Base Rate: Read this >> https://www.interest.co.nz/charts/in...tes/swap-rates << and look at the 7 year chart as to a good indication of what the current rate is.

Indicative Issue Margin: The extra amount above the base rate Infratil reckoned they would have to pay to get enough buyers.
Note that "The actual Issue Margin may be above, within or below the indicative range" means we will pay as little as we must.

Minimum Interest Rate: The least rate that we will offer [ so you can see that we are not dreaming and it is worth having a look ].