Uneven cash flows

The PV of uneven cash flows is the sum of the PVs of individual cash flows.

P V_{A L L} = \sum_{t = 0}^{T} \frac{C F_{t}}{(1 + r)^{t}}

F V_{A L L} = \sum_{t = 0}^{T} C F_{t} \cdot (1 + r)^{T - t}

For example, for the following uneven cash flow:

Year	Cash flow	PV of Cash flow	PV
1	100	100/(1.1)	=90.91
2	300	300/[(1.1)^2]	=247.93
3	300	300/[(1.1)^3]	=225.39
4	-50	-50/[(1.1)^4]	=-34.15

The final PV of the uneven cash flow stream is the sum, $530.08.