About us

Why this exists

We started by checking what the existing tax calculators actually said. Sites ranking on the first page of Google for "2026 income tax calculator" were serving the previous year's standard deduction — $15,200 single instead of $16,100 — while linking to the correct IRS page from the same screen.

Then we checked the state data everyone uses, one state at a time, against each state's own department of revenue. Of 37 states reviewed, 12 carried a wrong rate, threshold or credit. One error overstated an Ohio bill by 43%.

The arithmetic in this category is not hard and almost nobody gets it wrong. What goes wrong is the data going in, and there is normally no way for a reader to tell — because almost nothing published carries a date or a source.

So this site is built around one commitment: every figure names the document it came from and the date it was checked, and where something has not been verified against a primary source the page says so instead of implying it has.

That is the whole proposition. Not better arithmetic — verifiable arithmetic, over data you can check without taking anyone's word for it.

What is here

Federal income tax and FICA for 2026, from the IRS revenue procedure itself. Income tax for all 50 states and the District of Columbia, each read off that state's own publication.

Local income tax, which is the layer almost nothing models: 3,672 jurisdictions across 7 states, from every Pennsylvania municipality and every Ohio municipality and school district to New York City's statutory brackets.

Property tax for all 3,143 US counties, as effective rates computed from tax actually paid over median home value — the only property figure comparable across state lines.

And specialist calculators where folding a case into a general tool would produce something subtly wrong: self-employment, retirement, rental income, capital gains, the refundable credits and withholding.

The two halves are linked deliberately. Income tax and property tax are set by different authorities and states trade one against the other, so comparing either alone regularly gives the opposite of the right answer.

How this is funded, stated plainly

Advertising on the site, and a paid API for businesses that need tax calculation inside their own products. That is all of it.

We do not sell tax filing software, so there is no paid product for a free estimate to funnel you into. We do not operate an adviser network or a lead-generation business, so the figures you enter do not qualify you for an offer. We do not require an account, so there is nothing to build a profile against.

Those absences are the reason the calculator has no incentive to produce any particular number. A free tool attached to a paid product is optimised to be finished; a free tool attached to an adviser network is optimised to identify who is worth referring. This one is optimised to be right, because that is the only thing it has.

We also do not sell or share what you type. The calculation runs in your browser and the figures are not stored against an identity — the privacy page sets out exactly what that means and what the single exception is.

If that changes, this page will say so on the date it changes. A funding model described accurately once and quietly altered later is worse than never having described it.

Who is behind it

estimatetax.net is built and maintained by Pablo Ruiz Quintero, founder — an SEO specialist with a background in finance and economics content, working on financial software intended to make these systems legible to the people subject to them.

Every page carrying tax content has a byline naming who is responsible for it, and a verification date. We do not list reviewers who do not exist: there is no fabricated panel of credentialed experts on this site, because inventing one is the specific dishonesty this category is full of.

If a licensed professional joins the project, the editorial policy page is where that will be documented, with what they review and when they started. Until then, the honest statement is that this is one person's work over verified primary sources, and the verification log is published so you can check it rather than trust it.

estimatetax.net is operated from Spain. We publish the operating jurisdiction rather than a postal address: it is the part that is true and checkable, and a street address that no correspondence is actually read at would add the appearance of substance without the substance.

Written enquiries go to hola@prqdigital.com, and the contact page sets out what each kind of message should include.

Founded in 2026. The tax data changelog records every change made to the underlying figures since, with dates.

What this site will not do

No account required, ever, for the calculators. Nothing on this site needs an email address to produce a number.

No selling your figures. What you enter is not sold, shared or brokered to advisers, lenders or anyone else.

No fabricated authority. No invented reviewers, no credentials nobody holds, no implied endorsement by any tax authority. We are not affiliated with the IRS or any state department of revenue.

No pretending to be complete. Every calculator states what it does not model, under the result rather than in terms of service. Where a case falls outside the engine, the page says so instead of returning a confident number.

No quiet corrections. When a figure here turns out to be wrong, it is corrected and the correction is published with the date. A site that has never announced an error is either very new or not looking.

Questions

Who runs this site?

estimatetax.net is built and maintained by Pablo Ruiz Quintero, founder. Every page with tax content carries a byline and a verification date. There is no fabricated panel of reviewers — if a licensed professional joins, the editorial policy page will document it.

How do you make money?

Advertising, and a paid API for businesses. We do not sell filing software, we do not operate an adviser network, and we do not sell leads or the figures you enter. There is no paid product for the free calculator to funnel you into.

Is this free?

Yes, and with no account. Nothing on this site requires an email address to produce a number. The API for businesses is the only paid part.

Are you affiliated with the IRS?

No. We are not affiliated with the IRS, with any state department of revenue, or with any tax software company. We cite their published documents and link to them, which is the opposite of affiliation.

How do I know your numbers are right?

You do not have to take our word for it, which is the point. Every figure names the document it came from and the date it was checked. Of 37 states checked against their own department of revenue, 12 carried a wrong figure in the compiled sources everyone uses — and the log of what we found is published.

Can I use your calculators on my own site?

Yes, free, through the embed page. The widget carries a visible link back and no hidden tracking. For putting calculation inside a product, the API is documented and the business page is where to ask about it.