The Audit Red Flags We Actually See in Cincinnati Returns
Not the internet's list — the patterns we've watched trigger real audits over the last decade.
The internet is full of "top 10 audit triggers" lists, most of which are recycled from a 2011 blog post. After 35 years of preparing returns and handling IRS correspondence for Cincinnati clients, here's what actually gets returns pulled in 2026.
1. Round numbers everywhere
$5,000 in office supplies. $10,000 in meals. $2,000 in mileage. Real expenses aren't round. When every deduction on a Schedule C ends in three zeros, the IRS matching software notices. Keep the receipts and use the real amounts.
2. Schedule C losses year after year
The IRS gives a business a few years to turn a profit. But five straight years of losses on a side business — especially one that looks like a hobby (photography, horses, direct sales, restoring cars) — is one of the clearest audit triggers we see. The "hobby loss" reclassification wipes out every deduction retroactively.
3. Home office claimed as 100% business use
Unless you literally never set foot in that room outside work hours, 100% business use is almost never accurate — and it's easy to disprove. The simplified method ($5/sq ft, up to 300 sq ft) or an honest percentage is safer and almost always enough.
4. High income + high charitable deductions
The IRS publishes DIF scores by income bracket. If you make $200K and deduct $60K in cash charity, you're well above the norm and worth a look. Legitimate giving is fine — just keep the substantiation letters for anything over $250, and get a written appraisal for non-cash gifts above $5,000.
5. Unreported 1099 income
The single most common CP2000 we handle. Every 1099 the IRS receives goes into a matching system. Miss one — even by accident — and you'll get a notice 12–18 months later. This is the easiest thing to prevent: request a wage & income transcript before filing, or have us do it for you.
6. Cryptocurrency "forgot to report"
The 1040 asks about digital assets on page 1 for a reason. Coinbase, Kraken and Gemini all send 1099s now, and every transaction is a taxable event. This is the fastest-growing category of notice we're seeing in Cincinnati.
7. Cash-heavy businesses with thin deposits
Restaurants, salons, laundromats, contractors — anyone whose books show far less bank deposits than reasonable cash flow would suggest. The IRS uses BLS wage data and industry norms as a benchmark. If your reported income looks low for your industry and neighborhood, you're on the list.
If your return already got pulled
Don't respond alone. Audit representation is one of the core things we do — from correspondence audits to full field examinations. First meeting is free, and we'll tell you honestly whether it's a defend-and-close or a negotiate-and-settle situation.
