Bilbao or Barcelona, and the green north versus the Mediterranean coast

Key rules

• Tax office: In Bilbao you file income tax with the Diputación Foral de Bizkaia, not the national tax agency.
• Residence date: Where you live on 31 December decides which region's income tax scale applies.
• Daily language: You can live daily life in Spanish in both cities.
• Public jobs: Public-sector jobs in both regions may require or reward the regional language.

The short answer

Choose Bilbao if you want mild summers, green hills, a strong regional wage level and a different tax system. Choose Barcelona if you want the Mediterranean coast, warmer winters and more sun. Bilbao versus Barcelona is a trade between climate and wages on one side and Mediterranean lifestyle on the other. The tax office and the language policy also differ.

Climate: mild and wet, or warm and sunnier

Bilbao is Atlantic. Expect a July high of about 25°C, a January low of about 4–5°C, rain of about 1,100–1,200 mm a year and about 1,700 hours of sun. Bring a raincoat all year.

Barcelona is Mediterranean. Expect a July high of about 29–30°C, a January low of about 6–7°C, rain of about 600 mm and about 2,500 hours of sun.

If summer heat bothers you, Bilbao is far easier. If grey, damp days wear you down, Barcelona is the better bet.

Pay and rent

The Basque Country is among the highest-paying regions in Spain, with average gross pay of about €34,000–€38,000 a year. Bizkaia, where Bilbao sits, is close to that average. These are regional averages for employees, not city figures and not net pay. Look up current Barcelona and Catalonia pay for your own job before you compare.

Asking rents in Bilbao were about €14–17 per m² a month in 2025, so roughly €1,100–1,300 for a typical flat. Check live listings for both cities, because prices have risen steadily.

Tax: Bilbao has its own system

The Basque Country runs its own tax system. If you live in Bilbao, you file your income tax return with the Diputación Foral de Bizkaia, not with the national tax agency. Barcelona residents use the national agency.

Bizkaia sets its own scale, from about 23% on the first band to about 49% at the top. The bands, deductions, allowances and credits differ from the common system. Bizkaia has its own forms, deadlines and online portal. The income campaign runs roughly April to June. Bizkaia updates its scale each year, so check the current bands before you file.

Wealth tax and inheritance tax are also set locally in the Basque Country and are often more favourable. VAT mostly follows the common model.

The region where you are resident on 31 December decides which scale applies. The timeline below covers this.

Language: Spanish works in both, but policy differs

Barcelona. You can live daily life in Spanish. Nearly everyone speaks it, and Catalan speakers switch readily. Catalan appears on signs, official forms and public communications. Learning basic Catalan is appreciated, and the regional language-normalisation consortium offers free or cheap courses. Public services offer Spanish on request.

Public schools teach mainly in Catalan, with Spanish as a subject. Newcomer children usually get support classes (aulas de acogida), and most adapt within one or two years. Rules on how much Spanish schools must use are legally contested and may change, so ask the school you are considering.

Catalan is an asset or a requirement for public-sector jobs and some other positions.

Bilbao. Daily life also works in Spanish. Basque is spoken by a minority, roughly a fifth to a quarter of residents fluently, but you see it on signs and at public events.

Schools offer three models: A (Spanish, with Basque as a subject), B (bilingual) and D (mostly Basque, with Spanish as a subject). B and D dominate in public schools. Newcomers' children are normally placed in B or D and get language support.

Public-sector jobs, including the Basque government, the health service, town halls and teaching, assign a language profile with a deadline date. A Basque certificate is often required or earns points. Private jobs rarely need it.

Getting around

Bilbao has direct flights to London, Paris, Amsterdam, Frankfurt, Brussels, Lisbon, Rome, Milan, Dublin and other European cities. It has no regular intercontinental service, so long-haul trips need a connection. Check Barcelona's route list for your own needs.

How to decide

• Ranking climate and pay first: Bilbao.
• Ranking sun, sea and warm winters first: Barcelona.
• Planning a public-sector job: check the language requirement for each region first.
• Moving with children: compare school language models in each city before you pick a neighbourhood.

Timeline and deadlines

• Settle where you are resident on 31 December, because that region's income tax scale applies to the whole year: by 31 December each year

• Check the current Bizkaia bands, deductions and allowances before you file: each year, before the campaign opens

• Check the Basque language profile and its deadline date if you apply for a public-sector job: before you apply, as each post sets its own date

Frequently asked questions

Can I live in Barcelona without speaking Catalan?

Yes. Nearly everyone speaks Spanish, and public services give you Spanish on request. Expect Catalan on signs and official forms, and free or cheap courses are given by the Consorci per a la Normalització Lingüística.

Do I need Basque for a job in Bilbao?

Rarely in private jobs. Public-sector jobs, such as the Basque government, the Osakidetza health service, municipal posts and teaching, assign a language profile (PL1 to PL4).

Will I file my income tax differently in Bilbao?

Yes. A Bilbao resident files with the Diputación Foral de Bizkaia, not the Agencia Tributaria.

Can I fly long-haul from Bilbao?

Not on a regular direct service. Bilbao has direct flights to cities such as London, Paris, Amsterdam, Frankfurt, Lisbon and Rome. For intercontinental trips you connect through a hub.