Swap points are the amount added to or subtracted from the spot rate to produce a forward outright rate. Also called forward points, they reflect the interest-rate differential between the two currencies over the period — not a forecast of future spot. Markets quote forwards in these points because they move with relatively stable interest rates rather than every tick of spot.
How Are Swap Points Calculated?
Swap points come from the gap between the two currencies’ interest rates applied over the number of days to the forward date. If a currency’s interest rate is lower than the other’s, its forward trades at a premium and points are added; if higher, it trades at a discount and points are subtracted.
For example, EUR/USD spot at 1.0850 with three-month swap points of +25 gives a forward outright of 1.0875. The points capture the rate differential, expressed in pips.
Why Quote in Points Instead of Full Rates?
Forward points are driven by interest rates, which move far less than spot, so dealers do not need to re-quote them on every spot tick. Customers can compare points across providers and check the spot level only at the moment of dealing.
This is also why the FX forward book typically sits with the money-market desk, separate from spot trading — forwards are fundamentally an interest-rate product.
How Do You Read Premium vs. Discount?
The shape of the quote tells you the direction. When the bid is lower than the offer (for example 20-21), the base currency is at a premium and the points are added; when the bid is higher than the offer (for example 40-39), it is at a discount and the points are subtracted.
Related Terms: Spot Rate, FX Swap, Outright Forward, Covered Interest Parity, Value Date. See the full glossary for more.
This is educational content, not financial or trading advice.