Definition
One hundredth of one percent (0.01%), because apparently regular percentages weren't confusing enough for finance professionals. When your mortgage rate increases by 25 basis points, congratulations—you're paying 0.25% more.
Example Usage
The Federal Reserve raised interest rates by 75 basis points, causing mortgage brokers everywhere to practice their sympathetic face in the mirror.
Origin
From mathematical basis terminology, adopted in finance by the 1970s to avoid ambiguity when discussing percentage changes
Fun Fact
Traders abbreviate basis points as 'bps' and pronounce it 'bips,' creating a whole new layer of impenetrable jargon.
Source: Standard financial markets terminology
Related Terms
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See “basis point” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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