements.

What Should Your Checklist Include?

Your checklist should help you answer important questions before completing a client's return.

1. Dependent Information

Did you ask enough questions to determine whether the taxpayer can legally claim each dependent?

2. Household Information

Did you verify who lived in the household, how long they lived there, and whether the taxpayer meets the applicable requirements?

3. Financial Support

Did you ask questions about household expenses and financial support when those facts are relevant to the filing status or credit being claimed?

4. Supporting Documentation

Did you review appropriate documentation when needed to establish eligibility or resolve questionable information?

5. Client Interview Notes

Did you document the questions you asked, the client's responses, and any additional explanations needed?

6. Credit Eligibility

Did you verify that the taxpayer meets the requirements for the credits or filing status claimed?

7. Final Review

Did you complete the required due diligence forms, review the return for inconsistencies, and retain the necessary records?

Your Checklist Should Be Part of Your Daily Process

Here's something I want tax professionals to understand.

Due diligence should not begin when you receive an IRS examination letter.

It should begin during the client interview.

Your checklist should become part of your normal workflow, whether you're preparing your first return of the season or your five-hundredth.

When you follow a consistent process, you're less likely to overlook important details.

You also create a clearer record of the steps you took to determine eligibility.

A Checklist Alone Does Not Guarantee Compliance

Having a checklist is important, but simply checking boxes is not enough.

The IRS expects paid preparers to exercise reasonable care, make additional inquiries when information appears incorrect, inconsistent, or incomplete, and maintain required records.

If a client's information raises questions, you must address those concerns rather than simply moving forward because a box was checked.

Your documentation should explain what you asked, what the taxpayer told you, and how you resolved any inconsistencies.

The goal isn't just to complete a checklist. The goal is to demonstrate that you exercised due diligence.

Final Thoughts

Your tax business needs systems that protect both you and your clients.

A consistent due diligence checklist can help improve accuracy, strengthen documentation, and prepare your office for an IRS examination.

Don't wait until the IRS requests your files to discover what's missing.

Build your process now.

Remember: A checklist supports compliance, but your questions, professional judgment, and documentation are what make the process meaningful.

Take Your Due Diligence Knowledge to the Next Level

My 2-Day Due Diligence Masterclass is November 11–12, and I'm inviting you to join me!

November 11–12, 2026 | 8–10 PM EST | Virtual | $157

Don't get so comfortable with your experience that you stop investing in your education.

Register here: Due Diligence Masterclass

Dr. Gwennetta WrightXpert Business Solutions