Small Business Tax Deductions 2025

(By CPA Evren Özmen)

Introduction

When running a sole proprietorship (or any small business), one of the most common questions is, “Which expenses can I deduct?” Unfortunately, the answer isn’t always straightforward because tax authorities generally require a direct link between the expense and your taxable income. This guide will cover small business tax deductions 2025 and outline the latest limits and practical tips.

Note: The specifics may vary based on your sector, business model, or local regulations. Always confirm with a qualified tax professional for personalized advice.

Fundamental Rules

Must Be Business-Related
- Any expense directly related to running or maintaining your business operations is generally deductible.
Industry-Specific Expenses
- Costs that are unique to your sector are usually allowable, as long as they stay within legal boundaries.
Avoid Personal Expenses
- Be cautious about expenses that serve both business and personal purposes. They may be partly deductible, or not at all, depending on the exact use.
- Purely personal costs cannot be claimed as small business tax deductions 2025.

1. Vehicle Expenses & 2025 Limits

Ownership or Lease Requirement

To deduct vehicle expenses, the car must be registered under the business or covered by a valid lease agreement in the company’s name.

1.1. Leased Vehicles

Monthly Deductible Lease Expense (Excl. VAT): Up to 37,000 TRY for 2025.
Any amount above 37,000 TRY is not tax-deductible.

1.2. Purchased Vehicles

Max. Deductible ÖTV + VAT: Up to 990,000 TRY (for a new car) can be expensed at once.
Overall Cost Limit (New or Used): Expenses above 2,100,000 TRY provide minimal or no tax advantage.
Deduction Percentage: 70% of your car-related costs are accepted as deductible.
- Example: If you spend 1,000 TRY on fuel, only 700 TRY is deductible.

Insurance, Maintenance, Parking, Tolls → 70% deductible.
Fuel/Charging Costs (Gas, LPG, Electricity) → 70% deductible.
- Note: Fuel purchases now require a UTTS (National Accrual Tracking System) device in 2025. Its cost, 2,791.45 TRY, must be depreciated over 2 years (cannot be expensed in one go).
Motor Vehicle Tax (MTV) is not deductible.

2. Stamp Duty on Tax Filings

Your small business will file various returns that incur stamp duty. These amounts qualify as small business tax deductions 2025:

VAT Return Stamp Duty: 443 TRY monthly
Withholding Tax Return Stamp Duty: 525 TRY (monthly or quarterly, depending on your filing cycle)
Provisional Tax Return Stamp Duty: 691 TRY (4 times a year)
Annual Income Tax Return Stamp Duty: 1,438 TRY (once a year)

Collectively, these can approach 10,000 TRY annually, so be sure to forward these payment records to your accountant.

If you run a sole proprietorship, the Bağkur social security contributions you pay monthly are deductible:

2025 Monthly Bağkur Premium: 7,671.38 TRY

Note: For limited or joint-stock companies, shareholders’ Bağkur payments are not considered a company expense.

4. Bank Fees

Account Maintenance Charges
Credit Card Fees (monthly/annual)
Loan Interest Expenses

All such costs related to your business banking activities are deductible.

5. Employee Costs

Salaries, Bonuses, Severance Pay → reduce your taxable income.
2025 Monthly Cost of a Minimum-Wage Employee to the Employer: 30,621.48 TRY
For sole proprietorships, salaries paid to spouse or children are not deductible.
For limited/joint-stock companies, salaries paid to spouse or children can be deducted if genuinely employed and paid through bank transfer.

6. Licenses and Membership Fees

Chamber of Commerce Dues (if your small business is registered there)
Industrial Registration Fees (if applicable)
Industry-Specific Licenses
Mandatory Training Costs for obtaining such licenses

These fall under legitimate small business tax deductions 2025 if they relate to your operation.

7. Consultancy and SaaS

Legal Advice, KOSGEB Consulting, CFO/CTO-as-a-service
Accounting, SEO, or Specialist Services
SaaS (Zoom, Dropbox, Google Workspace, QuickBooks, etc.)

Tip: If SaaS providers are located abroad, additional tax obligations (e.g., reverse charge VAT) may arise. Check with your advisor.

8. Cost of Goods Sold

If you trade goods, ensure you have valid purchase invoices:

No Purchase Cost? → You’ll end up with inflated profits and higher taxes.
Stock Management: Pay attention to timing, currency risk (if you pay in foreign currency), and dependency on a few large customers.

9. Training and Education

Sole Proprietorships (Yourself, Spouse, Children): You may deduct 10% of educational expenses.
Limited/JSC Owners: No personal education deduction.
Employee Training: The cost is added to the payroll and subjected to tax/insurance before being deducted.

Online courses (e.g., Udemy, Coursera) are generally accepted if they’re business-relevant.

10. Depreciation (Amortization)

2025 Depreciation Threshold: 9,900 TRY (excluding VAT).

Below 9,900 TRY: You can expense in one go.
Above 9,900 TRY: You must capitalize and depreciate over time (e.g., 48 months for computer equipment).

10.1. Example (Computer Purchase)

A 9,900 TRY computer can be depreciated 9,900 / 48 monthly.
Accelerated Depreciation is available for balance-sheet-based taxpayers but typically not for simple cash-based sole proprietorships.

11. Rent & Home Office

Separate Office Lease: Fully deductible.
Home Office Setup: 50% of bills (electricity, water, gas, internet, HOA dues) can be written off.
- If you own the home, you may face additional tax (stopaj) implications.
- Get the landlord’s approval before declaring your home as a business address.

12. Food & Meal Expenses

For a sole proprietorship, reasonable expenses for business meals can qualify under the Income Tax Law (Article 40/1).

Client Meetings: Keep receipts and note which client was present.
Office Consumables: Tea, coffee, snacks at the workplace are deductible.

For limited/joint-stock companies, meal expenses are often deductible if genuinely business-related—even if there’s only one shareholder. However, this remains a partially debated area, so document carefully.

13. Office Expenses

These categories rarely cause disputes:

Cleaning, Stationery, E-Invoicing, E-Ledger fees
Computer, Printer, Camera Purchases (mind the depreciation threshold)
Shared Facility Fees (HOA) (a simple bank receipt is usually sufficient)

14. Clothing Expenses

Official Ruling: Formal attire (e.g., suits) isn’t exclusively for business use, so it’s not deductible.

Exception: Uniforms or protective clothing with a company logo or specialized safety gear only used for work.

15. Transportation

Taxi, Rideshare, Public Transit, Airline Tickets → deductible if for business.
Fuel, tolls, etc., for a business-registered or leased vehicle are also deductible.
For limited/joint-stock companies, the car must be in the company’s name or under a lease contract.

Final Words & Key Reminder

By properly classifying small business tax deductions 2025, you can significantly reduce your tax liability. Always ensure the expense has a clear business purpose and maintain robust documentation.

Yes, business-related vehicle, office, training, and consultancy costs can be deducted.
No, purely personal or predominantly personal expenses do not qualify.

Regularly consult with an accounting firm to optimize your deductions and stay compliant with tax regulations.

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Additional Resources

Remote Work Taxes in 2025
Annual Stamp Duties Explained
Ways to Withdraw Money from Your Business
Switching to a Balance Sheet System for Your Sole Proprietorship

Got Questions? Leave a comment or email us for customized tax planning. We’d be happy to help.

Thank you and see you soon!

Small Business Tax Deductions 2025