Tax Write-Offs for New Accounting Firms: The Complete List
Discover the full list of tax write-offs for new accounting firms, including startup costs, software, home office, and more. Save money legally.
Starting an accounting firm comes with significant upfront costs, but many of those expenses can reduce your tax bill. This guide covers the complete list of tax write-offs available to new accounting firms, with realistic figures and practical steps to claim them.
Startup Costs
You can deduct up to $5,000 in startup costs in your first year of business, with the remaining costs amortized over 180 months. This includes costs incurred before your firm officially opens, such as market research, advertising, training, and legal fees. If your startup costs exceed $50,000, the $5,000 deduction is reduced dollar-for-dollar.
Practical step: Keep all receipts from your pre-launch phase. Work with your tax professional to classify costs correctly and elect to amortize if needed.
Office Space and Utilities
If you lease office space, you can deduct rent, utilities (electricity, water, internet), and property insurance. For home-based firms, the home office deduction applies if you use a dedicated space exclusively for business. The simplified method allows $5 per square foot, up to 300 square feet, for a maximum deduction of $1,500. The regular method requires tracking actual expenses (mortgage interest, utilities, repairs) and calculating the business percentage.
Practical step: Measure your home office space and document its exclusive use. For leased space, keep lease agreements and utility bills.
Equipment and Furniture
Computers, monitors, printers, desks, chairs, and filing cabinets are deductible. Under Section 179, you can deduct the full purchase price in the year you place the equipment in service, up to $1,160,000 for 2026. Bonus depreciation allows an additional 80% deduction on new equipment. Alternatively, you can depreciate over time.
Practical step: Purchase equipment before year-end to maximize current-year deductions. Keep invoices and note the date placed in service.
Software and Subscriptions
Accounting software (QuickBooks, TaxDome, Karbon) and professional subscriptions (AICPA, state CPA society) are fully deductible as business expenses. Cloud-based software is typically deducted as an operating expense. The cost of tax research tools (e.g., CCH, BNA) also qualifies.
Practical step: Track all software subscriptions and annual dues. Use a dedicated business credit card to simplify expense tracking.
Professional Fees and Insurance
Legal fees, accounting fees (for your own tax preparation), and professional liability insurance (errors and omissions) are deductible. Health insurance premiums for you and your employees are also deductible, and you may qualify for the self-employed health insurance deduction.
Practical step: Pay for insurance and professional fees from a business account. Keep records of premium payments.
Marketing and Advertising
Website design and hosting, business cards, brochures, online ads (Google, LinkedIn), and client entertainment (meals with clients are 50% deductible) all qualify. For 2026, the 50% limit on business meals remains in effect.
Practical step: Itemize marketing expenses monthly. Use a separate category in your accounting software.
Employee Costs
Salaries, bonuses, and benefits for employees are deductible, including retirement plan contributions (e.g., SEP IRA, 401(k)). Payroll taxes (Social Security, Medicare, unemployment) are also deductible as business expenses.
Practical step: Set up payroll properly and document all compensation and tax payments.
Continuing Education and Training
CPE courses, conferences, and professional development books are deductible. Travel to conferences (airfare, hotel, 50% meals) also qualifies.
Practical step: Keep registration receipts and travel itineraries. Note the business purpose of each trip.
Vehicle and Travel Expenses
If you use a car for business (visiting clients, running errands), you can deduct either the standard mileage rate (67 cents per mile for 2026) or actual expenses (gas, repairs, insurance, depreciation). Business travel away from home, including lodging and 50% meals, is deductible.
Practical step: Maintain a mileage log with date, purpose, and miles. Use an app like MileIQ to automate tracking.
Retirement Plans
Contributions to a SEP IRA (up to 25% of compensation, max $66,000 for 2026) or a Solo 401(k) (up to $23,000 employee deferral plus employer contributions) are deductible. These plans reduce taxable income and build your retirement savings.
Practical step: Set up a retirement plan before year-end to make contributions for the current tax year.
Miscellaneous Deductions
Other deductible expenses include bank fees, credit card processing fees, postage, office supplies, and business-related phone and internet costs. Bad debts from clients who don’t pay can be deducted if you use the accrual method.
Practical step: Review your bank statements quarterly to identify all deductible fees and charges.
FAQ
Can I deduct the cost of my CPA license renewal? Yes, license renewal fees are deductible as a professional expense.
What if I use my personal car for business? You can deduct business mileage using the standard rate or actual expenses, but you must keep a log.
Are meals with potential clients deductible? Yes, but only 50% of the cost is deductible. Keep receipts and note the business purpose.
Do I need to be profitable to take these deductions? No, but if you have a loss, it may be limited by the hobby loss rules. You must show a profit motive.
The Bottom Line
New accounting firms have a wide range of tax write-offs available, from startup costs to ongoing operational expenses. The key is to keep meticulous records and work with a tax professional to ensure you claim every deduction you’re entitled to. Implement a system for tracking expenses from day one, and review your deductions quarterly to maximize savings. With careful planning, you can significantly reduce your tax liability while building a successful firm.