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Update current CRA family benefits and model benefit-year/family boundaries

Aperta
  • Qualcosa non va?
#557 0 commenti 0 reazioni 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
5/5
Tempo stimato
Più di una settimana
Idoneità per principianti
45/100
Tipo di issue
Funzionalità
Chiarezza
Abbastanza chiara
Stato di attività
Tranquilla
Stack tecnologico
python
Ambito
backend

Direzione di ricerca

No files or test paths are named. Start by locating the existing CRA benefit parameter definitions and period/entity tests, then consult the linked CRA guidance. Done means updated metadata and parameters, benefit-year evaluation, zero-income handling, and tests for age bands, reductions, and multiple tax families.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

enhancement

Problem

PolicyEngine Canada's parameters for several CRA-administered family benefits
stop in older benefit years. Current July 2026 to June 2027 calculations cannot
be compared reliably with the engine:

  • Canada Child Benefit
  • Child Disability Benefit
  • Ontario Sales Tax Credit
  • Nova Scotia Affordable Living Tax Credit

There are also two output-contract differences that parameter updates alone do
not resolve:

  • CRA publishes these benefits for a July-to-June benefit year using prior-tax-
    year adjusted family net income, while PolicyEngine variables use a generic
    calendar-year period.
  • CRA calculations apply to a tax family, while PolicyEngine Canada's benefit
    variables use its co-resident Household entity.

Scope

  • Update amounts, thresholds, and reduction rates through the July 2026 to June
    2027 benefit year.
  • Define how the July-to-June benefit year is requested and represented.
  • Audit whether the existing household entity can represent the CRA tax-family
    boundary; introduce or derive the appropriate unit if it cannot.
  • Floor adjusted family net income at zero where the CRA formula requires it.

Acceptance criteria

  • Parameter metadata cites current CRA guidance and records the applicable
    benefit year.
  • Tests cover children in both CCB age bands, CDB phaseout, and the Ontario and
    Nova Scotia credit reductions.
  • Tests include a negative adjusted-family-net-income case.
  • Tests include a co-resident household containing more than one tax family and
    show that benefits are allocated to the correct family.
  • Outputs can be evaluated for the July 2026 to June 2027 benefit year without
    treating it as an undifferentiated calendar year.

Official sources:

Lingua principale
Python
Stelle
17
Fork
35
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  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

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