Rather have this calculated for you?
kontora generates your tax forms box by box, tells you how much to set aside and reminds you before every deadline.
Gestoría (tax and admin agency)
A gestoría is a professional firm that handles your tax, labor, and administrative filings with the tax agency, social security, and other bodies on your behalf. It is not legally required, but most freelancers and small businesses in Spain hire one to avoid mistakes and missed deadlines.