Deductible Expenses in Corporate Tax: Complete Guide

If you have a company in Portugal, you know that Corporate Tax (IRC) is one of the biggest tax burdens you have to deal with. What many business owners don't know is that there are numerous expenses that can be deducted, significantly reducing taxable profit and, consequently, the tax to pay.

In this complete guide, we explain everything you need to know about deductible expenses in Corporate Tax in Portugal - what you can deduct, what you can't, and how to make the most of available tax benefits.

What are Deductible Expenses in Corporate Tax?

For Corporate Tax purposes, an expense is deductible when it is related to the company's activity, is essential for obtaining income, and is properly documented with an invoice in the company's name with its tax number.

Simply put: a deductible expense is one that the tax authority accepts as a business cost, reducing the profit on which tax is charged.

General Rules for Tax-Accepted Expenses

Connection to business activity - The expense must be related to the company's activity

Adequate documentation - Every expense must be supported by an invoice with the company's tax number

Correct accounting record - Expenses must be correctly recorded in the company's accounts

What Expenses are Deductible?

1. Personnel Costs

Employee expenses are generally fully deductible: salaries, holiday and Christmas bonuses, Social Security contributions, training costs, and pension plan contributions.

Use our business cost simulator to calculate the real cost of an employee.

2. Rent and Premises

Rent, maintenance, utilities, insurance and adaptation works are deductible.

3. Vehicles and Transport

Vehicle expenses are deductible but with limitations. Passenger vehicles are subject to acquisition cost limits. Fuel, tolls and maintenance are deductible when business-related.

Note: Vehicle expenses are frequently subject to autonomous taxation. Always consult your accountant.

4. Meals and Entertainment

Meal allowances (up to legal limits), entertainment expenses (subject to 10% autonomous taxation), and client gifts (up to 0.5% of turnover) are deductible.

5. Marketing and Communication

All promotional expenses are deductible: advertising, website, social media, promotional material, trade fairs and sponsorships.

6. External Services

Accounting, legal, consulting, cleaning, security and IT services are deductible.

7. Equipment and Depreciation

Deduction is spread over the asset's useful life through depreciation: IT equipment, machinery, furniture, software and tools.

8. Interest and Financial Charges

Bank loan interest, financing commissions, and leasing charges are generally deductible.

9. Insurance

Liability, health (with conditions), equipment and workplace accident insurance are deductible.

10. Training and Development

Professional training expenses are deductible and may benefit from tax enhancement.

What is NOT Deductible?

Fines and penalties from public entities

Corporate Tax itself

Undocumented expenses

Personal expenses of partners/managers

Donations outside the legal patronage regime

Vehicle costs above legal limits

Confidential expenses - taxed at 50%

Autonomous Taxation

Additional rates on certain expenses: entertainment (10%), passenger vehicles (variable rates), undocumented expenses (50%), per diems (5%).

Use our IRC simulator to calculate the impact on your company's tax.

Practical Tips

Always keep all invoices

Ensure invoices are in the company's name

Plan ahead throughout the year

Invest in training and technology

Always consult a certified accountant

Discover available tax benefits for your company.

Frequently Asked Questions

Can I deduct personal phone expenses used for work? Only if the contract is in the company's name.

Are client meals always deductible? Yes, but subject to 10% autonomous taxation.

What about business travel abroad? Yes, if properly documented. Use our per diem simulator to calculate exempt amounts.

Conclusion

Knowing Corporate Tax deduction rules is essential for efficient company management. At Grupo Your, we help businesses of all sizes optimise their tax situation. Contact us to find out how we can help.

This article is for informational purposes and does not replace advice from a certified accountant.

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