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Business Tax5 min readMar 17, 2026
Business Start-Up Tax Deductions
Starting a new business comes with significant upfront costs. The tax code allows you to deduct many of these costs — if you do it correctly.
Start-Up Business Tax Deductions
What Are Start-Up Costs?
Expenses incurred before your business begins operations:
- Market research
- Advertising before opening
- Training employees
- Travel related to finding a business location
- Professional fees (legal, accounting)
Tax Treatment of Start-Up Costs
- You can deduct up to $5,000 of start-up costs in your first year
- The $5,000 is reduced dollar-for-dollar once start-up costs exceed $50,000
- Remaining costs amortized over 180 months (15 years)
Organizational Costs
Costs to form a corporation or partnership (legal fees, filing fees):
- Deduct up to $5,000 in year one (same rules as start-up costs)
- Excess amortized over 180 months
When Does Business Begin?
Generally when the business is ready and available to accept customers — not when you started planning.
Pre-Opening Expenses That Are NOT Start-Up Costs
- Costs to acquire business assets (capitalized and depreciated)
- Research and development costs (Section 174)
Expenses During the Start-Up Phase
Keep all receipts and carefully distinguish between capital expenses (depreciated) and deductible expenses.
Starting a new business? Set up your accounting and tax strategy correctly from day one.