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Editorial standards · Updated 2 September 2026

How this site is written and checked

Five hundred pages of financial information from a registered adviser. Here is who writes them, where the numbers come from, what gets tested, and what the law says we may not do.

In one paragraph

Every page is published under the name of the firm's registered adviser and reviewed by him before it goes live. Every statutory figure is taken from a primary source — an IRS notice, a section of the Code, an SSA publication, a pension system's own documents — and re-verified each January. The calculators run automated tests against hand-worked examples. Drafts are produced with AI writing tools; nothing is published without a person checking each figure and the adviser reading the page. The site carries no testimonials because California law forbids them for a state-registered adviser.

Who writes it

Pages carry a byline and a date. The byline is Alfonso Aduna, the firm's registered investment adviser representative, who reviews every page before publication and is responsible for it. The firm's marketing is run by Joaquin Aduna. No one outside the firm writes for the site and nothing here is sponsored, syndicated or paid for.

How AI is used, and why we say so

Drafts are produced with the help of AI writing tools, working from sources and instructions we supply. That is how five hundred pages exist. What the tools do not do is decide what is true: each figure is checked against its source by a person, each page is read by the adviser before it is published, and anything we could not confirm is marked on the page as an open item rather than guessed. We say this because it is true and because you should be able to know how the thing you are reading was made.

Where the numbers come from

Where a figure sits on a page, its source sits with it. Where we have not yet confirmed something, the page shows an amber open-item marker in place of a number. We would rather show the gap than fill it.

How the calculators are checked

Each of the fifteen calculators is a pure calculation with the assumptions printed on screen. The calculation engines are tested automatically — more than a hundred tests, with expected values worked by hand from the statute or the IRS table, not copied from the calculator — and every change is compared against the previous version's output before it ships. The 2026 statutory constants inside them are asserted by the tests, so a wrong edit fails before it publishes. Calculators are illustrations at your assumptions, not forecasts, and each one says so.

Dates and updates

Every page shows a "last updated" date. It moves only when the content changes, not on a schedule and not to look fresh. Annually-indexed figures are re-verified each January; the pages that carry them are marked for that review.

What you will not find here

Corrections

If a figure is wrong, tell us: (657) 571-2607 or the address on the contact page. Corrections are made on the page, the date moves, and material ones are noted at the foot of the page. support@adunacapital.com

Aduna Capital LLC is a California DFPI-registered investment adviser (CRD #311270). Information on this site is educational and general; it is not individualised investment, legal or tax advice, and reading it does not create an advisory relationship. Aduna Capital LLC is not affiliated with, endorsed by, or sponsored by CalSavers, the California State Treasurer's Office, CalPERS, CalSTRS, or any other retirement system, employer or school district named on this page.