Genuine Business Purpose
The nature, purpose and business connection of each expense must be considered.
Tax Guide10-minute read
Business Expenses in Ireland: What Can You Claim?
A practical guide to allowable business expenses, record keeping, motor costs, working from home, travel, equipment and the differences between sole traders and limited companies.
By GA & Co AccountantsPublished 23 June 2026Updated July 2026
Supporting Records
Keep invoices, receipts, mileage logs and calculations supporting the amount claimed.
Correct Tax Treatment
Some costs are immediately deductible, while others may be restricted or treated as capital expenditure.
The Basics
What Is a Business Expense?
A business expense is a cost incurred in carrying on a trade or business. Where the relevant tax conditions are met, the cost may be deducted when calculating taxable business profit.
This is sometimes described informally as a “tax write-off,” but that phrase can be misleading. Spending money does not automatically make a cost deductible, and claiming an expense does not mean Revenue refunds the amount paid.
The expense reduces taxable profit where it qualifies. It does not normally result in reimbursement of the full cost.
Tax Effect
How Do Business Expenses Reduce Tax?
Tax is generally calculated by reference to taxable profit, rather than total sales. Allowable expenses reduce the profit on which tax is calculated.
Business income
€80,000
−
Allowable expenses
€30,000
Profit before other tax adjustments
€50,000
This simplified illustration excludes other tax adjustments, capital allowances, losses, reliefs and personal tax circumstances.
Typical Costs
Common Business Expenses
The expenses incurred will depend on the nature of the business. A consultant, restaurant, online retailer and construction contractor will each have different operating costs.
The following categories are commonly encountered, but each expense must still be reviewed based on its specific purpose and supporting records.
Accountancy and professional fees
Accountancy, bookkeeping and qualifying professional fees incurred for the purposes of the business.
Advertising and marketing
Website costs, digital advertising, printed promotional materials and other qualifying marketing expenditure.
Business insurance
Insurance policies relating to the trade, business premises, professional activities, equipment or employees.
Staff costs
Qualifying wages, employer payroll costs, pension contributions and other genuine employment expenditure.
Telephone and internet
The business proportion of telephone, mobile and internet costs used in carrying on the trade.
Rent and premises costs
Business rent, commercial rates, utilities and other qualifying costs of operating from business premises.
Software and subscriptions
Accounting software, cloud services, industry platforms and qualifying subscriptions used by the business.
Repairs and maintenance
Repairs and maintenance relating to business assets, excluding costs that are capital improvements.
Training and development
Qualifying training that relates directly to the existing trade, employment duties or business activities.
Travel and subsistence
Qualifying business journeys, accommodation and subsistence, subject to the applicable rules and records.
Areas Requiring Care
Expense Claims That Commonly Cause Confusion
Some costs contain both business and personal elements or are subject to separate employee, company or capital-allowance rules.
01
Cars, vans and motor expenses
The tax treatment of motor costs depends on the business structure, the type of vehicle, ownership and the extent of business and private use.
A sole trader who uses a personally owned vehicle for both business and private journeys generally needs to identify and exclude the private-use element of the running costs.
A company may own or lease a vehicle, but private use by a director or employee can create Benefit-in-Kind implications. Alternatively, a company may reimburse qualifying business mileage where Revenue’s conditions are satisfied.
02
Working from home
A self-employed person may be able to claim a reasonable business proportion of relevant household costs where part of the home is genuinely used for the trade.
The calculation should reflect the nature of the cost, the area used for business, the amount of business use and the relevant period. Personal household expenditure should not be treated as a business cost.
Different rules apply to employees and directors working remotely. An employer may make qualifying remote-working payments or the individual may be able to claim Remote Working Relief, subject to the applicable conditions.
03
Training and education
Training expenditure requires careful consideration. Training connected with maintaining or updating existing business skills may be treated differently from education that creates a new qualification, profession or trade.
The treatment may also differ where a company pays for relevant training for an employee or director. The business purpose and the nature of the course should be documented.
04
Travel and subsistence
Travel undertaken wholly for business purposes may qualify, but ordinary travel between home and a normal place of work is generally regarded as commuting rather than business travel.
Employers may reimburse qualifying employee and director travel and subsistence without tax where Revenue’s conditions are satisfied. Records should include the journey, purpose, date, destination and calculation of the amount paid.
Certain untaxed payments relating to travel and subsistence must also be reported to Revenue under Enhanced Reporting Requirements.
05
Clothing
Ordinary clothing is generally personal expenditure, even where it is purchased for work.
Protective clothing, uniforms and specialist items required wholly for the work may be treated differently. The specific nature and purpose of the clothing should be considered.
06
Meals and entertainment
A business meal is not automatically deductible merely because business was discussed.
The treatment depends on who incurred the cost, the business purpose and whether the expense represents travel subsistence, staff welfare, client entertainment or personal consumption.
Business entertainment expenditure may be subject to specific restrictions and should be recorded separately.
Costs to Review Carefully
Restricted or Non-Deductible Expenses
A payment being made from a business bank account does not determine its tax treatment. Personal costs, capital items and specifically restricted expenses may not qualify as ordinary business deductions.
!
Personal or private expenditure
!
Ordinary commuting between home and a normal workplace
!
Drawings or personal withdrawals by a sole trader
!
Dividends paid to company shareholders
!
Corporation Tax or Income Tax liabilities
!
Fines and penalties for breaking the law
!
Ordinary clothing that can also be worn privately
!
Capital assets that must instead be considered for capital allowances
!
Business entertainment where a tax deduction is specifically restricted
!
The private-use proportion of mixed business and personal costs
Mixed business and personal costs should normally be apportioned using a reasonable and supportable method.
Tax Classification
Capital Expenditure Versus Revenue Expenditure
Day-to-day operating costs are generally described as revenue expenditure. Costs incurred to acquire or significantly improve a long-term business asset may instead be capital expenditure.
Revenue expenditure
Day-to-Day Operating Costs
Examples may include rent, software subscriptions, utilities, ordinary repairs and professional fees, provided the relevant conditions are satisfied.
Capital expenditure
Long-Term Assets
Examples may include machinery, equipment, vehicles or major improvements. Capital allowances may be available rather than an immediate deduction.
Evidence
What Records Should You Keep?
Good records support the expense claimed, help prepare accurate tax returns and provide evidence if Revenue reviews the business.
Sales and purchase invoices
Receipts and supplier statements
Business bank and credit-card statements
Mileage logs and journey details
Employment and payroll records
Contracts and subscription agreements
Details of business and private-use calculations
Asset purchase invoices
Expense claim forms
Notes explaining unusual or material transactions
Use a Consistent Expense Process
Capture receipts promptly, reconcile the business bank account regularly and record the business purpose of unusual or mixed-use expenditure.
Business Structure
Sole Trader Versus Limited Company Expenses
The underlying business purpose remains important in both structures, but the accounting treatment and payment process may differ.
Sole trader
The individual and the business are not separate legal persons. Business and private elements must still be identified, and personal drawings are not business expenses.
View Sole Trader ServicesLimited company
The company is legally separate from its director and shareholders. Personally paid business costs should be recorded correctly, often through reimbursement or a director’s loan account.
View Limited Company ServicesCommon Questions
Business Expense FAQs
Do I get the full cost of an expense back from Revenue?
No. Claiming a tax deduction does not normally mean Revenue refunds the full amount spent. An allowable expense reduces taxable business profit. The resulting tax saving depends on the business structure, the applicable tax rate and the tax position of the business.
Can I claim an expense that I paid personally?
A genuine business expense paid personally may generally still be recorded, provided the cost relates to the business and suitable supporting records are retained. For a company, it may be posted to the director’s loan account or reimbursed appropriately.
Can I claim the full cost of equipment immediately?
Not always. Equipment and other capital assets may not qualify as an immediate trading deduction. Capital allowances may instead be available over the relevant period, subject to the applicable rules.
Can I claim travel from home to work?
Ordinary travel from home to a normal or permanent place of work is generally commuting and is not treated as qualifying business travel. Different treatment may apply to genuine business journeys or certain temporary workplaces.
Can I claim part of my home costs?
A self-employed person may be able to claim a reasonable business proportion of qualifying costs where the home is genuinely used for the trade. Employees and directors are subject to separate remote-working rules.
How long should business records be kept?
Businesses should retain complete accounting and tax records for the period required by the relevant legislation. In many Irish tax situations, records are commonly retained for six years, although longer periods may apply in particular circumstances.
Bookkeeping and Tax Support
Make Sure Your Business Expenses Are Recorded Correctly
We help Irish sole traders and limited companies maintain organised records, understand their costs and claim legitimate deductions when preparing their accounts and tax returns.
Continue Reading
More Business Guides
Business Guide
Running a Limited Company in Ireland: Beginner’s Guide
Learn about company formation, Corporation Tax, payroll, VAT, directors and annual compliance.
Read Guide
Business Guide
Running as a Sole Trader in Ireland: Beginner’s Guide
Understand registration, bookkeeping, tax and expenses when operating as a sole trader.
Read GuideGet started with GA & Co
Book a free consultation or get in touch with our team. we'll help you find the right package for your business.
