What changed, and when

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The Advisor plan.

• Advisor, for people who run the numbers for clients: everything in Personal, plus your own name, contact line and disclaimer on PDF reports and on the pages your private links open.
• Scenarios can be grouped by client, with one PDF for all of a client's calculations.
• One embed token per website, each with its own colour, credit choice and hosted figures.
• Priority support for Advisor accounts, and a one-click move between Personal and Advisor on the same subscription.

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Share links, hosted embed figures, change log, oEmbed.

• Every calculator page has "Copy link to this result": the link reopens the page with your figures, with nothing stored on our side.
• Every calculator page says when its worked examples were last re-run.
• Personal subscribers can keep the starting figures and fixed fields of an embedded calculator on their account, so a change made once reaches every page that embeds it.
• This change log, and an oEmbed endpoint so editors that support it can embed a calculator from its address.

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Embeds as a first-class feature.

• The embed code now places a small "Calculator by CalculatorFox" line in the host page, which also works as a link if the frame cannot load.
• Embed frames are versioned at /embed/v1/<name>; the older /embed/<name> address stays as a permanent alias.
• New embed builder at /embed: pick a calculator, set your own figures, fix fields, copy three lines of code, see a live preview.
• Pages that use dated reference tables (tax, limits, guidelines) say which table and when it was last checked.
• Search understands common phrases ("take home pay"), forgives typos, and shows popular calculators before you type.
• A written commitment that calculator addresses are permanent, at /permanent-urls.

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Smaller logo, guidance for AI assistants.

• Header logo served as a 5 KB WebP image.
• /llms.txt describes the library for AI assistants; /ads.txt published.

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Payments live.

• Personal subscriptions are handled by Stripe, which acts as merchant of record and charges the applicable tax.
• Refunds and cancellation follow the published policies; account emails come from support@calculatorfox.org.

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2026 reference data.

• US federal and all 51 state income tax tables, sales tax, lottery and bonus withholding updated for 2026.
• UK 2026/27 income tax, National Insurance and Stamp Duty Land Tax tables; Canada 2026 federal and Ontario tables.
• 178 display currencies; exchange rates refreshed each business day from the European Central Bank.

Reference tables

The dated tables the calculators read, the year they cover and when each was last checked against its source. Every calculator's worked examples are re-run on every release.