Enter the change in RPI (%) and the original ground rent ($) into the calculator to determine the RPI New Ground Rent.

## RPI New Ground Rent Formula

The following formula is used to calculate the RPI New Ground Rent.

NGR = RPI / 100 * OGR + OGR

- Where NGR is the RPI New Ground Rent ($)
- RPI is the change in RPI (%)
- OGR is the original ground rent ($)

To calculate the RPI ground rent, multiply the change in RPI by the original ground rent, then add the original ground rent to the result.

## How to Calculate RPI New Ground Rent?

The following example problems outline how to calculate RPI New Ground Rent.

**Example Problem #1:**

- First, determine the change in RPI (%). In this example, the change in RPI (%) is given as 10.
- Next, determine the original ground rent ($). For this problem, the original ground rent ($) is given as 1000.
- Finally, calculate the RPI New Ground Rent using the equation above:

NGR = RPI / 100 * OGR + OGR

The values given above are inserted into the equation below:

NGR = 10 / 100 * 1000 + 1000 = 1100($)

**Example Problem #2: **

The variables needed for this problem are provided below:

change in RPI (%) = 15

original ground rent ($) = 1500

Entering these values and solving gives:

NGR = 15 / 100 * 1500 + 1500 = 1725($)