How can you deduct part of your donation from your income tax ?

Donations higher than about U$ 30 (or pesos 1200) can be deducted, up to 5% of your taxable net gains

It means that AFIP pays you back a portion of your donation, and the Foundation receive your donation plus that portion from AFIP

In other words, the State adds a considerable proportion to the amount you donate, and thereby increases the funds received by the Foundation

Instructions are here