Square metres x Rating Authority Rate = Rating Authority amount
(Commissioners, churchyard etc)
Square metres x MU Rate = MU amount
(Water and sewerage cost)
____________________________
Invoice amount
Basis of calculation of Non-Domestic Rates:
Whilst the majority of businesses rent the properties from which they operate, which
provides a greater understanding of rental values than in the domestic market where the
majority of homes are owned, it would be more complicated going forward to maintain two
systems to administer property rates. As such, non-domestic properties would also be
measured using the above outlined area assessment. This aligns with the principles detailed
above, providing a more transparent basis of assessment which is easier to understand and
cheaper to administer in the long-run.
The valuation of properties, parameters of rating, and, amongst others, policies on
dilapidations, charities and discounts are set out in the Rating and Valuation Act, 1953, a
copy of which can be found at
https://legislation.gov.im/cms/images/LEGISLATION/PRINCIPAL/1953/1953-
0004/RatingandValuationAct1953_5.pdf
There are also peculiarities in the current system in respect of some industry sectors, such
as the basis of calculation for some sectors, such as casinos, mining and quarrying, differs
from that of attributed rental values and involves additional pieces of legislation.
In respect of quarrying and mining, under the Rating and Valuation Act, 1953, companies in
these sectors pay non-domestic rates based on the previous year’s mineral royalty payment.
As such, the annual rates payment for each company in this industry fluctuates in line with
their annual turnover, creating high levels of uncertainty for these businesses particularly
when planning and forecasting. Adopting a new basis of assessment would allow a review
of the rating legislation that applies to different industry sectors on the Isle of Man.
In determining a new route forward with the calculation of domestic and non-domestic rates
it is envisaged that all existing legislation relating to rating will be replaced with one new
Rating Act.