Homework: Tax Bracket Calculator

作业: 阶梯税率计算器

≈ 35 min · python-conditionals · Open in WolfCode

Combines every Chapter 2 skill in a problem you'd actually solve at a job. Marginal tax brackets — same shape as shipping tiers, volume discounts, and any tiered pricing.

The brackets (simplified 2024 single-filer)

$0 – $11,600 → 10%
$11,600 – $47,150 → 12%
$47,150 – $100,525 → 22%
$100,525 – $191,950 → 24%
above $191,950 → 32%

Worked trace — income = $25,000

First $11,600 at 10% → $1,160.00
Remaining $13,400 at 12% → $1,608.00
Total: $2,768.00

Pattern: start from the prior buckets, then add the partial

Sketch of the pattern (not the full solution)

def income_tax(income):
    if income <= 11_600:
        total = income * 0.10
    elif income <= 47_150:
        # First bracket fully consumed (1160) + 12% of the rest in this bracket
        total = 1_160 + (income - 11_600) * 0.12
    elif income <= 100_525:
        # Add the next full bracket and the partial 22% one
        total = 1_160 + 35_550 * 0.12 + (income - 47_150) * 0.22
    # ... continue for the 24% and 32% brackets ...
    else:
        total = 0  # replace with your formula
    return round(total, 2)

print(f"${income_tax(25_000):,.2f}")    # → 2768.00

Loading Python runtime (~5 MB, one-time)…

Acceptance criteria

All 8 tests pass (target ≥ 7/8 per tests_pass_required)
income_tax(...) returns a float
All values rounded to 2 decimal places (round(total, 2))
No loops, no extra imports, no extra functions — Ch. 2 toolset only

If you find yourself wanting the full answer…

Re-do the BMI Category exercise. This homework is structurally the same problem with extra brackets and arithmetic. The "wanting the answer" feeling is a signal to slow down and re-engage with the simpler version.