Many interest rates on consumer lending products and savings vehicles haven't fallen by as much as the Federal Reserve's key lending rate since September 2024. Delmaine Donson/E+/Getty Images

Thanks to its latest decision on Wednesday – its final one for 2025 – the Federal Reserve has now reduced its key overnight lending rate by 1.75 percentage points since it began its rate-cutting cycle in September 2024.

Since the Fed funds rate affects a ton of consumer lending and savings rates throughout the economy – directly or indirectly – it’s worth assessing whether the full magnitude of the Fed’s cuts (or at least the 150-basis-points drop prior to Wednesday’s decision) has filtered through to consumers over the past 15 months.

The answer in several instances – at least when you look at

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