FA-59204 / Payroll withholding rules / Member archive

Multi-state wage allocation by work days: remainder ranking · case 04

Leftover cents go to the states with the most days instead of the largest fractional shares.

Member previewVariant 4 · 3 implementations · 10 checks per implementation

Case contract

Input {wage, days: {state: work days}, resident}. With zero total days all wages go to the resident state. Otherwise each state gets floor(wage*days/total); leftover cents go one each to states ranked by largest fractional remainder, ties by the base order (days descending, then state name). States allocated 0 cents are omitted. Return {state: cents}.

Why this case matters

State wage allocation must sum exactly to the paycheck with a deterministic remainder rule.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression 0	`{"NJ": 729888, "PA": 72988}`	`{"NJ": 729887, "PA": 72989}`	Failed

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