Doubling Time Formula

The doubling time equation calculates the number of periods it takes to double the value of an investment at a given discount rate.

Last modified July 16th, 2019 by Michael Brown
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Lump Sum Discount Rate Formula

The lump sum discount rate formula is used to calculate the discount rate (i) needed to compound a lump sum from its present value (PV) to a future value (FV) over a given number of periods (n).

Last modified July 16th, 2019 by Michael Brown
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Future Value Annuity Formula

The future value of an annuity formula is used to calculate the future value of a series of periodic payments. The payments are for the same amount, made at the end of each period, and a discount rate i% is applied.

Last modified July 16th, 2019 by Michael Brown
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Present Value of Annuity Formula

The present value of an annuity formula is used to calculate the present value of a series of periodic payments. The payments are for the same amount, made at the end of each period, and a discount rate i% is applied.

Last modified July 16th, 2019 by Michael Brown
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Present Value of a Perpetuity Formula

The present value of a perpetuity formula shows the value today of an infinite stream of identical cash flows (Pmt) made at regular intervals over time when a discount rate of i% is applied.

Last modified July 16th, 2019 by Michael Brown
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Present Value of a Growing Annuity Due Formula

The present value of a growing annuity due formula is used to calculate the present value of a series of periodic payments which increase at a constant rate each period. The payments made at the start of each period, and a discount rate i% is applied.

Last modified July 16th, 2019 by Michael Brown
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Lump Sum Present and Future Value Formula

The time value of money concept in financial management is used to compare lump sum cash flows which are received or paid at different times.

The lump sum present and future value formulas can be used to calculate the effect of time and compounding interest rates on the value of the lump sums. They are best looked at by way of example.

Last modified July 16th, 2019 by Michael Brown
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Annuity Due Formulas

An annuity due is a series of annual payments made at the beginning of each year for a fixed number of years.

Annuity due formulas are use to calculate annuity due values. The formula to use will depend on which components of the annuity due are already known.

The listing below summarizes the various formulas to use for annuity due calculations.

Last modified July 16th, 2019 by Michael Brown
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Annuity Formulas

An annuity is a series of annual payments made at the end of each year for a fixed number of years. Annuities with payments at the end of each year are sometimes referred to as regular annuities.

Annuity formulas are use to calculate annuity values. The formula to use will depend on which components of the annuity are already known.

Last modified July 16th, 2019 by Michael Brown
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