Many self-employed workers and small companies in Spain believe that an expense is automatically deductible just because they have an invoice or because they paid it with a business card.
However, in a tax review, the Spanish Tax Agency may go further.
Hacienda may ask not only for the invoice, but also for evidence showing that the expense is actually connected to the business activity, properly recorded in the accounts or tax books, allocated to the correct tax year and reasonably linked to the income obtained or to the work carried out.
This is important for any business, but it is especially relevant for professionals with many commercial expenses, client meetings or travel costs: real estate agents, sales representatives, consultants, service providers, professionals who visit clients, businesses using online advertising or self-employed workers dealing with international clients.
At Asesoría Orihuela Costa we often see situations where Hacienda does not simply ask whether an invoice exists. The real question is usually different: why was the expense incurred, which client was it related to, what business operation justified it and what additional evidence can prove it?
The key idea is simple: to deduct an expense, it is not enough to keep the invoice. You must be able to defend it.
What conditions must a deductible expense meet in Spain?
For a business expense to be deductible in Spain, several conditions should normally be met.
The expense must be linked to the economic activity. In other words, it must be a cost that belongs to the business or professional activity carried out by the taxpayer.
There must be a reasonable connection with income. This does not mean that every expense must generate immediate income, but it must be possible to explain that the expense was incurred to run the business, attract clients, provide services, sell products, maintain the business structure or generate future income.
The expense must be real and effective. A simple accounting entry is not enough if there is no real transaction behind it.
The expense must be supported by an invoice, simplified invoice or valid supporting document.
It must be recorded correctly in the accounts or in the compulsory tax records.
It must be allocated to the correct tax year, normally according to the accrual principle.
It must not be an expense expressly considered non-deductible, such as penalties, fines, surcharges or non-accepted gifts and donations.
So the right question is not only: “Do I have an invoice?”
The right question is: “Can I prove that this expense really belongs to my business activity?”
An invoice is important, but it may not be enough
The invoice is still the main document to justify a business expense. But in many cases it is not enough on its own.
An invoice may prove that a transaction exists, but it does not always prove that the transaction is related to the business activity.
This happens especially with expenses that may also have a private or personal element, such as meals, travel, hotels, mobile phones, vehicles, fuel, purchases in large stores, training, digital tools or representation expenses.
For example, a restaurant invoice may be formally correct, but Hacienda may ask who attended the meal, which client or supplier was present, what was discussed and why the meeting was necessary for the business.
A hotel invoice may exist, but you may still need to explain the professional reason for the trip, the client visited, the work performed or the meeting attended.
A phone invoice may be in the name of the self-employed person, but if the phone can also be used privately, it is advisable to keep evidence of professional use: website, business cards, WhatsApp Business, client communications, advertisements or professional tools.
This is why it is so important to keep additional evidence, not only invoices.
Why the description on the invoice matters
One of the most important details is often overlooked: the description of the service or product on the invoice.
Invoices with vague descriptions can create problems. Expressions such as “services”, “work carried out”, “various items”, “management”, “material”, “meal”, “consultancy” or “travel” may be too generic if they do not explain what was purchased or what service was provided.
The description should be as clear as possible and should help connect the expense with the business activity.
For example, “advertising campaign to promote properties for sale” is better than simply “advertising”.
“Professional photographs of a property for sale in Torrevieja” is better than “photography services”.
“Advertising signs for properties for sale” is better than “material”.
“Professional training in real estate digital marketing” is better than “online course”.
“Maintenance of corporate website” is better than “IT services”.
A clear invoice description can make the difference between an expense that is easy to defend and an expense that may be rejected.
Invoice, payment, accounting record and business evidence
To defend a deductible expense before Hacienda, it is useful to think in four levels of proof.
The first level is the invoice or supporting document. It should correctly identify the supplier, the customer, the date, the invoice number, the description of the operation, the taxable base, VAT and the total amount, when applicable.
The second level is the payment. It is advisable to keep the bank statement, card payment or transfer receipt. Cash payments are harder to defend, especially if the document does not identify the business or self-employed person.
The third level is the accounting record or tax book. An expense that has not been properly recorded may be rejected even if an invoice exists.
The fourth level is the evidence linking the expense to the business activity. This may include emails, WhatsApp messages, calendar appointments, contracts, quotes, visit sheets, advertisements, screenshots, photographs, reports or any document that explains why the expense was professional.
The invoice is the starting point. The full evidence is what makes the expense stronger.
Tickets, simplified invoices and cash payments
Tickets or simplified invoices may be valid in some cases, but they usually have less evidential value than a complete invoice, especially when they do not identify the recipient of the expense.
The main problem with a ticket is that it often does not prove who actually paid the expense or whether the expense was incurred for the benefit of the business.
This is even more delicate when the expense is paid in cash.
If a restaurant ticket, parking ticket, fuel receipt or small purchase is paid in cash and does not identify the business, it may be difficult to prove that the expense belongs to the activity.
Whenever possible, we recommend:
- Requesting a complete invoice in the name of the self-employed person or company.
- Avoiding cash payments.
- Paying by card, bank transfer or business bank account.
- Keeping proof of payment.
- Writing down the professional reason for the expense.
Keeping any additional evidence that connects the expense with the activity.
What evidence should you keep besides the invoice?
Additional documentation is essential when defending expenses in a tax review.
Depending on the type of expense, it may be useful to keep:
- Emails with clients or suppliers.
- Professional WhatsApp messages.
- Calendar appointments.
- Quotes.
- Contracts.
- Service orders.
- Property visit sheets.
- Reservations.
- Flight, train, parking or toll documents.
- Screenshots of advertising campaigns.
- Published advertisements.
- Photographs of the work performed.
- Reports.
- Locations.
- Work records.
- Digital platform documentation.
- Bank payment evidence.
- Any document that explains why the expense was incurred.
The idea is simple: if Hacienda asks for explanations two or three years later, the business should be able to reconstruct the story of the expense.
It is not only about showing an invoice. It is about being able to say: this expense was incurred for this reason, for this client, on this date, within this project or for this professional purpose.
Meals, restaurants and client entertainment
Meals and restaurant expenses are among the most frequently reviewed costs.
There may be genuine business meals and client or supplier entertainment expenses connected with the activity. But Hacienda often analyses these expenses carefully because they can be confused with private consumption.
If you want to deduct a meal or client entertainment expense, you should keep:
- A complete invoice, not only a ticket.
- Proof of payment by card or bank.
- Name of the client, supplier or person attending.
- Reason for the meeting.
- Connection with a project, quote, service or business operation.
- Email, WhatsApp or calendar appointment proving the meeting, if possible.
It is not advisable to keep only a restaurant invoice with no explanation. Ideally, the business reason should be recorded on the same day, even in a simple internal note or calendar entry.
Travel, hotels, parking, tolls and business trips
Travel and business trips also require clear evidence.
It is not enough to keep flight tickets, hotel invoices or parking receipts. The professional reason for the trip must be clear.
It is advisable to keep:
- Client or supplier visited.
- Address or place of the meeting.
- Travel agenda.
- Emails or messages coordinating the trip.
- Quote, contract or business operation connected to the trip.
- Tickets.
- Invoices.
- Proof of payment.
- Any document showing that the trip was not private.
For professionals dealing with international clients, as is common on the Costa Blanca, travel may be a normal part of the business activity. But it must still be properly documented.
Advertising, social media and digital tools
Expenses related to advertising, social media campaigns, websites, digital tools, professional platforms, photography, videos or online subscriptions may be deductible if they are connected to the business.
But again, the invoice may not be enough.
It is advisable to keep screenshots of:
Advertising campaigns.
Published ads.
Campaign statistics.
Products or services promoted.
Properties promoted, in the case of real estate agents.
Leads or clients generated.
Professional profiles.
Website pages.
Social media accounts.
Commercial material used.
This is especially important when the supplier is an international platform such as Meta, Google, real estate portals, document management tools or online applications.
In these cases, the invoice or document issued by the platform may not always follow the traditional Spanish format. Additional evidence can help prove the professional use of the expense.
Phone, computer, vehicle and mixed-use expenses
Some expenses may have both business and private use. For example:
Mobile phone.
Computer.
Tablet.
Vehicle.
Fuel.
Internet.
Digital tools.
Camera.
Certain utilities or supplies.
In these cases, you must be especially careful. Hacienda may require stronger proof that the expense is used for the business.
For a professional phone, it is useful if the number appears on the website, business cards, social media, WhatsApp Business, advertisements, signs or commercial documents.
For computers, tablets or mobile devices, it is advisable to prove that they are used to manage clients, issue invoices, access professional platforms, reply to emails, take photographs, prepare quotes or perform business tasks.
Vehicles are particularly delicate for self-employed workers in Spain. For expenses related to a passenger car, Hacienda usually requires very strong proof of business use. If there is private use, deductibility may be challenged.
For this reason, it is advisable to keep a travel diary, clients visited, kilometres, reason for the journey, locations, parking receipts, toll receipts, repair invoices and any evidence supporting professional use.
Special attention for real estate agents
Real estate agents should pay particular attention to how they justify their expenses.
Their activity often involves advertising, travel, property visits, phone use, WhatsApp, social media, signs, professional photography, videos, client meetings, business meals, trips, real estate platforms, collaboration with developers, key management, notary visits and accompanying foreign buyers.
All these expenses may make professional sense. But they must be proven.
A real estate agent should keep, whenever possible:
- Contracts with developers or agencies.
- Sales mandates.
- Property visit sheets.
- WhatsApp messages with buyers and sellers.
- Follow-up emails.
- Property listings.
- Screenshots of advertising campaigns.
- Photos and videos of properties.
- Signs placed on properties.
- Calendar appointments.
- Reservations.
- Communications with notaries.
- Communications with lawyers.
- Travel and parking evidence.
- Connection between expenses and transactions.
- Commission invoices issued when a sale is completed.
If a real estate agent has a meal with a buyer, travels to a property, runs a social media campaign or pays for airport parking to pick up clients, the evidence should explain the link with the activity.
In the real estate sector, documentation does not only defend the expense. It also proves the commercial reality of the work performed.
For a wider overview of expenses commonly claimed by self-employed professionals, you can also read our guide on deductible expenses for the self-employed in Spain.
Expenses that may look professional but can be rejected
Some expenses may be useful for the professional personally, but Hacienda may still consider them private if there is no clear connection with the activity.
Examples include:
- Normal clothing.
- Non-specific footwear.
- Prescription glasses.
- Health expenses.
- Domestic purchases.
- Trips with a personal element.
- Meals with no client or business reason identified.
- Gifts with no commercial justification.
- Vehicle expenses without sufficient proof of professional use.
- The key is to distinguish between an expense that helps the person and an expense that is required by the business activity.
Not everything that makes working easier is automatically deductible.
If you need a broader explanation of how the Spanish Tax Agency analyses deductible expenses, you may also find our article how to know if an expense is deductible useful.
Practical checklist before deducting an expense
Before deducting an expense, ask yourself the following questions:
Do I have a valid invoice or supporting document?
Is it issued in the correct name of the self-employed person or company?
Is the invoice description clear?
Was it paid by card, bank transfer or business account?
Is it recorded in my accounting records or tax books?
Does it correspond to the correct tax year?
Can I explain the connection with my activity?
Can I link it to a client, supplier, project, property, campaign, trip or service?
Do I have additional evidence if Hacienda asks for it?
Could I defend this expense in two or three years?
If the answer is not clear, it is better to request a more complete invoice, keep more documentation or ask for advice before deducting it.
If you are starting a business activity in Spain or you are unsure about your tax obligations, our guide on being self-employed in Spain may also help you understand the wider tax framework.
Conclusion
Deductible expenses are an essential part of tax planning for self-employed workers and companies in Spain, but they are also one of the areas most frequently reviewed by Hacienda.
The invoice is important, but it is not always enough.
To defend an expense, you must be able to prove its reality, payment, accounting record, correct tax year allocation and, above all, its connection with the business activity.
Good document management reduces risks, prevents problems in a tax review and makes deductible expenses much easier to defend.
At Asesoría Orihuela Costa, we help self-employed workers, companies and professionals organise their accounting, review their deductible expenses and prepare tax records that can be properly defended.
If you are unsure whether an expense is deductible or how to justify your invoices correctly, contact our tax and accounting consultancy in Orihuela Costa.
Frequently asked questions about justifying deductible expenses in Spain
Is an invoice enough to deduct an expense?
Not always. The invoice is the main document, but Hacienda may also ask for evidence showing that the expense is connected to the business activity.
Can I deduct tickets or simplified invoices?
It depends on the case. They may be accepted in some situations, but they usually have less evidential value, especially if they do not identify the recipient of the expense. Whenever possible, request a complete invoice.
Is it better to pay business expenses by card or in cash?
It is better to pay by card, bank transfer or business bank account. Electronic payment helps prove who actually paid the expense.
Which expenses does Hacienda review more carefully?
Hacienda often reviews meals, restaurants, travel, hotels, vehicles, fuel, phone expenses, advertising, digital tools, large-store purchases and expenses that may have a private element.
What should a real estate agent keep to justify expenses?
A real estate agent should keep contracts with developers, sales mandates, property visit sheets, WhatsApp messages with clients, advertisements, campaign screenshots, property photographs, calendar appointments, reservations, travel evidence and any document connecting the expense to a property transaction.
Can I deduct expenses that do not generate immediate income?
Yes, provided there is a reasonable connection with the business activity. An expense may be intended to attract clients, promote services, maintain the business structure or generate future income.
What happens if the invoice description is too generic?
A generic description can make the expense harder to defend. It is better to ask for invoices with a clear description of the product or service and to keep evidence explaining the business purpose.
What should I do with old expenses that are poorly documented?
Review each expense individually, collect additional evidence and keep anything that helps justify it: bank payments, emails, WhatsApp messages, contracts, bookings, advertisements, photographs or documents showing the link with the business activity.