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How to prepare for a tax inspection in 2026 and reduce tax risks

Overview
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Tax control plan 2026: what does the Treasury monitor and how to prepare

The Tax Control Plan 2026 sets the priorities of the Tax Agency and defines which profiles it will inspect most intensively. Understanding these criteria is key to anticipating and reducing tax risks.

The Tax Agency reinforces its strategy with a clear approach: more data, more automation and greater capacity to detect inconsistencies. The goal is no longer just to detect obvious fraud, but to identify situations where the information doesn't fit.

In this context, entrepreneurs, freelancers and investors must pay special attention to how they are structuring their activities.

What does the Treasury monitor in 2026

The plan establishes the main lines of action, focused on sectors and behaviors with the highest fiscal risk.

-The digital economy is one of the main focuses. The Treasury intensifies control over revenues generated on platforms, e-commerce and online activity, especially when there is no correct declaration.

-The real estate sector remains under supervision. Unreported rents, transactions through companies and valuations that do not reflect the reality of the market are analyzed.

-Self-employed workers and SMEs remain a relevant profile, especially when they have inconsistent margins, recurring losses or intensive use of cash without clear justification.

-Control is also reinforced over companies without real activity or used personally, as well as structures that seek to artificially reduce the tax burden.

-In the case of large assets, the level of surveillance is higher. International structures, tax planning and possible differences between reported income and standard of living are analyzed.

-Multinationals and related operations are also part of the focus, especially in terms of transfer pricing and international tax planning.

How the Treasury detects fiscal irregularities

-The current system is based on massive data analysis and process automation.

-The crossing of information makes it possible to compare bank data, billing, economic activity and financial behavior in real time. When there are inconsistencies, the system generates alerts.

-The exchange of international information reinforces this control. The Treasury has access to accounts, assets and operations abroad, which significantly reduces fiscal opacity.

-Information models provide key information on operations, assets and economic relations, which are integrated into analysis systems.

-One of the most decisive criteria is the relationship between consumption and reported income. If the standard of living does not match the declared economic capacity, the system detects it.

How to prepare for a tax inspection in 2026 and reduce tax risks

-Preparation can no longer be reactive. Anticipating is the only way to reduce risks.

-Fiscal coherence is the central element. It's not just about declaring income, but about the entire economic structure making sense from the point of view of the Administration.

-Having an adequate structure is key, especially in cases of investment or international activity. Corporate and fiscal decisions must respond to a real and sustainable logic.

-Tax planning remains a valid tool, as long as it is well structured. Improvised or economically unfounded solutions are one of the main sources of risk.

Avoiding “patching” is essential in an environment where data is automatically crossed and any inconsistency ends up being detected.

Conclusion

In an environment where the Treasury crosses data in an automated way, the risk is not in making obvious mistakes. It's about maintaining structures that don't stand up to full analysis.

Entrepreneurs, investors and profiles with international activity are today the main focus of control.

Reviewing your tax situation before an inspection is no longer a tactical option. It's a strategic decision.

If you have operations, assets or structures outside of Spain, it's time to analyze if everything is correctly aligned.

If you want to review your case with a strategic approach and avoid unnecessary risks, you can contact our team.

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