First 72 Hours That Protect Your Wealth
Receiving an AEAT inspection notice is one of those moments that makes everything else stop. For high-net-worth individuals and internationally mobile families, the first 72 hours are when you either protect your position or unintentionally make things harder. Quick, unplanned reactions, half answers to the tax inspector and casual comments can all create risk that is hard to undo later.
An AEAT inspection usually begins with a written notice that tells you which tax years are under review, which taxes are involved and what documents are required. For those with Spain and UK connections, structures in several countries and foreign income, Spanish tax inspections often raise questions about residency, source of funds, and how different legal entities fit together. What looks like a simple request can sit on top of a very complex picture.
In these early days, three themes matter most: preserving evidence, coordinating your professional team and running a disciplined communications protocol. From our Anglo-Spanish perspective at Del Canto Chambers, we see that an integrated legal and tax approach at this stage can make a real difference to wealth protection, privacy and reputation.
Reading the AEAT Notice Without Triggering Extra Risk
Your first task is to read the notice carefully, but calmly. You are trying to understand the frame of the inspection, not to solve the entire issue in one night. Key things to identify include:
- Which tax years are being reviewed
- Which taxes are involved, for example, income tax, wealth tax, corporate tax or non-resident tax
- Whether it is a limited review or a wider, full inspection
- Deadlines for replying or attending meetings
- Any specific instructions about format, such as electronic submissions or personal attendance
What you should not do in the first hours is just as important. Avoid calling AEAT impulsively to explain your situation. Avoid giving oral explanations on the spot if an inspector appears or calls without your advisers present. Avoid sending any documents before a professional team has reviewed them, especially if they are incomplete or you are unsure what they show.
Summer periods add another layer of stress. Key people may be away, records may be in another country and holiday plans can clash with short timetables set by AEAT. This is exactly when you need structure, not speed for its own sake.
To help your advisory team act quickly, start assembling a core package of information for secure transfer:
- A clean scan of the AEAT notice, including all pages and annexes
- Your most recent Spanish and UK tax returns
- A short summary of your main assets and entities
- Simple charts of companies, trusts or family investment structures
- Any previous correspondence with AEAT or with HMRC
Spanish tax inspections are increasingly data-driven and cross-checked with foreign tax authorities, so your team will want to see how your Spanish and UK positions fit together from day one.
Preserving Evidence Across Borders and Structures
Once a notice has been received, evidence preservation is not optional. Intentional destruction or alteration of records after an inspection starts can be treated as very serious behaviour. Within the first 24 to 48 hours, you should:
- Freeze any routine document destruction schedules or shredding instructions
- Ask internal staff and external bookkeepers to pause non-urgent “tidying” of email, accounting files or document folders
- Arrange secure backups of key files, including bank information, contracts and tax filings
- Keep a simple record of what has been preserved and where it is stored
For HNW families, the volume and spread of records can be wide. You might have:
- Multiple bank accounts in several countries
- Trusts and family investment companies
- Property in Spain, the UK and other jurisdictions
- Luxury assets such as boats, aircraft or art
- Corporate and holding structures in different territories
In that sort of profile, consistency of documentation is key. AEAT may compare Spanish returns with information from other countries, including the UK. Your advisers will want to align residency files, travel day counts, double tax treaty tie-breaker analyses and any non-domicile planning that affects where income or gains are taxed.
Good practice is to create a central case file, managed by a lead lawyer or barrister. All versions of timelines, spreadsheets and explanations feed into that file, so you do not end up with different advisers giving slightly different accounts to different authorities.
Coordinating Your Barrister, Lawyer and Tax Advisers
In the first 72 hours, you are not just collecting documents, you are building your defence team. Each professional has a different role:
- Spanish and UK lawyers focus on legal strategy, rights and formal replies
- Barristers concentrate on contentious issues, technical arguments and potential litigation or appeals
- Tax advisers and accountants handle numbers, reconciliations and the practical context of how records were kept
For cross-border Spanish-UK matters, the value of an integrated Anglo-Spanish team is that everyone is working from the same assumptions and treaty analysis. You avoid gaps between what is said in Spain and what is said in the UK.
Very early on, appoint a clear “case captain”. This person, often a lawyer or barrister with cross-border experience, should:
- Be the only person authorised to contact AEAT, unless they delegate in writing
- Approve all documents and explanations before they are sent
- Coordinate communications with foreign advisers, trustees, private banks and family office staff
- Make sure retainer and engagement letters reflect that this is an inspection defence, not routine annual compliance
Those first days are also the time for a rapid risk assessment. The team will look at:
- Any contentious residency years or split years
- Structures or assets that might not have been fully reported in Spain
- Whether there is any route for early regularisation or correction
- Reputational sensitivities, such as possible press interest, family office concerns or lender relationships
For many HNW clients, tax, probate, property and dispute resolution questions overlap. A joined-up review at the start may reveal settlement routes that preserve options and reduce long-term disruption.
Building a Safe Communications Protocol From Day One
Without clear rules, well-meaning family members or staff can say things to AEAT or to third parties that create problems. A simple communications protocol in the first 72 hours can save a lot of pain later. Key points include:
- Only the case captain, or people they name, may speak to AEAT
- All written communication to AEAT flows through the legal team
- Internal emails and messages about the inspection should be factual and restrained, with no guesses or emotional comments
- Family office staff and executives are told not to give explanations to anyone outside the agreed circle
On the practical side, we usually suggest that clients:
- Move inspection-related communications to secure channels agreed with the legal team
- Label and keep separate communications that may be subject to legal professional privilege
- Avoid casual messaging apps for detailed tax discussion, especially group chats
- Maintain a simple log of all contacts with AEAT, including dates, times and topics
This protects privilege where it applies and reduces the chance that inconsistent stories appear in different documents.
You also need to think about external messaging. Banks, business partners or, in rare cases, the media may hear that there is an AEAT inspection. In some expatriate communities, especially in summer when social circles are active, news and rumours travel very quickly. Any comment about the inspection, even a short reassurance, should match the legal strategy and be cleared with the lawyer or barrister leading the case.
Securing Control of the Process and Your Next Steps
By the end of the first 72 hours, your main aim is control. That usually means you have:
- Read and understood the AEAT notice without overreacting
- Taken clear steps to preserve evidence across all relevant countries and structures
- Put in place an integrated Anglo-Spanish team with a clear case captain
- Agreed a disciplined communications protocol for family, staff and advisers
After that early window, the process moves into its next phase. There will usually be written responses, document submissions and sometimes meetings or negotiations with AEAT. Depending on your situation, your team may also consider voluntary corrections or regularisation options before official positions harden and arguments become more limited.
For those who know they have material Spanish connections, complex residency histories, offshore structures or past Spanish tax inspections, it is sensible to think about these issues even before a notice arrives. A pre-inspection readiness review, especially ahead of busy travel or property use periods, can put you in a much stronger position if AEAT attention does come. From our Anglo-Spanish base at Del Canto Chambers, we see that early, calm and coordinated action in the first 72 hours is often what keeps wealth, privacy and reputation under control when Spanish tax inspections begin.
Protect Your Position Before a Spanish Tax Inspection Escalates
If you have received a letter from the Spanish Tax Agency or are worried about a potential enquiry, we can help you respond calmly and strategically. Our specialist lawyers at Del Canto Chambers regularly advise international clients on handling Spanish tax inspections, reducing the risk of penalties and unnecessary disputes. Speak to us today to outline your situation and we will explain your options clearly. To arrange a confidential discussion, please contact us.
