Go library containing a collection of financial functions for time value of money (annuities), cash flow, interest rate conversions, bonds and depreciation calculations.

• EffectiveRate
• NominalRate

• NetPresentValue
• InternalRateOfReturn
• ModifiedInternalRateOfReturn
• ScheduledNetPresentValue
• ScheduledInternalRateOfReturn

• PresentValue
• FutureValue
• Payment
• Periods
• Rate
• InterestPayment
• PrincipalPayment

• DaysDifference
• DaysPerYear
• TBillEquivalentYield
• TBillPrice
• TBillYield
• DiscountRate
• PriceDiscount

• DepreciationFixedDeclining
• DepreciationSYD
• DepreciationStraightLine

Checkout the full docs.

Also check this excellent blog post Learning finance concepts using go-finance for some examples and a general intro.

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