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Tax Strategy guide

When to Hire a CPA

The difference between a CPA, a tax preparer, and an EA — and the moments your business genuinely needs a CPA.

Updated 2026-08-01·6 min read·Reviewed by AG FinTax

"Just use TurboTax" is the right answer for a W-2 and a savings account, and the wrong answer at a very specific point in a business's life. A CPA isn't always necessary — but when the tax picture crosses a threshold, the cost of being wrong dwarfs the fee.

CPA vs. tax preparer vs. EA

Not all tax professionals are the same:

  • CPA — licensed Certified Public Accountant. Fiduciary obligation, education + exam + ethics requirements, authority to represent you before the IRS, and (importantly) business *advice* — entity choice, structure, planning.
  • EA (Enrolled Agent) — federally licensed tax professional focused on tax and IRS representation. Great for returns and disputes; lighter on broader business advice.
  • Tax preparer — unlicensed or lightly credentialed. Fine for simple returns, no fiduciary standard, limited representation rights.

For a business owner, the distinction that matters isn't just "who files your return" — it's who you can trust with a judgment call about structure, deductions, and risk. That's the CPA's lane.

A tax preparer fills out the form. A CPA decides which form, which structure, and which strategy — and stands behind the advice. Once the questions stop being "what goes in box 4" and start being "what structure should I use," you've hit the CPA threshold.

The moments a business needs a CPA

  • You've formed an entity — choosing LLC vs. S-Corp vs. C-Corp and *how* to take money out (salary vs. distributions) has tax consequences that compound every year.
  • Self-employment tax is real — above roughly $60k of profit, the S-Corp election math (see our S-Corp guide and reasonable salary guide) starts to justify itself — and it's a decision to make *with* a professional.
  • Employees or contractors — payroll withholding, 1099s, and the misclassification trap.
  • Multi-state activity — sales in several states, remote workers, or foreign qualification (see our foreign qualification guide) create multiple filing obligations.
  • Inventory, equipment, or real estate — depreciation, COGS, and Section 179 are real money and easy to get wrong.
  • Cross-border or visa-holder status — ITIN filers, non-residents, and visa-holder LLC owners have extra layers (see our visa guides).
  • The IRS notices you — any letter from the IRS deserves professional attention immediately.

What to bring to a first meeting

  • Formation documents — Articles, Operating Agreement, EIN confirmation.
  • 12–24 months of bank statements and books — the messier the better; the point is to give them the full picture.
  • Prior tax returns — especially if you're switching professionals.
  • A list of business expenses — your best guess of categories is fine.
  • Your goals — buy a house? raise money? sell the business? The strategy depends on what you're optimizing for.

The more complete the picture, the more of the hour goes to *planning* instead of *catching up*.

Questions to ask before hiring

  • "Who exactly will work on my account?" — you may meet the CPA and get the junior associate.
  • "Do you work with businesses like mine?" — visa holders, online sellers, S-Corps, multi-state — pick someone who sees your situation regularly.
  • "What's your fee structure?" — flat for the return, hourly for planning? Get it in writing.
  • "Are you comfortable defending your work to the IRS?" — you want representation included, not as an extra surprise.

Common questions

Can't I just use software until I'm bigger? Yes — and you should. The threshold isn't revenue; it's *complexity*. The moment you have an entity, an S-Corp election, employees, or multiple states, you have questions software can't answer.

Will a CPA save me more than they cost? Frequently yes, but not automatically. A good CPA saves money on elections, deductions, and structure choices — and *prevents* mistakes that cost multiples of their fee.

Our tax-planning add-on is a 30-minute CPA session. It's the right first step for deciding whether you need ongoing help — you walk away knowing your structure and your next move.

The bottom line

Hire a CPA when the questions stop being "what goes in this box" and start being "what structure, what salary, what risk." Software handles simple returns; a CPA handles judgment. For most founders, that threshold arrives the day the business becomes worth protecting.

Ready to put this into action?

A real CPA reviews your setup — and we file everything for you.

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This guide is general information, not legal, tax, or accounting advice for your specific situation. State rules and fees change. For decisions that matter, review your plan with a licensed professional — AG FinTax's CPAs are available. See our disclaimer.