STORMARCStage 1 demo · engine-generated

Sam's first paycheck, decomposed honestly.

This is one screen of StormArc's Stage-1 module — “I just got my first job; how do I get smart with my money?” — running on the real stormarc engine (v0, 31/31 golden tests) with verified 2026 tax law. Sam is a fictional demo persona; every number below was computed, not typed.

Sam · 22 · single $65,000 salary · Kansas 401(k): 4% + full 4% match Saved: $500 Card $3,000 @ 24% · loans $18,000 @ 5.5%
Take-home
$4,030/mo
$2,015.02 per paycheck
Effective tax rate
19.4%
all taxes ÷ gross
Marginal (next $)
24.5%
fed + KS + FICA, after deferral
Monthly surplus
$940
yours to point somewhere
Match captured
$2,600/yr
free money, fully claimed
1 · Where the paycheck goes

$65,000 gross → $48,360.58 take-home

Every dollar between gross and net is named below — nothing is a mystery deduction. Bars are proportional to gross.

Still your money (moved, not lost) Taxes (gone, but knowable)
LineAnnualPer check
Employer 401(k) match
Free money on top of salary — never shows up in take-home, but it's real compensation.
+2,600.00+108.33
Traditional 401(k) — 4%
Skips income tax now (not FICA); still yours, just future-you's.
−2,600.00−108.33
Health premium (pre-tax)
§125 premiums skip income tax and FICA — insurance bought with untaxed dollars.
−1,440.00−60.00
Federal income tax
Brackets tax only the dollars inside them, on $44,860 taxable.
Show the bracket walk
10% on first $12,400$1,240.00
12% on next $32,460$3,895.20
22% bracketnever reached
−5,135.20−213.97
Social Security
6.2% up to the $184,500 cap. 401(k) money does not escape this one.
−3,940.72−164.20
Medicare
1.45% of every wage dollar, no cap.
−921.62−38.40
Kansas state income tax
KS taxes federal AGI minus its own $3,605 deduction and $9,160 exemption.
Show the bracket walk
5.20% on first $23,000$1,196.00
5.58% on next $25,195$1,405.88
−2,601.88−108.41
Net take-home
What actually hits the bank. Every dollar of the gap is accounted for above.
48,360.582,015.02
Gross vs. Net: where your paycheck actually goes linked from: paycheck breakdown

You accepted a $65,000 job. Then the first deposit hit and it was… about $2,000 per paycheck. Nobody stole anything. Both numbers are real — they're just answers to different questions.

Gross is what your employer pays for you. Net is what lands in your account. The gap isn't one mystery deduction; it's five specific ones, and you can name every dollar.

Three things worth noticing in the table above:

  1. The 401(k) line isn't a loss. It's your money, moved to an account with your name on it. Real deductions are only the taxes and the premium.
  2. Total taxes here are about 19% of gross — not the "22% bracket" you may have heard. (That confusion has its own lesson, below.)
  3. Social Security + Medicare is flat: 7.65% on basically every dollar. At this salary it rivals your federal income tax.

Your pay stub lists all of this already. Most people never read it. Reading yours once, line by line, puts you ahead of most of the people who trained you.

The question to ask: "Can I name every line between my gross and my net — and which ones are taxes versus money that's still mine?" If any line on your stub is a mystery, that line is the homework.

Takeaway: the gap between gross and net isn't a shock — it's five knowable lines, and one of them is you paying yourself.

Marginal vs. Effective: the tax-bracket myth linked from: the two rate tiles

Someone in your life has said it: "Careful — that raise could bump you into a higher bracket and you'll actually take home less." It sounds street-smart. It's wrong, and the math takes one minute.

Brackets work like a staircase, not a cliff. Moving into the 22% bracket doesn't tax all your income at 22% — only the dollars above the line.

A $5,000 raise, single filer, 2026

At $65,000, taxable income (after the $16,100 standard deduction) is $48,900 — all of it lands in the 10% and 12% steps. Federal tax: $5,620. Get a raise to $70,000 and taxable income is $53,900, crossing into the 22% bracket at $50,400:

First $12,400 at 10%same as before
Next $38,000 at 12%same as before
Last $3,500 at 22%the only new thing

New federal tax: $6,570. You paid $950 more on $5,000 more income — you keep $4,050 of the raise. A raise cannot make you poorer. (The rare real cliffs live in benefit programs, not income-tax brackets.)

Marginal rate = tax on your next dollar (the decision-making number). Effective rate = your average ($6,570 ÷ $70,000 = 9.4% — just the receipt). Every future choice — Roth vs. traditional, chasing a deduction, whether overtime is "worth it" (it is) — turns on the marginal rate.

One more thing worth clocking at 22: your 12% marginal rate is close to the lowest it will ever be while you're working. That fact quietly decides the Roth question.

The question to ask: "What's my marginal rate right now?" — the price tag on your next dollar earned, deducted, or converted. If you can answer it, half of tax planning is just arithmetic.

Takeaway: brackets are a staircase — a raise only ever taxes the new dollars at the new rate, so more gross is always more net.

2 · Money in, money out

$4,030 in → $940 gets a purpose

Sam takes home $4,030/mo; $2,800 goes to living expenses and $290 to required debt minimums, leaving $940/mo to point somewhere on purpose.

Essentials $2,800 Debt minimums $290 Surplus $940
3 · The next-dollar waterfall

Where should the $940 go?

Seven rungs, filled top to bottom, each with its reasoning shown. This is a recommendation with its work attached — you decide, you implement.

Your next dollar goes to: attack the 24% credit card — all $940.05/mo of surplus starts there.
1Capture the full employer 401(k) match✓ Satisfied$0/mo

Already captured: Sam defers 4.0%, which claims the full 4.0% match — $2,600/yr of free money is coming in.

Show the ticket
Assumptions
  • Match modeled as vested; a long vesting schedule you won't finish reduces its value.
  • Deferral dollars are pre-tax, so take-home drops by less than the deferral itself.
What would change my mind
If you were certain to leave before any of the match vests, the guaranteed-return argument weakens and rung 2 could jump ahead.
2Attack high-interest debt (APR ≥ 8%)◐ In progress$940/mo

Every extra dollar at the credit card (24% APR, $3,000 balance) earns a guaranteed 24% — tax-free and risk-free. No investment reliably beats that. Highest APR first (avalanche): it's the cheapest math, and minimums on everything else are already covered in the budget.

Show the ticket
Allocation
credit card — $940.05/mo (payoff in roughly 3–4 months at this pace)
Assumptions
  • Minimum payments are already counted as mandatory outflow — these dollars are extra principal.
  • Avalanche assumed; snowball trades a little math for momentum if you need the wins.
What would change my mind
If the APR fell below 8% — a 0% balance transfer or a payoff — this rung releases its dollars down the waterfall.
3Starter emergency fund (1 month of essentials)○ Waiting$0/mo

One month of essentials is $2,800; Sam has $500. Until that floor exists, any surprise — a tire, an ER copay — lands on a credit card and becomes rung-2 debt.

Show the ticket
Assumptions
  • Essentials = the monthly cost of survival reported ($2,800/mo).
  • Keep it boring: high-yield savings, not invested.
What would change my mind
Highly variable income (commission, gig work) argues for a bigger starter fund before touching retirement rungs.
4Roth IRA○ Waiting$0/mo

At $63,700 MAGI Sam is likely in the lowest tax bracket of his career — Roth means paying today's LOW rate once, then decades of growth and every retirement withdrawal tax-free. $1,250/mo would fill the remaining $7,500 of 2026 room.

Show the ticket
Assumptions
  • 2026 IRA limit $7,500; $0 contributed this year.
  • Remaining room spread over the 6 remaining months.
What would change my mind
If income (and bracket) were unusually HIGH now versus expected retirement, traditional could beat Roth — the young-and-low-bracket logic runs the other way.
5Full emergency fund (6 months of essentials)○ Waiting$0/mo

Job-loss insurance you sell yourself: 6 months of essentials is $16,800. It's what makes every later investment safe to leave alone in a bad year.

Show the ticket
Assumptions
  • v0 targets the conservative end (6 months) of the standard 3–6 month range; it's a config knob.
  • High-yield savings; this money's job is existing, not growing.
What would change my mind
Two stable household incomes or very secure employment argues for 3–4 months; volatile income argues for more.
6Max the 401(k)○ Waiting$0/mo

$23,200 of unused 2026 401(k) space remains ($24,500 limit). Tax-advantaged room expires every December 31 — use it or lose it.

Show the ticket
Assumptions
  • Deferral dollars are pre-tax: each $100 in costs less than $100 of take-home at the marginal rate.
  • Assumes reasonable plan fund fees; a terrible menu weakens this rung (never the match rung).
What would change my mind
Extreme plan fees could let cheap taxable index funds overtake this rung — check the expense ratios.
7Taxable brokerage investing✓ Clear$0/mo

Nothing reaches this rung this month — the earlier rungs consumed the surplus, which is exactly what the waterfall is for.

Show the ticket
Assumptions
  • Broad, boring, low-cost index funds are the default assumption.
What would change my mind
A near-term goal (house down payment inside ~5 years) belongs in cash-like savings, not the market — timeline changes the vehicle.

Recommend-only: nothing here moves money — you decide and you implement. Dollar limits and phase-outs are 2026 law from the engine's verified constants file.

The Next-Dollar Waterfall: where every extra dollar goes linked from: this panel

"What should I do with extra money?" feels like it needs a financial advisor. It doesn't. There's a well-worn order of operations, and it exists for one reason: each step's math beats the step below it. Fill from the top.

Why this exact order? Read the returns downhill: ~100% match → 24% guaranteed → the option that protects both → tax-free growth → safety completion → tax-deferred growth → taxed growth. Every step dominates its successor. That's the whole theory.

Worked example: $500/month extra at a $65k job. Step 1: $217/mo captures the full 4% match. The remaining $283/mo kills a $3,000 card at 24% (~12 months), then builds the $2,800 starter fund (~10 months), then flows into the Roth. Under two years from "no plan" to "funding a Roth IRA monthly" — on $500 a month.

Honest footnotes: some people build the starter fund before attacking debt (steps 2↔3) for sleep-at-night reasons — defensible. A genuinely low-rate debt (under ~5%) can wait at step 7's priority. The skeleton holds either way.

The question to ask: "Which step of the waterfall am I on right now?" Every extra dollar — raise, refund, side gig — has the same answer until that step is full. You never have to re-decide.

Takeaway: one decided order, filled top to bottom, replaces a decade of "what should I do with this?" — this is the map for the next ten years.

Stage 1 · The rest of the syllabus

Five more lessons, each one page

Written alongside the engine — every lesson attaches to a live number on this dashboard.

Your W-4 and the refund myth
A $3,000 refund is a $250/mo interest-free loan you made the government.
The 401(k) match
$2,600/yr of free money compounds to ~$640k by 65 (illustrative 7%). Skipping it is a pay cut.
Roth vs. Traditional
At equal tax rates they tie to the dollar — so the whole decision is "rate now vs. rate later."
The emergency fund
Why it comes before investing, and why it lives in savings, not stocks.
The real cost of debt
A $35k car at 9% for 72 months costs $45,424. Now decide with that number.