Donate now – every contribution counts!

No matter the size, your donation helps us support the Arithmeum’s cultural work and bring new projects to life. Whether as a one-time gift, a recurring contribution, or a sponsorship, every form of support helps preserve the Arithmeum as a unique place of education and inspiration.

You can easily make a donation via bank transfer:

Account holder: Gesellschaft der Freunde und Förderer des Arithmeum e.V.
Bank: Sparkasse KölnBonn
IBAN: DE58 3705 0198 1958 8701 39
BIC: COLSDE33XXX

Donations to the Society of Friends and Supporters of the Arithmeum are tax-deductible. Of course, we will provide you with a donation receipt. For donations under € 300, your bank statement together with a simplified donation receipt (available for download here) is sufficient for tax purposes. For donations above € 300, you will automatically receive an official donation receipt from us in the first quarter of the following year.

Please include your name and address in the reference field of your transfer, or feel free to contact us – we will be happy to assist you.

You can also scan the QR code with your banking app; the transfer details will be filled in automatically.