Basis point
What is a basis point?
Basis point is a precise financial unit equal to 0.01%, or one-hundredth of a percentage point. It's the standard metric for describing small changes in interest rates, credit spreads, and transaction pricing, where a fraction of a percent still moves real money.
The unit exists to kill an ambiguity. "The rate went up by 1%" has two readings: an absolute move from 5% to 6%, or a relative increase from 5% to 5.05%. "The rate went up by 100 basis points" has one. That precision carries weight in high-value transactions, where a small percentage shift translates into millions in gains or losses, and it keeps yields, spreads, and performance metrics comparable across finance teams, regulators, and institutional investors.
Key facts
- Value: 1 basis point = 0.01% = 0.0001 in decimal form
- Conversion: 100 basis points = 1 percentage point; 10,000 basis points = 100%
- Also known as: bp (singular), bps (plural), spoken aloud as "bips"
- Formula: basis points = percentage × 100
- Applies to: interest rates, bond yields, credit spreads, currency conversion margins, and card
- Written as: a whole number, so quotes avoid decimals below 1% entirely (35 bps instead of 0.35%)
How it's calculated
Converting in either direction is multiplication or division by 100.
- Percentage to basis points: multiply by 100. 0.35% becomes 35 bps.
- Basis points to percentage: divide by 100. 275 bps becomes 2.75%.
- Basis points to money: multiply the volume by the number of basis points, then divide by 10,000.
Worked example. A merchant processing $2,000,000 a month compares two processing quotes, one at 265 bps and one at 250 bps. The difference is 15 bps, which reads as trivial until it's converted:
$2,000,000 × 15 ÷ 10,000 = $3,000 per month, or $36,000 over a year.
The same 15 bps applied to $50,000 of monthly volume is $75. Basis points describe the rate, not the amount, so the money at stake scales entirely with volume.
Examples
Basis points appear across several layers of payment and financial pricing:
- Processor pricing: the is frequently quoted in basis points plus a fixed per-transaction amount rather than as a percentage
- Interchange: differences between card types, channels, and regions in are compared in basis points, since the gaps are often smaller than a full percentage point
- Currency conversion: the markup applied on top of the mid-market is expressed in basis points
- Monetary policy: central bank decisions are announced as basis point moves, such as a 25 basis point cut
- Credit and bonds: the spread between a bond's yield and a benchmark rate is quoted in basis points
Why it matters
- Contracts say one thing only. A schedule written in basis points can't be read two ways, so a repricing clause means the same to the merchant and the provider.
- Quotes become comparable. Two providers using different fee structures can be lined up once every component is converted to basis points against the same volume.
- Small gaps stay visible. Written as 0.0015, a 15 bps difference disappears into rounding in a spreadsheet or a slide; written as 15 bps, it stays legible next to the rest of the cost stack.
- Negotiations get a shared unit. Volume-tier discounts, scheme pass-through changes, and FX margins are all argued in the same denomination, which is why processing fees are broken out that way in the first place.
