Overview
Do fewer banks automatically mean worse mortgages? This series argues that national consolidation is a reason to investigate, not proof of borrower harm. It follows completed U.S. bank mergers through local mortgage competition, portfolio composition, causal event-study comparisons, and regulatory selection. It explains how to define the relevant market, separate raw averages from changed behavior, and test price, access, and loan performance. In a Federal Reserve working paper, the selected sample shows no systematic post-merger change in risk-adjusted mortgage rates, approval rates, or delinquency. That finding does not prove every borrower was unaffected, that prices fell, or that future mergers in less competitive markets will behave the same.
Learning outcomes
- National bank consolidation does not by itself show that a borrower lost mortgage choices or paid more.
- In the selected completed U.S. mergers, the study finds no systematic post-merger change in risk-adjusted rates, approvals, or delinquency.
- Local mortgage competition includes bank and nonbank lenders, so lender counts and HHI must match the product, geography, and weighting rule.
- A higher combined rate can reflect portfolio composition; the evidence does not establish universal safety, lower prices, or passed-through savings.
Keywords
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PlansFAQ
Do fewer banks automatically mean worse mortgage terms?
No. In the selected completed U.S. mergers studied by the Federal Reserve, the authors find no systematic worsening in risk-adjusted rates, approval rates, or delinquency, but the result is not universal.
Why can a merged bank’s average mortgage rate rise without repricing?
A combined average can rise when a higher-rate target portfolio is added to a lower-rate acquirer portfolio; controlled comparisons are needed to identify a pricing change.
What market should be measured when judging mortgage competition?
Measure the relevant mortgage product in the local market, including active bank and nonbank parent lenders and specifying the geography, period, and weighting rule.
What does “no systematic harm” mean in the merger evidence?
It means the study does not detect a persistent average increase in risk-adjusted rates, a significant approval decline, or a delinquency rise in its selected sample; it does not mean nobody was affected.