# Patch Notes #009: Cost of Living / Inequality Evidence Matrix

Version: v0.1 public pre-memo matrix
Date: 2026-07-03
Status: Source-anchor matrix for reviewer critique. This is not a final evidence review.

## Working Standard

Every claim should separate inflation, affordability, income, wealth, debt, transfers, and regional cost exposure. National averages can be useful, but the memo should always ask whose budget is being described.

| Claim | Evidence Strength | Initial Source Anchor | Reviewer Ask |
| --- | --- | --- | --- |
| Headline inflation can improve while households still feel squeezed by high price levels, debt costs, housing, childcare, healthcare, or regional costs. | Strong as household-budget concept; needs segmentation | BLS CPI, BEA personal income/outlays, Fed SHED | Which chart best explains price level versus inflation rate? |
| Housing is a dominant cost driver for many households and varies sharply by region and tenure. | Strong | BLS shelter CPI, Harvard JCHS, Census ACS, HUD | How should this connect with #002 without duplicating it? |
| Healthcare affordability includes premiums, deductibles, out-of-pocket costs, medical debt, and forgone care. | Strong | KFF, CMS, Census/Fed SHED | Which measures are least misleading? |
| Childcare costs combine affordability, labor-market participation, provider wages, and supply constraints. | Strong directionally; local data varies | Child Care Aware, BLS, Census, HHS/ACF | What do subsidies miss if supply is constrained? |
| Real wages and employment averages can improve while some households remain fragile due to hours, volatility, debt, benefits, and local costs. | Strong directionally | BLS wages/employment, BEA income, Fed SHED | How should households be segmented? |
| Debt service and interest rates can worsen cash flow even when income rises. | Strong | Federal Reserve household debt data, SHED | What data best captures stress? |
| Inequality can mean income inequality, wealth inequality, opportunity inequality, or cost exposure; those need different tools. | Strong conceptual distinction | Census, Fed distributional accounts, CBO distributional analysis | Which inequality lens fits this issue? |
| Subsidies help when households lack purchasing power, but can worsen prices when supply is fixed or markets are bottlenecked. | Moderate; depends on market | Housing, childcare, healthcare, and energy literature | Where must supply precede or accompany subsidy? |
| A credible cost-of-living strategy must combine supply, income, insurance/risk pooling, competition, targeted transfers, and regional implementation. | Synthesis hypothesis | Cross-source synthesis | Where is this package too broad? |

## Research Gaps Before Memo v0.2

1. Household budget archetypes: renter family, homeowner, single adult, senior, worker with medical costs, family with childcare.
2. Price level versus inflation rate explanation.
3. Wage growth versus real disposable income and benefit costs.
4. Housing, healthcare, childcare, food, energy, transportation, insurance, and debt shares by household type.
5. Regional cost variation.
6. Wealth and emergency savings.
7. Tax/transfer cliff effects.
8. Market power evidence and where it actually drives prices.