Bad fit tax clients: signs a planning lead will cost you

Bad fit tax clients show up in three ways: planning can't pay for itself, the owner wants a promised savings number, or they're after help with something the IRS has warned about. Spot the signs early, ideally before the meeting, and decline politely.

Some of the clearest warning signs come from the IRS itself. Its 2026 Dirty Dozen list names schemes that promoters push at business owners. An owner who arrives excited about one of them is telling you what kind of engagement they want.

Fit signs: planning can't pay for itself

1. Profit below your floor

Set a profit floor, the point below which a planning fee can't pay for itself, and stick to it. A business clearing too little to make the fee worthwhile will feel the fee as a cost, however good your work is.

2. They only want a return filed

Some owners want compliance and nothing more. That's a fine prep client and a poor planning one. Ask early: "Planning is a paid engagement, separate from your return. Is that what you're looking for?"

3. The decision maker isn't involved

A staff member booking for an owner who hasn't seen the offer, or one partner booking without the other, usually means a second meeting before anything happens. Ask who decides and invite them.

4. They're outside the states you serve

You can't plan well for a state you don't know. Refer them on.

Expectation signs: they want something you can't sell

5. They want a guaranteed savings figure

"How much will you save me?" is a fair question. "I'll only pay if you save me $X" is a different one. Circular 230 section 10.27 defines a contingent fee to include one "based on a percentage of the taxes saved" or that "otherwise depends on the specific result attained," and it counts tax planning and advice as a matter before the IRS (31 CFR 10.27). Outside narrow exceptions, practitioners can't charge that way. An owner who insists on it is shopping for a different kind of firm.

6. They ask about audit odds

"What are the chances they'd even check?" is a warning sign. Circular 230 section 10.37 says that when giving written advice, a practitioner must not take into account the possibility that a return won't be audited or an issue won't be raised on audit (31 CFR 10.37). Planning built on audit odds is planning you can't sign off on.

See if your firm is a fit

Red flags from the IRS 2026 Dirty Dozen

The IRS publishes its Dirty Dozen list each year. Several 2026 entries show up as requests from business owners (IRS, Dirty Dozen 2026).

7. A "tax hack" from social media

Item 4 on the 2026 list is misleading tax advice on social media. The IRS warns that viral "tax hacks" can push taxpayers to file false information or claim credits they don't qualify for. Item 7 is a bogus "self-employment tax credit" promotion. If an owner opens with "I saw a video that says I can...", listen, then check how attached they are to it. Curiosity is fine. Insistence isn't.

8. Big charitable deduction plans built on appraisals

Item 9 covers non-cash charitable contribution schemes, including inflated appraisals of donated property using syndicated conservation easements or art. The IRS says promoters often promise to eliminate or substantially reduce tax liability. An owner who comes to you to "sign off on" one of these has already decided.

9. A history with preparers who wouldn't sign

Item 8 is ghost preparers, who prepare a return but refuse to sign it or include a PTIN. If an owner says their last preparer "didn't put their name on it," ask more. You may be inheriting problems, which is a scope and fee question at best.

10. Information that doesn't hold together

Circular 230 section 10.34(d) lets a practitioner generally rely in good faith on what a client tells them, but says you must make reasonable inquiries if information "appears to be incorrect, inconsistent with an important fact or another factual assumption, or incomplete" (31 CFR 10.34). An owner whose story changes when you ask a follow-up question will cost you more time than you'll bill.

How to decline bad fit tax clients politely

Keep it short and leave the door open. You don't need to explain every reason.

"Thanks for walking me through this. From what you've described, I don't think we're the right firm for this one. If [the business grows / your plans change], I'd be glad to talk again."

For schemes: "That's not something we'd advise on. If you'd like a plan built on the standard rules, I'm happy to talk about that."

Send a short note the same day so there's a record of what you said.

What our marketing has taught us about fit

We run marketing that fills tax firms' calendars with qualified planning meetings, so screening out bad fits is a big part of the work.

  • The firm writes down who counts before anything starts. Business owner and decision maker, the entity type the firm wants, a revenue or profit floor it sets, wants proactive planning during the year, in states the firm serves, and new to the firm.
  • Some owners are screened out by design. Prep-only enquiries, staff booking for an owner who hasn't seen the offer, and businesses outside the US.
  • Every owner is checked before booking against those written criteria.
  • Mismatches get reviewed. If a booked owner didn't match the signed criteria, the firm raises it and it's checked against our qualification notes.

Where to start this week

  1. Write your profit floor and the states you serve at the top of your intake sheet.
  2. Add the guarantee question and the audit-odds question to your list of warning signs.
  3. Read the IRS 2026 Dirty Dozen list once with your team.
  4. Save the two decline scripts above as templates.
  5. Review your last five lost meetings and mark which of the ten signs showed up before you booked.

Questions firm owners ask

What are the red flags of bad fit tax clients? Profit below your floor, wanting only a return filed, a missing decision maker, demanding a guaranteed savings figure, asking about audit odds, enthusiasm for schemes on the IRS Dirty Dozen list, a history with preparers who wouldn't sign, and facts that don't hold together.

Can I guarantee a client a tax savings amount? Circular 230 section 10.27 treats a fee based on a percentage of taxes saved, or on the specific result attained, as a contingent fee, and it applies to tax planning and advice. Outside narrow exceptions, practitioners may not charge contingent fees.

How do I turn down a tax client politely? Thank them, say you don't think you're the right firm for this one, and leave the door open if their situation changes. Send a short note the same day as a record.

What is the IRS Dirty Dozen? An annual IRS list of tax scams. The 2026 list includes misleading tax advice on social media, a bogus self-employment tax credit promotion, ghost preparers and non-cash charitable contribution schemes.

Sources

General information from the official sources listed below, checked 25 Oct 2026. Not tax or legal advice.

If you'd rather have qualified owners booked for you

Financial Sales Insider is a marketing company for US CPA and EA-led tax firms. We fill your calendar with qualified tax planning meetings. Our marketing finds business owners who fit your criteria, qualifies them, and books them with you.

20 qualified tax planning meetings in 90 days, guaranteed.

If you have fewer than 20 qualified meetings after 90 days, we keep booking with no further monthly fee until you reach 20.

A qualified meeting is one where a business owner we've qualified books onto your calendar and shows up.

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Related: Questions to ask before you book · Selling without promising savings · Common objections

Johnny Logan, Founder, Financial Sales Insider.

Financial Sales Insider · Florida · (305) 513-1710