The Top Five Mistakes Tax Pros Are Making with Schedule 1-A

The IRS released the New Schedule 1-A tied to the “no tax on tips, no tax on overtime, car loan interest deduction, and enhanced senior deduction. Yes March 2, 2026 halfway through the filing season.

Whenever Congress creates a new deduction that can be claimed even if the client takes the standard deduction, the real work shifts to us – the tax pros – and more importantly, to payroll systems and reporting.

Here are the top five mistakes we’re already seeing tax professionals (and payroll providers) make.

1. Assuming Payroll Systems Are Calculating Overtime Correctly

Allow me tell you a quick story, you know I do love stories.

My 21-year-old worked overtime at the electronics store, especially during inventory. When he got his W-2, the overtime wasn’t mentioned. Not a slip or anything mentioning his overtime. We went to the last pay stub, and the overtime wasn’t clearly broken out.

So, TaxPro hack – start asking for the last pay stub along with the W-2s you receive from clients.

His Pay Stub was lumped together in a way that made it hard to determine which hours were overtime.  We manually calculated it, and yes, I have to do an amendment now.   So yes – that is the top mistake I learned and number one on this list.

Now, further research using social media users is literally doing the same thing. In some cases, they’re calculating overtime more accurately than the payroll software. It appeared that in August, some software started calculating it correctly, ignoring the first 8 months.

To help you spot these problems faster, ask yourself:

• Does the paystub clearly separate regular pay from overtime pay?
• Is the premium portion of overtime identified and easy to verify?
• Can you trace which amounts qualify for the new deduction without manual recalculation?

If you answer “no” to any of these, it’s time to dig deeper (and charge more for the return).

The Schedule 1-A instructions define “qualified overtime compensation” specifically under Section 7 of the Fair Labor Standards Act – meaning only the premium portion above the regular rate qualifies.

If it’s not broken out properly, you can’t just guess; it requires math.

2. Not Verifying How Tips Are Reported

Tips are messy.

• Are they reported on the W-2?
• Were the shared tips allocated correctly?
• Are tip pools being handled properly?
• Is the occupation actually one that “customarily and regularly receives tips”?

We are already seeing situations where:

• Tips aren’t broken out clearly.
• Shared tips are misallocated.
• Certain tipped workers don’t fall into IRS-defined categories.

And remember – the deduction is capped (up to $25,000) and subject to income phaseouts.

If the reporting isn’t clean, the deduction isn’t defensible.

3. Thinking the Standard Deduction Means “Nothing to Do.”

This is a big mindset shift. Standard deduction does not mean standard effort. In fact, “Standard deduction ≠ standard effort.” Remembering this can help you avoid costly mistakes in the chaos of busy season.

Clients can claim these deductions whether they take the standard deduction or itemize.

That means:

• You still need the data.
• You still need support.
• You still need worksheets.

This is not “set it and forget it.”

Schedule 1-A incorporates a new layer of documentation to what used to be simple W-2 returns.

4. Ignoring Income Phaseouts

Every one of these provisions has income limits.

Instead of just listing phaseouts, try this if-then approach with your returns. The more you guide yourself (or your team) through decision points now, the fewer headaches you’ll have in April.

If you are not modeling Modified Adjusted Gross Income (MAGI) before claiming the full amount, you are inviting notices.

This isn’t about politics. It’s about mechanics.

5. Not Educating Clients Now or With Content – Practice Panda Digital or Newsletters from Tangible Values, Inc.

This is a quiet mistake.

Clients think:

“No tax on overtime” means no tax was withheld.
“No tax on tips” means it’s automatic.

It’s not automatic.

It must be calculated.
It must be reported properly.
It must meet definitions.

If payroll systems don’t break out data clearly, you may be manually reconstructing income.

The best firms reduce confusion by educating clients before tax season arrives. When clients understand what documentation is required and how new tax provisions actually work, it dramatically reduces cleanup work later.

Two effective ways firms are doing this today include:

• Short client updates explaining new rules

• Digital newsletters that highlight tax law changes, deductions, and planning opportunities

Tools like Practice Panda allow firms to quickly deliver targeted educational content to clients when rules change.

Another effective option is using digital newsletters from Tangible Values, Inc. These newsletters allow firms to automatically distribute professional tax updates, explanations of new legislation, and planning tips directly to their clients throughout the year.

Instead of waiting for questions to appear during tax season, firms can proactively keep clients informed and prepared

What This Means for Tax Pros

Schedule 1-A can take time, so don’t forget to bill for it since you will be reviewing systems that are not updated, incorrectly calculating them, and adjusting the deduction for MAGI calculations.

The Tangible Values Take

For 40+ years, Tangible Values has been helping tax pros look good, keep you informed, and file a bunch of returns wrong so you do not have to!

The good news?  My son will never know that I need to amend his return to fix it in May.

And that means trusted tax professionals matter more than ever. Together, we turn complexity into transparency.