Official sources, always cited
Every relevant figure (a rate, a deadline, a penalty, a threshold) is checked against its primary source: the Official State Gazette (BOE), the Spanish tax agency or Social Security. When a guide cites a law or a form, it links the consolidated text or the official page so you can check it yourself.
A review date on every page
Every guide and every calculator carries a visible update date. Tax rules change, and a figure with no date is worthless: we would rather tell you when we last reviewed each page than pretend it is timeless.
We monitor the BOE daily
kontora checks the Official State Gazette every day for changes affecting the self-employed and companies. When something changes, we update the figures and dates on the affected pages. It is the same monitoring engine that, inside the product, alerts our users.
Honest copy as a rule
We never claim to file on your behalf: kontora generates the drafts box by box, explains every figure and reminds you of every deadline, and it is you who presses "File" from the app with your digital certificate (303, 130, 111, 115 and 123 by direct filing; 349, 347, 190, 180 and 193 through TGVI) or who files the remaining forms on the AEAT website, or your gestor does. An automated check in our publishing system blocks any page that overpromises or uses seals that do not exist, such as a supposed AEAT certificate for software.
General information, not advice
The information on these pages is general and may not fit your specific case. It does not replace advice from a professional who knows your circumstances. For decisions with real impact, check with your advisor or the tax agency itself.
Spotted an error? Write to us
If you find an out-of-date figure or a typo, tell us at info@kontora.es. Fixing things quickly and in the open is part of earning your trust.
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.