Corporate tax compliance management
Tax errors aren’t just minor slips—they lead to costs, penalties, and serious operational headaches.
Late filings, incorrect deductions, missed obligations or regulatory changes you weren’t told about… These are common issues—and they can result in audits, surcharges, delayed refunds or paying more tax than you should.
At GCO, we offer comprehensive corporate tax compliance for companies operating in Spain.
- We prevent penalties and surcharges by managing deadlines and filings accurately.
- We handle all Spanish tax forms, including VAT, withholdings, and IAE.
- We advise you on deductions, tax credits, and legal updates.
- We represent you before the Spanish Tax Agency in case of inspections or official notices.
Corporate tax compliance management
Are you exposed to tax risks?
Poor tax compliance isn’t just a burden—it’s a liability.
- Does your current advisor just submit returns without reviewing anything?
- Are you unsure which expenses you can deduct safely?
- Not confident you’re meeting all corporate tax obligations?
- Worried about receiving a tax notice and not knowing what to do?
- Operating across Spain—or from abroad—and unclear how to handle Spanish tax law?
A poorly managed corporate tax strategy—or one handled by non-specialists—can lead to issues with the Spanish Tax Agency and unnecessary financial losses.
At GCO, we provide ongoing, tailored corporate tax compliance services, so your company stays fully compliant—without stress, delays, or surprises.
Corporate tax compliance management
Stay compliant: We manage all your corporate tax duties
Your company fully aligned with the Spanish Tax Agency—without stress or delays.
We handle all required tax filings with accuracy and punctuality, so you don’t have to worry about deadlines, calculations, or penalties.
VAT (Forms 303 and 390)
We calculate, file, and submit your monthly and quarterly VAT returns and the annual summary. We track input and output VAT and manage compensations or refund claims accordingly.
Tax Prepayments (Forms 202 / 130)
We calculate and file prepayments toward Corporate Income Tax (for companies) or Personal Income Tax (for self-employed individuals under direct estimation), ensuring a balanced approach throughout the fiscal year and avoiding surprises at year-end.
Withholding Tax Declarations (Forms 111 and 115)
We manage monthly or quarterly filings for withholdings applied to employees, professionals, and landlords. We also handle the related annual summary forms (190 and 180) for a clean year-end process.
Corporate tax compliance management
Key business taxes: Well managed, fairly paid
Pay only what’s due—nothing more.
Core corporate taxes must be managed with accounting precision and legal accuracy. We ensure full compliance without overpayment.
Corporate Income Tax (Form 200)
We prepare and file your annual Corporate Income Tax return, reviewing your accounts, applying necessary fiscal adjustments and deductions, and ensuring everything aligns with your financial statements.
Economic Activities Tax – IAE (Form 840)
We assess whether your company is liable for IAE (based on turnover and activity), manage registrations, updates or deregistrations, and file the form with the Spanish Tax Agency or local authority.
Censal Declarations (Forms 036 and 037)
We keep your fiscal data up to date: address changes, business activity updates, tax regime modifications, or the start/end of tax obligations—ensuring all information is properly filed with the authorities.
Corporate tax compliance management
Representation and defence before the Spanish tax agency
We act on your behalf—right when you need us most.
In addition to day-to-day compliance, we serve as your fiscal representative before Spanish tax authorities. You’re never alone when faced with a notice or inspection.
Electronic Notifications Management
We continuously monitor your official electronic tax mailbox. We receive and respond to requests, notifications, and updates—so you don’t have to.
Assistance During Tax Audits
If the Tax Agency initiates an inspection, we collect, review and prepare all necessary documentation. We draft responses and accompany you throughout the process to ensure everything is handled properly.
Advisory on Regulatory Changes
Tax regulations change frequently in Spain. We keep you updated on anything that may affect your obligations or the way your business is taxed—and help you adapt without disruption.
Local Expertise, Global Vision
What sets GCO apart in corporate tax compliance?
Tax in sync with accounting, HR, and legal
Corporate tax doesn’t exist in isolation. Our technical team works in full coordination with all key areas of your business—avoiding errors, duplication, and misaligned decisions.
Proactive monitoring all year round
We don’t wait for deadlines. We alert you in advance, solve issues early, and help you anticipate risks before they become problems.
Digital platform for control and transparency
Share documents, review tax filings, and access your obligations in real time—with total visibility and no paperwork delays.
International expertise and complex structures
We advise companies with foreign parent entities, subsidiaries, operations across multiple Spanish regions, or advanced corporate structures—always with clarity and precision.
One point of contact, multiple areas covered
You won’t have to repeat your story. You’ll have a dedicated advisor who understands your business and coordinates everything for you.
Corporate tax compliance management
Isn’t switching advisors a hassle?
Changing advisors might seem like extra work in the middle of your day-to-day operations. But staying with a tax firm that doesn’t alert you to risks, misses deadlines, or fails to coordinate with the rest of your business can end up costing you far more in the long run.
At GCO, we make the transition smooth and effortless:
- We review your current situation and identify immediate risks or improvement areas.
- We request all the necessary documentation from your previous advisor—you don’t have to chase anyone.
- We coordinate the process with you to avoid disruptions or added workload for your team.
- We assign you a dedicated point of contact to ensure everything flows seamlessly from day one.
Switching doesn’t have to be complicated. What’s truly risky is staying with a system that no longer gives you peace of mind.
Process and Methodology
A Clear Path to Excellence for your Company
Our customer-centric process is tailored to your specific needs. From initial analysis to strategy implementation, we are with you every step of the way.
- Initial Situation Analysis
- Development of Customized Strategies
- Solutions Implementation
- Continuous Monitoring and Adjustment
FREQUENTLY ASKED QUESTIONS
Answering all your doubts about our corporate tax compliance service
What taxes does a company need to manage in Spain?
It depends on the type of entity and its business activity, but the main ones are: Corporate Income Tax, VAT, withholding taxes (for employees, freelancers, and landlords), IAE (Economic Activities Tax), and tax prepayments. At GCO, we handle the calculation, filing, and monitoring of all these obligations throughout the year.
Can we deduct expenses like meals, travel, or company vehicles?
Yes—provided they meet the criteria set by Spanish tax regulations. At GCO, we review each case to minimise risks and ensure any deductions applied are fully justified in the event of a tax inspection.
What if we operate in multiple regions or from abroad?
These situations can trigger complex tax implications, both at the regional and international level. We help you structure your tax compliance properly to avoid errors or double taxation.
What happens if we receive a tax notice or face an audit?
At GCO, we manage the entire process: we explain what the notice means, prepare all necessary documentation, and represent you before the Spanish Tax Agency—from the first communication to final resolution.
Nuestro equipo fiscal
Conoce a Nuestros Expertos en Fiscalidad
Experiencia y conocimiento a tu servicio para una gestión fiscal óptima.
Managing Partner
Tax Department Senior Manager
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