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Think TN Foundation
An independent Tamil Nadu policy institution

Every figure on this website carries a tag, a date and a source. Including the ones about us.

We are new. That means we cannot ask to be trusted on reputation, so we do the other thing: we publish the working, we publish the corrections, and we publish who pays for it.

₹4.62 lakh crore

Traced MoU value, announced to drawdown

[C]as at 18 August 2026

₹71.40

Retained per ₹100 of state-origin income

[B]as at 31 July 2026

48.3%

Class V pupils reading a Class II text

[A]as at 30 June 2026

6

Corrections published this year · median 6 days to fix

[A]as at 18 August 2026

The institution, in five motions

Everything we do turns on evidence. Pick a dial.

The tag standard

Three tags. No fourth. An estimate never becomes a fact by repetition.

[A]
Verified against a primary source.
[B]
An organisation's own claim, reported as such.
[C]
An estimate, including our own arithmetic.
The lead tracker

MoU Tracker

All three trackers

₹4.62 lakh crore

[C]as at 18 August 2026Announced-to-deployed discount applied: 60–80%

Source: Guidance Tamil Nadu releases; company filings; MCA charge data

Show the arithmetic +

traced = Σ(announced_value × signature_flag × drawdown_evidence_weight), where drawdown_evidence_weight ∈ {0, 0.4, 0.8, 1.0} by evidence class. The published headline is the traced sum, not the announced sum.

Tag census, this release

[A]34%[B]41%[C]25%
0481216202120222023202420252026₹ lakh crore
AnnouncedTraced to signatureTraced to drawdownUnit: ₹ lakh crore
The corrections log

We were wrong 6 times this year. Here is each one, dated.

  • 16 August 2026

    Material

    MoU Tracker v1.3 → v1.4

    Two MoUs from the same counterparty, announced eleven months apart, were counted separately. The second superseded the first.

    The superseded MoU is excluded. The traced total falls by ₹18,400 crore.

    Found by R. Sundaramoorthy, external reader

  • 4 August 2026

    Material

    The announced-to-deployed discount v1.0 → v1.1

    The worked example applied the discount to a nominal figure and compared it to a real one.

    Both sides of the comparison are nominal, and the deflator used is stated.

    Found by Internal review

  • 29 July 2026

    Material

    TN Retained Income series v2.0 → v2.1

    FY24 was described as audited. It was provisional at the time of publication.

    FY24 is marked provisional and the tag is corrected from [A] to [B].

    Found by Anonymous, by email

News

Latest from the institution

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  • 16 August 2026Release

    MoU Tracker v1.4 published, with a material correction

    An external reader found a double-counted MoU. The traced total falls by ₹18,400 crore. The correction is logged with their name, with consent.

  • 14 August 2026Publication

    Eighteen institutions, four disclosures

    Most Indian policy institutions publish nothing about their funding. We checked, and we published our own figures on the same page.

  • 6 August 2026Convening

    Closed roundtable on devolution arithmetic, Chennai

    Fourteen participants, no press, no photography, and a published note of what was discussed with nothing attributed.

  • 24 July 2026Governance

    First independence register published: three approaches recorded

    Three approaches to review or delay a finding were recorded this year. None succeeded. A year with none would mean nobody was recording them.

Check us

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Every tracker ships its formula, its sources and its retrieval dates. If you find an error, it goes in the log with your name on it, with your consent.

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