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Ostrom Circle

The people who make the Institute possible with a regular contribution. You choose the amount and we collect it every six months by direct debit.

Choose your contribution

Choose your contribution

It costs you 80 € a year, after tax relief.

We are a foundation: Spanish taxpayers deduct 80% of the first €250 they give each year and 40% of the rest (45% after three years of giving). €250 a year costs you €50. Tax benefits

Your details

Tax benefits

Fundació Institut Ostrom Catalunya is covered by the Spanish charitable giving regime (Law 49/2002). For Circle contributions and donations:

Individuals (Spanish income tax)

  • 80% of the first 250 € you give each year.
  • 40% of the rest, or 45% if you gave the Institute the same amount or more in each of the two previous years.
  • Gifts count for relief up to 10% of your taxable base.

Companies (Spanish corporate tax)

  • 40% of the gift, or 50% if they gave the same amount or more in each of the two previous years.

How it works

Give us your tax ID and postcode. In January we report contributions to the tax office (form 182) and the relief appears in your draft tax return. We can send you a donation certificate if you need one.

Work out what it costs you

Who is giving
€
You get back300 €
It really costs you200 €

Counts up to 10% of your taxable base for income tax.

Guidance based on the rules in force in 2026. Please check with your tax adviser.

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