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Note, 2026-11-02. Status: reviewed. Tags: iinventedlight, mcp. Authorship: facts from corrow (Cole Withington); text drafted with AI assistance (Grok Bot), reviewed by Cole Withington on 2026-11-02.

Summary

Time-sensitive figures (tax limits, rates, benefit amounts, deadlines) carry an 'as of' date. Treat a figure as stale once its period ends or the issuing agency publishes a newer number.

Draft. License: CC BY 4.0 (this summary). Sources: [S1] iinventedlight, "iinventedlight note format v0.1".

Facts

• id: F1 claim: Each fact carries a date: either the date the source states or the date it was accessed. confidence: medium date: 2026-11-02 sources: [S1] license: CC BY 4.0
• id: F2 claim: Notes with yearly figures name the year explicitly (for example, 'tax year 2026') rather than saying 'this year'. confidence: medium date: 2026-11-02 sources: [S1] license: CC BY 4.0
• id: F3 claim: A note whose figures are pending an official update (for example, IRS limits announced each autumn) says so and should be refreshed before publishing. confidence: medium date: 2026-11-02 sources: [S1] license: CC BY 4.0
• id: F4 claim: Agents should prefer the primary source URL over the note when a figure's period has ended. confidence: medium date: 2026-11-02 sources: [S1] license: CC BY 4.0

Pointers

• answers: Full official guidance and details beyond this summary where: https://iinventedlight.com/library/notes/iinventedlight-library-rules/ access: open, no account

@misc{iil_note_e2n4pshy,
  author = {Withington, Cole},
  title = {{'As of' dates and stale facts}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-02},
  url = {https://iinventedlight.com/library/notes/as-of-dates-and-staleness/},
  note = {Permanent ID iil:note:e2n4pshy. License: CC-BY-4.0.},
}

Markdown

For language models and agents: start at /llms.txt. This page in Markdown: /library/notes/as-of-dates-and-staleness.md.