Basis Swap

Last updated 9 November 2026

Function reference › Interest Rate Derivatives › Basis Swap

4 GIAnalyzer functions for Excel. Optional arguments are shown in [brackets].

GIA_IRD_BasisSwap_LastResetDateP

Returns the last reset date of the reference interest rate in the pay leg in a basis swap.

GIA_IRD_BasisSwap_LastResetDateP(EDate, EfDateP, CFrP, DR, VDate)

Returns: Last reset date of the reference interest rate in the pay leg in a basis swap

Argument	Use	Description
`EDate`	Required	The expiry date.
`EfDateP`	Required	The original effective date in the pay leg of the swap.
`CFrP`	Required	The frequency of coupons (Annual, SemiAnnual, Quarterly, Monthly)
`DR`	Required	The date rolling method. Non-business days are Saturdays and Sundays; holidays are not supported (Following, ModifiedFollowing, Previous, ModifiedPrevious, NoAdjustment)
`VDate`	Required	The value date.

GIA_IRD_BasisSwap_LastResetDateR

Returns the last reset date of the reference interest rate in the receive leg in a basis swap.

GIA_IRD_BasisSwap_LastResetDateR(EDate, EfDateR, CFrR, DR, VDate)

Returns: Last reset date of the reference interest rate in the receive leg in a basis swap

Argument	Use	Description
`EDate`	Required	The expiry date.
`EfDateR`	Required	The original effective date in the receive leg of the swap.
`CFrR`	Required	The frequency of coupons in the receive leg of the swap (Annual, SemiAnnual, Quarterly, Monthly)
`DR`	Required	The date rolling method. Non-business days are Saturdays and Sundays; holidays are not supported (Following, ModifiedFollowing, Previous, ModifiedPrevious, NoAdjustment)
`VDate`	Required	The value date.

GIA_IRD_BasisSwap_Risk

Returns the risk measures (DV01, Macaulay Duration, Modified Duration) of a basis swap.

GIA_IRD_BasisSwap_Risk(Notional, EDate, DR, SpP, LRP, EfDateP, CFrP, DaysP, SpR, LRR, EfDateR, CFrR, DaysR, DCurveDates, DCurveRates, FCurveDatesP, FCurveRatesP, FCurveDatesR, FCurveRatesR, VDate, SDate, NE0, NE1, Comp, Days, Interp, RM, OT)

Returns: Risk measures (DV01, Macaulay Duration, Modified Duration) of a basis swap

Argument	Use	Description
`Notional`	Required	The notional amount.
`EDate`	Required	The expiry date.
`DR`	Required	The date rolling method. Non-business days are Saturdays and Sundays; holidays are not supported (Following, ModifiedFollowing, Previous, ModifiedPrevious, NoAdjustment)
`SpP`	Required	The spread (in basis points) in the pay leg of the swap.
`LRP`	Required	The last reset rate of the reference interest rate in the pay leg of the swap.
`EfDateP`	Required	The original effective date in the pay leg of the swap.
`CFrP`	Required	The frequency of coupons in the pay leg of the swap (Annual, SemiAnnual, Quarterly, Monthly)
`DaysP`	Required	The time basis in the pay leg of the swap (act/360, act/365, act/act, 30E/360, 30I/360)
`SpR`	Required	The spread (in basis points) in the receive leg of the swap.
`LRR`	Required	The last reset rate of the reference interest rate in the receive leg of the swap.
`EfDateR`	Required	The original effective date in the receive leg of the swap.
`CFrR`	Required	The frequency of coupons in the receive leg of the swap (Annual, SemiAnnual, Quarterly, Monthly)
`DaysR`	Required	The time basis in the receive leg of the swap (act/360, act/365, act/act, 30E/360, 30I/360)
`DCurveDates`	Required	The array of dates in the interest rate curve used for discounting cash flows.
`DCurveRates`	Required	The array of rates in the interest rate curve used for discounting cash flows.
`FCurveDatesP`	Required	The array of dates in the interest rate curve used for calculating forward interest rates, in the pay leg of the swap.
`FCurveRatesP`	Required	The array of rates in the interest rate curve used for calculating forward interest rates, in the pay leg of the swap.
`FCurveDatesR`	Required	The array of dates in the interest rate curve used for calculating forward interest rates, in the receive leg of the swap.
`FCurveRatesR`	Required	The array of rates in the interest rate curve used for calculating forward interest rates, in the receive leg of the swap.
`VDate`	Required	The value date.
`SDate`	Required	The spot date.
`NE0`	Required	Whether the notional amount is being exchanged at the start. (Yes, No)
`NE1`	Required	Whether the notional amount is being exchanged at expiry. (Yes, No)
`Comp`	Required	The compounding basis of the interest rates (Annual, SemiAnnual, Quarterly, Monthly, Simple, Continuous)
`Days`	Required	The time basis of the interest rates (act/360, act/365, act/act, 30E/360, 30I/360)
`Interp`	Required	The interpolation method (Linear, LogLinear, CubicSpline, Exponential)
`RM`	Required	The risk measure type (DV01, MacaulayDuration, ModifiedDuration)
`OT`	Required	The output type of the value/risk. (PayLeg, ReceiveLeg, Total)

GIA_IRD_BasisSwap_Value

Returns the value of a basis swap.

GIA_IRD_BasisSwap_Value(Notional, EDate, DR, SpP, LRP, EfDateP, CFrP, DaysP, SpR, LRR, EfDateR, CFrR, DaysR, DCurveDates, DCurveRates, FCurveDatesP, FCurveRatesP, FCurveDatesR, FCurveRatesR, VDate, SDate, NE0, NE1, Comp, Days, Interp, OT)

Returns: Value of a basis swap

Argument	Use	Description
`Notional`	Required	The notional amount.
`EDate`	Required	The expiry date.
`DR`	Required	The date rolling method. Non-business days are Saturdays and Sundays; holidays are not supported (Following, ModifiedFollowing, Previous, ModifiedPrevious, NoAdjustment)
`SpP`	Required	The spread (in basis points) in the pay leg of the swap.
`LRP`	Required	The last reset rate of the reference interest rate in the pay leg of the swap.
`EfDateP`	Required	The original effective date in the pay leg of the swap.
`CFrP`	Required	The frequency of coupons in the pay leg of the swap (Annual, SemiAnnual, Quarterly, Monthly)
`DaysP`	Required	The time basis in the pay leg of the swap (act/360, act/365, act/act, 30E/360, 30I/360)
`SpR`	Required	The spread (in basis points) in the receive leg of the swap.
`LRR`	Required	The last reset rate of the reference interest rate in the receive leg of the swap.
`EfDateR`	Required	The original effective date in the receive leg of the swap.
`CFrR`	Required	The frequency of coupons in the receive leg of the swap (Annual, SemiAnnual, Quarterly, Monthly)
`DaysR`	Required	The time basis in the receive leg of the swap (act/360, act/365, act/act, 30E/360, 30I/360)
`DCurveDates`	Required	The array of dates in the interest rate curve used for discounting cash flows.
`DCurveRates`	Required	The array of rates in the interest rate curve used for discounting cash flows.
`FCurveDatesP`	Required	The array of dates in the interest rate curve used for calculating forward interest rates, in the pay leg of the swap.
`FCurveRatesP`	Required	The array of rates in the interest rate curve used for calculating forward interest rates, in the pay leg of the swap.
`FCurveDatesR`	Required	The array of dates in the interest rate curve used for calculating forward interest rates, in the receive leg of the swap.
`FCurveRatesR`	Required	The array of rates in the interest rate curve used for calculating forward interest rates, in the receive leg of the swap.
`VDate`	Required	The value date.
`SDate`	Required	The spot date.
`NE0`	Required	Whether the notional amount is being exchanged at the start. (Yes, No)
`NE1`	Required	Whether the notional amount is being exchanged at expiry. (Yes, No)
`Comp`	Required	The compounding basis of the interest rates (Annual, SemiAnnual, Quarterly, Monthly, Simple, Continuous)
`Days`	Required	The time basis of the interest rates (act/360, act/365, act/act, 30E/360, 30I/360)
`Interp`	Required	The interpolation method (Linear, LogLinear, CubicSpline, Exponential)
`OT`	Required	The output type of the value/risk. (PayLeg, ReceiveLeg, Total)