A professional moving to Bilbao with a job offer usually arrives with the Beckham Law in mind. That is a map error: the Beckham Law does not exist in Bizkaia. Under the Economic Agreement, the income tax of anyone resident in foral territory is governed by foral law, and article 93 LIRPF is state legislation. What exists in Bizkaia is something else, with another name, other requirements and, for many profiles, better numbers: the special regime for displaced workers of article 56 bis of Norma Foral 13/2013, developed by Decreto Foral 47/2014 and clarified by Instruction 4/2023 of the Hacienda Foral.
What the 56 bis offers: two advantages that stack
The foral regime is not a flat rate. The taxpayer remains within the foral income tax and its progressive scale, but with two substantial corrections:
1. A 30% exemption on gross employment income derived from the assignment. Out of a 42,000 euro salary, 12,600 fall straight out of the tax base.
2. Relocation expenses deductible up to 20% of gross income. The list is generous and designed for people who genuinely settle: travel and moving costs, up to two trips per year to the home country, children’s schooling, Basque or Spanish language courses for the taxpayer and family, and the rent and utilities of the main home in Bizkaia. Anyone renting in Bilbao fills that cap with ease.
On top of this come an exemption for income from assets located abroad that has already been taxed there, and full compatibility with the ordinary foral deductions (descendants, housing rental or purchase, EPSV pension schemes).
What it means in euros
With Bizkaia’s 2026 scale and a 42,000 euro gross salary:
| Scenario | Approximate annual tax | Annual saving |
|---|---|---|
| Ordinary regime | ~7,700 € | |
| 56 bis, 30% exemption only | ~4,200 € | ~3,500 € |
| 56 bis with expenses documented at the 20% cap | ~1,300 € | ~6,400 € |
Sustained over the eleven years the regime can last, the accumulated saving ranges from 39,000 to 70,000 euros on a constant salary. The higher the salary, the larger the absolute saving.
The requirements, one by one
All of them must be met simultaneously. Instruction 4/2023 spells them out:
1. No Spanish tax residence in the five preceding tax years. Assessed year by year (for a 2026 move, tax years 2021 through 2025), plus a five-year stay abroad counted date to date. Occasional stays in Spain for holidays or work do not break the requirement, but the administration may demand proof of residence abroad, with a higher evidentiary bar for arrivals from low or no-tax territories.
2. The move must result from an employment contract. Met when an employment relationship begins with an employer in Spain, or when the employer orders the assignment with a posting letter. Since 1 January 2022 the regime also covers self-employed workers in qualifying activities.
3. Highly qualified work. The activity must be directly and principally related to research and development, scientific or technical activities, technological innovation, sustainability and environmental work, financial activities, organisation, management and financial control, or senior commercial roles. Engineering, data, science and finance profiles fit naturally.
4. Direct and principal dedication. At least 85% of annual working time must go to those qualifying activities, tested year by year.
5. Category equivalent to contribution group 1. The regime is reserved for highly qualified profiles; for employees, the payslip evidences it directly.
6. Work actually performed in Spain. Work performed abroad may not exceed 15% of the annual total, extended to 30% where duties are assumed for other group companies (article 42 of the Commercial Code).
The mechanics: an annual election, without the Form 149 trap
Here lies the most important operational difference from the state regime. The state Beckham is lost forever if Form 149 is not filed within six months of registration with social security. The foral regime works the other way round: the election is exercised every year in the tax return itself, can change from one year to the next, and whoever did not opt in on arrival may still do so for the remaining years. The total window is the year of the change of residence plus the following ten, with one caveat: years in which the regime is not applied still consume the clock.
A year in which a requirement is breached (for instance, exceeding 15% of work abroad) does not expel you from the regime: it simply does not apply that year, and resumes the next if the requirements are met again.
56 bis versus the state Beckham Law
| Bizkaia (art. 56 bis NF 13/2013) | State (art. 93 LIRPF) | |
|---|---|---|
| Mechanics | Foral income tax with 30% of salary exempt | Flat 24% up to 600,000 € |
| Relocation expenses | Deductible up to 20% of gross income, housing rent included | Not deductible |
| Duration | Up to 11 tax years | 6 tax years |
| Application | Annual election in the return, no prior deadline | Form 149 within 6 months, non-extendable |
| Prior non-residence required | 5 tax years | 5 tax years |
| Self-employed | Included where the activity qualifies | Only through restricted channels |
| Personal and family deductions | Compatible | Not available |
For very high pay the state flat rate ends up winning; for mid-to-high salaries with rented housing in Bizkaia, the foral regime is frequently more favourable. The comparison is in any case theoretical: no one chooses the regime, the territory of residence determines it.
Gipuzkoa and Álava maintain twin regimes under their own foral laws, with nuances; Navarra runs a separate system of its own.
Where cases are won or lost: proving non-residence
The five-year requirement is binary and rests on evidence. Three typical situations:
- Returnees from treaty countries with tax certificates (United Kingdom, Germany, Switzerland): straightforward proof through a tax residence certificate.
- Returnees from the Gulf (UAE, Saudi Arabia, Qatar): often no usable certificate exists, and proof runs through documented physical absence: passport stamps, official immigration records, local residence permits, employment and housing contracts, bank accounts and consumption in the destination country.
- Anyone receiving a foral assessment for earlier years as a resident (typically over undeclared rental income in Bizkaia): accepting it concedes residence for that year and closes the regime. Before paying, it is worth weighing the appeal, a consistent non-resident regularisation for those years, and the full numbers of both routes. In Bizkaia, contesting suspends the debt without any guarantee where the amount does not exceed 20,000 euros.
Consistency is everything: the position taken on an assessment for a past year conditions access to the regime for the following decade.
Moving to Bizkaia, or already there? We assess eligibility and the non-residence evidence in our Bizkaia displaced workers service; if your destination is common territory, the reference is the state Beckham Law. More context in the Basque foral regime guide.
Conclusion
The 56 bis is one of Europe’s most generous talent-attraction regimes and one of the least known: a 30% exemption, real expense deductions, an eleven-year runway and an annual election mechanism that forgives the oversights the state Form 149 punishes with definitive loss. Its entry condition, prior non-residence, is also its main evidentiary minefield, especially for Gulf returnees. Assessing eligibility before the move, or immediately after, makes the difference between capturing the full benefit and losing it over a poorly defended file.