wealthschema/archetypes/u-02-low-income-working-family
U-02UnderservedAccumulationlow tax complexity

Low-Income Working Family

Working family below median income, EITC eligible, SNAP/Medicaid, limited savings, paycheck-to-paycheck.

U-02 models the working family below the median household income — banked, employed, and persistently constrained. It is the canonical test corpus for EITC and CTC tax preparation, SNAP/Medicaid eligibility workflows, and the predatory-lending exclusion zone that fair-lending regulators most actively monitor.

Age Range
25–45
Net Worth
$0–$100k
Cohort
Underserved

About this archetype

U-02 exists because the working-poor and lower-middle-income family is the segment where tax credits do the heaviest lifting in the household's annual cash flow, and where benefits-cliff economics most distort financial planning. The EITC (refundable, with the 2024 maximum credit of $7,830 for a household with three qualifying children) and the partially-refundable Child Tax Credit can together represent 10–25% of after-tax household income — meaning the February refund is functionally the household's emergency fund, debt paydown, and security deposit all at once. The benefits cliff is the second-order problem: a small wage increase can trigger losses in SNAP, Medicaid, and Section 8 voucher eligibility that exceed the wage gain. Financial software targeting this segment must model both the refund-as-windfall pattern and the cliff-induced reluctance to accept overtime or a promotion. The corpus is calibrated to surface those exact tax-credit and benefits-eligibility edges.

The cash-flow shape is paycheck-to-paycheck by definition: median gross income of $63,926, p25–p75 of $57k–$72k. Net-worth median of $169,819 is dominated by home equity (14 of 20 homeowners — high for this income band, reflecting low-cost markets and the working-family stability the archetype models). Liquid net worth of $58k median and investable assets of $88k median put nearly all wealth into illiquid forms; the household has the assets-on-paper but lacks the cash buffer that the Federal Reserve's $400-emergency-expense survey repeatedly finds missing. Every household carries credit-card balances, 14 of 20 carry mortgages, and 8 of 20 carry auto loans — typically prime-or-near-prime since the household is banked and employed, distinguishing it from U-01.

What distinguishes U-02 from U-01 (unbanked) and S-02 (post-bankruptcy) is the stability of the banking relationship combined with the persistent income constraint. The U-02 household has been in the system for years, has a credit file, has a job — and is still constrained. That's the fair-lending and benefits-modeling profile that matters: a borrower whose underwriting metrics improve materially when EITC and CTC refunds are recognized as recurring annual income, which most underwriting models do not do. The 55% dependent rate and the family-presence in the household-type field are the structural anchors; this archetype is specifically a family, not a single low-income earner (which sits closer to U-01).

Defining characteristics

  • EITC eligibility
    Income and family-structure place the majority of corpus households inside the EITC phase-in or phase-out band, with refundable-credit dollars representing a significant share of annual cash flow.
  • CTC / Additional CTC eligibility
    With 55% of the corpus carrying dependents, the Child Tax Credit and the partially-refundable Additional CTC apply on most returns, with refund timing concentrated in February–March.
  • SNAP / Medicaid in scope
    Household income and family size place many corpus records inside SNAP and Medicaid eligibility bands; benefits-cliff dynamics affect realistic wage-progression modeling.
  • Paycheck-to-paycheck cash flow
    Liquid net worth of $58k median masks a cash-flow shape where most paychecks are spent within the pay period; the home-equity wealth is not accessible without a HELOC the household cannot reliably qualify for.
  • No emergency fund
    Only 6 of 20 households carry an active Emergency Fund goal — emergency-spending events are typically absorbed via credit card or family loan rather than savings.
  • Predatory-lending risk
    Income band and thin or near-prime credit make the corpus the target market for payday, auto-title, and rent-to-own products; fair-lending and CFPB enforcement compliance teams test exclusion-list and rate-cap logic against this profile.

Corpus signature

n = 20 households

Aggregated across the 20 U-02 households in the shipped v3 corpus corpus. Numbers describe the corpus, not population claims.

Median income
$64k
p25–p75 $57k–$72k
Median net worth
$170k
mean $186k
Liquid net worth
$58k
median
Investable assets
$88k
median
Income distribution
$50k–58k
5
$58k–66k
7
$66k–74k
5
$74k–82k
3
Net-worth distribution
$45k–115k
5
$115k–185k
6
$185k–255k
4
$255k–325k
5
Goals across the corpus
Retirement20 / 20
Education funding11 / 20
Debt payoff8 / 20
Emergency fund6 / 20
Home purchase6 / 20
Liability composition
Credit cards20 / 20
Mortgages14 / 20
Student loans8 / 20
Auto loans8 / 20
  • 14 of 20 (70%) are homeowners; the remainder rent.
  • FL, AR, CA account for 7 of 20 households — 35% of the corpus.
  • Median adult-member age is 37 (range 25–46 across primaries and spouses).
  • 11 of 20 (55%) carry one or more dependents.

Representative household

U-02-seed-12
Sophia P.Married filing jointly·Hartford-East Hartford-Middletown, CT

Sophia (38) and Kyle (34) are a two-healthcare-worker family with three young children (ages 9, 7, 5) on $55,086 combined income — below the corpus p25 and squarely in the three-or-more-qualifying-children EITC maximum band where the refundable credit alone can approach $7,800 plus the partially-refundable CTC across three children. Net worth of $251k is home-equity-heavy against $290k of liabilities, leaving liquid net worth of $94,569 — better than the corpus median but still thin relative to a $1.28M education-funding target and a $1.18M retirement target, both materially off-track. The small $11,994 debt-payoff goal is on-track. This is the canonical EITC-and-CTC-as-cash-flow-event household: a banked, employed, three-child family where the February refund is structurally larger than any single month's surplus, and where benefits-cliff economics on SNAP, Medicaid, and the premium tax credit shape whether a $5k wage bump is actually accretive.

Combined income
$55,086
Net worth
$251,070
Liquid NW
$94,569
Ages
38 / 34
Top goals on this household
Education funding
$1,282,755
Retirement
$1,178,700
Debt payoff
$11,994

Schema fields covered

Every U-02 household ships with — at minimum — these JSON fields populated. The full schema is documented in the data set you purchase.

members[].age
income.combined_gross
net_worth.total
filing_status
longitudinal.monthly[].net_cash_flow
longitudinal.monthly[].savings_rate
stress.scenarios[]
liquidity.months_of_expenses

Who builds against this archetype

Three buyer profiles drive U-02 demand. Tax-software teams — consumer tax-prep platforms and VITA-supporting platforms — use the corpus to validate EITC, CTC, and ACA-premium-tax-credit interaction edge cases, including the disqualifying-investment-income test and the qualifying-child tiebreaker rules under §152(c). State-and-local benefits-enrollment platforms (public-benefits-screening tools and Benefits.gov integrators) test SNAP, Medicaid, CHIP, and Section 8 eligibility logic against the corpus's income-and-family-size grid. Fair-lending compliance teams and CFPB-supervised lenders use it to validate that small-dollar lending products, refund-anticipation loans, and rent-reporting credit-builder tools meet applicable rate caps and do not produce ECOA-prohibited outputs.

Testing scenarios this corpus is calibrated for

  • 01EITC computation testing across the phase-in, plateau, and phase-out segments, including the joint-filing penalty and the §32(c)(2)(B) disqualifying-investment-income threshold.
  • 02Child Tax Credit and Additional CTC refundability calculations, including the §24(h) phase-out and the qualifying-child residency-and-support tests.
  • 03SNAP gross-and-net-income test logic, including the standard deduction, dependent-care deduction, and excess-shelter deduction stack.
  • 04Medicaid MAGI computation under ACA expansion-state and non-expansion-state rules; CHIP eligibility for households whose income overlaps the children-Medicaid boundary.
  • 05Refund-anticipation product disclosure and rate-cap compliance for the fee-based refund-advance products marketed to this customer base.
  • 06Benefits-cliff modeling: simulate a $5k wage increase against the resulting changes in EITC, SNAP, premium tax credit, and Section 8 voucher value.

Edge cases and what's not in this corpus

U-02 is calibrated as the working-and-banked family, not the unbanked or recently-banked household — those are U-01. The corpus also excludes single adults at the same income level without dependents; the family-structure-with-children is a defining axis, and single low-earners belong in F-02 (gig starter), U-01, or B-01 (financial avoider) depending on the diagnostic question. Recent immigrants who happen to be low-income are better served by U-03 where the visa-and-remittance overlay is cleaner. Households that have already received SSDI or LTD and exited the workforce are HC-02, not U-02; this archetype models active employment. Finally, rural-poverty profiles with subsistence-farming or barter income are not modeled — the corpus assumes W-2 wage employment.

Calibration notes

Income bands and family structure were anchored during v3 synthesis to the IRS EITC participation data, the Census ACS public-use microdata on working families below 200% of the federal poverty line, and the USDA SNAP household-characteristics report. The home-equity-heavy net-worth shape reflects the empirical observation that low-cost-of-living states (FL, AR, parts of CA Inland Empire) host the bulk of this income segment's homeowners. Per CLAUDE.md §9, the v3 corpus is frozen and not regenerable; calibration descriptions reflect synthesis intent rather than auditable distribution-fit statistics.

How this differs from related archetypes

Frequently asked questions

What does the U-02 archetype represent?+

U-02 — Low-Income Working Family represents the banked, employed family below the median U.S. household income. The corpus models EITC eligibility, CTC refundability, SNAP and Medicaid eligibility bands, paycheck-to-paycheck cash flow, and the predatory-lending risk zone that fair-lending compliance teams must defend against.

Why are so many U-02 households homeowners?+

Lower-cost-of-living states (FL, AR, parts of CA Inland Empire) host the working family in this income band, and homeownership at $63k income is realistic in those markets. The wealth is in home equity, not in liquid savings — which is exactly the diagnostic stress for products that conflate net worth with available cash.

Does the corpus model EITC and CTC values directly?+

Implicitly. Income and family-structure are calibrated so that running the actual EITC and CTC computations against the corpus produces realistic refundable-credit values. The corpus does not encode the credits as discrete fields — that's deliberately left for the tax-software's own engine to produce, which is what makes it useful for testing.

What is the benefits cliff and why does it matter?+

A small wage increase can produce a larger loss in SNAP, Medicaid, premium tax credit, and Section 8 voucher value than the wage gain itself — making rational household behavior to reject overtime or promotion. Planning UX that ignores this overestimates the household's marginal propensity to save from incremental wages.

Which synthetic wealth data sets include U-02 households?+

U-02 is tagged for six bundles — B04, B14, B15, B18, B23, and B29 — covering cash-flow stress, behavioral finance, healthcare planning, insurance edge cases, fair-lending compliance, and underserved/CDFI coverage.

Is the U-02 corpus regenerable?+

No. The shipped v3 corpus is frozen and not regenerable from current code (CLAUDE.md §9). Sampler improvements land in a future v4 release with per-archetype golden fixtures in CI to prevent silent drift.

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