What was built, and what was wrong with it.

Every dataset the site is built on is now served as open JSON under /api/v1 — CC BY 4.0, CORS open, no key. Added 1080×1350 share cards sized for WhatsApp rather than a landscape OG card that gets letterboxed in a chat, an llms.txt and sitemap generated from one shared page list so they cannot drift, and a daily budget question.

You can now submit a budget. The median stays hidden until 200 real people have written one — below that the API returns an empty result and the page shows the true count, including zero. No IP is stored: the only identifier is a salted daily hash, and without a salt the endpoint fails closed rather than pretending.

₹1,31,114 crore across 12 schemes was budgeted for 2025-26 and revised away in the same year. Jal Jeevan Mission went from ₹67,000 crore to ₹17,000 crore. Framed as budgeted-vs-revised rather than a verdict — a revised estimate can mean re-phasing or delay, not only a broken promise.

• A version number in a scheme name — "POSHAN 2.0" — was being parsed as that row's first data value, silently shifting every column by one. Figures in these tables are right-aligned, so the extractor now requires two-plus spaces before a number.

Every state's share of the ₹15,26,255 crore devolution, taken from the Sixteenth Finance Commission's own report rather than a news summary. The map is a cartogram, not a choropleth: a coloured map of India sizes states by land, and land is not people. Added a Centre / State / Combined toggle, because Union health spending quoted alone understates what governments spend by roughly ten times.

• Per-capita devolution was computed from the unrounded amount but displayed next to the rounded one, so anyone checking the arithmetic on Arunachal, Meghalaya or Goa would have found it wrong.
• The Finance Commission formula weights parsed to 182.5% — the extractor grabbed the "Total" row as a criterion and missed "Population (2011)" because the label pattern disallowed digits.

Only 6.68% of Indians file an income tax return and most of those owe nothing, so a calculator built on income tax speaks to under 2% of the country. This one estimates what anyone puts in — income tax plus the Centre's half of GST plus fuel excise — as a range, never a single confident number. The methodology page was written before the calculator.

The board is the homepage: no hero, no nav, you land on ₹53,47,315 crore and a decision. The committed 46% is shown first and locked, because that is the lesson. Overspend and the meter shows the deficit rising and next year's interest growing — permanently.

• The sticky meter pinned to the viewport for the whole section and covered the heading beneath it.
• A narrow-phone media block sat above the rule it was meant to override, so it lost the cascade and the mobile layout silently did nothing.
• Share links did not restore when pasted into an already-open tab, because the restore only ran on mount.

Budget data is versioned JSON in the repository rather than a database, so every figure is diffable and provenance is a build artifact. The figures are transcribed by hand and then cross-checked against an independent extraction of the same PDF, so a mistyped digit fails the build instead of shipping.

• The plan used a 1.45 billion population. The World Bank series ends at 2024, so a 2026-27 budget needs the 2026 projection — which moves spending per person from ₹100.97 to ₹99.28 a day.
• Gross tax revenue minus devolution does not equal net tax revenue; there is a ₹10,909 crore gap for cost of collection. Presenting it as a subtraction would have been wrong.

• The income tax slabs come from a secondary source and have not been checked against the Finance Act itself. Flagged as unverified in sources.
• Fuel excise moves far more often than the budget does. The figure carries an “as of” date and needs re-checking against PPAC regularly.
• Per-state figures divide by the 2011 Census, because India has had no census since. They are per 2011 person.
• The crowd median has no crowd yet. It stays hidden until 200 real people have written a budget, and it will not be seeded.