Luma Payroll Gym
Rules Report
← Heatmap / MiMo V2.6 Pro · Task 40
MiMo V2.6 Pro · Single-turn · Task 40 (Calculation, wage cap binds) Mean 100.0%
Field Expected Rollout #1 (100%) Rollout #2 (100%) Rollout #3 (100%)
decision calculate calculate calculate calculate
currency LCR LCR LCR LCR
gross pay 9539.93 9539.93 9539.93 9539.93
employee contribution 200.00 200.00 200.00 200.00
allowed deduction 123.64 123.64 123.64 123.64
taxable pay 9216.29 9216.29 9216.29 9216.29
income tax 1435.26 1435.26 1435.26 1435.26
net pay 7781.03 7781.03 7781.03 7781.03
clauses R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6 R1 R2 R3 R4 R5 R6
Prompt 
Process this monthly payroll record under the supplied rulebook. Return the R6 or R7 JSON answer.
Source documents: {"087f1008f556d1d3-payroll": {"kind": "payroll", "record": {"gross_pay": "9539.93", "payroll_month": "2026-08", "allowed_deduction": "123.64"}}}
Authoritative case reference schedule: {"first-half": {"rate": "0.06", "cap": "4000.00", "deduction": "400.00", "free": "1200.00", "upper": "3300.00", "middle_rate": "0.12", "upper_rate": "0.20"}, "second-half": {"rate": "0.04", "cap": "5000.00", "deduction": "400.00", "free": "1000.00", "upper": "3600.00", "middle_rate": "0.12", "upper_rate": "0.20"}}
Rollouts
Rollout #1 100.0% passed · 8.8s · $0.0006
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 100.0% R1 R2 R3 R4 R5 R6
field accuracy 100.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "9539.93",
  "employee_contribution": "200.00",
  "allowed_deduction": "123.64",
  "taxable_pay": "9216.29",
  "income_tax": "1435.26",
  "net_pay": "7781.03",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}
Reasoning 
Gross 9539.93, month 2026-08 -> second-half: rate 0.04, cap 5000, deduction 400, free 1000, upper 3600, middle 0.12, upper_rate 0.20.

Contribution = 0.04 * min(9539.93, 5000) = 0.04*5000 = 200.00.

Allowed deduction 123.64 <= 400 and <= gross - contribution = 9339.93. OK.

Taxable = 9539.93 - 200 - 123.64 = 9216.29.

Tax: free 1000 untaxed. Portion 1000-3600 = 2600 * 0.12 = 312.00. Portion above 3600 = 9216.29 - 3600 = 5616.29 * 0.20 = 1123.258. Total = 312 + 1123.258 = 1435.258 -> 1435.26.

Net = 9539.93 - 200 - 123.64 - 1435.26 = 7781.03.

Check: 9539.93 - 200 = 9339.93; -123.64 = 9216.29; -1435.26 = 7781.03. Yes.

Clauses: R1-R6.
Rollout #2 100.0% passed · 10.7s · $0.0006
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 100.0% R1 R2 R3 R4 R5 R6
field accuracy 100.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "9539.93",
  "employee_contribution": "200.00",
  "allowed_deduction": "123.64",
  "taxable_pay": "9216.29",
  "income_tax": "1435.26",
  "net_pay": "7781.03",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}
Reasoning 
Payroll month 2026-08 → second-half row: rate 0.04, cap 5000.00, deduction cap 400.00, free 1000.00, upper 3600.00, middle 0.12, upper 0.20.

gross_pay 9539.93contribution = 0.04 * min(9539.93, 5000) = 0.04*5000 = 200.00
allowed_deduction 123.64 ≤ 400.00, and ≤ gross - contribution = 9339.93. OK.
taxable = 9539.93 - 200.00 - 123.64 = 9216.29
tax: free 1000.00 untaxed. 1000→3600: 2600 * 0.12 = 312.00. Above 3600: 9216.29 - 3600 = 5616.29 * 0.20 = 1123.258. Sum = 1435.258 →1435.26 (round half up).
net = 9539.93 - 200.00 - 123.64 - 1435.26 = 7781.03
Check: 9539.93 - 200 = 9339.93; -123.64 = 9216.29; -1435.26 = 7781.03. Yes.

Clauses: R1-R6, plus R9? No amendment needed. So R1,R2,R3,R4,R5,R6. Also R1 reference schedule override — cited in R1.
Rollout #3 100.0% passed · 7.6s · $0.0006
ComponentScoreClauses
decision 100.0% R1 R2 R3 R4 R5 R6
exact 100.0% R1 R2 R3 R4 R5 R6
field accuracy 100.0% R1 R2 R3 R4 R5 R6
citations 100.0% R1 R2 R3 R4 R5 R6
Assistant
{
  "decision": "calculate",
  "currency": "LCR",
  "gross_pay": "9539.93",
  "employee_contribution": "200.00",
  "allowed_deduction": "123.64",
  "taxable_pay": "9216.29",
  "income_tax": "1435.26",
  "net_pay": "7781.03",
  "clauses": ["R1", "R2", "R3", "R4", "R5", "R6"]
}
Reasoning 
Second-half row: rate 0.04, cap 5000, deduction cap 400, free 1000, upper 3600, middle 0.12, upper 0.20.

Contribution = 0.04 * min(9539.93, 5000) = 0.04*5000 = 200.00.
Allowed deduction 123.64 ≤ 400 and ≤ 9539.93-200 = 9339.93. OK.
Taxable = 9539.93 - 200 - 123.64 = 9216.29.
Tax: first 1000 untaxed. 1000 to 3600: 2600 * 0.12 = 312.00. Above 3600: 9216.29 - 3600 = 5616.29 * 0.20 = 1123.258. Sum = 1435.258 → 1435.26.
Net = 9539.93 - 200 - 123.64 - 1435.26 = 7781.03.

Check: 9539.93 - 200 = 9339.93; -123.64 = 9216.29; -1435.26 = 7781.03. ✓