10 Signs Your CPA Is Costing You Money

Most business owners and real estate investors assume their CPA is doing everything possible to minimize their tax bill. After all, that is what you hired them for. But the reality is that many CPAs focus almost exclusively on compliance, meaning they prepare your returns accurately and file them on time, without ever exploring the proactive strategies that could save you tens of thousands of dollars each year.

The difference between a compliance-focused CPA and a proactive tax strategist is not just a matter of style. It is a matter of dollars. Below are ten warning signs that your current CPA may be costing you real money, and what a strategic approach looks like instead.

1. They Have Never Mentioned Cost Segregation

If you own rental property, commercial real estate, or short-term rentals and your CPA has never brought up cost segregation, that is one of the clearest red flags in tax planning. Cost segregation studies reclassify components of a building (appliances, flooring, cabinetry, landscaping, paving) into shorter depreciation categories of 5, 7, or 15 years instead of the standard 27.5 or 39 years. Combined with bonus depreciation under IRC Section 168(k), this can generate six-figure deductions in the first year of ownership. A CPA who does not raise this topic either does not understand it or does not offer it, and either scenario costs you money.

2. No Entity Restructuring Discussion

Your business entity structure has a direct impact on your tax liability. Many business owners operate as sole proprietors or single-member LLCs when an S-Corporation election could save them thousands in self-employment taxes. Others run multiple businesses through a single entity when separating them could unlock additional deductions and liability protections. If your CPA has never reviewed your entity structure or suggested changes as your income has grown, you are likely overpaying.

3. Retirement Plan Optimization Is Missing

Beyond the standard SEP-IRA or solo 401(k), there are powerful retirement vehicles that most CPAs never discuss. Defined benefit plans can allow deductions of $100,000 to $275,000 per year for high-income business owners. Cash balance plans offer even more flexibility. If your CPA has only ever mentioned a SEP and your income exceeds $300,000, the gap between what you are contributing and what you could be sheltering is likely substantial.

4. They Have Never Suggested Amending Prior Returns

The IRS allows taxpayers to amend returns within three years of the original filing date (or two years from the date of tax payment, whichever is later). Many taxpayers have missed deductions sitting in prior year returns, including unreported depreciation, overlooked business expenses, or strategies that were available but never implemented. A proactive advisor reviews prior returns during onboarding and identifies amendment opportunities. If your CPA has never looked backward, you may have recoverable tax dollars waiting.

5. They Do Not Know About the Short-Term Rental Tax Strategy

The short-term rental loophole under IRC Section 469 is one of the most powerful tools available to real estate investors. When a property has an average rental period of seven days or less and the owner materially participates in the rental activity, the resulting losses are classified as non-passive. That means they can offset W-2 income, business income, and other active income sources. If your CPA has never mentioned this strategy and you own or are considering short-term rentals, that gap in knowledge is costing you directly.

6. No Proactive Planning Meetings

Tax planning should happen throughout the year, not during a rushed conversation in March. A strategic tax advisor schedules quarterly or semi-annual planning sessions to review income projections, adjust estimated payments, time major purchases, and evaluate new strategies before year-end. If the only time you hear from your CPA is when your return is ready to sign, they are operating reactively rather than proactively.

7. They File Extensions Without a Tax Projection

Filing an extension is perfectly legitimate, but filing one without providing a tax projection is a missed opportunity. A good advisor uses the extension period to run projections, model different scenarios, and identify last-minute strategies like retirement contributions or estimated payment adjustments. If your CPA simply files the extension and moves on, you are not getting planning value from that extra time.

8. No Discussion of State Tax Optimization

State taxes vary dramatically, and business owners with flexibility in where they operate or reside can save significant amounts through proper state tax planning. Strategies include establishing nexus in more favorable states, taking advantage of state-specific credits and incentives, or restructuring operations to reduce state tax exposure. If your CPA has never raised state tax optimization, there may be an opportunity you are missing entirely.

9. They Treat Every Year the Same

Your tax situation changes as your income grows, as you acquire new properties or businesses, and as tax law evolves. A CPA who uses the same approach year after year without adjusting for these changes is not serving you well. Major life and business events, including property acquisitions, business sales, new partnerships, and changes in family structure, should all trigger a review of your overall tax strategy. If your returns look essentially identical from one year to the next despite significant changes in your financial life, your CPA is on autopilot.

10. They Cannot Explain Your Effective Tax Rate

If you ask your CPA what your effective tax rate is and they cannot answer clearly, or if your effective rate seems high relative to your income level, that is a problem. A strategic advisor tracks your effective rate over time and works to drive it down using every available tool: entity optimization, depreciation acceleration, retirement contributions, tax credits, and timing strategies. Your effective rate is the scoreboard, and a good advisor watches it closely.

What to Do If You Recognize These Signs

Recognizing these warning signs does not necessarily mean you need to fire your CPA immediately. In some cases, a compliance-focused CPA can continue handling your bookkeeping and return preparation while a tax strategist handles the planning and strategy layer. This two-advisor model is common among high-income business owners and real estate investors who want both accuracy and optimization.

The most important first step is getting a second opinion. A qualified tax strategist will review your prior returns, identify missed opportunities, and provide a clear picture of how much you could be saving. If the savings are significant, the advisory fee pays for itself many times over.

At AE Tax Advisors, we specialize in proactive tax strategy for business owners and real estate investors. We review every client's prior returns, build custom tax plans with projected savings, and implement the strategies that compliance-focused CPAs typically miss. If any of the signs above sound familiar, a discovery call is the fastest way to find out what you are leaving on the table.

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This article is for informational purposes only and does not constitute legal or tax advice. Consult a qualified tax professional regarding your specific circumstances. AE Tax Advisors, 935 Lake Elmo Dr, Suite B, Billings, MT 59105. Phone: (631) 614-5762.

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