Rate cuts raise medium-term wealth inequality via mortgage debt
A Banque de France working paper finds that interest rate cuts reduce US wealth inequality in the short term but widen it after six years. The medium-term reversal occurs as poorer households accumulate mortgage debt that eventually outpaces initial housing valuation gains.
Housing boom turns to debt trap
Analyzing US Distributional Financial Accounts from 1989 to 2019, authors Alessandro Franconi and Giacomo Rella show that policy rate cuts initially lift net wealth for the bottom 50 percent by up to 10.3 percent.
Over a six-year horizon, this initial gain reverses into a 13.2 percent contraction in net wealth for the bottom half, raising the top one percent wealth share.
In contrast, asset purchases expand the top one percent share on impact via equity valuations, but this effect dissipates within two years.
Household-level panel data from the PSID confirm that lower interest rates encourage poorer renters to purchase homes and induce homeowners to extract home equity, accumulating mortgage debt that outstrips property values over time.
Equities at the top, housing at the bottom
Portfolio structure explains the divergent outcomes across wealth tiers.
Real estate and durables comprise over 70 percent of total assets for the bottom 50 percent, while equities and business holdings dominate portfolios at the top.
When stock prices rise after monetary easing, wealthy households capture immediate capital gains.
For the bottom half, housing assets rise initially, but mortgages account for 60 percent of liabilities.
As debt accumulation persists longer than property appreciation, net equity compresses, reinforcing wealth inequality.
A debt trap disguised as equity gains
The research proves that rate cuts offer only temporary equality gains before entrenching wealth concentration.
Central banks celebrating short-term gains ignore how cheap borrowing lures poorer households into unsustainable debt burdens.
Monetary policy cannot fix structural inequality when housing finance penalizes leveraged borrowers.
Source: Monetary Policy and the Wealth Distribution
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