What Is a Basis Point (BPS)?
A basis point, abbreviated bp or bps and pronounced 'bip' or 'bips' on trading desks, equals 0.01%, so 100 basis points make one full percentage point. The unit exists to eliminate ambiguity: saying a 5% rate rose by 1% could mean it went to 6% or to 5.05%, but saying it rose 100 basis points can only mean 6%.
Basis points are the everyday language of fixed income, lending, and fund fees. Rate hikes, bond spreads, mortgage pricing, and expense ratios are all quoted this way.
How It Works
Converting is simple: divide basis points by 100 to get percentage points, so 50 bps = 0.50% and 250 bps = 2.50%. Going the other way, a yield moving from 4.32% to 4.47% has risen 15 basis points.
The unit also expresses spreads between two rates. If a corporate bond yields 6.80% while a comparable Treasury yields 4.30%, the bond trades at a credit spread of 250 basis points, and a widening spread signals the market sees growing risk.
Example
Suppose the Federal Reserve cuts its policy rate by 25 basis points, from a 4.50% target to 4.25%. On a $400,000 floating-rate loan, that saves the borrower about $1,000 per year in interest. Similarly, choosing an index fund charging 5 bps (0.05%) over one charging 75 bps (0.75%) saves $700 annually per $100,000 invested.
Why It Matters
In markets where trillions of dollars are rate-sensitive, tiny moves have huge consequences: a 10 bps shift in Treasury yields changes the value of bond portfolios worldwide, and for a long-duration bond a 100 bps rise in yield can knock 10% or more off its price. Precision in units is not pedantry; it is how the industry avoids costly miscommunication.
Fluency in basis points is also a baseline expectation in finance interviews and on the job, whether you are quoting loan pricing in investment banking or comparing management fees in private equity.
