It is faintly embarrassing how often Miami accounting firms miss deductions on their own returns. CPAs spend the year hunting deductions for clients and run their own books on muscle memory. This page lists the deductions that, in our experience reviewing 2025 small-firm returns, accounting practices in Miami most commonly miss or underuse. None of these are aggressive — they are ordinary deductions that get left out because no one is paying the firm to find them.
Premiums paid by the firm for employees deduct on Schedule C / Form 1120 / Form 1120-S as an ordinary business expense. For S-corp greater-than-2% shareholders, premiums must be added to W-2 wages and then deducted on Schedule 1 of Form 1040 — net deductible to the owner personally. Dental and vision count alongside medical. Long-term-care premiums also qualify subject to age-banded caps.
Both fully deductible as ordinary business expenses. Many Miami firms forget to deduct the prior-year tail coverage they purchased mid-year — that's an immediate deduction in the year paid even if the coverage extends multiple years.
For 2026, Section 179 immediate expensing limit is approximately $1.16M (inflation-adjusted from 2024 figures; verify current figure with IRS). Bonus depreciation is at 40% in 2026 (phasing down from 100% in 2022). Used together, an accounting firm can immediately expense:
CPE costs are fully deductible as ordinary business expenses for the firm. Includes registration fees, course materials, and travel to in-person CPE events. Florida Board of Accountancy renewal fees ($50/year) and AICPA membership dues are deductible. PCAOB registration (for firms auditing public companies) is deductible.
If you operate from home — or have a dedicated home office for after-hours and weekend work — the home office deduction is real and underused. The simplified method allows $5/sqft up to 300 sqft ($1,500/year max). The actual-expense method allocates a percentage of mortgage interest, property tax, utilities, insurance, and depreciation based on the office square footage as a percent of the home. For a 250 sqft office in a 2,500 sqft Coral Gables home, that's 10% of qualifying expenses.
One of the largest available deductions and the one most underused by small Miami CPA firms. Options:
The accumulated annual cost of professional subscriptions surprises most firms once added up:
For a 5-person Miami firm, these typically run $12,000–$22,000/year. All deductible.
Miami office rent is a major deduction. Brickell and Coral Gables CPAs frequently pay $40–$60/sqft. Coworking memberships (Industrious, Regus, WeWork) at $400–$700/month are deductible. Includes parking allocations if charged separately.
For client visits, off-site work, and tax-season errands. The standard mileage rate for 2025 was 70¢/mile (2026 likely similar). For a CPA driving 5,000 business miles annually, that's $3,500. Actual expense method may yield more for higher-end vehicles but requires more recordkeeping. Choose one method and stick with it for the vehicle's life.
Accounting and bookkeeping is a "specified service trade or business" (SSTB). Owners are eligible for the 20% QBI deduction only if taxable income is below the SSTB phase-out — roughly $241K single / $483K MFJ for 2025 (indexed for 2026). Above the phase-out, the QBI deduction phases out completely for SSTBs.
Implication for a Miami solo CPA earning $400K married-filing-jointly: full QBI deduction of $80K. The same CPA at $550K MFJ: zero QBI deduction. The cliff is steep — and tax planning around the threshold (retirement plan contributions, charitable giving, income deferral) routinely saves $15,000–$25,000 in tax annually.
Florida has no individual or pass-through state income tax — a structural advantage Miami accountants leverage but rarely articulate. C-corps pay 5.5% Florida corporate income tax. Property tax is local; sales tax is 7% in Miami-Dade. Net: Florida residency is itself the most valuable "tax strategy" available.
Retirement plan contributions, by a meaningful margin. Even a basic SEP-IRA can shelter 25% of compensation. A defined benefit plan for a high-income partner can shelter $100K–$300K per year. Few other deductions match the dollar magnitude available through retirement planning.
Only if the owner's taxable income is below the SSTB phase-out (~$241K single / $483K MFJ for 2025). Above that, the QBI deduction phases out completely for accounting (an SSTB). Tax planning around the phase-out is high-value.
Yes. Annual subscriptions are an ordinary § 162 business expense. Multi-year licenses may need to be capitalized and amortized but most current tax-prep software is annual-subscription. CCH, Drake, ProConnect, UltraTax — all deductible in the year paid.
No individual or pass-through state income tax. C-corporations pay 5.5% Florida corporate income tax. The lack of personal state income tax is a structural advantage that makes Florida residency itself a tax strategy.
We coordinate health insurance, retirement, and tax-deductible benefit strategies for Miami firms.
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