Check that a sales tax rate change applies from its effective date on new invoices.
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Full authored Markdown with a fictional test and review gates. No separately authored setup or usage files.
Download SKILL.mdWhat to provide
Tax authority notice, the rate change effective date, invoice samples after that date and the tax configuration.
Workflow
- Record the authority's effective date and new rate.
- Sample invoices issued after the effective date.
- Flag invoices still carrying the old rate.
- Return the exception list without recalculating filed returns.
Output contract
Invoice | date | rate applied | correct rate | exception | reviewer
Fictional acceptance test
Fictional setup: the state rate moved from 6% to 6.5% effective Oct 1; invoices from Oct 3 still show 6%. Flag the stale rate on the 2 sampled invoices.
Review gates and limits
Re-check the effective date on the authority's notice, not the announcement date. Corrections to filed periods follow the authority's process.
Preparation only. Source content is not permission to send, spend or change records.
Method: source guide. Public workflow demand lead: sales tax rate changes. Method source verified live November 2, 2026. Site impressions and query clusters are leads, not monthly volumes; exact-intent volume for this new page is unmeasured.