How Mandatory Electronic Invoicing Will Change Your Company’s Operations
In this post, we analyze the key aspects of the new mandatory electronic invoicing system, what it means for companies, and how to prepare for its gradual implementation.
01/04/2026
Why the Tax Authorities May Deny VAT Deductions in Transactions Between Related Companies
The Spanish Tax Agency (AEAT) has analyzed a leasing structure that allowed VAT to be improperly deducted. We explain what happened and how to avoid this risk in your company.
01/04/2026
Most important tax obligations for April 2026
April 2026 tax calendar: all obligations that freelancers and companies must file this month, explained clearly and simply.
01/04/2026
Limit of the deduction for international double taxation in the Personal Income Tax (IRPF)
Key points to understand how the limit of the deduction for international double taxation is calculated and how it affects your foreign income.
31/03/2026
What does Article 42.2.a) of the LGT really imply?
How to understand the liability under Article 42.2.a) of the LGT and protect your company with solid and personalized tax advice.
31/03/2026
Personal Income Tax (IRPF) in Spain: Basque Country, Navarra, and the State Regime
Personal Income Tax (IRPF) in Spain: Basque Country, Navarra, and the State Regime
31/03/2026
Why a share buyback can be considered artificial
The Spanish Tax Agency (AEAT) declares a share buyback and capital reduction operation as artificial: we explain what it means and how to protect yourself.
31/03/2026
HappyIndex® At Work: Why Our 2025 Seal Benefits Both Clients and Talent
Discover How Our Satisfaction and Engagement Seal Drives Service Quality and Team Well-Being.
30/03/2026
ISO/IEC 27001 at Adlanter: Certified Since 2024 to Protect Your Information
Protecting Your Data with the Most Recognized International Standard in Information Management
30/03/2026
VAT exemption for low-income freelancers: what changes and how to apply it
In this post, we explain the measure designed to reduce administrative burdens and ease the tax pressure on freelancers, with an estimated saving of up to €600 per year.
25/03/2026
Essential Guide to Personal Income Tax in Spain for Foreign Residents
In this post, we analyze income tax in Spain for foreign residents: tax residency, international income, and double taxation.
23/03/2026
Urgent Government Measures in Response to the War in Iran: How They Affect Businesses and Freelancers
Discover in this post the tax reductions, aid, and strategies your company can leverage in response to the crisis caused by the Middle East conflict.
23/03/2026
The 5 most common mistakes when creating a startup
Avoid the most common mistakes when launching your startup. We’ll show you how to prevent them and build a solid foundation to scale without complications.
23/03/2026
How Rentrak Spain optimizes its accounting management and international reporting with Adlanter’s support
Rentrak Spain’s journey towards more accurate, reliable financial operations aligned with Comscore Group’s international standards.
23/03/2026
Most Common Income Tax Filing Mistakes and How to Avoid Them
Avoid common mistakes, optimize your deductions, and file your income tax return with peace of mind and confidence.
20/03/2026
2025–2026 Income Tax Campaign: key dates, who must file, and what you need to keep in mind
In this article, we go over the key dates, filing methods, who is required to file, and other aspects you should keep in mind from now on.
19/03/2026
Bizkaia Income Tax Return: What’s New for 2025–2026
Discover the tax changes, deductions, and key dates that will affect the Income Tax Return in Bizkaia this year.
13/03/2026
2025 Income Tax Updates: Key Changes for the 2026 Filing Season
In this article, we analyse the main updates for the 2025–2026 income tax campaign and what implications they may have for taxpayers.
13/03/2026
Working Remotely from Spain for a Foreign Company: Employer Obligations
In this article, we analyze the key aspects that every foreign company must consider when an employee resides and works remotely from Spain.
03/03/2026
ECA Certification: What It Means for Your Company When You Are Advised by Accredited Accounting Experts
Discover how the ECA certification (Accredited Accounting Expert) supports our excellence and rigor in accounting and financial advisory services.
01/03/2026
What Are the Requirements of the Beckham Law? Save on Taxes When Moving to Spain
The practical guide for professionals, digital nomads, entrepreneurs, and executives who want to optimize their taxes when moving to Spain in a 100% legal and secure way.
10/02/2026
Legalization of Accounting Books in Spain 2025-2026: Deadlines and Penalties
Frequently Asked Questions About the Legalization of Accounting Books in Spain: Who Is Required to Comply, and What Are the Deadlines?
05/02/2026
How International Remote Work Affects Your Company’s Taxation
More and more employees are requesting to work from home or from another country. But did you know that this flexibility can have significant tax implications for your company?
31/01/2026
2026 Income Tax Table: brackets, rates, and how much you need to withhold
Discover the 2026 income tax brackets, how withholdings work, and what you need to consider based on your personal or family situation.
22/01/2026
Key Tax Forms and Deadlines You Can’t Miss: January 2026
January marks the first major tax push of the year. Know which forms and deadlines are essential to start 2026 fully compliant.
09/01/2026
How to Improve Your Company’s Profitability in 90 Days: Steps That Actually Work
A practical approach to identifying immediate improvement opportunities, optimizing decision-making, and boosting short-term business profitability without losing sight of long-term sustainability.
07/01/2026
Tax Agency Delays Verifactu to 2027: What Really Changes for SMEs and the Self-Employed
The obligation to register and submit invoices to the Tax Agency is delayed by one year, but companies and the self-employed must prepare to comply with the Anti-Fraud Law.
15/12/2025
Tax Updates for 2026: Key Points for Companies and Taxpayers
In this post, we summarize the measures already confirmed for 2026 and explain what you can start doing today to avoid surprises.
10/12/2025
5 Reasons Why Your Company Should Digitize Invoicing Today
Discover why your company should digitize invoicing and adapt to the Verifactu system. Comply with the law, increase efficiency, and improve accounting control.
12/11/2025
Year-End Checklist for Your Company’s Tax Planning
At Adlanter, we’ve prepared a complete guide to help you optimize your taxes at the close of the fiscal year.
11/11/2025
New law changes the size classification of SMEs in Spain: what it means for your business
The new regulation redefines what it means to be an SME and opens the door to simpler, less costly accounting models.
11/11/2025
The Tax Agency opens the door to new personal income tax (IRPF) deductions for mortgage cancellations
A TEAC ruling is changing the interpretation of the main residence deduction: if you sold your home and used the proceeds to pay off your mortgage, you may now be able to recover part of your personal income tax (IRPF).
11/11/2025
The new smart accounting driving businesses in Spain
From the first commercial ledgers of the 15th century to real-time data: this is how accounting has evolved into a strategic tool.
11/11/2025
Form 232: control tax risk and improve your company’s transparency
In this post, we explain what it is and who must submit to the Tax Agency the November declaration that many companies overlook.
11/11/2025
NRIT: How to Recover Overpaid Taxes on Rental Income from Real Estate in Spain
In this article, we analyze how a new court ruling allows non-resident landlords to deduct expenses and claim refunds for the past four years.
29/10/2025
How to Protect Your Company’s Tax Structure Against Regulatory Changes and Tax Audits
In an increasingly dynamic tax environment, companies must not only comply with the law, but also anticipate possible reinterpretations by the Spanish Tax Agency (Hacienda) and design structures that stand the test of time.
28/10/2025
How much do Non-resident pay in taxes if they own property in Spain?
In this article, we clearly and practically explain how you must pay taxes on your Spanish properties if you are a non-resident.
27/10/2025
Webinar | Accounting and Tax Year-End Closing 2025: Key Insights to Face the New Developments in Personal Income Tax (IRPF) and Co ...
Discover the main tax developments for the 2025 fiscal year and get ready for a smooth year-end closing. Join our free webinar on 6 November to learn about all the changes and their practical application.
16/10/2025
3 Common Tax Mistakes Our Labor Advisory Service Also Helps Prevent
Discover how an optimal integrated labor service also protects your company from costly tax penalties.
09/10/2025
Webinar | The Verifactu System: The Obligation That Will Change Business Invoicing in Spain
In this article, we explain what the Verifactu system is, its main obligations and implementation deadlines, and invite you to our free webinar on October 16 to learn more about its impact on business.
02/10/2025
Most Common Accounting Mistakes in SMEs and How to Avoid Them in 2025
Discover the most frequent accounting mistakes in SMEs and learn how to avoid them. Optimize your company's accounting and comply with tax regulations in 2025.
15/09/2025
Deductible Expenses in Your Commercial Premises: How to Optimize Your SME’s Taxation
In this article, we review the requirements set by the tax authorities and the main deductible expenses related to commercial premises, including examples and practical tips for SMEs looking to optimize their taxation.
10/09/2025
Labor and Tax Consulting for Industrial Companies in Bizkaia: Challenges and Solutions
In this post, we analyze the main challenges faced by industrial companies in Bizkaia and how a specialized labor and tax consultancy in Erandio can provide practical solutions.
04/09/2025
Tax updates for companies in the Basque Country in 2025 and 2026
Discover the tax modifications in Álava, Bizkaia, and Gipuzkoa that affect companies in 2025 and 2026.
30/06/2025
Do you get paid by card? The Tax Agency introduces new obligations for companies in 2025
We explain how this new regulation affects your company and what steps you need to take to comply without risks.
18/06/2025
Accounting Consolidation: Obligations, Methods, and Exemptions
This article introduces a key tool to transparently reflect the net worth and financial results of a group of companies.
29/05/2025
Verifactu 2025: Everything You Need to Know About the New Electronic Invoicing System
In this article, we explain what the Verifactu system is, its technical requirements, and how the recent postponement of the obligation to adapt invoicing software affects you.
26/05/2025
Tax Benefits for Small-Sized Companies in Spain
In this article, we analyse the main tax incentives available to small-sized companies, the requirements to apply them properly, and the key strategies to maximise their impact.
14/05/2025
